Add IC metrics reporting

build-common/src/org/jetbrains/kotlin/build/ExecutionStrategy.kt

@@ -0,0 +1,12 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.build
+
+import java.io.Serializable
+
+enum class ExecutionStrategy : Serializable {
+    DAEMON, IN_PROCESS, OUT_OF_PROCESS
+}

build-common/src/org/jetbrains/kotlin/build/report/BuildReporter.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.build.report
+
+import org.jetbrains.kotlin.build.report.metrics.BuildMetricsReporter
+import org.jetbrains.kotlin.build.report.metrics.RemoteBuildMetricsReporter
+
+open class BuildReporter(
+    protected open val icReporter: ICReporter,
+    protected open val buildMetricsReporter: BuildMetricsReporter
+) : ICReporter by icReporter, BuildMetricsReporter by buildMetricsReporter
+
+class RemoteBuildReporter(
+    override val icReporter: RemoteICReporter,
+    override val buildMetricsReporter: RemoteBuildMetricsReporter
+) : BuildReporter(icReporter, buildMetricsReporter), RemoteReporter {
+    override fun flush() {
+        icReporter.flush()
+        buildMetricsReporter.flush()
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/ICReporter.kt

@@ -3,7 +3,7 @@
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
-package org.jetbrains.kotlin.incremental
+package org.jetbrains.kotlin.build.report
 
 import org.jetbrains.kotlin.cli.common.ExitCode
 import java.io.File
@@ -16,21 +16,6 @@ interface ICReporter {
     fun reportMarkDirtyClass(affectedFiles: Iterable<File>, classFqName: String)
     fun reportMarkDirtyMember(affectedFiles: Iterable<File>, scope: String, name: String)
     fun reportMarkDirty(affectedFiles: Iterable<File>, reason: String)
-
-    fun startMeasure(metric: String, startNs: Long)
-    fun endMeasure(metric: String, endNs: Long)
 }
 
-fun <T> ICReporter?.measure(metric: String, fn: () -> T): T {
-    if (this == null) return fn()
 
-    val start = System.nanoTime()
-    startMeasure(metric, start)
-
-    try {
-        return fn()
-    } finally {
-        val end = System.nanoTime()
-        endMeasure(metric, end)
-    }
-}

build-common/src/org/jetbrains/kotlin/build/report/ICReporterBase.kt

@@ -1,9 +1,9 @@
 /*
- * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
-package org.jetbrains.kotlin.incremental
+package org.jetbrains.kotlin.build.report
 
 import java.io.File
 
@@ -33,10 +33,4 @@ abstract class ICReporterBase(private val pathsBase: File? = null) : ICReporter
 
     protected fun File.relativeOrCanonical(): File =
         pathsBase?.let { relativeToOrNull(it) } ?: canonicalFile
-
-    override fun startMeasure(metric: String, startNs: Long) {
-    }
-
-    override fun endMeasure(metric: String, endNs: Long) {
-    }
 }

build-common/src/org/jetbrains/kotlin/build/report/RemoteICReporter.kt

@@ -0,0 +1,9 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.build.report
+
+interface RemoteICReporter : ICReporter,
+    RemoteReporter

build-common/src/org/jetbrains/kotlin/build/report/RemoteReporter.kt

@@ -0,0 +1,11 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.build.report
+
+interface RemoteReporter {
+    fun flush()
+}
+

build-common/src/org/jetbrains/kotlin/build/report/metrics/BuildAttribute.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.build.report.metrics
+
+import java.io.Serializable
+
+enum class BuildAttributeKind : Serializable {
+    REBUILD_REASON;
+
+    companion object {
+        const val serialVersionUID = 0L
+    }
+}
+
+enum class BuildAttribute(val kind: BuildAttributeKind) : Serializable {
+    NO_BUILD_HISTORY(BuildAttributeKind.REBUILD_REASON),
+    CACHE_CORRUPTION(BuildAttributeKind.REBUILD_REASON),
+    UNKNOWN_CHANGES_IN_GRADLE_INPUTS(BuildAttributeKind.REBUILD_REASON),
+    JAVA_CHANGE_UNTRACKED_FILE_IS_REMOVED(BuildAttributeKind.REBUILD_REASON),
+    JAVA_CHANGE_UNEXPECTED_PSI(BuildAttributeKind.REBUILD_REASON),
+    JAVA_CHANGE_UNKNOWN_QUALIFIER(BuildAttributeKind.REBUILD_REASON),
+    DEP_CHANGE_REMOVED_ENTRY(BuildAttributeKind.REBUILD_REASON),
+    DEP_CHANGE_HISTORY_IS_NOT_FOUND(BuildAttributeKind.REBUILD_REASON),
+    DEP_CHANGE_HISTORY_CANNOT_BE_READ(BuildAttributeKind.REBUILD_REASON),
+    DEP_CHANGE_HISTORY_NO_KNOWN_BUILDS(BuildAttributeKind.REBUILD_REASON),
+    DEP_CHANGE_NON_INCREMENTAL_BUILD_IN_DEP(BuildAttributeKind.REBUILD_REASON),
+    IN_PROCESS_EXECUTION(BuildAttributeKind.REBUILD_REASON),
+    OUT_OF_PROCESS_EXECUTION(BuildAttributeKind.REBUILD_REASON),
+    IC_IS_NOT_ENABLED(BuildAttributeKind.REBUILD_REASON);
+
+    companion object {
+        const val serialVersionUID = 0L
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/BuildAttributes.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.build.report.metrics
+
+import java.io.Serializable
+import java.util.*
+
+class BuildAttributes : Serializable {
+    private val myAttributes =
+        EnumMap<BuildAttribute, Int>(
+            BuildAttribute::class.java
+        )
+
+    fun add(attr: BuildAttribute, count: Int = 1) {
+        myAttributes[attr] = myAttributes.getOrDefault(attr, 0) + count
+    }
+
+    fun addAll(other: BuildAttributes) {
+        other.myAttributes.forEach { (attr, n) -> add(attr, n) }
+    }
+
+    fun asMap(): Map<BuildAttribute, Int> = myAttributes
+
+    companion object {
+        const val serialVersionUID = 0L
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/BuildMetrics.kt

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.build.report.metrics
+
+import java.io.Serializable
+
+data class BuildMetrics(
+    val buildTimes: BuildTimes = BuildTimes(),
+    val buildAttributes: BuildAttributes = BuildAttributes()
+) : Serializable {
+    fun addAll(other: BuildMetrics) {
+        buildTimes.addAll(other.buildTimes)
+        buildAttributes.addAll(other.buildAttributes)
+    }
+
+    companion object {
+        const val serialVersionUID = 0L
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/BuildMetricsReporter.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.build.report.metrics
+
+interface BuildMetricsReporter {
+    fun startMeasure(metric: BuildTime, startNs: Long)
+    fun endMeasure(metric: BuildTime, endNs: Long)
+
+    fun addAttribute(attribute: BuildAttribute)
+
+    fun getMetrics(): BuildMetrics
+    fun addMetrics(metrics: BuildMetrics?)
+}
+
+inline fun <T> BuildMetricsReporter.measure(metric: BuildTime, fn: () -> T): T {
+    val start = System.nanoTime()
+    startMeasure(metric, start)
+
+    try {
+        return fn()
+    } finally {
+        val end = System.nanoTime()
+        endMeasure(metric, end)
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/BuildMetricsReporterImpl.kt

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.build.report.metrics
+
+import java.util.*
+
+class BuildMetricsReporterImpl : BuildMetricsReporter {
+    private val myBuildTimeStartNs: EnumMap<BuildTime, Long> =
+        EnumMap(
+            BuildTime::class.java
+        )
+    private val myBuildTimes = BuildTimes()
+    private val myBuildAttributes = BuildAttributes()
+
+    override fun startMeasure(metric: BuildTime, startNs: Long) {
+        if (metric in myBuildTimeStartNs) {
+            error("$metric was restarted before it finished")
+        }
+        myBuildTimeStartNs[metric] = startNs
+    }
+
+    override fun endMeasure(metric: BuildTime, endNs: Long) {
+        val startNs = myBuildTimeStartNs.remove(metric) ?: error("$metric finished before it started")
+        val durationNs = endNs - startNs
+        myBuildTimes.add(metric, durationNs)
+    }
+
+    override fun addAttribute(attribute: BuildAttribute) {
+        myBuildAttributes.add(attribute)
+    }
+
+    override fun getMetrics(): BuildMetrics =
+        BuildMetrics(
+            buildTimes = myBuildTimes,
+            buildAttributes = myBuildAttributes
+        )
+
+    override fun addMetrics(metrics: BuildMetrics?) {
+        if (metrics == null) return
+
+        myBuildAttributes.addAll(metrics.buildAttributes)
+        myBuildTimes.addAll(metrics.buildTimes)
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/BuildTime.kt

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.build.report.metrics
+
+import java.io.Serializable
+
+@Suppress("Reformat")
+enum class BuildTime(val parent: BuildTime? = null) : Serializable {
+    GRADLE_TASK,
+        CLEAR_OUTPUT(GRADLE_TASK),
+        BACKUP_OUTPUT(GRADLE_TASK),
+        RESTORE_OUTPUT_FROM_BACKUP(GRADLE_TASK),
+        CONNECT_TO_DAEMON(GRADLE_TASK),
+        CLEAR_JAR_CACHE(GRADLE_TASK),
+        RUN_COMPILER(GRADLE_TASK),
+            NON_INCREMENTAL_COMPILATION_IN_PROCESS(RUN_COMPILER),
+            NON_INCREMENTAL_COMPILATION_OUT_OF_PROCESS(RUN_COMPILER),
+            NON_INCREMENTAL_COMPILATION_DAEMON(RUN_COMPILER),
+            INCREMENTAL_COMPILATION(RUN_COMPILER),
+                IC_CALCULATE_INITIAL_DIRTY_SET(INCREMENTAL_COMPILATION),
+                    IC_ANALYZE_CHANGES_IN_DEPENDENCIES(IC_CALCULATE_INITIAL_DIRTY_SET),
+                        IC_FIND_HISTORY_FILES(IC_ANALYZE_CHANGES_IN_DEPENDENCIES),
+                        IC_ANALYZE_HISTORY_FILES(IC_ANALYZE_CHANGES_IN_DEPENDENCIES),
+                    IC_ANALYZE_CHANGES_IN_JAVA_SOURCES(IC_CALCULATE_INITIAL_DIRTY_SET),
+                    IC_ANALYZE_CHANGES_IN_ANDROID_LAYOUTS(IC_CALCULATE_INITIAL_DIRTY_SET),
+                    IC_DETECT_REMOVED_CLASSES(IC_CALCULATE_INITIAL_DIRTY_SET),
+                CLEAR_OUTPUT_ON_REBUILD(INCREMENTAL_COMPILATION),
+                IC_UPDATE_CACHES(INCREMENTAL_COMPILATION),
+                INCREMENTAL_ITERATION(INCREMENTAL_COMPILATION),
+                NON_INCREMENTAL_ITERATION(INCREMENTAL_COMPILATION),
+                IC_WRITE_HISTORY_FILE(INCREMENTAL_COMPILATION);
+
+    companion object {
+        const val serialVersionUID = 0L
+
+        val children by lazy {
+            values().filter { it.parent != null }.groupBy { it.parent }
+        }
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/BuildTimes.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.build.report.metrics
+
+import java.io.Serializable
+import java.util.*
+
+class BuildTimes : Serializable {
+    private val myBuildTimes = EnumMap<BuildTime, Long>(BuildTime::class.java)
+
+    fun addAll(other: BuildTimes) {
+        for ((bt, timeNs) in other.myBuildTimes) {
+            add(bt, timeNs)
+        }
+    }
+
+    fun add(buildTime: BuildTime, timeNs: Long) {
+        myBuildTimes[buildTime] = myBuildTimes.getOrDefault(buildTime, 0) + timeNs
+    }
+
+    fun asMap(): Map<BuildTime, Long> = myBuildTimes
+
+    companion object {
+        const val serialVersionUID = 0L
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/DoNothingBuildMetricsReporter.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.build.report.metrics
+
+object DoNothingBuildMetricsReporter : BuildMetricsReporter {
+    override fun startMeasure(metric: BuildTime, startNs: Long) {
+    }
+
+    override fun endMeasure(metric: BuildTime, endNs: Long) {
+    }
+
+    override fun addAttribute(attribute: BuildAttribute) {
+    }
+
+    override fun getMetrics(): BuildMetrics =
+        BuildMetrics(
+            BuildTimes(),
+            BuildAttributes()
+        )
+
+    override fun addMetrics(metrics: BuildMetrics?) {}
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/RemoteBuildMetricsReporter.kt

@@ -0,0 +1,11 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.build.report.metrics
+
+import org.jetbrains.kotlin.build.report.RemoteReporter
+
+interface RemoteBuildMetricsReporter : BuildMetricsReporter,
+    RemoteReporter

build-common/src/org/jetbrains/kotlin/incremental/buildUtil.kt

@@ -20,6 +20,7 @@ import org.jetbrains.kotlin.build.GeneratedFile
 import org.jetbrains.kotlin.build.GeneratedJvmClass
 import org.jetbrains.kotlin.build.JvmSourceRoot
 import org.jetbrains.kotlin.build.isModuleMappingFile
+import org.jetbrains.kotlin.build.report.ICReporter
 import org.jetbrains.kotlin.config.Services
 import org.jetbrains.kotlin.incremental.components.LookupTracker
 import org.jetbrains.kotlin.load.kotlin.incremental.components.IncrementalCache

compiler/daemon/daemon-common/src/org/jetbrains/kotlin/daemon/common/CompilationResults.kt

@@ -29,6 +29,7 @@ enum class CompilationResultCategory(val code: Int) {
     IC_COMPILE_ITERATION(0),
     BUILD_REPORT_LINES(1),
     VERBOSE_BUILD_REPORT_LINES(2),
+    BUILD_METRICS(3)
 }
 
 interface CompilationResultsAsync {

compiler/daemon/src/org/jetbrains/kotlin/daemon/CompileServiceImpl.kt

@@ -21,6 +21,9 @@ import com.intellij.openapi.util.Disposer
 import com.intellij.openapi.vfs.impl.ZipHandler
 import com.intellij.openapi.vfs.impl.jar.CoreJarFileSystem
 import org.jetbrains.kotlin.build.DEFAULT_KOTLIN_SOURCE_FILES_EXTENSIONS
+import org.jetbrains.kotlin.build.report.BuildReporter
+import org.jetbrains.kotlin.build.report.RemoteBuildReporter
+import org.jetbrains.kotlin.build.report.RemoteReporter
 import org.jetbrains.kotlin.cli.common.CLICompiler
 import org.jetbrains.kotlin.cli.common.ExitCode
 import org.jetbrains.kotlin.cli.common.KOTLIN_COMPILER_ENVIRONMENT_KEEPALIVE_PROPERTY
@@ -286,7 +289,7 @@ abstract class CompileServiceImplBase(
         createMessageCollector: (ServicesFacadeT, CompilationOptions) -> MessageCollector,
         createReporter: (ServicesFacadeT, CompilationOptions) -> DaemonMessageReporter,
         createServices: (JpsServicesFacadeT, EventManager, Profiler) -> Services,
-        getICReporter: (ServicesFacadeT, CompilationResultsT?, IncrementalCompilationOptions) -> RemoteICReporter
+        getICReporter: (ServicesFacadeT, CompilationResultsT?, IncrementalCompilationOptions) -> RemoteBuildReporter
     ) = kotlin.run {
         val messageCollector = createMessageCollector(servicesFacade, compilationOptions)
         val daemonReporter = createReporter(servicesFacade, compilationOptions)
@@ -514,7 +517,7 @@ abstract class CompileServiceImplBase(
         args: K2JSCompilerArguments,
         incrementalCompilationOptions: IncrementalCompilationOptions,
         compilerMessageCollector: MessageCollector,
-        reporter: RemoteICReporter
+        reporter: RemoteBuildReporter
     ): ExitCode {
         val allKotlinFiles = arrayListOf<File>()
         val freeArgsWithoutKotlinFiles = arrayListOf<String>()
@@ -554,7 +557,7 @@ abstract class CompileServiceImplBase(
         k2jvmArgs: K2JVMCompilerArguments,
         incrementalCompilationOptions: IncrementalCompilationOptions,
         compilerMessageCollector: MessageCollector,
-        reporter: RemoteICReporter
+        reporter: RemoteBuildReporter
     ): ExitCode {
         val allKotlinExtensions = (DEFAULT_KOTLIN_SOURCE_FILES_EXTENSIONS +
                 (incrementalCompilationOptions.kotlinScriptExtensions ?: emptyArray())).distinct()
@@ -784,7 +787,7 @@ class CompileServiceImpl(
         createMessageCollector = ::CompileServicesFacadeMessageCollector,
         createReporter = ::DaemonMessageReporter,
         createServices = this::createCompileServices,
-        getICReporter = { a, b, c -> getICReporter(a, b!!, c)}
+        getICReporter = { a, b, c -> getBuildReporter(a, b!!, c)}
     )
 
     override fun leaseReplSession(

compiler/daemon/src/org/jetbrains/kotlin/daemon/report/BuildReportICReporter.kt

@@ -8,23 +8,19 @@ package org.jetbrains.kotlin.daemon.report
 import org.jetbrains.kotlin.cli.common.ExitCode
 import org.jetbrains.kotlin.daemon.common.CompilationResultCategory
 import org.jetbrains.kotlin.daemon.common.CompilationResults
-import org.jetbrains.kotlin.incremental.ICReporterBase
+import org.jetbrains.kotlin.build.report.ICReporterBase
+import org.jetbrains.kotlin.build.report.RemoteICReporter
 import java.io.File
 import java.util.*
-import kotlin.collections.ArrayList
 
+// todo: sync BuildReportICReporterAsync
 internal class BuildReportICReporter(
     private val compilationResults: CompilationResults,
     rootDir: File,
-    private val isVerbose: Boolean = false,
-    // todo: default value
-    // todo: sync BuildReportICReporterAsync
-    private val reportMetrics: Boolean = true
+    private val isVerbose: Boolean = false
 ) : ICReporterBase(rootDir), RemoteICReporter {
     private val icLogLines = arrayListOf<String>()
     private val recompilationReason = HashMap<File, String>()
-    private val rootMetric = Metric("<root>", 0)
-    private val metrics = ArrayDeque<Metric>().apply { add(rootMetric) }
 
     override fun report(message: () -> String) {
         icLogLines.add(message())
@@ -36,30 +32,6 @@ internal class BuildReportICReporter(
         }
     }
 
-    override fun startMeasure(metric: String, startNs: Long) {
-        if (!reportMetrics) return
-
-        val newMetric = Metric(metric, startNs)
-        if (metrics.isNotEmpty()) {
-            metrics.peekLast().children.add(newMetric)
-        }
-        metrics.addLast(newMetric)
-    }
-
-    override fun endMeasure(metric: String, endNs: Long) {
-        if (!reportMetrics) return
-
-        while (metrics.isNotEmpty()) {
-            val lastMetric = metrics.peekLast()
-            if (lastMetric.name == metric) {
-                lastMetric.endNs = endNs
-                break
-            } else {
-                metrics.removeLast()
-            }
-        }
-    }
-
     override fun reportCompileIteration(incremental: Boolean, sourceFiles: Collection<File>, exitCode: ExitCode) {
         if (!incremental) return
 
@@ -76,25 +48,6 @@ internal class BuildReportICReporter(
     }
 
     override fun flush() {
-        if (reportMetrics) {
-            icLogLines.add("Performance metrics:")
-            reportMetric(rootMetric)
-        }
-
         compilationResults.add(CompilationResultCategory.BUILD_REPORT_LINES.code, icLogLines)
     }
-
-    private fun reportMetric(metric: Metric, level: Int = 0) {
-        if (level > 0) {
-            val timeMs = metric.endNs?.let { (it - metric.startNs) / 1_000_000L }
-            icLogLines.add("  ".repeat(level) + "{perf_metric:${metric.name}} ${timeMs ?: "<unknown>"} ms")
-        }
-
-        metric.children.forEach { reportMetric(it, level + 1) }
-    }
-}
-
-private class Metric(val name: String, val startNs: Long) {
-    var endNs: Long? = null
-    val children = ArrayList<Metric>()
 }

compiler/daemon/src/org/jetbrains/kotlin/daemon/report/CompileIterationICReporter.kt

@@ -9,7 +9,8 @@ import org.jetbrains.kotlin.cli.common.ExitCode
 import org.jetbrains.kotlin.daemon.common.CompilationResultCategory
 import org.jetbrains.kotlin.daemon.common.CompilationResults
 import org.jetbrains.kotlin.daemon.common.CompileIterationResult
-import org.jetbrains.kotlin.incremental.ICReporterBase
+import org.jetbrains.kotlin.build.report.ICReporterBase
+import org.jetbrains.kotlin.build.report.RemoteICReporter
 import java.io.File
 
 internal class CompileIterationICReporter(

compiler/daemon/src/org/jetbrains/kotlin/daemon/report/CompositeICReporter.kt

@@ -5,11 +5,11 @@
 
 package org.jetbrains.kotlin.daemon.report
 
+import org.jetbrains.kotlin.build.report.RemoteICReporter
 import org.jetbrains.kotlin.cli.common.ExitCode
 import java.io.File
 
-internal class CompositeICReporter(private val reporters: Iterable<RemoteICReporter>) :
-    RemoteICReporter {
+internal class CompositeICReporter(private val reporters: Iterable<RemoteICReporter>) : RemoteICReporter {
     override fun report(message: () -> String) {
         reporters.forEach { it.report(message) }
     }
@@ -34,14 +34,6 @@ internal class CompositeICReporter(private val reporters: Iterable<RemoteICRepor
         reporters.forEach { it.reportMarkDirty(affectedFiles, reason) }
     }
 
-    override fun startMeasure(metric: String, startNs: Long) {
-        reporters.forEach { it.startMeasure(metric, startNs) }
-    }
-
-    override fun endMeasure(metric: String, endNs: Long) {
-        reporters.forEach { it.endMeasure(metric, endNs) }
-    }
-
     override fun flush() {
         reporters.forEach { it.flush() }
     }

compiler/daemon/src/org/jetbrains/kotlin/daemon/report/DebugMessagesICReporter.kt

@@ -7,7 +7,8 @@ package org.jetbrains.kotlin.daemon.report
 
 import org.jetbrains.kotlin.cli.common.ExitCode
 import org.jetbrains.kotlin.daemon.common.*
-import org.jetbrains.kotlin.incremental.ICReporterBase
+import org.jetbrains.kotlin.build.report.ICReporterBase
+import org.jetbrains.kotlin.build.report.RemoteICReporter
 import java.io.File
 
 internal class DebugMessagesICReporter(

compiler/daemon/src/org/jetbrains/kotlin/daemon/report/RemoteBuildMetricsReporterAdapter.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.daemon.report
+
+import org.jetbrains.kotlin.build.report.metrics.BuildMetricsReporter
+import org.jetbrains.kotlin.build.report.metrics.RemoteBuildMetricsReporter
+import org.jetbrains.kotlin.daemon.common.CompilationResultCategory
+import org.jetbrains.kotlin.daemon.common.CompilationResults
+
+class RemoteBuildMetricsReporterAdapter(
+    private val delegate: BuildMetricsReporter,
+    private val shouldReport: Boolean,
+    private val compilationResults: CompilationResults
+) :
+    BuildMetricsReporter by delegate,
+    RemoteBuildMetricsReporter {
+
+    override fun flush() {
+        if (shouldReport) {
+            val metrics = delegate.getMetrics()
+            compilationResults.add(CompilationResultCategory.BUILD_METRICS.code, metrics)
+        }
+    }
+}

compiler/daemon/src/org/jetbrains/kotlin/daemon/report/RemoteICReporter.kt

@@ -1,12 +0,0 @@
-/*
- * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package org.jetbrains.kotlin.daemon.report
-
-import org.jetbrains.kotlin.incremental.ICReporter
-
-interface RemoteICReporter : ICReporter {
-    fun flush()
-}

compiler/daemon/src/org/jetbrains/kotlin/daemon/report/experimental/RemoteICReporter.kt

@@ -9,8 +9,14 @@ import kotlinx.coroutines.*
 import org.jetbrains.kotlin.cli.common.ExitCode
 import org.jetbrains.kotlin.daemon.common.*
 import org.jetbrains.kotlin.daemon.report.CompositeICReporter
-import org.jetbrains.kotlin.daemon.report.RemoteICReporter
-import org.jetbrains.kotlin.incremental.ICReporterBase
+import org.jetbrains.kotlin.build.report.ICReporterBase
+import org.jetbrains.kotlin.build.report.RemoteBuildReporter
+import org.jetbrains.kotlin.build.report.RemoteICReporter
+import org.jetbrains.kotlin.build.report.metrics.BuildMetricsReporter
+import org.jetbrains.kotlin.build.report.metrics.DoNothingBuildMetricsReporter
+import org.jetbrains.kotlin.build.report.metrics.RemoteBuildMetricsReporter
+import org.jetbrains.kotlin.daemon.report.BuildReportICReporter
+import org.jetbrains.kotlin.daemon.report.CompileIterationICReporter
 import java.io.File
 
 internal class DebugMessagesICReporterAsync(
@@ -106,7 +112,7 @@ fun getICReporterAsync(
     servicesFacade: CompilerServicesFacadeBaseAsync,
     compilationResults: CompilationResultsAsync?,
     compilationOptions: IncrementalCompilationOptions
-): RemoteICReporter {
+): RemoteBuildReporter {
     val root = compilationOptions.modulesInfo.projectRoot
     val reporters = ArrayList<RemoteICReporter>()
 
@@ -120,19 +126,26 @@ fun getICReporterAsync(
         .mapNotNullTo(HashSet()) { resultCode ->
             CompilationResultCategory.values().getOrNull(resultCode)
         }
-    requestedResults.mapTo(reporters) { requestedResult ->
+    for (requestedResult in requestedResults) {
         when (requestedResult) {
             CompilationResultCategory.IC_COMPILE_ITERATION -> {
-                CompileIterationICReporterAsync(compilationResults)
+                reporters.add(CompileIterationICReporterAsync(compilationResults))
             }
             CompilationResultCategory.BUILD_REPORT_LINES -> {
-                BuildReportICReporterAsync(compilationResults, root)
+                reporters.add(BuildReportICReporterAsync(compilationResults, root))
             }
             CompilationResultCategory.VERBOSE_BUILD_REPORT_LINES -> {
-                BuildReportICReporterAsync(compilationResults, root, isVerbose = true)
+                reporters.add(BuildReportICReporterAsync(compilationResults, root, isVerbose = true))
             }
         }
     }
 
-    return CompositeICReporter(reporters)
+    val icReporter = CompositeICReporter(reporters)
+    val metricsReporter = DoNothingRemoteBuildMetricsReporter
+    return RemoteBuildReporter(icReporter, metricsReporter)
+}
+
+object DoNothingRemoteBuildMetricsReporter : BuildMetricsReporter by DoNothingBuildMetricsReporter, RemoteBuildMetricsReporter {
+    override fun flush() {
+    }
 }

compiler/daemon/src/org/jetbrains/kotlin/daemon/report/getICReporter.kt

@@ -16,15 +16,18 @@
 
 package org.jetbrains.kotlin.daemon.report
 
+import org.jetbrains.kotlin.build.report.RemoteBuildReporter
+import org.jetbrains.kotlin.build.report.RemoteICReporter
+import org.jetbrains.kotlin.build.report.metrics.BuildMetricsReporterImpl
+import org.jetbrains.kotlin.build.report.metrics.DoNothingBuildMetricsReporter
 import org.jetbrains.kotlin.daemon.common.*
-import java.io.File
 import java.util.*
 
-fun getICReporter(
+fun getBuildReporter(
     servicesFacade: CompilerServicesFacadeBase,
     compilationResults: CompilationResults,
     compilationOptions: IncrementalCompilationOptions
-): RemoteICReporter {
+): RemoteBuildReporter {
     val root = compilationOptions.modulesInfo.projectRoot
     val reporters = ArrayList<RemoteICReporter>()
 
@@ -38,21 +41,25 @@ fun getICReporter(
         .mapNotNullTo(HashSet()) { resultCode ->
             CompilationResultCategory.values().getOrNull(resultCode)
         }
-    requestedResults.mapTo(reporters) { requestedResult ->
+    for (requestedResult in requestedResults) {
         when (requestedResult) {
             CompilationResultCategory.IC_COMPILE_ITERATION -> {
-                CompileIterationICReporter(compilationResults)
+                reporters.add(CompileIterationICReporter(compilationResults))
             }
             CompilationResultCategory.BUILD_REPORT_LINES -> {
-                BuildReportICReporter(compilationResults, root)
+                reporters.add(BuildReportICReporter(compilationResults, root))
             }
             CompilationResultCategory.VERBOSE_BUILD_REPORT_LINES -> {
-                BuildReportICReporter(compilationResults, root, isVerbose = true)
+                reporters.add(BuildReportICReporter(compilationResults, root, isVerbose = true))
             }
         }
     }
+    val areBuildMetricsNeeded = CompilationResultCategory.BUILD_METRICS in requestedResults
+    val metricsReporter =
+        (if (areBuildMetricsNeeded) BuildMetricsReporterImpl() else DoNothingBuildMetricsReporter)
+            .let { RemoteBuildMetricsReporterAdapter(it, areBuildMetricsNeeded, compilationResults) }
 
-    return CompositeICReporter(reporters)
+    return RemoteBuildReporter(CompositeICReporter(reporters), metricsReporter)
 }
 
 

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/BuildDiffsStorage.kt

@@ -17,6 +17,7 @@
 package org.jetbrains.kotlin.incremental
 
 import org.jetbrains.annotations.TestOnly
+import org.jetbrains.kotlin.build.report.ICReporter
 import org.jetbrains.kotlin.name.FqName
 import java.io.File
 import java.io.IOException

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/ChangedJavaFilesProcessor.kt

@@ -19,6 +19,8 @@ package org.jetbrains.kotlin.incremental
 import com.intellij.psi.PsiClass
 import com.intellij.psi.PsiFile
 import com.intellij.psi.PsiJavaFile
+import org.jetbrains.kotlin.build.report.ICReporter
+import org.jetbrains.kotlin.build.report.metrics.BuildAttribute
 import java.io.File
 import java.util.*
 
@@ -37,7 +39,7 @@ internal class ChangedJavaFilesProcessor(
 
         if (removedJava.any()) {
             reporter.report { "Some java files are removed: [${removedJava.joinToString()}]" }
-            return ChangesEither.Unknown()
+            return ChangesEither.Unknown(BuildAttribute.JAVA_CHANGE_UNTRACKED_FILE_IS_REMOVED)
         }
 
         val symbols = HashSet<LookupSymbol>()
@@ -47,7 +49,7 @@ internal class ChangedJavaFilesProcessor(
             val psiFile = psiFileFactory(javaFile)
             if (psiFile !is PsiJavaFile) {
                 reporter.report { "Expected PsiJavaFile, got ${psiFile?.javaClass}" }
-                return ChangesEither.Unknown()
+                return ChangesEither.Unknown(BuildAttribute.JAVA_CHANGE_UNEXPECTED_PSI)
             }
 
             psiFile.classes.forEach { it.addLookupSymbols(symbols) }

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/ChangesEither.kt

@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.incremental
 
+import org.jetbrains.kotlin.build.report.metrics.BuildAttribute
 import org.jetbrains.kotlin.name.FqName
 
 internal sealed class ChangesEither {
@@ -24,5 +25,5 @@ internal sealed class ChangesEither {
         val fqNames: Collection<FqName> = emptyList()
     ) : ChangesEither()
 
-    internal class Unknown(val reason: String? = null) : ChangesEither()
+    internal class Unknown(val reason: BuildAttribute) : ChangesEither()
 }

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/DirtyFilesContainer.kt

@@ -5,6 +5,7 @@
 
 package org.jetbrains.kotlin.incremental
 
+import org.jetbrains.kotlin.build.report.ICReporter
 import org.jetbrains.kotlin.name.FqName
 import java.io.File
 

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/IncrementalCachesManager.kt

@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.incremental
 
+import org.jetbrains.kotlin.build.report.ICReporter
 import org.jetbrains.kotlin.incremental.storage.BasicMapsOwner
 import org.jetbrains.kotlin.incremental.storage.IncrementalFileToPathConverter
 import org.jetbrains.kotlin.serialization.SerializerExtensionProtocol

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/IncrementalCompilerRunner.kt

@@ -18,6 +18,10 @@ package org.jetbrains.kotlin.incremental
 
 import org.jetbrains.kotlin.build.DEFAULT_KOTLIN_SOURCE_FILES_EXTENSIONS
 import org.jetbrains.kotlin.build.GeneratedFile
+import org.jetbrains.kotlin.build.report.BuildReporter
+import org.jetbrains.kotlin.build.report.metrics.BuildTime
+import org.jetbrains.kotlin.build.report.metrics.BuildAttribute
+import org.jetbrains.kotlin.build.report.metrics.measure
 import org.jetbrains.kotlin.cli.common.ExitCode
 import org.jetbrains.kotlin.cli.common.arguments.CommonCompilerArguments
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
@@ -41,7 +45,7 @@ abstract class IncrementalCompilerRunner<
         >(
     private val workingDir: File,
     cacheDirName: String,
-    protected val reporter: ICReporter,
+    protected val reporter: BuildReporter,
     private val buildHistoryFile: File,
     // there might be some additional output directories (e.g. for generated java in kapt)
     // to remove them correctly on rebuild, we pass them as additional argument
@@ -65,20 +69,33 @@ abstract class IncrementalCompilerRunner<
         // otherwise we track source files changes ourselves.
         providedChangedFiles: ChangedFiles?,
         projectDir: File? = null
+    ): ExitCode = reporter.measure(BuildTime.INCREMENTAL_COMPILATION) {
+        compileImpl(allSourceFiles, args, messageCollector, providedChangedFiles, projectDir)
+    }
+
+    private fun compileImpl(
+        allSourceFiles: List<File>,
+        args: Args,
+        messageCollector: MessageCollector,
+        providedChangedFiles: ChangedFiles?,
+        projectDir: File? = null
     ): ExitCode {
         assert(isICEnabled()) { "Incremental compilation is not enabled" }
         var caches = createCacheManager(args, projectDir)
 
-        fun rebuild(reason: () -> String): ExitCode {
-            reporter.report(reason)
+        fun rebuild(reason: BuildAttribute): ExitCode {
+            reporter.report { "Non-incremental compilation will be performed: $reason" }
             caches.close(false)
-            clearLocalStateOnRebuild(args)
+            // todo: we can recompile all files incrementally (not cleaning caches), so rebuild won't propagate
+            reporter.measure(BuildTime.CLEAR_OUTPUT_ON_REBUILD) {
+                clearLocalStateOnRebuild(args)
+            }
             caches = createCacheManager(args, projectDir)
             if (providedChangedFiles == null) {
                 caches.inputsCache.sourceSnapshotMap.compareAndUpdate(allSourceFiles)
             }
             val allKotlinFiles = allSourceFiles.filter { it.isKotlinFile(kotlinSourceFilesExtensions) }
-            return compileIncrementally(args, caches, allKotlinFiles, CompilationMode.Rebuild(), messageCollector)
+            return compileIncrementally(args, caches, allKotlinFiles, CompilationMode.Rebuild(reason), messageCollector)
         }
 
         return try {
@@ -90,16 +107,17 @@ abstract class IncrementalCompilerRunner<
                     compileIncrementally(args, caches, allSourceFiles, compilationMode, messageCollector)
                 }
                 is CompilationMode.Rebuild -> {
-                    rebuild { "Non-incremental compilation will be performed: ${compilationMode.reason}" }
+                    rebuild(compilationMode.reason)
                 }
             }
 
             if (!caches.close(flush = true)) throw RuntimeException("Could not flush caches")
 
             return exitCode
-        } catch (e: Exception) {
+        } catch (e: Exception) { // todo: catch only cache corruption
             // todo: warn?
-            rebuild { "Possible cache corruption. Rebuilding. $e" }
+            reporter.report { "Rebuilding because of possible caches corruption: $e" }
+            rebuild(BuildAttribute.CACHE_CORRUPTION)
         }
     }
 
@@ -139,10 +157,17 @@ abstract class IncrementalCompilerRunner<
     ): CompilationMode =
         when (changedFiles) {
             is ChangedFiles.Known -> calculateSourcesToCompile(caches, changedFiles, args, messageCollector)
-            is ChangedFiles.Unknown -> CompilationMode.Rebuild { "inputs' changes are unknown (first or clean build)" }
+            is ChangedFiles.Unknown -> CompilationMode.Rebuild(BuildAttribute.UNKNOWN_CHANGES_IN_GRADLE_INPUTS)
         }
 
-    protected abstract fun calculateSourcesToCompile(
+    private fun calculateSourcesToCompile(
+        caches: CacheManager, changedFiles: ChangedFiles.Known, args: Args, messageCollector: MessageCollector
+    ): CompilationMode =
+        reporter.measure(BuildTime.IC_CALCULATE_INITIAL_DIRTY_SET) {
+            calculateSourcesToCompileImpl(caches, changedFiles, args, messageCollector)
+        }
+
+    protected abstract fun calculateSourcesToCompileImpl(
         caches: CacheManager,
         changedFiles: ChangedFiles.Known,
         args: Args,
@@ -161,9 +186,7 @@ abstract class IncrementalCompilerRunner<
 
     protected sealed class CompilationMode {
         class Incremental(val dirtyFiles: DirtyFilesContainer) : CompilationMode()
-        class Rebuild(getReason: () -> String = { "" }) : CompilationMode() {
-            val reason: String by lazy(getReason)
-        }
+        class Rebuild(val reason: BuildAttribute) : CompilationMode()
     }
 
     protected abstract fun updateCaches(
@@ -211,9 +234,17 @@ abstract class IncrementalCompilerRunner<
     ): ExitCode {
         preBuildHook(args, compilationMode)
 
+        val buildTimeMode: BuildTime
         val dirtySources = when (compilationMode) {
-            is CompilationMode.Incremental -> compilationMode.dirtyFiles.toMutableList()
-            is CompilationMode.Rebuild -> allKotlinSources.toMutableList()
+            is CompilationMode.Incremental -> {
+                buildTimeMode = BuildTime.INCREMENTAL_ITERATION
+                compilationMode.dirtyFiles.toMutableList()
+            }
+            is CompilationMode.Rebuild -> {
+                buildTimeMode = BuildTime.NON_INCREMENTAL_ITERATION
+                reporter.addAttribute(compilationMode.reason)
+                allKotlinSources.toMutableList()
+            }
         }
 
         val currentBuildInfo = BuildInfo(startTS = System.currentTimeMillis())
@@ -247,7 +278,9 @@ abstract class IncrementalCompilerRunner<
             val bufferingMessageCollector = BufferingMessageCollector()
             val messageCollectorAdapter = MessageCollectorToOutputItemsCollectorAdapter(bufferingMessageCollector, outputItemsCollector)
 
-            exitCode = runCompiler(sourcesToCompile.toSet(), args, caches, services, messageCollectorAdapter)
+            exitCode = reporter.measure(buildTimeMode) {
+                runCompiler(sourcesToCompile.toSet(), args, caches, services, messageCollectorAdapter)
+            }
 
             val generatedFiles = outputItemsCollector.outputs.map(SimpleOutputItem::toGeneratedFile)
             if (compilationMode is CompilationMode.Incremental) {
@@ -268,12 +301,13 @@ abstract class IncrementalCompilerRunner<
 
             dirtySourcesSinceLastTimeFile.delete()
 
-            caches.platformCache.updateComplementaryFiles(dirtySources, expectActualTracker)
-            caches.inputsCache.registerOutputForSourceFiles(generatedFiles)
-            caches.lookupCache.update(lookupTracker, sourcesToCompile, removedKotlinSources)
             val changesCollector = ChangesCollector()
-            updateCaches(services, caches, generatedFiles, changesCollector)
-
+            reporter.measure(BuildTime.IC_UPDATE_CACHES) {
+                caches.platformCache.updateComplementaryFiles(dirtySources, expectActualTracker)
+                caches.inputsCache.registerOutputForSourceFiles(generatedFiles)
+                caches.lookupCache.update(lookupTracker, sourcesToCompile, removedKotlinSources)
+                updateCaches(services, caches, generatedFiles, changesCollector)
+            }
             if (compilationMode is CompilationMode.Rebuild) break
 
             val (dirtyLookupSymbols, dirtyClassFqNames) = changesCollector.getDirtyData(listOf(caches.platformCache), reporter)
@@ -339,7 +373,7 @@ abstract class IncrementalCompilerRunner<
         compilationMode: CompilationMode,
         currentBuildInfo: BuildInfo,
         dirtyData: DirtyData
-    ) {
+    ) = reporter.measure(BuildTime.IC_WRITE_HISTORY_FILE) {
         val prevDiffs = BuildDiffsStorage.readFromFile(buildHistoryFile, reporter)?.buildDiffs ?: emptyList()
         val newDiff = if (compilationMode is CompilationMode.Incremental) {
             BuildDifference(currentBuildInfo.startTS, true, dirtyData)

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/IncrementalJsCompilerRunner.kt

@@ -17,6 +17,10 @@
 package org.jetbrains.kotlin.incremental
 
 import org.jetbrains.kotlin.build.GeneratedFile
+import org.jetbrains.kotlin.build.report.BuildReporter
+import org.jetbrains.kotlin.build.report.ICReporter
+import org.jetbrains.kotlin.build.report.metrics.DoNothingBuildMetricsReporter
+import org.jetbrains.kotlin.build.report.metrics.BuildAttribute
 import org.jetbrains.kotlin.cli.common.ExitCode
 import org.jetbrains.kotlin.cli.common.arguments.K2JSCompilerArguments
 import org.jetbrains.kotlin.cli.common.arguments.isIrBackendEnabled
@@ -45,9 +49,10 @@ fun makeJsIncrementally(
         .filter { it.isFile && it.extension.equals("kt", ignoreCase = true) }.toList()
     val buildHistoryFile = File(cachesDir, "build-history.bin")
 
+    val buildReporter = BuildReporter(icReporter = reporter, buildMetricsReporter = DoNothingBuildMetricsReporter)
     withJsIC {
         val compiler = IncrementalJsCompilerRunner(
-            cachesDir, reporter,
+            cachesDir, buildReporter,
             buildHistoryFile = buildHistoryFile,
             modulesApiHistory = EmptyModulesApiHistory,
             scopeExpansion = scopeExpansion
@@ -69,7 +74,7 @@ inline fun <R> withJsIC(fn: () -> R): R {
 
 class IncrementalJsCompilerRunner(
     private val workingDir: File,
-    reporter: ICReporter,
+    reporter: BuildReporter,
     buildHistoryFile: File,
     private val modulesApiHistory: ModulesApiHistory,
     private val scopeExpansion: CompileScopeExpansionMode = CompileScopeExpansionMode.NEVER
@@ -90,14 +95,14 @@ class IncrementalJsCompilerRunner(
     override fun destinationDir(args: K2JSCompilerArguments): File =
         File(args.outputFile).parentFile
 
-    override fun calculateSourcesToCompile(
+    override fun calculateSourcesToCompileImpl(
         caches: IncrementalJsCachesManager,
         changedFiles: ChangedFiles.Known,
         args: K2JSCompilerArguments,
         messageCollector: MessageCollector
     ): CompilationMode {
         val lastBuildInfo = BuildInfo.read(lastBuildInfoFile)
-            ?: return CompilationMode.Rebuild { "No information on previous build" }
+            ?: return CompilationMode.Rebuild(BuildAttribute.NO_BUILD_HISTORY)
 
         val dirtyFiles = DirtyFilesContainer(caches, reporter, kotlinSourceFilesExtensions)
         initDirtyFiles(dirtyFiles, changedFiles)
@@ -107,9 +112,9 @@ class IncrementalJsCompilerRunner(
 
         @Suppress("UNUSED_VARIABLE") // for sealed when
         val unused = when (classpathChanges) {
-            is ChangesEither.Unknown -> return CompilationMode.Rebuild {
-                // todo: we can recompile all files incrementally (not cleaning caches), so rebuild won't propagate
-                "Could not get classpath's changes${classpathChanges.reason?.let { ": $it" }}"
+            is ChangesEither.Unknown -> {
+                reporter.report { "Could not get classpath's changes: ${classpathChanges.reason}" }
+                return CompilationMode.Rebuild(classpathChanges.reason)
             }
             is ChangesEither.Known -> {
                 dirtyFiles.addByDirtySymbols(classpathChanges.lookupSymbols)
@@ -117,7 +122,6 @@ class IncrementalJsCompilerRunner(
             }
         }
 
-
         val removedClassesChanges = getRemovedClassesChanges(caches, changedFiles)
         dirtyFiles.addByDirtySymbols(removedClassesChanges.dirtyLookupSymbols)
         dirtyFiles.addByDirtyClasses(removedClassesChanges.dirtyClassesFqNames)

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/IncrementalJvmCompilerRunner.kt

@@ -25,6 +25,10 @@ import com.intellij.psi.PsiJavaFile
 import org.jetbrains.kotlin.build.DEFAULT_KOTLIN_SOURCE_FILES_EXTENSIONS
 import org.jetbrains.kotlin.build.GeneratedFile
 import org.jetbrains.kotlin.build.GeneratedJvmClass
+import org.jetbrains.kotlin.build.report.BuildReporter
+import org.jetbrains.kotlin.build.report.ICReporter
+import org.jetbrains.kotlin.build.report.ICReporterBase
+import org.jetbrains.kotlin.build.report.metrics.*
 import org.jetbrains.kotlin.cli.common.CLIConfigurationKeys
 import org.jetbrains.kotlin.cli.common.ExitCode
 import org.jetbrains.kotlin.cli.common.arguments.K2JVMCompilerArguments
@@ -64,11 +68,12 @@ fun makeIncrementally(
     val sourceFiles = files.filter { it.extension.toLowerCase() in allExtensions }.toList()
     val buildHistoryFile = File(cachesDir, "build-history.bin")
     args.javaSourceRoots = sourceRoots.map { it.absolutePath }.toTypedArray()
+    val buildReporter = BuildReporter(icReporter = reporter, buildMetricsReporter = DoNothingBuildMetricsReporter)
 
     withIC {
         val compiler = IncrementalJvmCompilerRunner(
             cachesDir,
-            reporter,
+            buildReporter,
             // Use precise setting in case of non-Gradle build
             usePreciseJavaTracking = true,
             outputFiles = emptyList(),
@@ -104,7 +109,7 @@ inline fun <R> withIC(enabled: Boolean = true, fn: () -> R): R {
 
 class IncrementalJvmCompilerRunner(
     workingDir: File,
-    reporter: ICReporter,
+    reporter: BuildReporter,
     private val usePreciseJavaTracking: Boolean,
     buildHistoryFile: File,
     outputFiles: Collection<File>,
@@ -154,7 +159,7 @@ class IncrementalJvmCompilerRunner(
         else
             null
 
-    override fun calculateSourcesToCompile(
+    override fun calculateSourcesToCompileImpl(
         caches: IncrementalJvmCachesManager,
         changedFiles: ChangedFiles.Known,
         args: K2JVMCompilerArguments,
@@ -176,16 +181,20 @@ class IncrementalJvmCompilerRunner(
         val dirtyFiles = DirtyFilesContainer(caches, reporter, kotlinSourceFilesExtensions)
         initDirtyFiles(dirtyFiles, changedFiles)
 
-        val lastBuildInfo = BuildInfo.read(lastBuildInfoFile) ?: return CompilationMode.Rebuild { "No information on previous build" }
+        val lastBuildInfo = BuildInfo.read(lastBuildInfoFile) ?: return CompilationMode.Rebuild(BuildAttribute.NO_BUILD_HISTORY)
         reporter.reportVerbose { "Last Kotlin Build info -- $lastBuildInfo" }
 
-        val classpathChanges = getClasspathChanges(args.classpathAsList, changedFiles, lastBuildInfo, modulesApiHistory, reporter)
+        val classpathChanges = reporter.measure(BuildTime.IC_ANALYZE_CHANGES_IN_DEPENDENCIES) {
+            getClasspathChanges(args.classpathAsList, changedFiles, lastBuildInfo, modulesApiHistory, reporter)
+        }
 
         @Suppress("UNUSED_VARIABLE") // for sealed when
         val unused = when (classpathChanges) {
-            is ChangesEither.Unknown -> return CompilationMode.Rebuild {
-                // todo: we can recompile all files incrementally (not cleaning caches), so rebuild won't propagate
-                "Could not get classpath's changes${classpathChanges.reason?.let { ": $it" }}"
+            is ChangesEither.Unknown -> {
+                reporter.report {
+                    "Could not get classpath's changes: ${classpathChanges.reason}"
+                }
+                return CompilationMode.Rebuild(classpathChanges.reason)
             }
             is ChangesEither.Known -> {
                 dirtyFiles.addByDirtySymbols(classpathChanges.lookupSymbols)
@@ -194,21 +203,26 @@ class IncrementalJvmCompilerRunner(
             }
         }
 
-        if (!usePreciseJavaTracking) {
-            val javaFilesChanges = javaFilesProcessor!!.process(changedFiles)
-            val affectedJavaSymbols = when (javaFilesChanges) {
-                is ChangesEither.Known -> javaFilesChanges.lookupSymbols
-                is ChangesEither.Unknown -> return CompilationMode.Rebuild { "Could not get changes for java files" }
-            }
-            dirtyFiles.addByDirtySymbols(affectedJavaSymbols)
-        } else {
-            if (!processChangedJava(changedFiles, caches)) {
-                return CompilationMode.Rebuild { "Could not get changes for java files" }
+        reporter.measure(BuildTime.IC_ANALYZE_CHANGES_IN_JAVA_SOURCES) {
+            if (!usePreciseJavaTracking) {
+                val javaFilesChanges = javaFilesProcessor!!.process(changedFiles)
+                val affectedJavaSymbols = when (javaFilesChanges) {
+                    is ChangesEither.Known -> javaFilesChanges.lookupSymbols
+                    is ChangesEither.Unknown -> return CompilationMode.Rebuild(javaFilesChanges.reason)
+                }
+                dirtyFiles.addByDirtySymbols(affectedJavaSymbols)
+            } else {
+                val rebuildReason = processChangedJava(changedFiles, caches)
+                if (rebuildReason != null) return CompilationMode.Rebuild(rebuildReason)
             }
         }
 
-        val androidLayoutChanges = processLookupSymbolsForAndroidLayouts(changedFiles)
-        val removedClassesChanges = getRemovedClassesChanges(caches, changedFiles)
+        val androidLayoutChanges = reporter.measure(BuildTime.IC_ANALYZE_CHANGES_IN_ANDROID_LAYOUTS) {
+            processLookupSymbolsForAndroidLayouts(changedFiles)
+        }
+        val removedClassesChanges = reporter.measure(BuildTime.IC_DETECT_REMOVED_CLASSES) {
+            getRemovedClassesChanges(caches, changedFiles)
+        }
 
         dirtyFiles.addByDirtySymbols(androidLayoutChanges)
         dirtyFiles.addByDirtySymbols(removedClassesChanges.dirtyLookupSymbols)
@@ -217,7 +231,7 @@ class IncrementalJvmCompilerRunner(
         return CompilationMode.Incremental(dirtyFiles)
     }
 
-    private fun processChangedJava(changedFiles: ChangedFiles.Known, caches: IncrementalJvmCachesManager): Boolean {
+    private fun processChangedJava(changedFiles: ChangedFiles.Known, caches: IncrementalJvmCachesManager): BuildAttribute? {
         val javaFiles = (changedFiles.modified + changedFiles.removed).filter(File::isJavaFile)
 
         for (javaFile in javaFiles) {
@@ -225,20 +239,20 @@ class IncrementalJvmCompilerRunner(
                 if (!javaFile.exists()) {
                     // todo: can we do this more optimal?
                     reporter.report { "Could not get changed for untracked removed java file $javaFile" }
-                    return false
+                    return BuildAttribute.JAVA_CHANGE_UNTRACKED_FILE_IS_REMOVED
                 }
 
                 val psiFile = psiFileProvider.javaFile(javaFile)
                 if (psiFile !is PsiJavaFile) {
                     reporter.report { "[Precise Java tracking] Expected PsiJavaFile, got ${psiFile?.javaClass}" }
-                    return false
+                    return BuildAttribute.JAVA_CHANGE_UNEXPECTED_PSI
                 }
 
                 for (psiClass in psiFile.classes) {
                     val qualifiedName = psiClass.qualifiedName
                     if (qualifiedName == null) {
                         reporter.report { "[Precise Java tracking] Class with unknown qualified name in $javaFile" }
-                        return false
+                        return BuildAttribute.JAVA_CHANGE_UNKNOWN_QUALIFIER
                     }
 
                     processChangedUntrackedJavaClass(psiClass, ClassId.topLevel(FqName(qualifiedName)))
@@ -247,7 +261,7 @@ class IncrementalJvmCompilerRunner(
         }
 
         caches.platformCache.markDirty(javaFiles)
-        return true
+        return null
     }
 
     private fun processChangedUntrackedJavaClass(psiClass: PsiClass, classId: ClassId) {

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/InputsCache.kt

@@ -18,6 +18,7 @@ package org.jetbrains.kotlin.incremental
 
 import com.intellij.util.containers.MultiMap
 import org.jetbrains.kotlin.build.GeneratedFile
+import org.jetbrains.kotlin.build.report.ICReporter
 import org.jetbrains.kotlin.incremental.snapshots.FileSnapshotMap
 import org.jetbrains.kotlin.incremental.storage.BasicMapsOwner
 import org.jetbrains.kotlin.incremental.storage.SourceToOutputFilesMap

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/changesDetectionUtils.kt

@@ -5,6 +5,10 @@
 
 package org.jetbrains.kotlin.incremental
 
+import org.jetbrains.kotlin.build.report.BuildReporter
+import org.jetbrains.kotlin.build.report.metrics.BuildTime
+import org.jetbrains.kotlin.build.report.metrics.BuildAttribute
+import org.jetbrains.kotlin.build.report.metrics.measure
 import org.jetbrains.kotlin.incremental.multiproject.ModulesApiHistory
 import org.jetbrains.kotlin.incremental.util.Either
 import org.jetbrains.kotlin.name.FqName
@@ -15,7 +19,7 @@ internal fun getClasspathChanges(
     changedFiles: ChangedFiles.Known,
     lastBuildInfo: BuildInfo,
     modulesApiHistory: ModulesApiHistory,
-    reporter: ICReporter?
+    reporter: BuildReporter
 ): ChangesEither {
     val classpathSet = HashSet<File>()
     for (file in classpath) {
@@ -29,7 +33,10 @@ internal fun getClasspathChanges(
     val removedClasspath = changedFiles.removed.filterTo(HashSet()) { it in classpathSet }
 
     // todo: removed classes could be processed normally
-    if (removedClasspath.isNotEmpty()) return ChangesEither.Unknown("Some files are removed from classpath $removedClasspath")
+    if (removedClasspath.isNotEmpty()) {
+        reporter.report { "Some files are removed from classpath: $removedClasspath" }
+        return ChangesEither.Unknown(BuildAttribute.DEP_CHANGE_REMOVED_ENTRY)
+    }
 
     if (modifiedClasspath.isEmpty()) return ChangesEither.Known()
 
@@ -38,28 +45,47 @@ internal fun getClasspathChanges(
     val symbols = HashSet<LookupSymbol>()
     val fqNames = HashSet<FqName>()
 
-    val historyFilesEither = modulesApiHistory.historyFilesForChangedFiles(modifiedClasspath)
+    val historyFilesEither =
+        reporter.measure(BuildTime.IC_FIND_HISTORY_FILES) {
+            modulesApiHistory.historyFilesForChangedFiles(modifiedClasspath)
+        }
     val historyFiles = when (historyFilesEither) {
         is Either.Success<Set<File>> -> historyFilesEither.value
-        is Either.Error -> return ChangesEither.Unknown(historyFilesEither.reason)
-    }
-
-    for (historyFile in historyFiles) {
-        val allBuilds = BuildDiffsStorage.readDiffsFromFile(historyFile, reporter = reporter)
-            ?: return ChangesEither.Unknown("Could not read diffs from $historyFile")
-        val (knownBuilds, newBuilds) = allBuilds.partition { it.ts <= lastBuildTS }
-        if (knownBuilds.isEmpty()) {
-            return ChangesEither.Unknown("No previously known builds for $historyFile")
-        }
-
-        for (buildDiff in newBuilds) {
-            if (!buildDiff.isIncremental) return ChangesEither.Unknown("Non-incremental build from dependency $historyFile")
-
-            val dirtyData = buildDiff.dirtyData
-            symbols.addAll(dirtyData.dirtyLookupSymbols)
-            fqNames.addAll(dirtyData.dirtyClassesFqNames)
+        is Either.Error -> {
+            reporter.report { "Could not find history files: ${historyFilesEither.reason}" }
+            return ChangesEither.Unknown(BuildAttribute.DEP_CHANGE_HISTORY_IS_NOT_FOUND)
         }
     }
 
-    return ChangesEither.Known(symbols, fqNames)
+    fun analyzeHistoryFiles(): ChangesEither {
+        for (historyFile in historyFiles) {
+            val allBuilds = BuildDiffsStorage.readDiffsFromFile(historyFile, reporter = reporter)
+                ?: return run {
+                    reporter.report { "Could not read diffs from $historyFile" }
+                    ChangesEither.Unknown(BuildAttribute.DEP_CHANGE_HISTORY_CANNOT_BE_READ)
+                }
+            val (knownBuilds, newBuilds) = allBuilds.partition { it.ts <= lastBuildTS }
+            if (knownBuilds.isEmpty()) {
+                reporter.report { "No previously known builds for $historyFile" }
+                return ChangesEither.Unknown(BuildAttribute.DEP_CHANGE_HISTORY_NO_KNOWN_BUILDS)
+            }
+
+            for (buildDiff in newBuilds) {
+                if (!buildDiff.isIncremental) {
+                    reporter.report { "Non-incremental build from dependency $historyFile" }
+                    return ChangesEither.Unknown(BuildAttribute.DEP_CHANGE_NON_INCREMENTAL_BUILD_IN_DEP)
+
+                }
+                val dirtyData = buildDiff.dirtyData
+                symbols.addAll(dirtyData.dirtyLookupSymbols)
+                fqNames.addAll(dirtyData.dirtyClassesFqNames)
+            }
+        }
+
+        return ChangesEither.Known(symbols, fqNames)
+    }
+
+    return reporter.measure(BuildTime.IC_ANALYZE_HISTORY_FILES) {
+        analyzeHistoryFiles()
+    }
 }

compiler/incremental-compilation-impl/test/org/jetbrains/kotlin/incremental/utils/TestICReporter.kt

@@ -17,7 +17,7 @@
 package org.jetbrains.kotlin.incremental.utils
 
 import org.jetbrains.kotlin.cli.common.ExitCode
-import org.jetbrains.kotlin.incremental.ICReporterBase
+import org.jetbrains.kotlin.build.report.ICReporterBase
 import java.io.File
 
 class TestICReporter : ICReporterBase() {

jps-plugin/src/org/jetbrains/kotlin/jps/build/KotlinBuilder.kt

@@ -42,7 +42,7 @@ import org.jetbrains.kotlin.daemon.common.isDaemonEnabled
 import org.jetbrains.kotlin.incremental.*
 import org.jetbrains.kotlin.incremental.components.ExpectActualTracker
 import org.jetbrains.kotlin.incremental.components.LookupTracker
-import org.jetbrains.kotlin.incremental.ICReporterBase
+import org.jetbrains.kotlin.build.report.ICReporterBase
 import org.jetbrains.kotlin.jps.incremental.JpsIncrementalCache
 import org.jetbrains.kotlin.jps.incremental.JpsLookupStorageManager
 import org.jetbrains.kotlin.jps.model.kotlinKind

js/js.tests/test/org/jetbrains/kotlin/benchmarks/GenerateIrRuntime.kt

@@ -18,6 +18,8 @@ import org.jetbrains.kotlin.backend.common.phaser.invokeToplevel
 import org.jetbrains.kotlin.backend.common.serialization.KlibIrVersion
 import org.jetbrains.kotlin.backend.common.serialization.metadata.KlibMetadataVersion
 import org.jetbrains.kotlin.backend.common.serialization.signature.IdSignatureDescriptor
+import org.jetbrains.kotlin.build.report.BuildReporter
+import org.jetbrains.kotlin.build.report.metrics.DoNothingBuildMetricsReporter
 import org.jetbrains.kotlin.cli.common.arguments.K2JSCompilerArguments
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 import org.jetbrains.kotlin.cli.jvm.compiler.EnvironmentConfigFiles
@@ -316,7 +318,7 @@ class GenerateIrRuntime {
         withJsIC {
             val buildHistoryFile = File(cachesDir, "build-history.bin")
             val compiler = IncrementalJsCompilerRunner(
-                cachesDir, EmptyICReporter,
+                cachesDir, BuildReporter(EmptyICReporter, DoNothingBuildMetricsReporter),
                 buildHistoryFile = buildHistoryFile,
                 modulesApiHistory = EmptyModulesApiHistory
             )
@@ -360,7 +362,7 @@ class GenerateIrRuntime {
             withJsIC {
                 val buildHistoryFile = File(cachesDir, "build-history.bin")
                 val compiler = IncrementalJsCompilerRunner(
-                    cachesDir, EmptyICReporter,
+                    cachesDir, BuildReporter(EmptyICReporter, DoNothingBuildMetricsReporter),
                     buildHistoryFile = buildHistoryFile,
                     modulesApiHistory = EmptyModulesApiHistory
                 )

libraries/tools/kotlin-gradle-build-metrics/build.gradle.kts

@@ -0,0 +1,24 @@
+description = "kotlin-gradle-statistics"
+
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
+
+dependencies {
+    compileOnly(kotlinStdlib())
+
+    testImplementation(project(":kotlin-test:kotlin-test-junit"))
+    testImplementation("junit:junit:4.12")
+}
+
+sourceSets {
+    "main" { projectDefault() }
+    "test" { projectDefault() }
+}
+
+projectTest {
+    workingDir = rootDir
+}
+
+publish()

libraries/tools/kotlin-gradle-build-metrics/src/org/jetbrains/kotlin/gradle/internal/build/metrics/GradleBuildMetricsData.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.internal.build.metrics
+
+import java.io.Serializable
+
+class GradleBuildMetricsData : Serializable {
+    val parentMetric: MutableMap<String, String?> = LinkedHashMap()
+    val buildAttributeKind: MutableMap<String, String> = LinkedHashMap()
+    val taskData: MutableMap<String, TaskData> = LinkedHashMap()
+
+    companion object {
+        const val serialVersionUID = 0L
+    }
+}
+
+data class TaskData(
+    val path: String,
+    val typeFqName: String,
+    val timeMetrics: Map<String, Long>,
+    val buildAttributes: Map<String, Int>,
+    val didWork: Boolean
+) : Serializable {
+
+    companion object {
+        const val serialVersionUID = 0L
+    }
+}

libraries/tools/kotlin-gradle-plugin/build.gradle.kts

@@ -52,6 +52,8 @@ dependencies {
     compileOnly(project(":kotlin-scripting-compiler"))
     compileOnly(project(":kotlin-gradle-statistics"))
     embedded(project(":kotlin-gradle-statistics"))
+    compileOnly(project(":kotlin-gradle-build-metrics"))
+    embedded(project(":kotlin-gradle-build-metrics"))
 
     compile("com.google.code.gson:gson:${rootProject.extra["versions.jar.gson"]}")
     compile("de.undercouch:gradle-download-task:4.0.2")

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/compilerRunner/GradleCompilationResults.kt

@@ -1,5 +1,7 @@
 package org.jetbrains.kotlin.compilerRunner
 
+import org.jetbrains.kotlin.build.report.metrics.BuildMetrics
+import org.jetbrains.kotlin.build.report.metrics.BuildMetricsReporterImpl
 import org.jetbrains.kotlin.daemon.common.CompilationResultCategory
 import org.jetbrains.kotlin.daemon.common.CompilationResults
 import org.jetbrains.kotlin.daemon.common.LoopbackNetworkInterface
@@ -22,7 +24,10 @@ internal class GradleCompilationResults(
         LoopbackNetworkInterface.serverLoopbackSocketFactory
     ) {
 
-    var icLogLines: List<String>? = null
+    var icLogLines: List<String> = emptyList()
+    private val buildMetricsReporter = BuildMetricsReporterImpl()
+    val buildMetrics: BuildMetrics
+        get() = buildMetricsReporter.getMetrics()
 
     @Throws(RemoteException::class)
     override fun add(compilationResultCategory: Int, value: Serializable) {
@@ -42,7 +47,10 @@ internal class GradleCompilationResults(
             CompilationResultCategory.BUILD_REPORT_LINES.code,
             CompilationResultCategory.VERBOSE_BUILD_REPORT_LINES.code -> {
                 @Suppress("UNCHECKED_CAST")
-                icLogLines = value as? List<String>
+                (value as? List<String>)?.let { icLogLines = it }
+            }
+            CompilationResultCategory.BUILD_METRICS.code -> {
+                buildMetricsReporter.addMetrics(value as? BuildMetrics)
             }
         }
     }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/compilerRunner/GradleCompilerEnvironment.kt

@@ -8,7 +8,7 @@ package org.jetbrains.kotlin.compilerRunner
 import org.gradle.api.file.FileCollection
 import org.jetbrains.kotlin.config.Services
 import org.jetbrains.kotlin.gradle.logging.GradlePrintingMessageCollector
-import org.jetbrains.kotlin.gradle.report.BuildReportMode
+import org.jetbrains.kotlin.gradle.report.ReportingSettings
 import org.jetbrains.kotlin.gradle.tasks.findToolsJar
 import java.io.File
 
@@ -17,7 +17,7 @@ internal class GradleCompilerEnvironment(
     messageCollector: GradlePrintingMessageCollector,
     outputItemsCollector: OutputItemsCollector,
     val outputFiles: FileCollection,
-    val buildReportMode: BuildReportMode?,
+    val reportingSettings: ReportingSettings,
     val incrementalCompilationEnvironment: IncrementalCompilationEnvironment? = null,
     val kotlinScriptExtensions: Array<String> = emptyArray()
 ) : CompilerEnvironment(Services.EMPTY, messageCollector, outputItemsCollector) {

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/compilerRunner/GradleKotlinCompilerRunner.kt

@@ -160,7 +160,7 @@ internal open class GradleCompilerRunner(protected val taskProvider: GradleCompi
             incrementalModuleInfo = modulesInfo,
             outputFiles = environment.outputFiles.toList(),
             taskPath = pathProvider,
-            buildReportMode = environment.buildReportMode,
+            reportingSettings = environment.reportingSettings,
             kotlinScriptExtensions = environment.kotlinScriptExtensions,
             allWarningsAsErrors = compilerArgs.allWarningsAsErrors
         )

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/compilerRunner/GradleKotlinCompilerWork.kt

@@ -7,6 +7,8 @@ package org.jetbrains.kotlin.compilerRunner
 
 import org.gradle.api.Project
 import org.gradle.api.logging.Logger
+import org.jetbrains.kotlin.build.ExecutionStrategy
+import org.jetbrains.kotlin.build.report.metrics.*
 import org.jetbrains.kotlin.cli.common.ExitCode
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 import org.jetbrains.kotlin.config.Services
@@ -15,6 +17,7 @@ import org.jetbrains.kotlin.gradle.logging.*
 import org.jetbrains.kotlin.gradle.plugin.internal.state.TaskExecutionResults
 import org.jetbrains.kotlin.gradle.plugin.internal.state.TaskLoggers
 import org.jetbrains.kotlin.gradle.report.BuildReportMode
+import org.jetbrains.kotlin.gradle.report.ReportingSettings
 import org.jetbrains.kotlin.gradle.report.TaskExecutionResult
 import org.jetbrains.kotlin.gradle.tasks.clearLocalState
 import org.jetbrains.kotlin.gradle.tasks.throwGradleExceptionIfError
@@ -59,7 +62,7 @@ internal class GradleKotlinCompilerWorkArguments(
     val incrementalModuleInfo: IncrementalModuleInfo?,
     val outputFiles: List<File>,
     val taskPath: String,
-    val buildReportMode: BuildReportMode?,
+    val reportingSettings: ReportingSettings,
     val kotlinScriptExtensions: Array<String>,
     val allWarningsAsErrors: Boolean
 ) : Serializable {
@@ -98,10 +101,12 @@ internal class GradleKotlinCompilerWork @Inject constructor(
     private val incrementalModuleInfo = config.incrementalModuleInfo
     private val outputFiles = config.outputFiles
     private val taskPath = config.taskPath
-    private val buildReportMode = config.buildReportMode
+    private val reportingSettings = config.reportingSettings
     private val kotlinScriptExtensions = config.kotlinScriptExtensions
     private val allWarningsAsErrors = config.allWarningsAsErrors
     private val buildDir = config.projectFiles.buildDir
+    private val metrics = if (reportingSettings.reportMetrics) BuildMetricsReporterImpl() else DoNothingBuildMetricsReporter
+    private var icLogLines: List<String> = emptyList()
 
     private val log: KotlinLogger =
         TaskLoggers.get(taskPath)?.let { GradleKotlinLogger(it).apply { debug("Using '$taskPath' logger") } }
@@ -120,13 +125,18 @@ internal class GradleKotlinCompilerWork @Inject constructor(
         get() = incrementalCompilationEnvironment != null
 
     override fun run() {
-        val messageCollector = GradlePrintingMessageCollector(log, allWarningsAsErrors)
-        val exitCode = compileWithDaemonOrFallbackImpl(messageCollector)
-        if (incrementalCompilationEnvironment?.disableMultiModuleIC == true) {
-            incrementalCompilationEnvironment.multiModuleICSettings.buildHistoryFile.delete()
-        }
+        try {
+            val messageCollector = GradlePrintingMessageCollector(log, allWarningsAsErrors)
+            val exitCode = compileWithDaemonOrFallbackImpl(messageCollector)
+            if (incrementalCompilationEnvironment?.disableMultiModuleIC == true) {
+                incrementalCompilationEnvironment.multiModuleICSettings.buildHistoryFile.delete()
+            }
 
-        throwGradleExceptionIfError(exitCode)
+            throwGradleExceptionIfError(exitCode)
+        } finally {
+            val result = TaskExecutionResult(buildMetrics = metrics.getMetrics(), icLogLines = icLogLines)
+            TaskExecutionResults[taskPath] = result
+        }
     }
 
     private fun compileWithDaemonOrFallbackImpl(messageCollector: MessageCollector): ExitCode {
@@ -159,20 +169,21 @@ internal class GradleKotlinCompilerWork @Inject constructor(
         val isDebugEnabled = log.isDebugEnabled || System.getProperty("kotlin.daemon.debug.log")?.toBoolean() ?: true
         val daemonMessageCollector =
             if (isDebugEnabled) messageCollector else MessageCollector.NONE
-
         val connection =
-            try {
-                GradleCompilerRunner.getDaemonConnectionImpl(
-                    clientIsAliveFlagFile,
-                    sessionFlagFile,
-                    compilerFullClasspath,
-                    daemonMessageCollector,
-                    isDebugEnabled = isDebugEnabled
-                )
-            } catch (e: Throwable) {
-                log.error("Caught an exception trying to connect to Kotlin Daemon:")
-                log.error(e.stackTraceAsString())
-                null
+            metrics.measure(BuildTime.CONNECT_TO_DAEMON) {
+                try {
+                    GradleCompilerRunner.getDaemonConnectionImpl(
+                        clientIsAliveFlagFile,
+                        sessionFlagFile,
+                        compilerFullClasspath,
+                        daemonMessageCollector,
+                        isDebugEnabled = isDebugEnabled
+                    )
+                } catch (e: Throwable) {
+                    log.error("Caught an exception trying to connect to Kotlin Daemon:")
+                    log.error(e.stackTraceAsString())
+                    null
+                }
             }
         if (connection == null) {
             if (isIncremental) {
@@ -215,7 +226,9 @@ internal class GradleKotlinCompilerWork @Inject constructor(
         // often source of the NoSuchObjectException and UnmarshalException, probably caused by the failed/crashed/exited daemon
         // TODO: implement a proper logic to avoid remote calls in such cases
         try {
-            daemon.clearJarCache()
+            metrics.measure(BuildTime.CLEAR_JAR_CACHE) {
+                daemon.clearJarCache()
+            }
         } catch (e: RemoteException) {
             log.warn("Unable to clear jar cache after compilation, maybe daemon is already down: $e")
         }
@@ -229,6 +242,7 @@ internal class GradleKotlinCompilerWork @Inject constructor(
         targetPlatform: CompileService.TargetPlatform,
         bufferingMessageCollector: GradleBufferingMessageCollector
     ): CompileService.CallResult<Int> {
+        metrics.addAttribute(BuildAttribute.IC_IS_NOT_ENABLED)
         val compilationOptions = CompilationOptions(
             compilerMode = CompilerMode.NON_INCREMENTAL_COMPILER,
             targetPlatform = targetPlatform,
@@ -238,15 +252,8 @@ internal class GradleKotlinCompilerWork @Inject constructor(
             kotlinScriptExtensions = kotlinScriptExtensions
         )
         val servicesFacade = GradleCompilerServicesFacadeImpl(log, bufferingMessageCollector)
-        return try {
+        return metrics.measure(BuildTime.NON_INCREMENTAL_COMPILATION_DAEMON) {
             daemon.compile(sessionId, compilerArgs, compilationOptions, servicesFacade, compilationResults = null)
-        } finally {
-            reportExecutionResultIfNeeded {
-                TaskExecutionResult(
-                    executionStrategy = DAEMON_EXECUTION_STRATEGY,
-                    icLogLines = nonIcBuildLog("incremental compilation is not enabled for '$taskPath'")
-                )
-            }
         }
     }
 
@@ -258,14 +265,7 @@ internal class GradleKotlinCompilerWork @Inject constructor(
     ): CompileService.CallResult<Int> {
         val icEnv = incrementalCompilationEnvironment ?: error("incrementalCompilationEnvironment is null!")
         val knownChangedFiles = icEnv.changedFiles as? ChangedFiles.Known
-
-        val requestedCompilationResults = EnumSet.of(CompilationResultCategory.IC_COMPILE_ITERATION)
-        when (buildReportMode) {
-            BuildReportMode.SIMPLE -> CompilationResultCategory.BUILD_REPORT_LINES
-            BuildReportMode.VERBOSE -> CompilationResultCategory.VERBOSE_BUILD_REPORT_LINES
-            null -> null
-        }?.let { requestedCompilationResults.add(it) }
-
+        val requestedCompilationResults = requestedCompilationResults()
         val compilationOptions = IncrementalCompilationOptions(
             areFileChangesKnown = knownChangedFiles != null,
             modifiedFiles = knownChangedFiles?.modified,
@@ -286,36 +286,28 @@ internal class GradleKotlinCompilerWork @Inject constructor(
         log.info("Options for KOTLIN DAEMON: $compilationOptions")
         val servicesFacade = GradleIncrementalCompilerServicesFacadeImpl(log, bufferingMessageCollector)
         val compilationResults = GradleCompilationResults(log, projectRootFile)
-        val result = daemon.compile(sessionId, compilerArgs, compilationOptions, servicesFacade, compilationResults)
-
-        reportExecutionResultIfNeeded {
-            TaskExecutionResult(
-                executionStrategy = DAEMON_EXECUTION_STRATEGY,
-                icLogLines = compilationResults.icLogLines
-            )
+        return metrics.measure(BuildTime.RUN_COMPILER) {
+            daemon.compile(sessionId, compilerArgs, compilationOptions, servicesFacade, compilationResults)
+        }.also {
+            metrics.addMetrics(compilationResults.buildMetrics)
+            icLogLines = compilationResults.icLogLines
         }
-
-        return result
     }
 
     private fun compileOutOfProcess(): ExitCode {
-        clearLocalState(outputFiles, log, reason = "out-of-process execution strategy is non-incremental")
+        metrics.addAttribute(BuildAttribute.OUT_OF_PROCESS_EXECUTION)
+        clearLocalState(outputFiles, log, metrics, reason = "out-of-process execution strategy is non-incremental")
 
-        return try {
+        return metrics.measure(BuildTime.NON_INCREMENTAL_COMPILATION_OUT_OF_PROCESS) {
             runToolInSeparateProcess(compilerArgs, compilerClassName, compilerFullClasspath, log, buildDir)
-        } finally {
-            reportExecutionResultIfNeeded {
-                TaskExecutionResult(
-                    executionStrategy = OUT_OF_PROCESS_EXECUTION_STRATEGY,
-                    icLogLines = nonIcBuildLog("$OUT_OF_PROCESS_EXECUTION_STRATEGY execution strategy does not support incremental compilation")
-                )
-            }
         }
     }
 
     private fun compileInProcess(messageCollector: MessageCollector): ExitCode {
-        clearLocalState(outputFiles, log, reason = "in-process execution strategy is non-incremental")
+        metrics.addAttribute(BuildAttribute.IN_PROCESS_EXECUTION)
+        clearLocalState(outputFiles, log, metrics, reason = "in-process execution strategy is non-incremental")
 
+        metrics.startMeasure(BuildTime.NON_INCREMENTAL_COMPILATION_IN_PROCESS, System.nanoTime())
         // in-process compiler should always be run in a different thread
         // to avoid leaking thread locals from compiler (see KT-28037)
         val threadPool = Executors.newSingleThreadExecutor()
@@ -329,12 +321,7 @@ internal class GradleKotlinCompilerWork @Inject constructor(
             bufferingMessageCollector.flush(messageCollector)
             threadPool.shutdown()
 
-            reportExecutionResultIfNeeded {
-                TaskExecutionResult(
-                    executionStrategy = IN_PROCESS_EXECUTION_STRATEGY,
-                    icLogLines = nonIcBuildLog("$IN_PROCESS_EXECUTION_STRATEGY execution strategy does not support incremental compilation")
-                )
-            }
+            metrics.endMeasure(BuildTime.NON_INCREMENTAL_COMPILATION_IN_PROCESS, System.nanoTime())
         }
     }
 
@@ -366,6 +353,19 @@ internal class GradleKotlinCompilerWork @Inject constructor(
         return exitCode
     }
 
+    private fun requestedCompilationResults(): EnumSet<CompilationResultCategory> {
+        val requestedCompilationResults = EnumSet.of(CompilationResultCategory.IC_COMPILE_ITERATION)
+        when (reportingSettings.buildReportMode) {
+            BuildReportMode.NONE -> null
+            BuildReportMode.SIMPLE -> CompilationResultCategory.BUILD_REPORT_LINES
+            BuildReportMode.VERBOSE -> CompilationResultCategory.VERBOSE_BUILD_REPORT_LINES
+        }?.let { requestedCompilationResults.add(it) }
+        if (reportingSettings.reportMetrics) {
+            requestedCompilationResults.add(CompilationResultCategory.BUILD_METRICS)
+        }
+        return requestedCompilationResults
+    }
+
     private fun reportCategories(verbose: Boolean): Array<Int> =
         if (!verbose) {
             arrayOf(ReportCategory.COMPILER_MESSAGE.code)
@@ -379,14 +379,4 @@ internal class GradleKotlinCompilerWork @Inject constructor(
         } else {
             ReportSeverity.DEBUG.code
         }
-
-    private inline fun reportExecutionResultIfNeeded(fn: () -> TaskExecutionResult) {
-        if (buildReportMode != null) {
-            val result = fn()
-            TaskExecutionResults[taskPath] = result
-        }
-    }
-
-    private fun nonIcBuildLog(reason: String): List<String> =
-        listOf("Performing non-incremental build: $reason")
 }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/kapt/KaptTask.kt

@@ -5,6 +5,8 @@ import org.gradle.api.file.FileCollection
 import org.gradle.api.internal.ConventionTask
 import org.gradle.api.tasks.*
 import org.gradle.api.tasks.incremental.IncrementalTaskInputs
+import org.jetbrains.kotlin.build.report.metrics.BuildMetricsReporter
+import org.jetbrains.kotlin.build.report.metrics.BuildMetricsReporterImpl
 import org.jetbrains.kotlin.gradle.internal.kapt.incremental.ClasspathSnapshot
 import org.jetbrains.kotlin.gradle.internal.kapt.incremental.KaptClasspathChanges
 import org.jetbrains.kotlin.gradle.internal.kapt.incremental.KaptIncrementalChanges
@@ -137,6 +139,10 @@ abstract class KaptTask : ConventionTask(), TaskWithLocalState {
     protected val javaSourceRoots: Set<File>
         get() = unfilteredJavaSourceRoots.filterTo(HashSet(), ::isRootAllowed)
 
+    @get:Internal
+    override val metrics: BuildMetricsReporter =
+        BuildMetricsReporterImpl()
+
     private fun isRootAllowed(file: File): Boolean =
         file.exists() &&
                 !isAncestor(destinationDir, file) &&

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/kapt/KaptWithKotlincTask.kt

@@ -84,7 +84,7 @@ open class KaptWithKotlincTask : KaptTask(), CompilerArgumentAwareWithInput<K2JV
     private var processIncrementally = false
 
     private val javaPackagePrefix by project.optionalProvider { kotlinCompileTask.javaPackagePrefix }
-    private val buildReportMode by project.optionalProvider { kotlinCompileTask.buildReportMode }
+    private val reportingSettings by project.provider { kotlinCompileTask.reportingSettings }
 
     @TaskAction
     fun compile(inputs: IncrementalTaskInputs) {
@@ -104,7 +104,7 @@ open class KaptWithKotlincTask : KaptTask(), CompilerArgumentAwareWithInput<K2JV
         val outputItemCollector = OutputItemsCollectorImpl()
         val environment = GradleCompilerEnvironment(
             compilerClasspath, messageCollector, outputItemCollector,
-            buildReportMode = buildReportMode,
+            reportingSettings = reportingSettings,
             outputFiles = allOutputFiles()
         )
         if (environment.toolsJar == null && !isAtLeastJava9) {

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/internal/tasks/TaskWithLocalState.kt

@@ -7,9 +7,15 @@ package org.jetbrains.kotlin.gradle.internal.tasks
 
 import org.gradle.api.Task
 import org.gradle.api.file.FileCollection
+import org.gradle.api.tasks.Internal
+import org.jetbrains.kotlin.build.report.metrics.BuildMetricsReporter
+import org.jetbrains.kotlin.gradle.utils.outputsCompatible
 
 internal interface TaskWithLocalState : Task {
     fun localStateDirectories(): FileCollection
+
+    @get:Internal
+    val metrics: BuildMetricsReporter
 }
 
 internal fun TaskWithLocalState.allOutputFiles(): FileCollection =

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinGradleBuildServices.kt

@@ -13,10 +13,9 @@ import org.gradle.api.logging.Logging
 import org.jetbrains.kotlin.gradle.logging.kotlinDebug
 import org.jetbrains.kotlin.gradle.plugin.internal.state.TaskExecutionResults
 import org.jetbrains.kotlin.gradle.plugin.internal.state.TaskLoggers
-import org.jetbrains.kotlin.gradle.report.configureBuildReporter
+import org.jetbrains.kotlin.gradle.report.configureReporting
 import org.jetbrains.kotlin.gradle.utils.isConfigurationCacheAvailable
 
-
 //Support Gradle 6 and less. Move to
 internal class KotlinGradleBuildServices private constructor(
     private val gradle: Gradle
@@ -99,7 +98,7 @@ internal class KotlinGradleBuildServices private constructor(
         TaskLoggers.clear()
         TaskExecutionResults.clear()
 
-        configureBuildReporter(gradle, log)
+        configureReporting(gradle)
     }
 
     override fun buildFinished(result: BuildResult) {

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinProperties.kt

@@ -57,9 +57,15 @@ internal class PropertiesProvider private constructor(private val project: Proje
     val coroutines: Coroutines?
         get() = property("kotlin.coroutines")?.let { Coroutines.byCompilerArgument(it) }
 
+    val singleBuildMetricsFile: File?
+        get() = property("kotlin.internal.single.build.metrics.file")?.let { File(it) }
+
     val buildReportEnabled: Boolean
         get() = booleanProperty("kotlin.build.report.enable") ?: false
 
+    val buildReportMetrics: Boolean
+        get() = booleanProperty("kotlin.build.report.metrics") ?: false
+
     val buildReportVerbose: Boolean
         get() = booleanProperty("kotlin.build.report.verbose") ?: false
 

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/report/BuildDataRecorder.kt

@@ -0,0 +1,101 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.report
+
+import org.gradle.BuildAdapter
+import org.gradle.BuildResult
+import org.gradle.api.Task
+import org.gradle.api.execution.TaskExecutionListener
+import org.gradle.api.invocation.Gradle
+import org.gradle.api.tasks.TaskState
+import org.jetbrains.kotlin.build.report.metrics.BuildMetrics
+import org.jetbrains.kotlin.build.report.metrics.BuildTime
+import org.jetbrains.kotlin.gradle.internal.tasks.TaskWithLocalState
+import org.jetbrains.kotlin.gradle.plugin.internal.state.TaskExecutionResults
+import org.jetbrains.kotlin.gradle.report.data.BuildExecutionData
+import org.jetbrains.kotlin.gradle.report.data.BuildExecutionDataProcessor
+import org.jetbrains.kotlin.gradle.report.data.TaskExecutionData
+import java.util.*
+
+internal class BuildDataRecorder(
+    private val gradle: Gradle,
+    private val buildDataProcessors: Iterable<BuildExecutionDataProcessor>
+) : BuildAdapter(), TaskExecutionListener {
+    private val taskRecords = HashMap<Task, TaskRecord>()
+
+    @Synchronized
+    override fun beforeExecute(task: Task) {
+        val startNs = System.nanoTime()
+        taskRecords[task] = TaskRecord(task, startNs)
+    }
+
+    @Synchronized
+    override fun afterExecute(task: Task, state: TaskState) {
+        taskRecords[task]?.apply { processResult(state, TaskExecutionResults[task.path]) }
+    }
+
+    override fun buildFinished(result: BuildResult) {
+        val startParams = arrayListOf<String>()
+        gradle.startParameter.apply {
+            startParams.add("tasks = ${taskRequests.joinToString { it.args.toString() }}")
+            startParams.add("excluded tasks = $excludedTaskNames")
+            startParams.add("current dir = $currentDir")
+            startParams.add("project properties args = $projectProperties")
+            startParams.add("system properties args = $systemPropertiesArgs")
+        }
+        val buildData = BuildExecutionData(
+            startParameters = startParams,
+            failure = result.failure,
+            taskExecutionData = taskRecords.values.sortedBy { it.startNs }
+        )
+
+        buildDataProcessors.forEach { it.process(buildData) }
+    }
+}
+
+private class TaskRecord(
+    override val task: Task,
+    override val startNs: Long
+) : TaskExecutionData {
+    private var myEndNs: Long = 0
+    private lateinit var myTaskState: TaskState
+    private var myIcLogLines: List<String> = emptyList()
+    private val myBuildMetrics = BuildMetrics()
+
+    override val isKotlinTask by lazy {
+        task.javaClass.name.startsWith("org.jetbrains.kotlin")
+    }
+
+    override val endNs: Long
+        get() = myEndNs
+
+    override val totalTimeNs: Long
+        get() = endNs - startNs
+
+    override val resultState: TaskState
+        get() = myTaskState
+
+    override val icLogLines: List<String>
+        get() = myIcLogLines
+
+    override val buildMetrics: BuildMetrics
+        get() = myBuildMetrics
+
+    fun processResult(state: TaskState, executionResult: TaskExecutionResult?) {
+        myEndNs = System.nanoTime()
+        myTaskState = state
+        myBuildMetrics.buildTimes.add(BuildTime.GRADLE_TASK, totalTimeNs)
+
+        if (executionResult != null) {
+            myBuildMetrics.addAll(executionResult.buildMetrics)
+            myIcLogLines = executionResult.icLogLines
+        }
+
+        if (task is TaskWithLocalState) {
+            myBuildMetrics.addAll(task.metrics.getMetrics())
+        }
+    }
+}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/report/BuildReportMode.kt

@@ -5,7 +5,14 @@
 
 package org.jetbrains.kotlin.gradle.report
 
-enum class BuildReportMode {
+import java.io.Serializable
+
+enum class BuildReportMode : Serializable {
+    NONE,
     SIMPLE,
-    VERBOSE
-}
+    VERBOSE;
+
+    companion object {
+        const val serialVersionUID: Long = 0
+    }
+}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/report/KotlinBuildReporter.kt

@@ -1,120 +0,0 @@
-/*
- * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package org.jetbrains.kotlin.gradle.report
-
-import org.gradle.BuildAdapter
-import org.gradle.BuildResult
-import org.gradle.api.Task
-import org.gradle.api.execution.TaskExecutionListener
-import org.gradle.api.invocation.Gradle
-import org.gradle.api.logging.Logger
-import org.gradle.api.tasks.TaskState
-import org.jetbrains.kotlin.gradle.logging.kotlinDebug
-import org.jetbrains.kotlin.gradle.plugin.PropertiesProvider
-import org.jetbrains.kotlin.gradle.plugin.internal.state.TaskExecutionResults
-import org.jetbrains.kotlin.gradle.tasks.AbstractKotlinCompile
-import org.jetbrains.kotlin.gradle.utils.isConfigurationCacheAvailable
-import java.io.File
-import java.text.SimpleDateFormat
-import java.util.*
-
-internal fun configureBuildReporter(gradle: Gradle, log: Logger) {
-    val rootProject = gradle.rootProject
-    val properties = PropertiesProvider(rootProject)
-
-    if (!properties.buildReportEnabled) return
-
-    val perfLogDir = properties.buildReportDir
-        ?: rootProject.buildDir.resolve("reports/kotlin-build").apply { mkdirs() }
-
-    if (perfLogDir.isFile) {
-        log.error("Kotlin build report cannot be created: '$perfLogDir' is a file")
-        return
-    }
-
-    perfLogDir.mkdirs()
-    val ts = SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(Calendar.getInstance().time)
-
-    val perfReportFile = perfLogDir.resolve("${gradle.rootProject.name}-build-$ts.txt")
-
-    if (!isConfigurationCacheAvailable(gradle)) {
-        val reporter = KotlinBuildReporter(gradle, perfReportFile)
-        gradle.addBuildListener(reporter)
-    }
-
-    val buildReportMode = if (properties.buildReportVerbose) BuildReportMode.VERBOSE else BuildReportMode.SIMPLE
-
-    gradle.taskGraph.whenReady { graph ->
-        graph.allTasks.asSequence()
-            .filterIsInstance<AbstractKotlinCompile<*>>()
-            .forEach { it.buildReportMode = buildReportMode }
-    }
-
-    log.kotlinDebug { "Configured Kotlin build reporter" }
-}
-
-internal class KotlinBuildReporter(
-    private val gradle: Gradle,
-    private val perfReportFile: File
-) : BuildAdapter(), TaskExecutionListener {
-    init {
-        val dir = perfReportFile.parentFile
-        check(dir.isDirectory) { "$dir does not exist or is a file" }
-        check(!perfReportFile.isFile) { "Build report log file $perfReportFile exists already" }
-    }
-
-    private val taskStartNs = HashMap<Task, Long>()
-    private val kotlinTaskTimeNs = HashMap<Task, Long>()
-    private val tasksSb = StringBuilder()
-
-    @Volatile
-    private var allTasksTimeNs: Long = 0L
-
-    @Synchronized
-    override fun beforeExecute(task: Task) {
-        taskStartNs[task] = System.nanoTime()
-    }
-
-    @Synchronized
-    override fun afterExecute(task: Task, state: TaskState) {
-        val startNs = taskStartNs[task] ?: return
-
-        val endNs = System.nanoTime()
-        val timeNs = endNs - startNs
-        allTasksTimeNs += timeNs
-
-        if (!task.javaClass.name.startsWith("org.jetbrains.kotlin")) {
-            return
-        }
-
-        kotlinTaskTimeNs[task] = timeNs
-        tasksSb.appendln()
-
-        val skipMessage = state.skipMessage
-        if (skipMessage != null) {
-            tasksSb.appendln("$task was skipped: $skipMessage")
-        } else {
-            tasksSb.appendln("$task finished in ${formatTime(timeNs)}")
-        }
-
-        val path = task.path
-        val executionResult = TaskExecutionResults[path]
-        if (executionResult != null) {
-            tasksSb.appendln("Execution strategy: ${executionResult.executionStrategy}")
-
-            executionResult.icLogLines?.let { lines ->
-                tasksSb.appendln("Compilation log for $task:")
-                lines.forEach { tasksSb.appendln("  $it") }
-            }
-        }
-    }
-
-    @Synchronized
-    override fun buildFinished(result: BuildResult) {
-        KotlinBuildReporterHandler().buildFinished(gradle, perfReportFile, kotlinTaskTimeNs.mapKeys{it.key.path}, allTasksTimeNs, result.failure)
-    }
-}
-

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/report/KotlinBuildReporterListener.kt

@@ -5,7 +5,6 @@
 
 package org.jetbrains.kotlin.gradle.report
 
-import com.intellij.util.text.DateFormatUtil.formatTime
 import org.gradle.api.invocation.Gradle
 import org.gradle.tooling.events.FinishEvent
 import org.gradle.tooling.events.OperationCompletionListener

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/report/MetricsWriter.kt

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.report
+
+import org.gradle.api.logging.Logger
+import org.jetbrains.kotlin.build.report.metrics.BuildAttribute
+import org.jetbrains.kotlin.build.report.metrics.BuildTime
+import org.jetbrains.kotlin.gradle.internal.build.metrics.GradleBuildMetricsData
+import org.jetbrains.kotlin.gradle.internal.build.metrics.TaskData
+import org.jetbrains.kotlin.gradle.logging.kotlinDebug
+import org.jetbrains.kotlin.gradle.report.data.BuildExecutionData
+import org.jetbrains.kotlin.gradle.report.data.BuildExecutionDataProcessor
+import java.io.File
+import java.io.ObjectOutputStream
+
+internal class MetricsWriter(
+    private val outputFile: File,
+    private val log: Logger
+) : BuildExecutionDataProcessor {
+    override fun process(build: BuildExecutionData) {
+        if (build.failure != null) return
+
+        try {
+            outputFile.parentFile?.apply { mkdirs() }
+
+            val buildMetricsData = GradleBuildMetricsData()
+            for (metric in BuildTime.values()) {
+                buildMetricsData.parentMetric[metric.name] = metric.parent?.name
+            }
+            for (attr in BuildAttribute.values()) {
+                buildMetricsData.buildAttributeKind[attr.name] = attr.kind.name
+            }
+
+            for (data in build.taskExecutionData) {
+                val path = data.task.path
+                val type = data.task::class.java.canonicalName
+                val buildTimes = data.buildMetrics.buildTimes.asMap().mapKeys { (k, _) -> k.name }
+                val buildAttributes = data.buildMetrics.buildAttributes.asMap().mapKeys { (k, _) -> k.name }
+                buildMetricsData.taskData[path] =
+                    TaskData(
+                        path = path,
+                        typeFqName = type,
+                        timeMetrics = buildTimes,
+                        buildAttributes = buildAttributes,
+                        didWork = data.task.didWork
+                    )
+            }
+
+            ObjectOutputStream(outputFile.outputStream().buffered()).use { out ->
+                out.writeObject(buildMetricsData)
+            }
+        } catch (e: Exception) {
+            log.kotlinDebug { "Could not write metrics to $outputFile: $e" }
+        }
+    }
+}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/report/PlainTextBuildReportWriter.kt

@@ -0,0 +1,206 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.report
+
+import org.gradle.api.logging.Logger
+import org.jetbrains.kotlin.build.report.metrics.BuildAttributes
+import org.jetbrains.kotlin.build.report.metrics.BuildMetrics
+import org.jetbrains.kotlin.build.report.metrics.BuildTime
+import org.jetbrains.kotlin.build.report.metrics.BuildTimes
+import org.jetbrains.kotlin.gradle.report.data.BuildExecutionData
+import org.jetbrains.kotlin.gradle.report.data.BuildExecutionDataProcessor
+import org.jetbrains.kotlin.gradle.report.data.TaskExecutionData
+import org.jetbrains.kotlin.gradle.utils.Printer
+import java.io.File
+import java.util.*
+import kotlin.math.max
+
+internal class PlainTextBuildReportWriter(
+    private val outputFile: File,
+    private val printMetrics: Boolean,
+    private val log: Logger
+) : BuildExecutionDataProcessor {
+
+    private lateinit var p: Printer
+
+    override fun process(build: BuildExecutionData) {
+        try {
+            outputFile.bufferedWriter().use { writer ->
+                p = Printer(writer)
+                printBuildReport(build)
+            }
+
+            log.lifecycle("Kotlin build report is written to ${outputFile.canonicalPath}")
+        } catch (e: Exception) {
+            log.error("Could not write Kotlin build report to ${outputFile.canonicalPath}", e)
+        }
+    }
+
+    private fun printBuildReport(build: BuildExecutionData) {
+        printBuildInfo(build)
+        printMetrics(build.aggregatedMetrics)
+        printTaskOverview(build)
+        printTasksLog(build)
+    }
+
+    private fun printBuildInfo(build: BuildExecutionData) {
+        p.withIndent("Gradle start parameters:") {
+            build.startParameters.forEach { p.println(it) }
+        }
+
+        p.println()
+        if (build.failure != null) {
+            p.println("Build failed: ${build.failure}")
+        }
+        p.println()
+    }
+
+    private fun printMetrics(buildMetrics: BuildMetrics) {
+        if (!printMetrics) return
+
+        printBuildTimes(buildMetrics.buildTimes)
+        printBuildAttributes(buildMetrics.buildAttributes)
+    }
+
+    private fun printBuildTimes(buildTimes: BuildTimes) {
+        val collectedBuildTimes = buildTimes.asMap()
+
+        if (collectedBuildTimes.isEmpty()) return
+
+        p.println("Time metrics:")
+        p.withIndent {
+            val visitedBuildTimes = HashSet<BuildTime>()
+            fun printBuildTime(buildTime: BuildTime) {
+                if (!visitedBuildTimes.add(buildTime)) return
+
+                val timeNs = collectedBuildTimes[buildTime] ?: return
+                p.println("${buildTime.name}: ${formatTime(timeNs)}")
+                p.withIndent {
+                    BuildTime.children[buildTime]?.forEach { printBuildTime(it) }
+                }
+            }
+
+            for (buildTime in BuildTime.values()) {
+                if (buildTime.parent != null) continue
+
+                printBuildTime(buildTime)
+            }
+        }
+        p.println()
+    }
+
+    private fun printBuildAttributes(buildAttributes: BuildAttributes) {
+        val allAttributes = buildAttributes.asMap()
+        if (allAttributes.isEmpty()) return
+
+        p.withIndent("Build attributes:") {
+            val attributesByKind = allAttributes.entries.groupBy { it.key.kind }.toSortedMap()
+            for ((kind, attributesCounts) in attributesByKind) {
+                printMap(p, kind.name, attributesCounts.map { (k, v) -> k.name to v }.toMap())
+            }
+        }
+        p.println()
+    }
+
+    private fun printTaskOverview(build: BuildExecutionData) {
+        var allTasksTimeNs = 0L
+        var kotlinTotalTimeNs = 0L
+        val kotlinTasks = ArrayList<TaskExecutionData>()
+
+        for (task in build.taskExecutionData) {
+            val taskTimeNs = task.totalTimeNs
+            allTasksTimeNs += taskTimeNs
+
+            if (task.isKotlinTask) {
+                kotlinTotalTimeNs += taskTimeNs
+                kotlinTasks.add(task)
+            }
+        }
+
+        if (kotlinTasks.isEmpty()) {
+            p.println("No Kotlin task was run")
+            return
+        }
+
+        val ktTaskPercent = (kotlinTotalTimeNs.toDouble() / allTasksTimeNs * 100).asString(1)
+        p.println("Total time for Kotlin tasks: ${formatTime(kotlinTotalTimeNs)} ($ktTaskPercent % of all tasks time)")
+
+        val table = TextTable("Time", "% of Kotlin time", "Task")
+        for (task in kotlinTasks.sortedByDescending { it.totalTimeNs }) {
+            val timeNs = task.totalTimeNs
+            val percent = (timeNs.toDouble() / kotlinTotalTimeNs * 100).asString(1)
+            table.addRow(formatTime(timeNs), "$percent %", task.task.path)
+        }
+        table.printTo(p)
+        p.println()
+    }
+
+    private fun printTasksLog(build: BuildExecutionData) {
+        for (task in build.taskExecutionData) {
+            printTaskLog(task)
+            p.println()
+        }
+    }
+
+    private fun printTaskLog(task: TaskExecutionData) {
+        val skipMessage = task.resultState.skipMessage
+        if (skipMessage != null) {
+            p.println("$task was skipped: $skipMessage")
+        } else {
+            p.println("$task finished in ${formatTime(task.totalTimeNs)}")
+        }
+
+        if (task.icLogLines.isNotEmpty()) {
+            p.withIndent("Compilation log for $task:") {
+                task.icLogLines.forEach { p.println(it) }
+            }
+        }
+
+        printMetrics(task.buildMetrics)
+    }
+}
+
+private fun printMap(p: Printer, name: String, mapping: Map<String, Int>) {
+    if (mapping.isEmpty()) return
+
+    if (mapping.size == 1) {
+        p.println("$name: ${mapping.keys.single()}")
+        return
+    }
+
+    p.withIndent("$name:") {
+        val sortedEnumMap = mapping.toSortedMap()
+        for ((k, v) in sortedEnumMap) {
+            p.println("$k($v)")
+        }
+    }
+}
+
+private class TextTable(vararg columnNames: String) {
+    private val rows = ArrayList<List<String>>()
+    private val columnsCount = columnNames.size
+    private val maxLengths = IntArray(columnsCount) { columnNames[it].length }
+
+    init {
+        rows.add(columnNames.toList())
+    }
+
+    fun addRow(vararg row: String) {
+        check(row.size == columnsCount) { "Row size ${row.size} differs from columns count $columnsCount" }
+        rows.add(row.toList())
+
+        for ((i, col) in row.withIndex()) {
+            maxLengths[i] = max(maxLengths[i], col.length)
+        }
+    }
+
+    fun printTo(p: Printer) {
+        for (row in rows) {
+            val rowStr = row.withIndex().joinToString("|") { (i, col) -> col.padEnd(maxLengths[i], ' ') }
+            p.println(rowStr)
+        }
+    }
+}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/report/ReportingSettings.kt

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.report
+
+import java.io.File
+import java.io.Serializable
+
+data class ReportingSettings(
+    val metricsOutputFile: File? = null,
+    val buildReportDir: File? = null,
+    val reportMetrics: Boolean = false,
+    val includeMetricsInReport: Boolean = false,
+    val buildReportMode: BuildReportMode = BuildReportMode.NONE
+) : Serializable {
+    companion object {
+        const val serialVersionUID: Long = 0
+    }
+}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/report/TaskExecutionResult.kt

@@ -5,7 +5,9 @@
 
 package org.jetbrains.kotlin.gradle.report
 
+import org.jetbrains.kotlin.build.report.metrics.BuildMetrics
+
 internal class TaskExecutionResult(
-    val executionStrategy: String,
-    val icLogLines: List<String>?
+    val buildMetrics: BuildMetrics,
+    val icLogLines: List<String> = emptyList()
 )

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/report/configureReporing.kt

@@ -0,0 +1,83 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.report
+
+import org.gradle.api.Project
+import org.gradle.api.invocation.Gradle
+import org.jetbrains.kotlin.gradle.plugin.PropertiesProvider
+import org.jetbrains.kotlin.gradle.report.data.BuildExecutionDataProcessor
+import org.jetbrains.kotlin.gradle.tasks.AbstractKotlinCompile
+import org.jetbrains.kotlin.gradle.utils.isConfigurationCacheAvailable
+import java.text.SimpleDateFormat
+import java.util.*
+
+internal fun configureReporting(gradle: Gradle) {
+    val buildDataProcessors = ArrayList<BuildExecutionDataProcessor>()
+
+    val rootProject = gradle.rootProject
+    val reportingSettings = reportingSettings(rootProject)
+    gradle.taskGraph.whenReady { graph ->
+        graph.allTasks.asSequence()
+            .filterIsInstance<AbstractKotlinCompile<*>>()
+            .forEach { it.reportingSettings = reportingSettings }
+    }
+
+    if (reportingSettings.buildReportMode != BuildReportMode.NONE && reportingSettings.buildReportDir != null) {
+        configurePlainTextReportWriter(gradle, reportingSettings)?.let {
+            buildDataProcessors.add(it)
+        }
+    }
+
+    if (reportingSettings.metricsOutputFile != null) {
+        buildDataProcessors.add(MetricsWriter(reportingSettings.metricsOutputFile.absoluteFile, rootProject.logger))
+    }
+
+    if (buildDataProcessors.isNotEmpty() && !isConfigurationCacheAvailable(gradle)) {
+        val listener = BuildDataRecorder(gradle, buildDataProcessors)
+        gradle.addBuildListener(listener)
+    }
+}
+
+private fun reportingSettings(rootProject: Project): ReportingSettings {
+    val properties = PropertiesProvider(rootProject)
+    val buildReportMode =
+        when {
+            !properties.buildReportEnabled -> BuildReportMode.NONE
+            properties.buildReportVerbose -> BuildReportMode.VERBOSE
+            else -> BuildReportMode.SIMPLE
+        }
+    val metricsOutputFile = properties.singleBuildMetricsFile
+    val buildReportDir = properties.buildReportDir ?: rootProject.buildDir.resolve("reports/kotlin-build")
+    val includeMetricsInReport = properties.buildReportMetrics || buildReportMode == BuildReportMode.VERBOSE
+    return ReportingSettings(
+        metricsOutputFile = metricsOutputFile,
+        buildReportDir = buildReportDir,
+        reportMetrics = metricsOutputFile != null || includeMetricsInReport,
+        includeMetricsInReport = includeMetricsInReport,
+        buildReportMode = buildReportMode
+    )
+}
+
+private fun configurePlainTextReportWriter(
+    gradle: Gradle,
+    reportingSettings: ReportingSettings
+): BuildExecutionDataProcessor? {
+    val log = gradle.rootProject.logger
+    val reportDir = reportingSettings.buildReportDir!!.apply { mkdirs() }
+    if (reportDir.isFile) {
+        log.error("Kotlin build report cannot be created: '$reportDir' is a file")
+        return null
+    }
+    reportDir.mkdirs()
+    val ts = SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(Calendar.getInstance().time)
+    val reportFile = reportDir.resolve("${gradle.rootProject.name}-build-$ts.txt")
+
+    return PlainTextBuildReportWriter(
+        outputFile = reportFile,
+        printMetrics = reportingSettings.includeMetricsInReport,
+        log = log
+    )
+}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/report/data/BuildExecutionData.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.report.data
+
+import org.jetbrains.kotlin.build.report.metrics.BuildMetrics
+
+internal class BuildExecutionData(
+    val startParameters: Collection<String>,
+    val failure: Throwable?,
+    val taskExecutionData: Collection<TaskExecutionData>
+) {
+    val aggregatedMetrics by lazy {
+        BuildMetrics().also { acc ->
+            taskExecutionData.forEach { acc.addAll(it.buildMetrics) }
+        }
+    }
+}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/report/data/BuildExecutionDataProcessor.kt

@@ -0,0 +1,10 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.report.data
+
+internal interface BuildExecutionDataProcessor {
+    fun process(build: BuildExecutionData)
+}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/report/data/TaskExecutionData.kt

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.report.data
+
+import org.gradle.api.Task
+import org.gradle.api.tasks.TaskState
+import org.jetbrains.kotlin.build.report.metrics.BuildMetrics
+
+internal interface TaskExecutionData {
+    val task: Task
+    val startNs: Long
+    val endNs: Long
+    val totalTimeNs: Long
+    val resultState: TaskState
+    val icLogLines: List<String>
+    val buildMetrics: BuildMetrics
+    val isKotlinTask: Boolean
+}
+

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/KotlinCompileCommon.kt

@@ -99,7 +99,7 @@ open class KotlinCompileCommon : AbstractKotlinCompile<K2MetadataCompilerArgumen
         val compilerRunner = compilerRunner
         val environment = GradleCompilerEnvironment(
             computedCompilerClasspath, messageCollector, outputItemCollector,
-            buildReportMode = buildReportMode,
+            reportingSettings = reportingSettings,
             outputFiles = allOutputFiles()
         )
         compilerRunner.runMetadataCompilerAsync(sourceRoots.kotlinSourceFiles, args, environment)

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/Tasks.kt

@@ -16,6 +16,10 @@ import org.gradle.api.tasks.compile.JavaCompile
 import org.gradle.api.tasks.incremental.IncrementalTaskInputs
 import org.gradle.workers.WorkerExecutor
 import org.jetbrains.kotlin.build.DEFAULT_KOTLIN_SOURCE_FILES_EXTENSIONS
+import org.jetbrains.kotlin.build.report.metrics.BuildMetricsReporter
+import org.jetbrains.kotlin.build.report.metrics.BuildMetricsReporterImpl
+import org.jetbrains.kotlin.build.report.metrics.BuildTime
+import org.jetbrains.kotlin.build.report.metrics.measure
 import org.jetbrains.kotlin.cli.common.arguments.CommonCompilerArguments
 import org.jetbrains.kotlin.cli.common.arguments.CommonToolArguments
 import org.jetbrains.kotlin.cli.common.arguments.K2JSCompilerArguments
@@ -38,7 +42,7 @@ import org.jetbrains.kotlin.gradle.plugin.PLUGIN_CLASSPATH_CONFIGURATION_NAME
 import org.jetbrains.kotlin.gradle.plugin.mpp.AbstractKotlinCompilation
 import org.jetbrains.kotlin.gradle.plugin.mpp.associateWithTransitiveClosure
 import org.jetbrains.kotlin.gradle.plugin.mpp.ownModuleName
-import org.jetbrains.kotlin.gradle.report.BuildReportMode
+import org.jetbrains.kotlin.gradle.report.ReportingSettings
 import org.jetbrains.kotlin.gradle.utils.*
 import org.jetbrains.kotlin.gradle.utils.isParentOf
 import org.jetbrains.kotlin.gradle.utils.pathsAsStringRelativeTo
@@ -92,6 +96,10 @@ abstract class AbstractKotlinCompileTool<T : CommonToolArguments>
     @get:Input
     internal var useFallbackCompilerSearch: Boolean = false
 
+    @get:Internal
+    override val metrics: BuildMetricsReporter =
+        BuildMetricsReporterImpl()
+
     @get:Classpath
     @get:InputFiles
     internal val computedCompilerClasspath: List<File> by lazy {
@@ -195,7 +203,7 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments>() : AbstractKo
         incremental
 
     @get:Internal
-    internal var buildReportMode: BuildReportMode? = null
+    internal var reportingSettings = ReportingSettings()
 
     @get:Internal
     internal val taskData: KotlinCompileTaskData = KotlinCompileTaskData.get(project, name)
@@ -327,7 +335,7 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments>() : AbstractKo
         // To prevent this, we backup outputs before incremental build and restore when exception is thrown
         val outputsBackup: TaskOutputsBackup? =
             if (isIncrementalCompilationEnabled() && inputs.isIncremental)
-                kotlinLogger.logTime("Backing up outputs for incremental build") {
+                metrics.measure(BuildTime.BACKUP_OUTPUT) {
                     TaskOutputsBackup(allOutputFiles())
                 }
             else null
@@ -342,7 +350,7 @@ abstract class AbstractKotlinCompile<T : CommonCompilerArguments>() : AbstractKo
             executeImpl(inputs)
         } catch (t: Throwable) {
             if (outputsBackup != null) {
-                kotlinLogger.logTime("Restoring previous outputs on error") {
+                metrics.measure(BuildTime.RESTORE_OUTPUT_FROM_BACKUP) {
                     outputsBackup.restoreOutputs()
                 }
             }
@@ -525,7 +533,7 @@ open class KotlinCompile : AbstractKotlinCompile<K2JVMCompilerArguments>(), Kotl
         val environment = GradleCompilerEnvironment(
             computedCompilerClasspath, messageCollector, outputItemCollector,
             outputFiles = allOutputFiles(),
-            buildReportMode = buildReportMode,
+            reportingSettings = reportingSettings,
             incrementalCompilationEnvironment = icEnv,
             kotlinScriptExtensions = sourceFilesExtensions.toTypedArray()
         )
@@ -752,7 +760,7 @@ open class Kotlin2JsCompile : AbstractKotlinCompile<K2JSCompilerArguments>(), Ko
         val environment = GradleCompilerEnvironment(
             computedCompilerClasspath, messageCollector, outputItemCollector,
             outputFiles = allOutputFiles(),
-            buildReportMode = buildReportMode,
+            reportingSettings = reportingSettings,
             incrementalCompilationEnvironment = icEnv
         )
         compilerRunner.runJsCompilerAsync(sourceRoots.kotlinSourceFiles, commonSourceSet.toList(), args, environment)

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/tasksUtils.kt

@@ -1,6 +1,9 @@
 package org.jetbrains.kotlin.gradle.tasks
 
 import org.gradle.api.GradleException
+import org.jetbrains.kotlin.build.report.metrics.BuildMetricsReporter
+import org.jetbrains.kotlin.build.report.metrics.BuildTime
+import org.jetbrains.kotlin.build.report.metrics.measure
 import org.jetbrains.kotlin.cli.common.ExitCode
 import org.jetbrains.kotlin.compilerRunner.KotlinLogger
 import org.jetbrains.kotlin.gradle.logging.GradleKotlinLogger
@@ -22,26 +25,33 @@ fun throwGradleExceptionIfError(exitCode: ExitCode) {
 
 internal fun TaskWithLocalState.clearLocalState(reason: String? = null) {
     val log = GradleKotlinLogger(logger)
-    clearLocalState(allOutputFiles(), log, reason)
+    clearLocalState(allOutputFiles(), log, metrics, reason)
 }
 
-internal fun clearLocalState(outputFiles: Iterable<File>, log: KotlinLogger, reason: String? = null) {
+internal fun clearLocalState(
+    outputFiles: Iterable<File>,
+    log: KotlinLogger,
+    metrics: BuildMetricsReporter,
+    reason: String? = null
+) {
     log.kotlinDebug {
         val suffix = reason?.let { " ($it)" }.orEmpty()
         "Clearing output$suffix:"
     }
 
-    for (file in outputFiles) {
-        if (!file.exists()) continue
-        when {
-            file.isDirectory -> {
-                log.debug("Deleting output directory: $file")
-                file.deleteRecursively()
-                file.mkdirs()
-            }
-            file.isFile -> {
-                log.debug("Deleting output file: $file")
-                file.delete()
+    metrics.measure(BuildTime.CLEAR_OUTPUT) {
+        for (file in outputFiles) {
+            if (!file.exists()) continue
+            when {
+                file.isDirectory -> {
+                    log.debug("Deleting output directory: $file")
+                    file.deleteRecursively()
+                    file.mkdirs()
+                }
+                file.isFile -> {
+                    log.debug("Deleting output file: $file")
+                    file.delete()
+                }
             }
         }
     }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/utils/Printer.kt

@@ -0,0 +1,81 @@
+/*
+ * Copyright 2010-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jetbrains.kotlin.gradle.utils
+
+import java.io.IOException
+
+private val LINE_SEPARATOR = System.getProperty("line.separator")
+
+internal class Printer(
+    private val out: Appendable,
+    private val indentUnit: String = "  ",
+    private var indent: String = ""
+) {
+    private fun append(s: String) {
+        try {
+            out.append(s)
+        } catch (e: IOException) { // Do nothing
+        }
+    }
+
+    fun println(vararg strings: String) {
+        this.print(*strings)
+        printLineSeparator()
+    }
+
+    private fun printLineSeparator() {
+        append(LINE_SEPARATOR)
+    }
+
+    fun print(vararg strings: String) {
+        if (strings.isNotEmpty()) {
+            this.printIndent()
+        }
+        this.printWithNoIndent(*strings)
+    }
+
+    private fun printIndent() {
+        append(indent)
+    }
+
+    private fun printWithNoIndent(vararg strings: String) {
+        for (s in strings) {
+            append(s)
+        }
+    }
+
+    fun pushIndent() {
+        indent += indentUnit
+    }
+
+    fun popIndent() {
+        check(indent.length >= indentUnit.length) { "No indentation to pop" }
+        indent = indent.substring(indentUnit.length)
+    }
+
+    inline fun <T> withIndent(headLine: String? = null, fn: () -> T): T {
+        if (headLine != null) {
+            this.println(headLine)
+        }
+        pushIndent()
+
+        return try {
+            fn()
+        } finally {
+            popIndent()
+        }
+    }
+}

libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/incremental/MavenICReporter.java

@@ -20,7 +20,7 @@ import kotlin.jvm.functions.Function0;
 import org.apache.maven.plugin.logging.Log;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.kotlin.cli.common.ExitCode;
-import org.jetbrains.kotlin.incremental.ICReporterBase;
+import org.jetbrains.kotlin.build.report.ICReporterBase;
 
 import java.io.File;
 import java.util.Collection;

settings.gradle

@@ -241,6 +241,7 @@ include ":benchmarks",
         ":kotlin-gradle-plugin-dsl-codegen",
         ":kotlin-gradle-plugin-npm-versions-codegen",
         ":kotlin-gradle-statistics",
+        ":kotlin-gradle-build-metrics",
         ":kotlin-gradle-plugin",
         ":kotlin-gradle-plugin-model",
         ":kotlin-gradle-plugin-test-utils-embeddable",
@@ -500,6 +501,7 @@ project(':kotlin-gradle-plugin-api').projectDir = "$rootDir/libraries/tools/kotl
 project(':kotlin-gradle-plugin-dsl-codegen').projectDir = "$rootDir/libraries/tools/kotlin-gradle-plugin-dsl-codegen" as File
 project(':kotlin-gradle-plugin-npm-versions-codegen').projectDir = "$rootDir/libraries/tools/kotlin-gradle-plugin-npm-versions-codegen" as File
 project(':kotlin-gradle-statistics').projectDir = "$rootDir/libraries/tools/kotlin-gradle-statistics" as File
+project(':kotlin-gradle-build-metrics').projectDir = "$rootDir/libraries/tools/kotlin-gradle-build-metrics" as File
 project(':kotlin-gradle-plugin').projectDir = "$rootDir/libraries/tools/kotlin-gradle-plugin" as File
 project(':kotlin-gradle-plugin-model').projectDir = "$rootDir/libraries/tools/kotlin-gradle-plugin-model" as File
 project(':kotlin-gradle-plugin-test-utils-embeddable').projectDir = "$rootDir/libraries/tools/kotlin-gradle-plugin-test-utils-embeddable" as File