Implement server side IC

compiler/compiler-runner/src/org/jetbrains/kotlin/compilerRunner/KotlinCompilerRunner.kt

@@ -93,7 +93,7 @@ abstract class KotlinCompilerRunner<in Env : CompilerEnvironment> {
     protected fun processCompilerOutput(
             environment: Env,
             stream: ByteArrayOutputStream,
-            exitCode: ExitCode
+            exitCode: ExitCode?
     ) {
         val reader = BufferedReader(StringReader(stream.toString()))
         CompilerOutputParser.parseCompilerMessagesFromReader(environment.messageCollector, reader, environment.outputItemsCollector)
@@ -194,12 +194,12 @@ abstract class KotlinCompilerRunner<in Env : CompilerEnvironment> {
         return null
     }
 
-    protected fun exitCodeFromProcessExitCode(res: Int): ExitCode =
-            if (res == 0) {
-                ExitCode.OK
-            }
-            else {
-                ExitCode.COMPILATION_ERROR
-            }
+    protected fun exitCodeFromProcessExitCode(code: Int): ExitCode {
+        val exitCode = ExitCode.values().find { it.code == code }
+        if (exitCode != null) return exitCode
+
+        log.debug("Could not find exit code by value: $code")
+        return if (code == 0) ExitCode.OK else ExitCode.COMPILATION_ERROR
+    }
 }
 

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

@@ -125,6 +125,16 @@ interface CompileService : Remote {
             operationsTracer: RemoteOperationsTracer?
     ): CallResult<Int>
 
+    @Throws(RemoteException::class)
+    fun serverSideJvmIC(
+            sessionId: Int,
+            args: Array<out String>,
+            servicesFacade: IncrementalCompilationServicesFacade,
+            compilerOutputStream: RemoteOutputStream,
+            serviceOutputStream: RemoteOutputStream,
+            operationsTracer: RemoteOperationsTracer?
+    ): CallResult<Int>
+
     @Throws(RemoteException::class)
     fun leaseReplSession(
             aliveFlagPath: String?,

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

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2010-2016 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.daemon.common
+
+import java.io.File
+import java.rmi.Remote
+import java.rmi.RemoteException
+
+interface IncrementalCompilationServicesFacade : Remote {
+    @Throws(RemoteException::class)
+    fun areFileChangesKnown(): Boolean
+
+    @Throws(RemoteException::class)
+    fun modifiedFiles(): List<File>?
+
+    @Throws(RemoteException::class)
+    fun deletedFiles(): List<File>?
+
+    @Throws(RemoteException::class)
+    fun workingDir(): File
+
+    // ICReporter
+
+    @Throws(RemoteException::class)
+    fun shouldReportIC(): Boolean
+
+    @Throws(RemoteException::class)
+    fun reportIC(message: String)
+
+    @Throws(RemoteException::class)
+    fun reportCompileIteration(files: Iterable<File>, exitCode: Int)
+
+    // AnnotationFileUpdater
+    @Throws(RemoteException::class)
+    fun hasAnnotationsFileUpdater(): Boolean
+
+    @Throws(RemoteException::class)
+    fun updateAnnotations(outdatedClassesJvmNames: Iterable<String>)
+
+    @Throws(RemoteException::class)
+    fun revert()
+}

compiler/daemon/daemon.iml

@@ -12,5 +12,8 @@
     <orderEntry type="module" module-name="util" />
     <orderEntry type="library" name="intellij-core" level="project" />
     <orderEntry type="module" module-name="frontend" />
+    <orderEntry type="module" module-name="incremental-compilation-impl" />
+    <orderEntry type="module" module-name="build-common" />
+    <orderEntry type="module" module-name="descriptor.loader.java" />
   </component>
 </module>

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

@@ -20,20 +20,31 @@ import com.intellij.openapi.Disposable
 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.annotation.AnnotationFileUpdater
 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
+import org.jetbrains.kotlin.cli.common.arguments.K2JVMCompilerArguments
+import org.jetbrains.kotlin.cli.common.messages.*
+import org.jetbrains.kotlin.cli.common.modules.ModuleXmlParser
 import org.jetbrains.kotlin.cli.common.repl.ReplCheckResult
 import org.jetbrains.kotlin.cli.common.repl.ReplCodeLine
 import org.jetbrains.kotlin.cli.common.repl.ReplCompileResult
 import org.jetbrains.kotlin.cli.common.repl.ReplEvalResult
+import org.jetbrains.kotlin.cli.jvm.K2JVMCompiler
 import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
+import org.jetbrains.kotlin.config.IncrementalCompilation
 import org.jetbrains.kotlin.config.Services
 import org.jetbrains.kotlin.daemon.common.*
+import org.jetbrains.kotlin.incremental.*
 import org.jetbrains.kotlin.load.kotlin.incremental.components.IncrementalCompilationComponents
+import org.jetbrains.kotlin.modules.Module
+import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.progress.CompilationCanceledStatus
+import org.jetbrains.kotlin.resolve.jvm.JvmClassName
 import org.jetbrains.kotlin.utils.addToStdlib.check
 import java.io.BufferedOutputStream
+import java.io.ByteArrayOutputStream
 import java.io.File
 import java.io.PrintStream
 import java.rmi.NoSuchObjectException
@@ -306,6 +317,58 @@ class CompileServiceImpl(
                 }
             }
 
+    override fun serverSideJvmIC(
+            sessionId: Int,
+            args: Array<out String>,
+            servicesFacade: IncrementalCompilationServicesFacade,
+            compilerOutputStream: RemoteOutputStream,
+            serviceOutputStream: RemoteOutputStream,
+            operationsTracer: RemoteOperationsTracer?
+    ): CompileService.CallResult<Int> {
+        return doCompile(sessionId, args, compilerOutputStream, serviceOutputStream, operationsTracer) { printStream, eventManager, profiler ->
+            val reporter = RemoteICReporter(servicesFacade)
+            val annotationFileUpdater = if (servicesFacade.hasAnnotationsFileUpdater()) RemoteAnnotationsFileUpdater(servicesFacade) else null
+
+            // these flags do not have any effect on the compiler (only on caches, incremental compilation logic, jps plugin)
+            // so it's OK to just set them true
+            IncrementalCompilation.setIsEnabled(true)
+            IncrementalCompilation.setIsExperimental(true)
+
+            val k2jvmArgs = K2JVMCompilerArguments()
+            (compiler[CompileService.TargetPlatform.JVM] as K2JVMCompiler).parseArguments(args, k2jvmArgs)
+
+            val moduleFile = k2jvmArgs.module?.let(::File)
+            assert(moduleFile?.exists() ?: false) { "Module does not exist ${k2jvmArgs.module}" }
+            val renderer = MessageRenderer.XML
+            val messageCollector = PrintingMessageCollector(printStream, renderer, k2jvmArgs.verbose)
+            val filteringMessageCollector = FilteringMessageCollector(messageCollector) { it == CompilerMessageSeverity.ERROR }
+
+            val parsedModule = ModuleXmlParser.parseModuleScript(k2jvmArgs.module, filteringMessageCollector)
+            val javaSourceRoots = parsedModule.modules.flatMapTo(HashSet()) { it.getJavaSourceRoots().map { File(it.path) } }
+            val allKotlinFiles = parsedModule.modules.flatMap { it.getSourceFiles().map(::File) }
+            k2jvmArgs.friendPaths = parsedModule.modules.flatMap(Module::getFriendPaths).toTypedArray()
+
+            val changedFiles = if (servicesFacade.areFileChangesKnown()) {
+                ChangedFiles.Known(servicesFacade.modifiedFiles()!!, servicesFacade.deletedFiles()!!)
+            }
+            else {
+                ChangedFiles.Unknown()
+            }
+
+            val workingDir = servicesFacade.workingDir()
+            val versions = commonCacheVersions(workingDir) + standaloneCacheVersion(workingDir, forceEnable = true)
+
+            try {
+                printStream.print(renderer.renderPreamble())
+                IncrementalJvmCompilerRunner(workingDir, javaSourceRoots, versions, reporter, annotationFileUpdater)
+                        .compile(allKotlinFiles, k2jvmArgs, messageCollector, { changedFiles })
+            }
+            finally {
+                printStream.print(renderer.renderConclusion())
+            }
+        }
+    }
+
     override fun leaseReplSession(
             aliveFlagPath: String?,
             targetPlatform: CompileService.TargetPlatform,

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

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2010-2016 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.daemon
+
+import org.jetbrains.kotlin.annotation.AnnotationFileUpdater
+import org.jetbrains.kotlin.cli.common.ExitCode
+import org.jetbrains.kotlin.daemon.common.IncrementalCompilationServicesFacade
+import org.jetbrains.kotlin.incremental.ICReporter
+import org.jetbrains.kotlin.resolve.jvm.JvmClassName
+import java.io.File
+
+internal class RemoteAnnotationsFileUpdater(private val servicesFacade: IncrementalCompilationServicesFacade) : AnnotationFileUpdater {
+    override fun updateAnnotations(outdatedClasses: Iterable<JvmClassName>) {
+        servicesFacade.updateAnnotations(outdatedClasses.map { it.internalName })
+    }
+
+    override fun revert() {
+        servicesFacade.revert()
+    }
+}

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

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2010-2016 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.daemon
+
+import org.jetbrains.kotlin.cli.common.ExitCode
+import org.jetbrains.kotlin.daemon.common.IncrementalCompilationServicesFacade
+import org.jetbrains.kotlin.incremental.ICReporter
+import java.io.File
+
+internal class RemoteICReporter(private val servicesFacade: IncrementalCompilationServicesFacade) : ICReporter() {
+    override fun report(message: () -> String) {
+        if (servicesFacade.shouldReportIC()) {
+            servicesFacade.reportIC(message())
+        }
+    }
+
+    override fun reportCompileIteration(sourceFiles: Iterable<File>, exitCode: ExitCode) {
+        if (servicesFacade.shouldReportIC()) {
+            servicesFacade.reportCompileIteration(sourceFiles, exitCode.code)
+        }
+    }
+}

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

@@ -49,10 +49,7 @@ fun makeIncrementally(
         messageCollector: MessageCollector = MessageCollector.NONE,
         reporter: ICReporter = EmptyICReporter
 ) {
-    val versions = listOf(normalCacheVersion(cachesDir),
-            experimentalCacheVersion(cachesDir),
-            dataContainerCacheVersion(cachesDir),
-            standaloneCacheVersion(cachesDir))
+    val versions = commonCacheVersions(cachesDir) + standaloneCacheVersion(cachesDir)
 
     val kotlinExtensions = listOf("kt", "kts")
     val allExtensions = kotlinExtensions + listOf("java")
@@ -313,9 +310,6 @@ class IncrementalJvmCompilerRunner(
             caches.incrementalCache.removeClassfilesBySources(dirtySources)
 
             val (sourcesToCompile, removedKotlinSources) = dirtySources.partition(File::exists)
-            if (sourcesToCompile.isNotEmpty()) {
-                reporter.report { "compile iteration: ${reporter.pathsAsString(sourcesToCompile)}" }
-            }
 
             // todo: more optimal to save only last iteration, but it will require adding standalone-ic specific logs
             // (because jps rebuilds all files from last build if it failed and gradle rebuilds everything)

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

@@ -22,10 +22,15 @@ import java.io.File
 internal const val STANDALONE_CACHE_VERSION = 0
 internal const val STANDALONE_VERSION_FILE_NAME = "standalone-ic-format-version.txt"
 
-internal fun standaloneCacheVersion(dataRoot: File): CacheVersion =
+fun standaloneCacheVersion(dataRoot: File, forceEnable: Boolean = false): CacheVersion =
         CacheVersion(ownVersion = STANDALONE_CACHE_VERSION,
                 versionFile = File(dataRoot, STANDALONE_VERSION_FILE_NAME),
                 whenVersionChanged = CacheVersion.Action.REBUILD_ALL_KOTLIN,
                 whenTurnedOn = CacheVersion.Action.REBUILD_ALL_KOTLIN,
                 whenTurnedOff = CacheVersion.Action.REBUILD_ALL_KOTLIN,
-                isEnabled = { IncrementalCompilation.isExperimental() })
+                isEnabled = { IncrementalCompilation.isExperimental() || forceEnable })
+
+fun commonCacheVersions(cachesDir: File): List<CacheVersion> =
+        listOf(normalCacheVersion(cachesDir),
+               experimentalCacheVersion(cachesDir),
+               dataContainerCacheVersion(cachesDir))

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

@@ -1,11 +1,14 @@
 package org.jetbrains.kotlin.compilerRunner
 
+import org.jetbrains.kotlin.annotation.AnnotationFileUpdater
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 import org.jetbrains.kotlin.config.Services
+import org.jetbrains.kotlin.incremental.ChangedFiles
+import org.jetbrains.kotlin.incremental.GradleICReporter
 import java.io.File
 import java.net.URL
 
-internal class GradleCompilerEnvironment(
+internal open class GradleCompilerEnvironment(
         val compilerJar: File,
         messageCollector: MessageCollector,
         outputItemsCollector: OutputItemsCollector
@@ -15,4 +18,14 @@ internal class GradleCompilerEnvironment(
 
     val compilerClasspathURLs: List<URL>
         get() = compilerClasspath.map { it.toURI().toURL() }
-}
+}
+
+internal class GradleIncrementalCompilerEnvironment(
+        compilerJar: File,
+        val changedFiles: ChangedFiles,
+        val reporter: GradleICReporter,
+        val workingDir: File,
+        messageCollector: MessageCollector,
+        outputItemsCollector: OutputItemsCollector,
+        val kaptAnnotationsFileUpdater: AnnotationFileUpdater?
+) : GradleCompilerEnvironment(compilerJar, messageCollector, outputItemsCollector)

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

@@ -22,16 +22,22 @@ import org.gradle.api.Project
 import org.jetbrains.kotlin.cli.common.ExitCode
 import org.jetbrains.kotlin.cli.common.arguments.K2JSCompilerArguments
 import org.jetbrains.kotlin.cli.common.arguments.K2JVMCompilerArguments
+import org.jetbrains.kotlin.cli.common.messages.CompilerMessageLocation
+import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 import org.jetbrains.kotlin.config.Services
+import org.jetbrains.kotlin.daemon.client.RemoteOutputStreamServer
+import org.jetbrains.kotlin.daemon.common.IncrementalCompilationServicesFacade
+import org.jetbrains.kotlin.daemon.common.LoopbackNetworkInterface
+import org.jetbrains.kotlin.daemon.common.SOCKET_ANY_FREE_PORT
 import org.jetbrains.kotlin.gradle.plugin.ParentLastURLClassLoader
 import org.jetbrains.kotlin.gradle.plugin.kotlinDebug
+import org.jetbrains.kotlin.incremental.ChangedFiles
 import org.jetbrains.kotlin.incremental.classpathAsList
 import org.jetbrains.kotlin.incremental.destinationAsFile
 import org.jetbrains.kotlin.incremental.makeModuleFile
-import java.io.ByteArrayOutputStream
-import java.io.File
-import java.io.PrintStream
+import java.io.*
+import java.rmi.server.UnicastRemoteObject
 import kotlin.concurrent.thread
 
 internal const val KOTLIN_COMPILER_EXECUTION_STRATEGY_PROPERTY = "kotlin.compiler.execution.strategy"
@@ -58,11 +64,13 @@ internal class GradleCompilerRunner(private val project: Project) : KotlinCompil
             environment: GradleCompilerEnvironment
     ): ExitCode {
         val outputDir = args.destinationAsFile
-        log.debug("Removing all kotlin classes in $outputDir")
         log.info("Using kotlin compiler jar: ${environment.compilerJar}")
 
-        // we're free to delete all classes since only we know about that directory
-        outputDir.deleteRecursively()
+        if (environment !is GradleIncrementalCompilerEnvironment) {
+            log.debug("Removing all kotlin classes in $outputDir")
+            // we're free to delete all classes since only we know about that directory
+            outputDir.deleteRecursively()
+        }
 
         val moduleFile = makeModuleFile(
                 args.moduleName,
@@ -121,14 +129,43 @@ internal class GradleCompilerRunner(private val project: Project) : KotlinCompil
         }
     }
 
-    override fun compileWithDaemon(compilerClassName: String, argsArray: Array<String>, environment: GradleCompilerEnvironment, retryOnConnectionError: Boolean): ExitCode? {
-        val exitCode = super.compileWithDaemon(compilerClassName, argsArray, environment, retryOnConnectionError)
+    override fun compileWithDaemon(compilerClassName: String, argsArray: Array<String>, environment: GradleCompilerEnvironment): ExitCode? {
+        val exitCode = if (environment is GradleIncrementalCompilerEnvironment) {
+            performIncrementalCompilationWithDaemon(argsArray, environment)
+        }
+        else {
+            super.compileWithDaemon(compilerClassName, argsArray, environment)
+        }
         exitCode?.let {
             logFinish(DAEMON_EXECUTION_STRATEGY)
         }
         return exitCode
     }
 
+    private fun performIncrementalCompilationWithDaemon(argsArray: Array<String>, environment: GradleIncrementalCompilerEnvironment): ExitCode? {
+        val port = SOCKET_ANY_FREE_PORT
+        val services = IncrementalCompilationFacadeImpl(environment, port)
+        val compilerOut = ByteArrayOutputStream()
+        val daemonOut = ByteArrayOutputStream()
+
+        val res = withDaemon(environment) { daemon, sessionId ->
+            val remoteCompilerOut = RemoteOutputStreamServer(compilerOut, port)
+            val remoteDaemonOut = RemoteOutputStreamServer(daemonOut, port)
+            daemon.serverSideJvmIC(sessionId, argsArray, services, remoteCompilerOut, remoteDaemonOut, null)
+        }
+
+        val exitCode = res?.get()?.let { exitCodeFromProcessExitCode(it) }
+        if (exitCode == null) {
+            log.warn("Could not perform incremental compilation with Kotlin compile daemon, " +
+                    "non-incremental compilation in fallback mode will be performed")
+        }
+        processCompilerOutput(environment, compilerOut, exitCode)
+        BufferedReader(StringReader(daemonOut.toString())).forEachLine {
+            environment.messageCollector.report(CompilerMessageSeverity.INFO, it, CompilerMessageLocation.NO_LOCATION)
+        }
+        return exitCode
+    }
+
     private fun compileOutOfProcess(
             argsArray: Array<String>,
             compilerClassName: String,

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

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2010-2016 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.compilerRunner
+
+import org.jetbrains.kotlin.cli.common.ExitCode
+import org.jetbrains.kotlin.daemon.common.IncrementalCompilationServicesFacade
+import org.jetbrains.kotlin.daemon.common.LoopbackNetworkInterface
+import org.jetbrains.kotlin.daemon.common.SOCKET_ANY_FREE_PORT
+import org.jetbrains.kotlin.incremental.ChangedFiles
+import org.jetbrains.kotlin.resolve.jvm.JvmClassName
+import java.io.File
+import java.rmi.server.UnicastRemoteObject
+
+internal class IncrementalCompilationFacadeImpl(
+        private val environment: GradleIncrementalCompilerEnvironment,
+        port: Int = SOCKET_ANY_FREE_PORT
+) : IncrementalCompilationServicesFacade,
+    UnicastRemoteObject(port, LoopbackNetworkInterface.clientLoopbackSocketFactory, LoopbackNetworkInterface.serverLoopbackSocketFactory) {
+
+    override fun areFileChangesKnown(): Boolean {
+        return environment.changedFiles is ChangedFiles.Known
+    }
+
+    override fun deletedFiles(): List<File> {
+        return (environment.changedFiles as ChangedFiles.Known).removed
+    }
+
+    override fun modifiedFiles(): List<File> {
+        return (environment.changedFiles as ChangedFiles.Known).modified
+    }
+
+    override fun reportCompileIteration(files: Iterable<File>, exitCode: Int) {
+        environment.reporter.reportCompileIteration(files, ExitCode.values().first { it.code == exitCode })
+    }
+
+    override fun reportIC(message: String) {
+        environment.reporter.report { message }
+    }
+
+    override fun shouldReportIC(): Boolean {
+        return environment.reporter.isDebugEnabled
+    }
+
+    override fun workingDir(): File {
+        return environment.workingDir
+    }
+
+    override fun hasAnnotationsFileUpdater(): Boolean {
+        return environment.kaptAnnotationsFileUpdater != null
+    }
+
+    override fun revert() {
+        environment.kaptAnnotationsFileUpdater!!.revert()
+    }
+
+    override fun updateAnnotations(outdatedClassesJvmNames: Iterable<String>) {
+        val jvmNames = outdatedClassesJvmNames.map { JvmClassName.byInternalName(it) }
+        environment.kaptAnnotationsFileUpdater!!.updateAnnotations(jvmNames)
+    }
+}

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

@@ -38,10 +38,7 @@ import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 import org.jetbrains.kotlin.cli.js.K2JSCompiler
 import org.jetbrains.kotlin.cli.jvm.K2JVMCompiler
-import org.jetbrains.kotlin.compilerRunner.ArgumentUtils
-import org.jetbrains.kotlin.compilerRunner.GradleCompilerEnvironment
-import org.jetbrains.kotlin.compilerRunner.GradleCompilerRunner
-import org.jetbrains.kotlin.compilerRunner.OutputItemsCollectorImpl
+import org.jetbrains.kotlin.compilerRunner.*
 import org.jetbrains.kotlin.gradle.dsl.*
 import org.jetbrains.kotlin.gradle.plugin.CoroutineSupport
 import org.jetbrains.kotlin.gradle.plugin.kotlinDebug
@@ -206,36 +203,27 @@ open class KotlinCompile : AbstractKotlinCompile<K2JVMCompilerArguments>(), Kotl
         args.classpathAsList = compileClasspath.toList()
         args.destinationAsFile = destinationDir
         val outputItemCollector = OutputItemsCollectorImpl()
+        val compilerRunner = GradleCompilerRunner(project)
 
-        if (!incremental) {
-            anyClassesCompiled = true
-            val compilerRunner = GradleCompilerRunner(project)
-            val environment = GradleCompilerEnvironment(compilerJar, messageCollector, outputItemCollector)
-            val exitCode = compilerRunner.runJvmCompiler(sourceRoots.kotlinSourceFiles, sourceRoots.javaSourceRoots, args, environment)
-            processCompilerExitCode(exitCode)
-            return
+        val environment = when {
+            !incremental -> GradleCompilerEnvironment(compilerJar, messageCollector, outputItemCollector)
+            else -> {
+                logger.warn(USING_EXPERIMENTAL_INCREMENTAL_MESSAGE)
+                val reporter = GradleICReporter(project.rootProject.projectDir)
+                GradleIncrementalCompilerEnvironment(compilerJar, changedFiles, reporter, taskBuildDirectory,
+                        messageCollector, outputItemCollector, kaptAnnotationsFileUpdater)
+            }
         }
 
-        logger.warn(USING_EXPERIMENTAL_INCREMENTAL_MESSAGE)
-        val reporter = GradleICReporter(project.rootProject.projectDir)
-        val compiler = IncrementalJvmCompilerRunner(
-                taskBuildDirectory,
-                sourceRoots.javaSourceRoots,
-                cacheVersions,
-                reporter,
-                kaptAnnotationsFileUpdater,
-                artifactDifferenceRegistryProvider,
-                artifactFile
-        )
         try {
-            val exitCode = compiler.compile(sourceRoots.kotlinSourceFiles, args, messageCollector, { changedFiles })
+            val exitCode = compilerRunner.runJvmCompiler(sourceRoots.kotlinSourceFiles, sourceRoots.javaSourceRoots, args, environment)
             processCompilerExitCode(exitCode)
         }
         catch (e: Throwable) {
             cleanupOnError()
             throw e
         }
-        anyClassesCompiled = compiler.anyClassesCompiled
+        anyClassesCompiled = true
     }
 
     private fun cleanupOnError() {

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

@@ -17,17 +17,28 @@
 package org.jetbrains.kotlin.incremental
 
 import org.gradle.api.logging.Logging
+import org.jetbrains.kotlin.cli.common.ExitCode
 import org.jetbrains.kotlin.gradle.plugin.kotlinDebug
 import java.io.File
 
 internal class GradleICReporter(private val projectRootFile: File) : ICReporter() {
     private val log = Logging.getLogger(GradleICReporter::class.java)
 
+    val isDebugEnabled: Boolean
+            get() = log.isDebugEnabled
+
     override fun report(message: ()->String) {
         log.kotlinDebug(message)
     }
 
     override fun pathsAsString(files: Iterable<File>): String =
             files.pathsAsStringRelativeTo(projectRootFile)
+
+    override fun reportCompileIteration(sourceFiles: Iterable<File>, exitCode: ExitCode) {
+        if (sourceFiles.any()) {
+            report { "compile iteration: ${pathsAsString(sourceFiles)}" }
+        }
+        report { "compiler exit code: $exitCode" }
+    }
 }