gradle-plugin: Allow compile time measurement

GRADLE_PLUGIN.md

@@ -67,12 +67,24 @@ Each element (interop) in this block corresponds to some native library describe
 
 Each interop is processed by the plugin in two steps:
 
-1. Stub generation. In this step the plugin uses `cinterop` tool to generate Kotlin and bitcode (*.bc) stubs for the
+1. **Stub generation.** In this step the plugin uses `cinterop` tool to generate Kotlin and bitcode (*.bc) stubs for the
 library. You can specify additional parameters for this tool in the interop block (e.g. a custom def-file is specified
 in the example above). See [**Plugin DSL**](#plugin-dsl) section below for available parameters and
 [`INTEROP.md`](INTEROP.md) for `cinterop` tool description.
-2. Stub compilation. In this step the plugin uses Kotlin/Native compiler to compile the stubs generated by the step (1)
+2. **Stub compilation.** In this step the plugin uses Kotlin/Native compiler to compile the stubs generated by the step (1)
 into a klib which can be linked with a Kotlin/Native application.
+Usually there is no need to specify additional compilation options for this stage. But if for some reason you need to do
+it, you can use `compileStubsConfig` property of an interop. This property provides an access to a `KonanCompileConfig`
+object containing the same methods as an artifact in the `konanArtifacts` block. E.g. this sample enables time measurement
+for compilation of stubs:
+
+    ```
+    konanInterop {
+       stdio {
+           compileStubsConfig.measureTime true
+       }
+    }
+    ```
 
 To build some artifact with an interop add `useInterop` command in the artifact section:
 
@@ -154,6 +166,7 @@ You may get this task using the `compilationTask` property of an artifact or by
     |`noMain            `|`boolean`                   |Is the `main` function provided by a library used |
     |`enableOptimization`|`boolean`                   |Is the optimization enabled                       |
     |`enableAssertions  `|`boolean`                   |Is the assertion support enabled                  |
+    |`measureTime       `|`boolean`                   |Does the compiler print phase time                |
     
 * __gen*InteropName*InteropStubs__. The plugin creates such a task for each an interop defined in a `konanInterop` block.
 You may get this task using `generateStubsTask` property of an interop object or by its name:
@@ -167,14 +180,15 @@ You may get this task using `generateStubsTask` property of an interop object or
     from a build script
     
     |Property       |Type                        |Description                                             |
-    |-------------- |----------------------------|--------------------------------------------------|
+    |-------------- |----------------------------|--------------------------------------------------------|
-    |`stubsDir     `|`File`                      |An output directory for the Kotlin stubs generated|
+    |`stubsDir     `|`File`                      |An output directory for the Kotlin stubs generated      |
     |`libsDir      `|`File`                      |An output directory for the compiled stubs              |
     |`defFile      `|`File`                      |Def-file used by the interop                            |
     |`compilerOpts `|`List<String>`              |Additional options passed to clang                      |
     |`linkerOpts   `|`List<String>`              |Additional options passed to a linker                   |
     |`headers      `|`Collection<FileCollection>`|Additional headers used for stub generation             |
     |`linkFiles    `|`Collection<FileCollection>`|Additional files linked with the stubs                  |
+    |`measureTime  `|`boolean`                   |Does the compiler print phase time for stubs compilation|
     
 * __compile*InteropName*InteropStubs__. The plugin creates such a task for each interop defined in a `konanInterop` block.
 You may get this task using `compileStubsTask` property of an interop object or by its name:
@@ -271,7 +285,10 @@ For this project the task graph will be the following:
              useInterop "interopName"
              
              // Print all parameters during the build.
-             dumpParameters(true)
+             dumpParameters true
+             
+             // Print time of compilation phases (equivalent of the `--time` command line option).
+             measureTime true
              
              // Add the `anotherTask` to the compilation task dependencies.
              dependsOn anotherTask
@@ -296,7 +313,10 @@ For this project the task graph will be the following:
 
              link <files which will be linked with native stubs>   // Additional files to link with native stubs.
              
-             dumpParameters(true)                                   // Print all parameters during the build.
+             dumpParameters true                                   // Print all parameters during the build. 
+             
+             // Print time of stub compilation phases (equivalent of the `--time` command line option).
+             measureTime true
                                                
              // Add the `anotherTask` to the stub generation task dependencies.
              dependsOn anotherTask

tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KonanCompileTask.kt

@@ -95,6 +95,8 @@ open class KonanCompileTask: KonanTargetableTask() {
         internal set
     @Input var enableAssertions   = false
         internal set
+    @Console var measureTime      = false
+        internal set
 
     @Optional @Input var languageVersion : String? = null
         internal set
@@ -130,6 +132,7 @@ open class KonanCompileTask: KonanTargetableTask() {
         addKey("-nomain", noMain)
         addKey("-opt", enableOptimization)
         addKey("-ea", enableAssertions)
+        addKey("--time", measureTime)
 
         addAll(extraOpts)
 
@@ -286,6 +289,10 @@ open class KonanCompileConfig(
         enableAssertions = true
     }
 
+    fun measureTime(value: Boolean) = with(compilationTask) {
+        measureTime = value
+    }
+
     fun dumpParameters(value: Boolean) = with(compilationTask) {
         dumpParameters = value
     }

tools/kotlin-native-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KonanInteropTask.kt

@@ -66,7 +66,9 @@ open class KonanInteropTask: KonanTargetableTask() {
     @Optional @Input var manifest: String? = null
         internal set
 
-    @Input var dumpParameters: Boolean = false
+    @Input var dumpParameters = false
+        internal set
+
     @Input val compilerOpts   = mutableListOf<String>()
     @Input val linkerOpts     = mutableListOf<String>()
     @Input val extraOpts      = mutableListOf<String>()
@@ -207,6 +209,8 @@ open class KonanInteropConfig(
         compileStubsTask.dumpParameters = value
     }
 
+    fun measureTime(value: Boolean) = compileStubsConfig.measureTime(value)
+
     fun dependsOn(dependency: Any) = generateStubsTask.dependsOn(dependency)
 
     fun extraOpts(vararg values: Any) = extraOpts(values.asList())

tools/kotlin-native-gradle-plugin/src/test/groovy/org/jetbrains/kotlin/gradle/plugin/test/TaskSpecification.groovy

@@ -82,4 +82,31 @@ class TaskSpecification extends BaseKonanSpecification {
         result.output.contains("[-lpthread]$ls[$expectedKlibPath]$ls[$expectedBcPath]".stripIndent().trim())
     }
 
+    def 'Compiler should print time measurements if measureTime flag is set'() {
+        when:
+        def project = KonanInteropProject.createEmpty(projectDirectory)
+        project.generateSrcFile("main.kt")
+        project.addInteropSetting("measureTime", "true")
+        project.addCompilationSetting("measureTime", "true")
+        def result = project.createRunner().withArguments('build').build()
+
+        then:
+        result.output.findAll(~/FRONTEND:\s+\d+\s+msec/).size() == 2
+        result.output.findAll(~/BACKEND:\s+\d+\s+msec/).size() == 2
+        result.output.findAll(~/LINK_STAGE:\s+\d+\s+msec/).size() == 1
+    }
+
+    def 'Interop should provide access to stub compilation config'() {
+        when:
+        def project = KonanInteropProject.createEmpty(projectDirectory)
+        project.generateSrcFile("main.kt")
+        project.addInteropSetting("compileStubsConfig.measureTime", "true")
+        def result = project.createRunner().withArguments('build').build()
+
+        then:
+        result.output.findAll(~/FRONTEND:\s+\d+\s+msec/).size() == 1
+        result.output.findAll(~/BACKEND:\s+\d+\s+msec/).size() == 1
+        result.output.findAll(~/LINK_STAGE:\s+\d+\s+msec/).size() == 0
+    }
+
 }