[K/N] Allow tweaking executionTimeout of RunGTest

kotlin-native/HACKING.md

@@ -142,11 +142,12 @@ To run Kotlin/Native target-specific tests use (takes time):
 
  ### Runtime unit tests
 
-To run runtime unit tests on the host machine for both mimalloc and the standard allocator:
+To run all runtime unit tests on the host machine:
 
     ./gradlew :kotlin-native:runtime:hostRuntimeTests
 
-To run tests for only one of these two allocators, run `:kotlin-native:runtime:hostStdAllocRuntimeTests` or `:kotlin-native:runtime:hostMimallocRuntimeTests`.
+Use `-Pgtest_filter=` to filter which tests to run (uses Google Test filter syntax).
+Use `-Pgtest_timeout=` to limit how much time each test executable can take (accepts values like `30s`, `1h15m20s`, and so on).
 
 We use [Google Test](https://github.com/google/googletest) to execute the runtime unit tests. The build automatically fetches
 the specified Google Test revision to `kotlin-native/runtime/googletest`. It is possible to manually modify the downloaded GTest sources for debug

kotlin-native/build-tools/src/main/kotlin/org/jetbrains/kotlin/bitcode/CompileToBitcodePlugin.kt

@@ -603,7 +603,10 @@ open class CompileToBitcodeExtension @Inject constructor(val project: Project) :
                 filter.set(project.findProperty("gtest_filter") as? String)
                 tsanSuppressionsFile.set(project.layout.projectDirectory.file("tsan_suppressions.txt"))
                 this.target.set(target)
-                this.executionTimeout.set(Duration.ofMinutes(30)) // The tests binaries are big.
+                this.executionTimeout.set(
+                    (project.findProperty("gtest_timeout") as? String)?.let {
+                        Duration.parse("PT${it}")
+                    } ?: Duration.ofMinutes(30)) // The tests binaries are big.
 
                 usesService(runGTestSemaphore)
             }