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[K/N] Parallelize marking in CMS GC

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This change parallelizes marking by making each non-native Kotlin thread
mark its own view of the heap. To make this safe, we make flipping the
marking bit atomic which ensures that threads do not try to trace the
same objects.

Co-authored-by: Johan Bay <jobay@google.com>

Merge-request: KOTLIN-MR-423
Merged-by: Alexander Shabalin <alexander.shabalin@jetbrains.com>
This commit is contained in:
Johan Bay
2022-09-01 09:07:54 +00:00
committed by Space
parent 0734456a87
commit f71931d04b
14 changed files with 303 additions and 85 deletions
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kotlin-native/runtime/src/main/cpp/CompilerConstants.cpp
+5
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@@ -19,6 +19,7 @@ using Kotlin_getSourceInfo_FunctionType = int(*)(void * /*addr*/, SourceInfo* /*
* but can be changed after compiling caches. So use this way for variables, which will be rarely accessed.
*/
RUNTIME_WEAK int32_t Kotlin_destroyRuntimeMode = 1;
RUNTIME_WEAK int32_t Kotlin_gcMarkSingleThreaded = 1;
RUNTIME_WEAK int32_t Kotlin_workerExceptionHandling = 0;
RUNTIME_WEAK int32_t Kotlin_suspendFunctionsFromAnyThreadFromObjC = 0;
RUNTIME_WEAK Kotlin_getSourceInfo_FunctionType Kotlin_getSourceInfo_Function = nullptr;
@@ -33,6 +34,10 @@ ALWAYS_INLINE compiler::DestroyRuntimeMode compiler::destroyRuntimeMode() noexce
return static_cast<compiler::DestroyRuntimeMode>(Kotlin_destroyRuntimeMode);
}
ALWAYS_INLINE bool compiler::gcMarkSingleThreaded() noexcept {
return Kotlin_gcMarkSingleThreaded != 0;
}
ALWAYS_INLINE compiler::WorkerExceptionHandling compiler::workerExceptionHandling() noexcept {
return static_cast<compiler::WorkerExceptionHandling>(Kotlin_workerExceptionHandling);
}