4c2b5f4d30
This is needed to support minor gc tests on the Blink side. Bug: chromium:1029379 Change-Id: Ic7ce1ae8e626b87738d76663ceecf7198e425d18 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3437050 Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Commit-Queue: Anton Bikineev <bikineev@chromium.org> Auto-Submit: Anton Bikineev <bikineev@chromium.org> Cr-Commit-Position: refs/heads/main@{#78943}
102 lines
2.8 KiB
C++
102 lines
2.8 KiB
C++
// Copyright 2021 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef INCLUDE_CPPGC_TESTING_H_
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#define INCLUDE_CPPGC_TESTING_H_
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#include "cppgc/common.h"
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#include "cppgc/macros.h"
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#include "v8config.h" // NOLINT(build/include_directory)
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namespace cppgc {
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class HeapHandle;
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/**
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* Namespace contains testing helpers.
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*/
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namespace testing {
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/**
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* Overrides the state of the stack with the provided value. Takes precedence
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* over other parameters that set the stack state. Must no be nested.
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*/
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class V8_EXPORT V8_NODISCARD OverrideEmbedderStackStateScope final {
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CPPGC_STACK_ALLOCATED();
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public:
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/**
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* Constructs a scoped object that automatically enters and leaves the scope.
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*
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* \param heap_handle The corresponding heap.
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*/
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explicit OverrideEmbedderStackStateScope(HeapHandle& heap_handle,
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EmbedderStackState state);
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~OverrideEmbedderStackStateScope();
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OverrideEmbedderStackStateScope(const OverrideEmbedderStackStateScope&) =
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delete;
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OverrideEmbedderStackStateScope& operator=(
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const OverrideEmbedderStackStateScope&) = delete;
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private:
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HeapHandle& heap_handle_;
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};
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/**
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* Testing interface for managed heaps that allows for controlling garbage
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* collection timings. Embedders should use this class when testing the
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* interaction of their code with incremental/concurrent garbage collection.
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*/
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class V8_EXPORT StandaloneTestingHeap final {
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public:
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explicit StandaloneTestingHeap(HeapHandle&);
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/**
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* Start an incremental garbage collection.
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*/
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void StartGarbageCollection();
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/**
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* Perform an incremental step. This will also schedule concurrent steps if
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* needed.
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*
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* \param stack_state The state of the stack during the step.
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*/
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bool PerformMarkingStep(EmbedderStackState stack_state);
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/**
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* Finalize the current garbage collection cycle atomically.
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* Assumes that garbage collection is in progress.
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*
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* \param stack_state The state of the stack for finalizing the garbage
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* collection cycle.
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*/
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void FinalizeGarbageCollection(EmbedderStackState stack_state);
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/**
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* Toggle main thread marking on/off. Allows to stress concurrent marking
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* (e.g. to better detect data races).
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*
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* \param should_mark Denotes whether the main thread should contribute to
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* marking. Defaults to true.
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*/
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void ToggleMainThreadMarking(bool should_mark);
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/**
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* Force enable compaction for the next garbage collection cycle.
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*/
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void ForceCompactionForNextGarbageCollection();
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private:
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HeapHandle& heap_handle_;
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};
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V8_EXPORT bool IsHeapObjectOld(void*);
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} // namespace testing
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} // namespace cppgc
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#endif // INCLUDE_CPPGC_TESTING_H_
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