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09a8440b45
PR-URL: https://github.com/nodejs/node/pull/51362 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
89 lines
3.2 KiB
C++
89 lines
3.2 KiB
C++
// Copyright 2020 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 V8_UNITTESTS_HEAP_CPPGC_JS_UNIFIED_HEAP_UTILS_H_
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#define V8_UNITTESTS_HEAP_CPPGC_JS_UNIFIED_HEAP_UTILS_H_
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#include "include/cppgc/heap.h"
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#include "include/v8-cppgc.h"
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#include "include/v8-local-handle.h"
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#include "test/unittests/heap/heap-utils.h"
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namespace v8 {
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class CppHeap;
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namespace internal {
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class CppHeap;
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class UnifiedHeapTest : public TestWithHeapInternalsAndContext {
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public:
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UnifiedHeapTest();
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explicit UnifiedHeapTest(
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std::vector<std::unique_ptr<cppgc::CustomSpaceBase>>);
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~UnifiedHeapTest() override = default;
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void CollectGarbageWithEmbedderStack(cppgc::Heap::SweepingType sweeping_type =
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cppgc::Heap::SweepingType::kAtomic);
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void CollectGarbageWithoutEmbedderStack(
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cppgc::Heap::SweepingType sweeping_type =
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cppgc::Heap::SweepingType::kAtomic);
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void CollectYoungGarbageWithEmbedderStack(
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cppgc::Heap::SweepingType sweeping_type =
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cppgc::Heap::SweepingType::kAtomic);
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void CollectYoungGarbageWithoutEmbedderStack(
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cppgc::Heap::SweepingType sweeping_type =
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cppgc::Heap::SweepingType::kAtomic);
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CppHeap& cpp_heap() const;
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cppgc::AllocationHandle& allocation_handle();
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private:
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std::unique_ptr<v8::CppHeap> cpp_heap_;
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};
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class WrapperHelper {
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public:
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static constexpr size_t kWrappableTypeEmbedderIndex = 0;
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static constexpr size_t kWrappableInstanceEmbedderIndex = 1;
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// Id that identifies types that should be traced.
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static constexpr uint16_t kTracedEmbedderId = uint16_t{0xA50F};
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static constexpr WrapperDescriptor DefaultWrapperDescriptor() {
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return WrapperDescriptor(kWrappableTypeEmbedderIndex,
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kWrappableInstanceEmbedderIndex,
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kTracedEmbedderId);
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}
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// Sets up a V8 API object so that it points back to a C++ object. The setup
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// used is recognized by the GC and references will be followed for liveness
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// analysis (marking) as well as tooling (snapshot).
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static v8::Local<v8::Object> CreateWrapper(v8::Local<v8::Context> context,
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void* wrappable_type,
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void* wrappable_object,
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const char* class_name = "");
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// Resets the connection of a wrapper (JS) to its wrappable (C++), meaning
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// that the wrappable object is not longer kept alive by the wrapper object.
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static void ResetWrappableConnection(v8::Local<v8::Object> api_object);
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// Sets up the connection of a wrapper (JS) to its wrappable (C++). Does not
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// emit any possibly needed write barrier.
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static void SetWrappableConnection(v8::Local<v8::Object> api_object, void*,
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void*);
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template <typename T>
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static T* UnwrapAs(v8::Local<v8::Object> api_object) {
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return reinterpret_cast<T*>(api_object->GetAlignedPointerFromInternalField(
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kWrappableInstanceEmbedderIndex));
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}
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};
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} // namespace internal
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} // namespace v8
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#endif // V8_UNITTESTS_HEAP_CPPGC_JS_UNIFIED_HEAP_UTILS_H_
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