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// Copyright 2020 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_UNITTESTS_HEAP_CPPGC_JS_UNIFIED_HEAP_UTILS_H_
#define V8_UNITTESTS_HEAP_CPPGC_JS_UNIFIED_HEAP_UTILS_H_
#include "include/cppgc/heap.h"
#include "include/v8-cppgc.h"
#include "include/v8-local-handle.h"
#include "test/unittests/heap/heap-utils.h"
namespace v8 {
class CppHeap;
namespace internal {
class CppHeap;
class UnifiedHeapTest : public TestWithHeapInternalsAndContext {
public:
UnifiedHeapTest();
explicit UnifiedHeapTest(
std::vector<std::unique_ptr<cppgc::CustomSpaceBase>>);
~UnifiedHeapTest() override = default;
void CollectGarbageWithEmbedderStack(cppgc::Heap::SweepingType sweeping_type =
cppgc::Heap::SweepingType::kAtomic);
void CollectGarbageWithoutEmbedderStack(
cppgc::Heap::SweepingType sweeping_type =
cppgc::Heap::SweepingType::kAtomic);
void CollectYoungGarbageWithEmbedderStack(
cppgc::Heap::SweepingType sweeping_type =
cppgc::Heap::SweepingType::kAtomic);
void CollectYoungGarbageWithoutEmbedderStack(
cppgc::Heap::SweepingType sweeping_type =
cppgc::Heap::SweepingType::kAtomic);
CppHeap& cpp_heap() const;
cppgc::AllocationHandle& allocation_handle();
private:
std::unique_ptr<v8::CppHeap> cpp_heap_;
};
class WrapperHelper {
public:
static constexpr size_t kWrappableTypeEmbedderIndex = 0;
static constexpr size_t kWrappableInstanceEmbedderIndex = 1;
// Id that identifies types that should be traced.
static constexpr uint16_t kTracedEmbedderId = uint16_t{0xA50F};
static constexpr WrapperDescriptor DefaultWrapperDescriptor() {
return WrapperDescriptor(kWrappableTypeEmbedderIndex,
kWrappableInstanceEmbedderIndex,
kTracedEmbedderId);
}
// Sets up a V8 API object so that it points back to a C++ object. The setup
// used is recognized by the GC and references will be followed for liveness
// analysis (marking) as well as tooling (snapshot).
static v8::Local<v8::Object> CreateWrapper(v8::Local<v8::Context> context,
void* wrappable_type,
void* wrappable_object,
const char* class_name = "");
// Resets the connection of a wrapper (JS) to its wrappable (C++), meaning
// that the wrappable object is not longer kept alive by the wrapper object.
static void ResetWrappableConnection(v8::Local<v8::Object> api_object);
// Sets up the connection of a wrapper (JS) to its wrappable (C++). Does not
// emit any possibly needed write barrier.
static void SetWrappableConnection(v8::Local<v8::Object> api_object, void*,
void*);
};
} // namespace internal
} // namespace v8
#endif // V8_UNITTESTS_HEAP_CPPGC_JS_UNIFIED_HEAP_UTILS_H_
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