v8/include/cppgc/testing.h
Francis McCabe 8380ebb277 Revert "cppgc: Rework testing GC infrastructure"
This reverts commit eb4536797e.

Reason for revert: Breaks MSAN: https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/37053

Original change's description:
> cppgc: Rework testing GC infrastructure
>
> Instead of moving the stand-alone logic to the base heap, allows
> specific heaps to override their stand-alone GC behavior. This allows
> CppHeap to reuse the unified heap bottlenecks and visitors for
> testing. This works as long as any v8 references are empty as there is
> no Isolate attached to the heap in this case.
>
> - Reverts parts of https://crrev.com/c/2716291
> - Relands parts of https://crrev.com/c/2718146
>
> In addition, add tests covering v8::CppHeap and cppgc::Heap.
>
> Bug: chromium:1056170
> Change-Id: I47dc88c7f0e4961a1aadd60da9b05bff4dcfb27a
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2718612
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Omer Katz <omerkatz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73077}

Bug: chromium:1056170
Change-Id: Ieda44c07d08f837a6632f96b8db6d5bec87dd521
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2723216
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Francis McCabe <fgm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73078}
2021-02-26 18:50:23 +00:00

65 lines
1.7 KiB
C++

// Copyright 2021 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 INCLUDE_CPPGC_TESTING_H_
#define INCLUDE_CPPGC_TESTING_H_
#include "cppgc/common.h"
#include "cppgc/macros.h"
#include "v8config.h" // NOLINT(build/include_directory)
namespace cppgc {
class HeapHandle;
/**
* Namespace contains testing helpers.
*/
namespace testing {
/**
* Testing helper used to acces heap internals.
*/
class V8_EXPORT Heap final {
public:
/**
* Atomically collects garbage on the C++ heap.
*
* \param heap_handle The corresponding heap.
* \param stack_state The stack state to assume for the garbage collection.
*/
void CollectGarbage(HeapHandle& heap_handle, EmbedderStackState stack_state);
};
/**
* Overrides the state of the stack with the provided value. Takes precedence
* over other parameters that set the stack state. Must no be nested.
*/
class V8_EXPORT V8_NODISCARD OverrideEmbedderStackStateScope final {
CPPGC_STACK_ALLOCATED();
public:
/**
* Constructs a scoped object that automatically enters and leaves the scope.
*
* \param heap_handle The corresponding heap.
*/
explicit OverrideEmbedderStackStateScope(HeapHandle& heap_handle,
EmbedderStackState state);
~OverrideEmbedderStackStateScope();
OverrideEmbedderStackStateScope(const OverrideEmbedderStackStateScope&) =
delete;
OverrideEmbedderStackStateScope& operator=(
const OverrideEmbedderStackStateScope&) = delete;
private:
HeapHandle& heap_handle_;
};
} // namespace testing
} // namespace cppgc
#endif // INCLUDE_CPPGC_TESTING_H_