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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_WEB_TEST_RENDERER_GC_CONTROLLER_H_
#define CONTENT_WEB_TEST_RENDERER_GC_CONTROLLER_H_
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "gin/wrappable.h"
namespace blink {
class WebLocalFrame;
}
namespace gin {
class Arguments;
}
namespace content {
class GCController : public gin::Wrappable<GCController> {
public:
static gin::WrapperInfo kWrapperInfo;
GCController(const GCController&) = delete;
GCController& operator=(const GCController&) = delete;
static void Install(blink::WebLocalFrame* frame);
private:
// In the first GC cycle, a weak callback of the DOM wrapper is called back
// and the weak callback disposes a persistent handle to the DOM wrapper.
// In the second GC cycle, the DOM wrapper is reclaimed.
// Given that two GC cycles are needed to collect one DOM wrapper,
// more than two GC cycles are needed to collect all DOM wrappers
// that are chained. Seven GC cycles look enough in most tests.
static constexpr int kNumberOfGCsForFullCollection = 7;
explicit GCController(blink::WebLocalFrame* frame);
~GCController() override;
// gin::Wrappable.
gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
v8::Isolate* isolate) override;
void Collect(const gin::Arguments& args);
void CollectAll(const gin::Arguments& args);
void AsyncCollectAll(const gin::Arguments& args);
void MinorCollect(const gin::Arguments& args);
void AsyncCollectAllWithEmptyStack(
v8::UniquePersistent<v8::Function> callback);
const raw_ptr<blink::WebLocalFrame> frame_;
base::WeakPtrFactory<GCController> weak_ptr_factory_{this};
};
} // namespace content
#endif // CONTENT_WEB_TEST_RENDERER_GC_CONTROLLER_H_
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