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// Copyright 2015 The Chromium 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 CHROME_BROWSER_RENDERER_HOST_THREAD_HOP_RESOURCE_THROTTLE_H_
#define CHROME_BROWSER_RENDERER_HOST_THREAD_HOP_RESOURCE_THROTTLE_H_
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "content/public/browser/resource_throttle.h"
namespace base {
class TimeTicks;
}
// A ResourceThrottle which defers request start, redirect, and response
// completion on an IO to UI to IO round-trip. This throttle will be added on a
// field trial to determine the cost of making some resource-related decisions
// on the UI thread. See https://crbug.com/524228.
class ThreadHopResourceThrottle : public content::ResourceThrottle {
public:
ThreadHopResourceThrottle();
~ThreadHopResourceThrottle() override;
static bool IsEnabled();
// content::ResourceThrottle:
void WillStartRequest(bool* defer) override;
void WillRedirectRequest(const net::RedirectInfo& redirect_info,
bool* defer) override;
void WillProcessResponse(bool* defer) override;
const char* GetNameForLogging() const override;
private:
void ResumeAfterThreadHop();
void Resume(const base::TimeTicks& time);
base::WeakPtrFactory<ThreadHopResourceThrottle> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(ThreadHopResourceThrottle);
};
#endif // CHROME_BROWSER_RENDERER_HOST_THREAD_HOP_RESOURCE_THROTTLE_H_
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