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// Copyright 2014 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 ANDROID_WEBVIEW_BROWSER_DEFERRED_GPU_COMMAND_SERVICE_H_
#define ANDROID_WEBVIEW_BROWSER_DEFERRED_GPU_COMMAND_SERVICE_H_
#include <queue>
#include <utility>
#include "base/lazy_instance.h"
#include "base/memory/ref_counted.h"
#include "base/threading/thread_local.h"
#include "base/time/time.h"
#include "gpu/command_buffer/service/in_process_command_buffer.h"
namespace android_webview {
class ScopedAllowGL {
public:
ScopedAllowGL();
~ScopedAllowGL();
static bool IsAllowed();
private:
static base::LazyInstance<base::ThreadLocalBoolean> allow_gl;
DISALLOW_COPY_AND_ASSIGN(ScopedAllowGL);
};
class DeferredGpuCommandService
: public gpu::InProcessCommandBuffer::Service,
public base::RefCountedThreadSafe<DeferredGpuCommandService> {
public:
static void SetInstance();
static DeferredGpuCommandService* GetInstance();
void ScheduleTask(const base::Closure& task) override;
void ScheduleIdleWork(const base::Closure& task) override;
bool UseVirtualizedGLContexts() override;
scoped_refptr<gpu::gles2::ShaderTranslatorCache> shader_translator_cache()
override;
void RunTasks();
// If |is_idle| is false, this will only run older idle tasks.
void PerformIdleWork(bool is_idle);
// Flush the idle queue until it is empty. This is different from
// PerformIdleWork(is_idle = true), which does not run any newly scheduled
// idle tasks during the idle run.
void PerformAllIdleWork();
void AddRef() const override;
void Release() const override;
protected:
~DeferredGpuCommandService() override;
friend class base::RefCountedThreadSafe<DeferredGpuCommandService>;
private:
friend class ScopedAllowGL;
static void RequestProcessGL();
DeferredGpuCommandService();
size_t IdleQueueSize();
base::Lock tasks_lock_;
std::queue<base::Closure> tasks_;
std::queue<std::pair<base::Time, base::Closure> > idle_tasks_;
scoped_refptr<gpu::gles2::ShaderTranslatorCache> shader_translator_cache_;
DISALLOW_COPY_AND_ASSIGN(DeferredGpuCommandService);
};
} // namespace android_webview
#endif // ANDROID_WEBVIEW_BROWSER_DEFERRED_GPU_COMMAND_SERVICE_H_
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