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// Copyright 2012 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 CC_RASTER_WORKER_POOL_H_
#define CC_RASTER_WORKER_POOL_H_
#include <string>
#include "base/basictypes.h"
#include "base/callback.h"
#include "base/threading/thread.h"
#include "cc/rendering_stats.h"
#include "ui/gfx/rect.h"
namespace skia {
class LazyPixelRef;
}
namespace cc {
class PicturePileImpl;
class RasterWorkerPool {
public:
explicit RasterWorkerPool(size_t num_raster_threads);
virtual ~RasterWorkerPool();
static scoped_ptr<RasterWorkerPool> Create(size_t num_raster_threads) {
return make_scoped_ptr(new RasterWorkerPool(num_raster_threads));
}
bool IsBusy();
void PostRasterTaskAndReply(PicturePileImpl* picture_pile,
uint8* buffer,
const gfx::Rect& rect,
float contents_scale,
const base::Closure& reply);
void PostImageDecodeTaskAndReply(skia::LazyPixelRef* pixel_ref,
const base::Closure& reply);
void GetRenderingStats(RenderingStats* stats);
private:
class Thread : public base::Thread {
public:
class Task {
public:
Task(Thread* thread);
~Task();
private:
friend class RasterWorkerPool;
Thread* thread_;
RenderingStats rendering_stats_;
DISALLOW_COPY_AND_ASSIGN(Task);
};
Thread(const std::string name);
virtual ~Thread();
int num_pending_tasks() const { return num_pending_tasks_; }
RenderingStats& rendering_stats() { return rendering_stats_; }
private:
int num_pending_tasks_;
RenderingStats rendering_stats_;
DISALLOW_COPY_AND_ASSIGN(Thread);
};
class PendingTaskComparator {
public:
bool operator() (const Thread* a, const Thread* b) const {
return a->num_pending_tasks() < b->num_pending_tasks();
}
};
Thread::Task* CreateTask();
void DestroyTask(Thread::Task* task);
void OnTaskCompleted(Thread::Task* task,
const base::Closure& reply);
void OnRasterTaskCompleted(Thread::Task* task,
scoped_refptr<PicturePileImpl> picture_pile,
const base::Closure& reply);
typedef std::vector<Thread*> ThreadVector;
ThreadVector raster_threads_;
DISALLOW_COPY_AND_ASSIGN(RasterWorkerPool);
};
} // namespace cc
#endif // CC_RASTER_WORKER_POOL_H_
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