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// Copyright (c) 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 GPU_COMMAND_BUFFER_CLIENT_BUFFER_TRACKER_H_
#define GPU_COMMAND_BUFFER_CLIENT_BUFFER_TRACKER_H_
#include <stdint.h>
#include "base/containers/hash_tables.h"
#include "base/macros.h"
#include "gles2_impl_export.h"
#include "gpu/command_buffer/common/gles2_cmd_format.h"
namespace gpu {
class MappedMemoryManager;
namespace gles2 {
// Tracks buffer objects for client side of command buffer.
class GLES2_IMPL_EXPORT BufferTracker {
public:
class GLES2_IMPL_EXPORT Buffer {
public:
Buffer(GLuint id,
unsigned int size,
int32_t shm_id,
uint32_t shm_offset,
void* address)
: id_(id),
size_(size),
shm_id_(shm_id),
shm_offset_(shm_offset),
address_(address),
mapped_(false),
last_usage_token_(0),
last_async_upload_token_(0) {}
GLenum id() const {
return id_;
}
unsigned int size() const {
return size_;
}
int32_t shm_id() const { return shm_id_; }
uint32_t shm_offset() const { return shm_offset_; }
void* address() const {
return address_;
}
void set_mapped(bool mapped) {
mapped_ = mapped;
}
bool mapped() const {
return mapped_;
}
void set_last_usage_token(int token) {
last_usage_token_ = token;
}
int last_usage_token() const {
return last_usage_token_;
}
void set_last_async_upload_token(uint32_t async_token) {
last_async_upload_token_ = async_token;
}
GLuint last_async_upload_token() const {
return last_async_upload_token_;
}
private:
friend class BufferTracker;
friend class BufferTrackerTest;
GLuint id_;
unsigned int size_;
int32_t shm_id_;
uint32_t shm_offset_;
void* address_;
bool mapped_;
int32_t last_usage_token_;
GLuint last_async_upload_token_;
};
BufferTracker(MappedMemoryManager* manager);
~BufferTracker();
Buffer* CreateBuffer(GLuint id, GLsizeiptr size);
Buffer* GetBuffer(GLuint id);
void RemoveBuffer(GLuint id);
// Frees the block of memory associated with buffer, pending the passage
// of a token.
void FreePendingToken(Buffer* buffer, int32_t token);
void Unmanage(Buffer* buffer);
void Free(Buffer* buffer);
private:
typedef base::hash_map<GLuint, Buffer*> BufferMap;
MappedMemoryManager* mapped_memory_;
BufferMap buffers_;
DISALLOW_COPY_AND_ASSIGN(BufferTracker);
};
} // namespace gles2
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_CLIENT_BUFFER_TRACKER_H_