#ifndef GPU_COMMAND_BUFFER_COMMON_BUFFER_H_
#define GPU_COMMAND_BUFFER_COMMON_BUFFER_H_
+#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/shared_memory.h"
-#include "gpu/command_buffer/common/types.h"
#include "gpu/gpu_export.h"
namespace base {
namespace gpu {
+class GPU_EXPORT BufferBacking {
+ public:
+ virtual ~BufferBacking() {}
+ virtual void* GetMemory() const = 0;
+ virtual size_t GetSize() const = 0;
+};
+
+class GPU_EXPORT SharedMemoryBufferBacking : public BufferBacking {
+ public:
+ SharedMemoryBufferBacking(scoped_ptr<base::SharedMemory> shared_memory,
+ size_t size);
+ virtual ~SharedMemoryBufferBacking();
+ virtual void* GetMemory() const OVERRIDE;
+ virtual size_t GetSize() const OVERRIDE;
+ base::SharedMemory* shared_memory() { return shared_memory_.get(); }
+
+ private:
+ scoped_ptr<base::SharedMemory> shared_memory_;
+ size_t size_;
+ DISALLOW_COPY_AND_ASSIGN(SharedMemoryBufferBacking);
+};
+
// Buffer owns a piece of shared-memory of a certain size.
class GPU_EXPORT Buffer : public base::RefCountedThreadSafe<Buffer> {
public:
- Buffer(scoped_ptr<base::SharedMemory> shared_memory, size_t size);
+ explicit Buffer(scoped_ptr<BufferBacking> backing);
- base::SharedMemory* shared_memory() const { return shared_memory_.get(); }
+ BufferBacking* backing() const { return backing_.get(); }
void* memory() const { return memory_; }
size_t size() const { return size_; }
friend class base::RefCountedThreadSafe<Buffer>;
~Buffer();
- scoped_ptr<base::SharedMemory> shared_memory_;
+ scoped_ptr<BufferBacking> backing_;
void* memory_;
size_t size_;
DISALLOW_COPY_AND_ASSIGN(Buffer);
};
+static inline scoped_ptr<BufferBacking> MakeBackingFromSharedMemory(
+ scoped_ptr<base::SharedMemory> shared_memory,
+ size_t size) {
+ return scoped_ptr<BufferBacking>(
+ new SharedMemoryBufferBacking(shared_memory.Pass(), size));
+}
+
+static inline scoped_refptr<Buffer> MakeBufferFromSharedMemory(
+ scoped_ptr<base::SharedMemory> shared_memory,
+ size_t size) {
+ return new Buffer(MakeBackingFromSharedMemory(shared_memory.Pass(), size));
+}
+
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_COMMON_BUFFER_H_