1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "gpu/command_buffer/client/buffer_tracker.h" 6 7 #include "gpu/command_buffer/client/atomicops.h" 8 #include "gpu/command_buffer/client/cmd_buffer_helper.h" 9 #include "gpu/command_buffer/client/mapped_memory.h" 10 11 namespace gpu { 12 namespace gles2 { 13 14 BufferTracker::BufferTracker(MappedMemoryManager* manager) 15 : mapped_memory_(manager) { 16 } 17 18 BufferTracker::~BufferTracker() { 19 while (!buffers_.empty()) { 20 RemoveBuffer(buffers_.begin()->first); 21 } 22 } 23 24 BufferTracker::Buffer* BufferTracker::CreateBuffer( 25 GLuint id, GLsizeiptr size) { 26 GPU_DCHECK_NE(0u, id); 27 GPU_DCHECK_LE(0, size); 28 int32 shm_id = -1; 29 uint32 shm_offset = 0; 30 void* address = NULL; 31 if (size) 32 address = mapped_memory_->Alloc(size, &shm_id, &shm_offset); 33 34 Buffer* buffer = new Buffer(id, size, shm_id, shm_offset, address); 35 std::pair<BufferMap::iterator, bool> result = 36 buffers_.insert(std::make_pair(id, buffer)); 37 GPU_DCHECK(result.second); 38 return buffer; 39 } 40 41 BufferTracker::Buffer* BufferTracker::GetBuffer(GLuint client_id) { 42 BufferMap::iterator it = buffers_.find(client_id); 43 return it != buffers_.end() ? it->second : NULL; 44 } 45 46 void BufferTracker::RemoveBuffer(GLuint client_id) { 47 BufferMap::iterator it = buffers_.find(client_id); 48 if (it != buffers_.end()) { 49 Buffer* buffer = it->second; 50 buffers_.erase(it); 51 if (buffer->address_) 52 mapped_memory_->Free(buffer->address_); 53 delete buffer; 54 } 55 } 56 57 void BufferTracker::FreePendingToken(Buffer* buffer, int32 token) { 58 if (buffer->address_) 59 mapped_memory_->FreePendingToken(buffer->address_, token); 60 buffer->size_ = 0; 61 buffer->shm_id_ = 0; 62 buffer->shm_offset_ = 0; 63 buffer->address_ = NULL; 64 } 65 66 67 } // namespace gles2 68 } // namespace gpu 69
