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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.
#include "gpu/command_buffer/client/buffer_tracker.h"
#include <stdint.h>
#include <utility>
#include "gpu/command_buffer/client/mapped_memory.h"
namespace gpu {
namespace gles2 {
BufferTracker::BufferTracker(MappedMemoryManager* manager)
: mapped_memory_(manager) {
}
BufferTracker::~BufferTracker() {
while (!buffers_.empty()) {
RemoveBuffer(buffers_.begin()->first);
}
}
BufferTracker::Buffer* BufferTracker::CreateBuffer(
GLuint id, GLsizeiptr size) {
DCHECK_NE(0u, id);
DCHECK_LE(0, size);
int32_t shm_id = -1;
uint32_t shm_offset = 0;
void* address = NULL;
if (size)
address = mapped_memory_->Alloc(size, &shm_id, &shm_offset);
Buffer* buffer = new Buffer(id, size, shm_id, shm_offset, address);
std::pair<BufferMap::iterator, bool> result =
buffers_.insert(std::make_pair(id, buffer));
DCHECK(result.second);
return buffer;
}
BufferTracker::Buffer* BufferTracker::GetBuffer(GLuint client_id) {
BufferMap::iterator it = buffers_.find(client_id);
return it != buffers_.end() ? it->second : NULL;
}
void BufferTracker::RemoveBuffer(GLuint client_id) {
BufferMap::iterator it = buffers_.find(client_id);
if (it != buffers_.end()) {
Buffer* buffer = it->second;
buffers_.erase(it);
if (buffer->address_)
mapped_memory_->Free(buffer->address_);
delete buffer;
}
}
void BufferTracker::FreePendingToken(Buffer* buffer, int32_t token) {
if (buffer->address_)
mapped_memory_->FreePendingToken(buffer->address_, token);
buffer->size_ = 0;
buffer->shm_id_ = 0;
buffer->shm_offset_ = 0;
buffer->address_ = NULL;
buffer->last_usage_token_ = 0;
buffer->last_async_upload_token_ = 0;
}
void BufferTracker::Unmanage(Buffer* buffer) {
buffer->size_ = 0;
buffer->shm_id_ = 0;
buffer->shm_offset_ = 0;
buffer->address_ = NULL;
buffer->last_usage_token_ = 0;
buffer->last_async_upload_token_ = 0;
}
void BufferTracker::Free(Buffer* buffer) {
if (buffer->address_)
mapped_memory_->Free(buffer->address_);
buffer->size_ = 0;
buffer->shm_id_ = 0;
buffer->shm_offset_ = 0;
buffer->address_ = NULL;
buffer->last_usage_token_ = 0;
buffer->last_async_upload_token_ = 0;
}
} // namespace gles2
} // namespace gpu
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