1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
// 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 "gpu/command_buffer/client/cmd_buffer_helper.h"
#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 shm_id = -1;
uint32 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 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
|
