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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "BufferMapper"
#include <stdint.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <utils/Errors.h>
#include <utils/threads.h>
#include <utils/Log.h>
#include <ui/BufferMapper.h>
#include <ui/Rect.h>
#include <EGL/android_natives.h>
#include <hardware/gralloc.h>
// ---------------------------------------------------------------------------
// enable mapping debugging
#define DEBUG_MAPPINGS 0
// never remove mappings from the list
#define DEBUG_MAPPINGS_KEEP_ALL 0
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
template<class BufferMapper> Mutex Singleton<BufferMapper>::sLock;
template<> BufferMapper* Singleton<BufferMapper>::sInstance(0);
BufferMapper::BufferMapper()
: mAllocMod(0)
{
hw_module_t const* module;
int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module);
LOGE_IF(err, "FATAL: can't find the %s module", GRALLOC_HARDWARE_MODULE_ID);
if (err == 0) {
mAllocMod = (gralloc_module_t const *)module;
}
}
status_t BufferMapper::map(buffer_handle_t handle, void** addr, const void* id)
{
Mutex::Autolock _l(mLock);
status_t err = mAllocMod->map(mAllocMod, handle, addr);
LOGW_IF(err, "map(...) failed %d (%s)", err, strerror(-err));
#if DEBUG_MAPPINGS
if (err == NO_ERROR)
logMapLocked(handle, id);
#endif
return err;
}
status_t BufferMapper::unmap(buffer_handle_t handle, const void* id)
{
Mutex::Autolock _l(mLock);
status_t err = mAllocMod->unmap(mAllocMod, handle);
LOGW_IF(err, "unmap(...) failed %d (%s)", err, strerror(-err));
#if DEBUG_MAPPINGS
if (err == NO_ERROR)
logUnmapLocked(handle, id);
#endif
return err;
}
status_t BufferMapper::lock(buffer_handle_t handle, int usage, const Rect& bounds)
{
status_t err = mAllocMod->lock(mAllocMod, handle, usage,
bounds.left, bounds.top, bounds.width(), bounds.height());
LOGW_IF(err, "unlock(...) failed %d (%s)", err, strerror(-err));
return err;
}
status_t BufferMapper::unlock(buffer_handle_t handle)
{
status_t err = mAllocMod->unlock(mAllocMod, handle);
LOGW_IF(err, "unlock(...) failed %d (%s)", err, strerror(-err));
return err;
}
void BufferMapper::logMapLocked(buffer_handle_t handle, const void* id)
{
CallStack stack;
stack.update(2);
map_info_t info;
info.id = id;
info.stack = stack;
ssize_t index = mMapInfo.indexOfKey(handle);
if (index >= 0) {
Vector<map_info_t>& infos = mMapInfo.editValueAt(index);
infos.add(info);
} else {
Vector<map_info_t> infos;
infos.add(info);
mMapInfo.add(handle, infos);
}
}
void BufferMapper::logUnmapLocked(buffer_handle_t handle, const void* id)
{
ssize_t index = mMapInfo.indexOfKey(handle);
if (index < 0) {
LOGE("unmapping %p which doesn't exist in our map!", handle);
return;
}
Vector<map_info_t>& infos = mMapInfo.editValueAt(index);
ssize_t count = infos.size();
for (int i=0 ; i<count ; ) {
if (infos[i].id == id) {
infos.removeAt(i);
--count;
} else {
++i;
}
}
if (count == 0) {
mMapInfo.removeItemsAt(index, 1);
}
}
void BufferMapper::dump(buffer_handle_t handle)
{
Mutex::Autolock _l(mLock);
ssize_t index = mMapInfo.indexOfKey(handle);
if (index < 0) {
LOGD("handle %p is not mapped through BufferMapper", handle);
return;
}
const Vector<map_info_t>& infos = mMapInfo.valueAt(index);
ssize_t count = infos.size();
for (int i=0 ; i<count ; i++) {
LOGD("#%d", i);
infos[i].stack.dump();
}
}
// ---------------------------------------------------------------------------
}; // namespace android
|
