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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
/* SPDX-License-Identifier: MIT */
#include "syncobject.hpp"
#include "priv/ioctl.hpp"
#include <cstdint>
#include <optional>
#include <stdexcept>
#include <vector>
#include <unistd.h>
using namespace drm;
SyncObject::SyncObject(int fd, bool signal) : m_fd(fd) {
drm_syncobj_create args{
.flags = signal ? DRM_SYNCOBJ_CREATE_SIGNALED : 0U
};
ioctl::perform(this->m_fd, DRM_IOCTL_SYNCOBJ_CREATE, args);
this->m_handle = args.handle;
}
SyncObject::SyncObject(int fd, int syncobj_fd, bool close) : m_fd(fd) {
try {
drm_syncobj_handle args{
.fd = syncobj_fd
};
ioctl::perform(this->m_fd, DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE, args);
this->m_handle = args.handle;
} catch (...) {
if (close) {
::close(syncobj_fd);
}
throw;
}
if (close) {
::close(syncobj_fd);
}
}
int SyncObject::exportFd() const {
drm_syncobj_handle args{
.handle = this->m_handle,
};
ioctl::perform(this->m_fd, DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD, args);
return args.fd;
}
void SyncObject::importSyncFile(int syncfile_fd, uint64_t point, bool close) const {
try {
drm_syncobj_handle args{
.handle = this->m_handle,
.flags = DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE,
.fd = syncfile_fd,
.point = point
};
ioctl::perform(this->m_fd, DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE, args);
} catch (...) {
if (close) {
::close(syncfile_fd);
}
throw;
}
if (close) {
::close(syncfile_fd);
}
}
int SyncObject::exportSyncFile(uint64_t point) const {
drm_syncobj_handle args{
.handle = this->m_handle,
.flags = DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE,
.point = point
};
ioctl::perform(this->m_fd, DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD, args);
return args.fd;
}
void SyncObject::registerEventFd(int eventfd_fd, uint64_t point, bool waitAvailable) const {
drm_syncobj_eventfd args{
.handle = this->m_handle,
.flags = waitAvailable ? DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE : 0U,
.point = point,
.fd = eventfd_fd
};
ioctl::perform(this->m_fd, DRM_IOCTL_SYNCOBJ_EVENTFD, args);
}
void SyncObject::transfer(uint32_t dstObject, uint64_t srcPoint, uint64_t dstPoint) const {
drm_syncobj_transfer args{
.src_handle = this->m_handle,
.dst_handle = dstObject,
.src_point = srcPoint,
.dst_point = dstPoint
};
ioctl::perform(this->m_fd, DRM_IOCTL_SYNCOBJ_TRANSFER, args);
}
void SyncObject::signal(
int fd,
const std::vector<uint32_t>& objects,
const std::vector<uint64_t>& points
) {
if (objects.empty()) {
return;
}
if (points.empty()) {
drm_syncobj_array args{
.handles = reinterpret_cast<uint64_t>(objects.data()),
.count_handles = static_cast<uint32_t>(objects.size())
};
ioctl::perform(fd, DRM_IOCTL_SYNCOBJ_SIGNAL, args);
}
if (points.size() != objects.size()) {
throw std::invalid_argument("points size must match objects size");
}
drm_syncobj_timeline_array args{
.handles = reinterpret_cast<uint64_t>(objects.data()),
.points = reinterpret_cast<uint64_t>(points.data()),
.count_handles = static_cast<uint32_t>(objects.size())
};
ioctl::perform(fd, DRM_IOCTL_SYNCOBJ_TIMELINE_SIGNAL, args);
}
void SyncObject::reset(int fd, const std::vector<uint32_t>& objects) {
if (objects.empty()) {
return;
}
drm_syncobj_array args{
.handles = reinterpret_cast<uint64_t>(objects.data()),
.count_handles = static_cast<uint32_t>(objects.size())
};
ioctl::perform(fd, DRM_IOCTL_SYNCOBJ_RESET, args);
}
uint32_t SyncObject::wait(
int fd,
const std::vector<uint32_t>& objects,
const std::vector<uint64_t>& points,
int64_t timeout,
bool waitAll,
bool waitEmpty,
bool waitAvailable,
std::optional<uint64_t> deadlineHint
) {
if (objects.empty()) {
return 0;
}
if (waitAvailable) {
waitEmpty = false;
}
if (points.empty()) {
drm_syncobj_wait args{
.handles = reinterpret_cast<uint64_t>(objects.data()),
.timeout_nsec = timeout,
.count_handles = static_cast<uint32_t>(objects.size()),
.flags =
(waitAll ? DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL : 0U) |
(waitEmpty ? DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT : 0U) |
(waitAvailable ? DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE : 0U) |
(deadlineHint.has_value() ? DRM_SYNCOBJ_WAIT_FLAGS_WAIT_DEADLINE : 0U),
.deadline_nsec = deadlineHint.value_or(0)
};
ioctl::perform(fd, DRM_IOCTL_SYNCOBJ_WAIT, args);
return args.first_signaled;
}
if (points.size() != objects.size()) {
throw std::invalid_argument("points size must match objects size");
}
drm_syncobj_timeline_wait args{
.handles = reinterpret_cast<uint64_t>(objects.data()),
.points = reinterpret_cast<uint64_t>(points.data()),
.timeout_nsec = timeout,
.count_handles = static_cast<uint32_t>(objects.size()),
.flags =
(waitAll ? DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL : 0U) |
(waitEmpty ? DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT : 0U) |
(waitAvailable ? DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE : 0U) |
(deadlineHint.has_value() ? DRM_SYNCOBJ_WAIT_FLAGS_WAIT_DEADLINE : 0U),
.deadline_nsec = deadlineHint.value_or(0)
};
ioctl::perform(fd, DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT, args);
return args.first_signaled;
}
std::vector<uint64_t> SyncObject::query(
int fd,
const std::vector<uint32_t>& objects,
bool lastSubmitted
) {
if (objects.empty()) {
return {};
}
std::vector<uint64_t> points(objects.size());
drm_syncobj_timeline_array args{
.handles = reinterpret_cast<uint64_t>(objects.data()),
.points = reinterpret_cast<uint64_t>(points.data()),
.count_handles = static_cast<uint32_t>(objects.size()),
.flags = lastSubmitted ? DRM_SYNCOBJ_QUERY_FLAGS_LAST_SUBMITTED : 0U
};
ioctl::perform(fd, DRM_IOCTL_SYNCOBJ_QUERY, args);
return points;
}
void SyncObject::destruct() noexcept {
if (this->m_fd < 0) {
return;
}
drm_syncobj_destroy args{
.handle = this->m_handle
};
try {
ioctl::perform(this->m_fd, DRM_IOCTL_SYNCOBJ_DESTROY, args);
} catch(...) {
(void) 0; // not much we can do about the leak
}
this->m_fd = -1;
}
|
