Last change
on this file since 413 was 398, checked in by coas-nagasima, 5 years ago |
mbedTLS版Azure IoT Hub接続サンプルのソースコードを追加
|
-
Property svn:eol-style
set to
native
-
Property svn:mime-type
set to
text/x-csrc;charset=UTF-8
|
File size:
634 bytes
|
Rev | Line | |
---|
[398] | 1 | #include <semaphore.h>
|
---|
| 2 | #include "pthread_impl.h"
|
---|
| 3 |
|
---|
| 4 | static void cleanup(void *p)
|
---|
| 5 | {
|
---|
| 6 | a_dec(p);
|
---|
| 7 | }
|
---|
| 8 |
|
---|
| 9 | int sem_timedwait(sem_t *restrict sem, const struct timespec *restrict at)
|
---|
| 10 | {
|
---|
| 11 | pthread_testcancel();
|
---|
| 12 |
|
---|
| 13 | if (!sem_trywait(sem)) return 0;
|
---|
| 14 |
|
---|
| 15 | int spins = 100;
|
---|
| 16 | while (spins-- && sem->__val[0] <= 0 && !sem->__val[1]) a_spin();
|
---|
| 17 |
|
---|
| 18 | while (sem_trywait(sem)) {
|
---|
| 19 | int r;
|
---|
| 20 | a_inc(sem->__val+1);
|
---|
| 21 | a_cas(sem->__val, 0, -1);
|
---|
| 22 | pthread_cleanup_push(cleanup, (void *)(sem->__val+1));
|
---|
| 23 | r = __timedwait_cp(sem->__val, -1, CLOCK_REALTIME, at, sem->__val[2]);
|
---|
| 24 | pthread_cleanup_pop(1);
|
---|
| 25 | if (r && r != EINTR) {
|
---|
| 26 | errno = r;
|
---|
| 27 | return -1;
|
---|
| 28 | }
|
---|
| 29 | }
|
---|
| 30 | return 0;
|
---|
| 31 | }
|
---|
Note:
See
TracBrowser
for help on using the repository browser.