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Side by Side Diff: fusl/src/thread/pthread_rwlock_timedwrlock.c

Issue 1714623002: [fusl] clang-format fusl (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: headers too Created 4 years, 10 months ago
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1 #include "pthread_impl.h" 1 #include "pthread_impl.h"
2 2
3 int pthread_rwlock_timedwrlock(pthread_rwlock_t *restrict rw, const struct times pec *restrict at) 3 int pthread_rwlock_timedwrlock(pthread_rwlock_t* restrict rw,
4 { 4 const struct timespec* restrict at) {
5 » int r, t; 5 int r, t;
6 »
7 » r = pthread_rwlock_trywrlock(rw);
8 » if (r != EBUSY) return r;
9 »
10 » int spins = 100;
11 » while (spins-- && rw->_rw_lock && !rw->_rw_waiters) a_spin();
12 6
13 » while ((r=pthread_rwlock_trywrlock(rw))==EBUSY) { 7 r = pthread_rwlock_trywrlock(rw);
14 » » if (!(r=rw->_rw_lock)) continue; 8 if (r != EBUSY)
15 » » t = r | 0x80000000; 9 return r;
16 » » a_inc(&rw->_rw_waiters); 10
17 » » a_cas(&rw->_rw_lock, r, t); 11 int spins = 100;
18 » » r = __timedwait(&rw->_rw_lock, t, CLOCK_REALTIME, at, rw->_rw_sh ared^128); 12 while (spins-- && rw->_rw_lock && !rw->_rw_waiters)
19 » » a_dec(&rw->_rw_waiters); 13 a_spin();
20 » » if (r && r != EINTR) return r; 14
21 » } 15 while ((r = pthread_rwlock_trywrlock(rw)) == EBUSY) {
22 » return r; 16 if (!(r = rw->_rw_lock))
17 continue;
18 t = r | 0x80000000;
19 a_inc(&rw->_rw_waiters);
20 a_cas(&rw->_rw_lock, r, t);
21 r = __timedwait(&rw->_rw_lock, t, CLOCK_REALTIME, at, rw->_rw_shared ^ 128);
22 a_dec(&rw->_rw_waiters);
23 if (r && r != EINTR)
24 return r;
25 }
26 return r;
23 } 27 }
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