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use weak symbols for the POSIX functions that will be used by C threads
[musl]
/
src
/
thread
/
pthread_mutex_timedlock.c
diff --git
a/src/thread/pthread_mutex_timedlock.c
b/src/thread/pthread_mutex_timedlock.c
index
44bd4bb
..
16241ee
100644
(file)
--- a/
src/thread/pthread_mutex_timedlock.c
+++ b/
src/thread/pthread_mutex_timedlock.c
@@
-1,24
+1,34
@@
#include "pthread_impl.h"
#include "pthread_impl.h"
-int
pthread_mutex_timedlock(pthread_mutex_t *m, const struct timespec *
at)
+int
__pthread_mutex_timedlock(pthread_mutex_t *restrict m, const struct timespec *restrict
at)
{
{
- int r, t;
-
- if (m->_m_type == PTHREAD_MUTEX_NORMAL && !a_cas(&m->_m_lock, 0, EBUSY))
+ if ((m->_m_type&15) == PTHREAD_MUTEX_NORMAL
+ && !a_cas(&m->_m_lock, 0, EBUSY))
return 0;
return 0;
+ int r, t, priv = (m->_m_type & 128) ^ 128;
+
+ r = pthread_mutex_trylock(m);
+ if (r != EBUSY) return r;
+
+ int spins = 100;
+ while (spins-- && m->_m_lock && !m->_m_waiters) a_spin();
+
while ((r=pthread_mutex_trylock(m)) == EBUSY) {
while ((r=pthread_mutex_trylock(m)) == EBUSY) {
- if (!(r=m->_m_lock) || (r&0x40000000)) continue;
+ if (!(r=m->_m_lock) || ((r&0x40000000) && (m->_m_type&4)))
+ continue;
if ((m->_m_type&3) == PTHREAD_MUTEX_ERRORCHECK
if ((m->_m_type&3) == PTHREAD_MUTEX_ERRORCHECK
- && (r&0x
1fffffff) ==
pthread_self()->tid)
+ && (r&0x
7fffffff) == __
pthread_self()->tid)
return EDEADLK;
a_inc(&m->_m_waiters);
t = r | 0x80000000;
a_cas(&m->_m_lock, r, t);
return EDEADLK;
a_inc(&m->_m_waiters);
t = r | 0x80000000;
a_cas(&m->_m_lock, r, t);
- r = __timedwait(&m->_m_lock, t, CLOCK_REALTIME, at, 0, 0,
0
);
+ r = __timedwait(&m->_m_lock, t, CLOCK_REALTIME, at, 0, 0,
priv
);
a_dec(&m->_m_waiters);
if (r && r != EINTR) break;
}
return r;
}
a_dec(&m->_m_waiters);
if (r && r != EINTR) break;
}
return r;
}
+
+weak_alias(__pthread_mutex_timedlock, pthread_mutex_timedlock);