threads: implement support for pthread mutexes (#315)

[wasi-libc.git] / libc-top-half / musl / src / thread / pthread_mutex_timedlock.c

diff --git a/libc-top-half/musl/src/thread/pthread_mutex_timedlock.c b/libc-top-half/musl/src/thread/pthread_mutex_timedlock.c
index 9279fc54308ad6d8b1e1b6ada6ffb32f91c1fa15..d22196a55a153bf24f6f2ca6da3f3461379cf94a 100644 (file)
--- a/libc-top-half/musl/src/thread/pthread_mutex_timedlock.c
+++ b/libc-top-half/musl/src/thread/pthread_mutex_timedlock.c
@@ -1,5 +1,6 @@
 #include "pthread_impl.h"
 
+#ifdef __wasilibc_unmodified_upstream
 #define IS32BIT(x) !((x)+0x80000000ULL>>32)
 #define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63))
 
@@ -52,6 +53,7 @@ static int pthread_mutex_timedlock_pi(pthread_mutex_t *restrict m, const struct
        while (e != ETIMEDOUT);
        return e;
 }
+#endif
 
 int __pthread_mutex_timedlock(pthread_mutex_t *restrict m, const struct timespec *restrict at)
 {
@@ -65,8 +67,10 @@ int __pthread_mutex_timedlock(pthread_mutex_t *restrict m, const struct timespec
        r = __pthread_mutex_trylock(m);
        if (r != EBUSY) return r;
 
+#ifdef __wasilibc_unmodified_upstream
        if (type&8) return pthread_mutex_timedlock_pi(m, at);
-       
+#endif
+
        int spins = 100;
        while (spins-- && m->_m_lock && !m->_m_waiters) a_spin();