LibC: Rewrite pthread_mutex

pthread_mutex is now an actual "sleeping" mutex, and not just a
spinlock! It still has a fast path that only uses atomics and (in the
successful case) returns immediately without sleeping. In case of
contention, it calls futex_wait(), which lets the kernel scheduler put
this thread to sleep, *and* lets it know exactly when to consider
scheduling it again.

1 files changed, 1 insertions, 1 deletions

diff --git a/Userland/Libraries/LibC/bits/pthread_integration.h b/Userland/Libraries/LibC/bits/pthread_integration.h
index 39af9e4d14..b74462afd2 100644
--- a/Userland/Libraries/LibC/bits/pthread_integration.h
+++ b/Userland/Libraries/LibC/bits/pthread_integration.h
@@ -18,10 +18,10 @@ void __pthread_fork_atfork_register_prepare(void (*)(void));
 void __pthread_fork_atfork_register_parent(void (*)(void));
 void __pthread_fork_atfork_register_child(void (*)(void));
 
+int __pthread_mutex_init(pthread_mutex_t*, const pthread_mutexattr_t*);
 int __pthread_mutex_lock(pthread_mutex_t*);
 int __pthread_mutex_trylock(pthread_mutex_t*);
 int __pthread_mutex_unlock(pthread_mutex_t*);
-int __pthread_mutex_init(pthread_mutex_t*, const pthread_mutexattr_t*);
 
 typedef void (*KeyDestructor)(void*);