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Unified Diff: fusl/src/thread/pthread_mutex_trylock.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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Index: fusl/src/thread/pthread_mutex_trylock.c
diff --git a/fusl/src/thread/pthread_mutex_trylock.c b/fusl/src/thread/pthread_mutex_trylock.c
index 0df3ce2982ff85d2161ba1e0742e75c73c023a7b..bcb4913838220a5be88e9f4cadb40b3a8120fe8f 100644
--- a/fusl/src/thread/pthread_mutex_trylock.c
+++ b/fusl/src/thread/pthread_mutex_trylock.c
@@ -1,58 +1,59 @@
#include "pthread_impl.h"
-int __pthread_mutex_trylock_owner(pthread_mutex_t *m)
-{
- int old, own;
- int type = m->_m_type & 15;
- pthread_t self = __pthread_self();
- int tid = self->tid;
-
- old = m->_m_lock;
- own = old & 0x7fffffff;
- if (own == tid && (type&3) == PTHREAD_MUTEX_RECURSIVE) {
- if ((unsigned)m->_m_count >= INT_MAX) return EAGAIN;
- m->_m_count++;
- return 0;
- }
- if (own == 0x40000000) return ENOTRECOVERABLE;
-
- if (m->_m_type & 128) {
- if (!self->robust_list.off) {
- self->robust_list.off = (char*)&m->_m_lock-(char *)&m->_m_next;
- __syscall(SYS_set_robust_list, &self->robust_list, 3*sizeof(long));
- }
- if (m->_m_waiters) tid |= 0x80000000;
- self->robust_list.pending = &m->_m_next;
- }
-
- if ((own && (!(own & 0x40000000) || !(type & 4)))
- || a_cas(&m->_m_lock, old, tid) != old) {
- self->robust_list.pending = 0;
- return EBUSY;
- }
-
- volatile void *next = self->robust_list.head;
- m->_m_next = next;
- m->_m_prev = &self->robust_list.head;
- if (next != &self->robust_list.head) *(volatile void *volatile *)
- ((char *)next - sizeof(void *)) = &m->_m_next;
- self->robust_list.head = &m->_m_next;
- self->robust_list.pending = 0;
-
- if (own) {
- m->_m_count = 0;
- m->_m_type |= 8;
- return EOWNERDEAD;
- }
-
- return 0;
+int __pthread_mutex_trylock_owner(pthread_mutex_t* m) {
+ int old, own;
+ int type = m->_m_type & 15;
+ pthread_t self = __pthread_self();
+ int tid = self->tid;
+
+ old = m->_m_lock;
+ own = old & 0x7fffffff;
+ if (own == tid && (type & 3) == PTHREAD_MUTEX_RECURSIVE) {
+ if ((unsigned)m->_m_count >= INT_MAX)
+ return EAGAIN;
+ m->_m_count++;
+ return 0;
+ }
+ if (own == 0x40000000)
+ return ENOTRECOVERABLE;
+
+ if (m->_m_type & 128) {
+ if (!self->robust_list.off) {
+ self->robust_list.off = (char*)&m->_m_lock - (char*)&m->_m_next;
+ __syscall(SYS_set_robust_list, &self->robust_list, 3 * sizeof(long));
+ }
+ if (m->_m_waiters)
+ tid |= 0x80000000;
+ self->robust_list.pending = &m->_m_next;
+ }
+
+ if ((own && (!(own & 0x40000000) || !(type & 4))) ||
+ a_cas(&m->_m_lock, old, tid) != old) {
+ self->robust_list.pending = 0;
+ return EBUSY;
+ }
+
+ volatile void* next = self->robust_list.head;
+ m->_m_next = next;
+ m->_m_prev = &self->robust_list.head;
+ if (next != &self->robust_list.head)
+ *(volatile void* volatile*)((char*)next - sizeof(void*)) = &m->_m_next;
+ self->robust_list.head = &m->_m_next;
+ self->robust_list.pending = 0;
+
+ if (own) {
+ m->_m_count = 0;
+ m->_m_type |= 8;
+ return EOWNERDEAD;
+ }
+
+ return 0;
}
-int __pthread_mutex_trylock(pthread_mutex_t *m)
-{
- if ((m->_m_type&15) == PTHREAD_MUTEX_NORMAL)
- return a_cas(&m->_m_lock, 0, EBUSY) & EBUSY;
- return __pthread_mutex_trylock_owner(m);
+int __pthread_mutex_trylock(pthread_mutex_t* m) {
+ if ((m->_m_type & 15) == PTHREAD_MUTEX_NORMAL)
+ return a_cas(&m->_m_lock, 0, EBUSY) & EBUSY;
+ return __pthread_mutex_trylock_owner(m);
}
weak_alias(__pthread_mutex_trylock, pthread_mutex_trylock);

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