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math: new powf
[musl]
/
src
/
thread
/
pthread_mutexattr_setrobust.c
diff --git
a/src/thread/pthread_mutexattr_setrobust.c
b/src/thread/pthread_mutexattr_setrobust.c
index
dcfa4cf
..
04db92a
100644
(file)
--- a/
src/thread/pthread_mutexattr_setrobust.c
+++ b/
src/thread/pthread_mutexattr_setrobust.c
@@
-1,9
+1,25
@@
#include "pthread_impl.h"
#include "pthread_impl.h"
+#include "syscall.h"
+
+static pthread_once_t check_robust_once;
+static int check_robust_result;
+
+static void check_robust()
+{
+ void *p;
+ size_t l;
+ check_robust_result = -__syscall(SYS_get_robust_list, 0, &p, &l);
+}
int pthread_mutexattr_setrobust(pthread_mutexattr_t *a, int robust)
{
if (robust > 1U) return EINVAL;
int pthread_mutexattr_setrobust(pthread_mutexattr_t *a, int robust)
{
if (robust > 1U) return EINVAL;
+ if (robust) {
+ pthread_once(&check_robust_once, check_robust);
+ if (check_robust_result) return check_robust_result;
+ a->__attr |= 4;
+ return 0;
+ }
a->__attr &= ~4;
a->__attr &= ~4;
- a->__attr |= robust*4;
return 0;
}
return 0;
}