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-rw-r--r--src/thread/__timedwait.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/src/thread/__timedwait.c b/src/thread/__timedwait.c
new file mode 100644
index 00000000..354def2c
--- /dev/null
+++ b/src/thread/__timedwait.c
@@ -0,0 +1,21 @@
+#include <time.h>
+#include <errno.h>
+#include "futex.h"
+#define SYSCALL_RETURN_ERRNO
+#include "syscall.h"
+#include <stdio.h>
+int __timedwait(volatile int *addr, int val, clockid_t clk, const struct timespec *at, int priv)
+{
+ struct timespec to;
+ if (at) {
+ clock_gettime(clk, &to);
+ to.tv_sec = at->tv_sec - to.tv_sec;
+ if ((to.tv_nsec = at->tv_nsec - to.tv_nsec) < 0) {
+ to.tv_sec--;
+ to.tv_nsec += 1000000000;
+ }
+ if (to.tv_sec < 0) return ETIMEDOUT;
+ }
+ if (priv) priv = 128; priv=0;
+ return syscall4(__NR_futex, (long)addr, FUTEX_WAIT | priv, val, at ? (long)&to : 0);
+}