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);
+}