From 0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sat, 12 Feb 2011 00:22:29 -0500 Subject: initial check-in, version 0.5.0 --- src/thread/__timedwait.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 src/thread/__timedwait.c (limited to 'src/thread/__timedwait.c') 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 +#include +#include "futex.h" +#define SYSCALL_RETURN_ERRNO +#include "syscall.h" +#include +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); +} -- cgit v1.2.1