From c412f7daf6f4bc31aa727dbafc8b379bd265604c Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Sun, 16 Jun 2013 22:56:24 +0200
Subject: cache: fix build on OSX (again)

OSX doesn't support the POSIX API we were using.

We check for _POSIX_TIMERS. 0 or -1 means unsupported. See:
http://pubs.opengroup.org/onlinepubs/009696699/functions/clock_getres.html
http://pubs.opengroup.org/onlinepubs/009696699/basedefs/unistd.h.html

The workaround of using gettimeofday() is suggested by Apple:
https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man3/pthread_cond_timedwait.3.html

Thanks to AStorm for providing help here.
---
 stream/cache.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'stream/cache.c')

diff --git a/stream/cache.c b/stream/cache.c
index 5a34447701..1981cb58be 100644
--- a/stream/cache.c
+++ b/stream/cache.c
@@ -131,7 +131,14 @@ static int cond_timed_wait(pthread_cond_t *cond, pthread_mutex_t *mutex,
                            double timeout)
 {
     struct timespec ts;
+#if _POSIX_TIMERS > 0
     clock_gettime(CLOCK_REALTIME, &ts);
+#else
+    struct timeval tv;
+    gettimeofday(&tv, NULL);
+    ts.tv_sec = tv.tv_sec;
+    ts.tv_nsec = tv.tv_usec * 1000UL;
+#endif
     unsigned long seconds = (int)timeout;
     unsigned long nsecs = (timeout - seconds) * 1000000000UL;
     if (nsecs + ts.tv_nsec >= 1000000000UL) {
-- 
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