threads: update for late C11 changes

C11 threads were changed to use struct timespec instead of xtime, and
thrd_sleep got a second argument.

See http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1554.htm and
http://en.cppreference.com/w/c/thread/{thrd_sleep,cnd_timedwait,mtx_timedlock}

Note that cnd_timedwait is spec'd to be relative to TIME_UTC / CLOCK_REALTIME.

v2: Fix Windows build errors. Tested with a default Appveyor config
    that uses Visual Studio 2013. Judging from Brian's email and
    random internet sources, Visual Studio 2015 does have timespec
    and timespec_get, hence the _MSC_VER-based guard which I have
    not tested.

Cc: Jose Fonseca <[email protected]>
Cc: Brian Paul <[email protected]>
Reviewed-by: Marek Olšák <[email protected]> (v1)

1 files changed, 13 insertions, 11 deletions

diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index b486be74873..9e0feea9869 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -3064,10 +3064,6 @@ dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
    struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
    unsigned wait_flags = 0;
 
-   /* timespecs for cnd_timedwait */
-   struct timespec current;
-   xtime expire;
-
    EGLint ret = EGL_CONDITION_SATISFIED_KHR;
 
    /* The EGL_KHR_fence_sync spec states:
@@ -3108,19 +3104,25 @@ dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
       } else {
          /* if reusable sync has not been yet signaled */
          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
+            /* timespecs for cnd_timedwait */
+            struct timespec current;
+            struct timespec expire;
+
+            /* We override the clock to monotonic when creating the condition
+             * variable. */
             clock_gettime(CLOCK_MONOTONIC, &current);
 
             /* calculating when to expire */
-            expire.nsec = timeout % 1000000000L;
-            expire.sec = timeout / 1000000000L;
+            expire.tv_nsec = timeout % 1000000000L;
+            expire.tv_sec = timeout / 1000000000L;
 
-            expire.nsec += current.tv_nsec;
-            expire.sec += current.tv_sec;
+            expire.tv_nsec += current.tv_nsec;
+            expire.tv_sec += current.tv_sec;
 
             /* expire.nsec now is a number between 0 and 1999999998 */
-            if (expire.nsec > 999999999L) {
-               expire.sec++;
-               expire.nsec -= 1000000000L;
+            if (expire.tv_nsec > 999999999L) {
+               expire.tv_sec++;
+               expire.tv_nsec -= 1000000000L;
             }
 
             mtx_lock(&dri2_sync->mutex);