Implement condition variables (POSIX only!)

Windows requires Vista or newer to get the CONDITION_VARIABNLE API, but we
currently only require XP.

1 files changed, 11 insertions, 0 deletions

diff --git a/include/threads.h b/include/threads.h
index 40f523fa..8b633f33 100644
--- a/include/threads.h
+++ b/include/threads.h
@@ -113,12 +113,23 @@ inline int altss_set(altss_t tss_id, void *val)
 
 typedef pthread_t althrd_t;
 typedef pthread_mutex_t almtx_t;
+typedef pthread_cond_t alcnd_t;
 typedef pthread_key_t altss_t;
 typedef pthread_once_t alonce_flag;
 
 #define AL_ONCE_FLAG_INIT PTHREAD_ONCE_INIT
 
 
+/* NOTE: Condition variables are POSIX-only at the moment, as Windows requires
+ * Vista or newer for them (without slow, hacky work-arounds). */
+int alcnd_init(alcnd_t *cond);
+int alcnd_signal(alcnd_t *cond);
+int alcnd_broadcast(alcnd_t *cond);
+int alcnd_wait(alcnd_t *cond, almtx_t *mtx);
+int alcnd_timedwait(alcnd_t *cond, almtx_t *mtx, const struct timespec *time_point);
+void alcnd_destroy(alcnd_t *cond);
+
+
 inline althrd_t althrd_current(void)
 {
     return pthread_self();