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authorGravatar Nikias Bassen2021-06-20 01:56:35 +0200
committerGravatar Nikias Bassen2021-06-20 01:56:35 +0200
commitcb50087482cf5a4239ad9c96b7157c45eac12876 (patch)
tree1d60de827e4d9c08d7f51f16480d4583ee45ad25 /src/thread.c
parenteb787a10f06e4470134cff33a81bb872e4268bfa (diff)
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thread: Add condition variable support
Diffstat (limited to 'src/thread.c')
-rw-r--r--src/thread.c75
1 files changed, 75 insertions, 0 deletions
diff --git a/src/thread.c b/src/thread.c
index eb535ab..796ea0b 100644
--- a/src/thread.c
+++ b/src/thread.c
@@ -67,6 +67,8 @@ int thread_join(THREAD_T thread)
int thread_alive(THREAD_T thread)
{
+ if (!thread)
+ return 0;
#ifdef WIN32
return WaitForSingleObject(thread, 0) == WAIT_TIMEOUT;
#else
@@ -138,3 +140,76 @@ void thread_once(thread_once_t *once_control, void (*init_routine)(void))
pthread_once(once_control, init_routine);
#endif
}
+
+void cond_init(cond_t* cond)
+{
+#ifdef WIN32
+ cond->sem = CreateSemaphore(NULL, 0, 32767, NULL);
+#else
+ pthread_cond_init(cond, NULL);
+#endif
+}
+
+void cond_destroy(cond_t* cond)
+{
+#ifdef WIN32
+ CloseHandle(cond->sem);
+#else
+ pthread_cond_destroy(cond);
+#endif
+}
+
+int cond_signal(cond_t* cond)
+{
+#ifdef WIN32
+ int result = 0;
+ if (!ReleaseSemaphore(cond->sem, 1, NULL)) {
+ result = -1;
+ }
+ return result;
+#else
+ return pthread_cond_signal(cond);
+#endif
+}
+
+int cond_wait(cond_t* cond, mutex_t* mutex)
+{
+#ifdef WIN32
+ mutex_unlock(mutex);
+ DWORD res = WaitForSingleObject(cond->sem, INFINITE);
+ switch (res) {
+ case WAIT_OBJECT_0:
+ return 0;
+ default:
+ return -1;
+ }
+#else
+ return pthread_cond_wait(cond, mutex);
+#endif
+}
+
+int cond_wait_timeout(cond_t* cond, mutex_t* mutex, unsigned int timeout_ms)
+{
+#ifdef WIN32
+ mutex_unlock(mutex);
+ DWORD res = WaitForSingleObject(cond->sem, timeout_ms);
+ switch (res) {
+ case WAIT_OBJECT_0:
+ case WAIT_TIMEOUT:
+ return 0;
+ default:
+ return -1;
+ }
+#else
+ struct timespec ts;
+ struct timeval now;
+ gettimeofday(&now, NULL);
+
+ ts.tv_sec = now.tv_sec + timeout_ms / 1000;
+ ts.tv_nsec = now.tv_usec * 1000 + 1000 * 1000 * (timeout_ms % 1000);
+ ts.tv_sec += ts.tv_nsec / (1000 * 1000 * 1000);
+ ts.tv_nsec %= (1000 * 1000 * 1000);
+
+ return pthread_cond_timedwait(cond, mutex, &ts);
+#endif
+}