1 files changed, 82 insertions, 0 deletions
diff --git a/executor/executor_posix.h b/executor/executor_posix.h
new file mode 100644
index 000000000..e9b06b807
--- /dev/null
+++ b/executor/executor_posix.h
@@ -0,0 +1,82 @@
+// Copyright 2017 syzkaller project authors. All rights reserved.
+// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
+
+#include <pthread.h>
+
+typedef pthread_t osthread_t;
+
+void thread_start(osthread_t* t, void* (*fn)(void*), void* arg)
+{
+	pthread_attr_t attr;
+	pthread_attr_init(&attr);
+	pthread_attr_setstacksize(&attr, 128 << 10);
+	if (pthread_create(t, &attr, fn, arg))
+		exitf("pthread_create failed");
+	pthread_attr_destroy(&attr);
+}
+
+struct event_t {
+	pthread_mutex_t mu;
+	pthread_cond_t cv;
+	bool state;
+};
+
+void event_init(event_t* ev)
+{
+	if (pthread_mutex_init(&ev->mu, 0))
+		fail("pthread_mutex_init failed");
+	if (pthread_cond_init(&ev->cv, 0))
+		fail("pthread_cond_init failed");
+	ev->state = false;
+}
+
+void event_reset(event_t* ev)
+{
+	ev->state = false;
+}
+
+void event_set(event_t* ev)
+{
+	pthread_mutex_lock(&ev->mu);
+	if (ev->state)
+		fail("event already set");
+	ev->state = true;
+	pthread_mutex_unlock(&ev->mu);
+	pthread_cond_broadcast(&ev->cv);
+}
+
+void event_wait(event_t* ev)
+{
+	pthread_mutex_lock(&ev->mu);
+	while (!ev->state)
+		pthread_cond_wait(&ev->cv, &ev->mu);
+	pthread_mutex_unlock(&ev->mu);
+}
+
+bool event_isset(event_t* ev)
+{
+	pthread_mutex_lock(&ev->mu);
+	bool res = ev->state;
+	pthread_mutex_unlock(&ev->mu);
+	return res;
+}
+
+bool event_timedwait(event_t* ev, uint64_t timeout_ms)
+{
+	pthread_mutex_lock(&ev->mu);
+	uint64_t start = current_time_ms();
+	for (;;) {
+		if (ev->state)
+			break;
+		uint64_t now = current_time_ms();
+		if (now - start > timeout_ms)
+			break;
+		timespec ts;
+		ts.tv_sec = 0;
+		ts.tv_nsec = (timeout_ms - (now - start)) * 1000 * 1000;
+		pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
+	}
+	bool res = ev->state;
+	pthread_mutex_unlock(&ev->mu);
+	return res;
+}