1 files changed, 25 insertions, 0 deletions
diff --git a/lib/libc/thread/thrd_exit.c b/lib/libc/thread/thrd_exit.c
new file mode 100644
index 00000000..9ba1f54a
--- /dev/null
+++ b/lib/libc/thread/thrd_exit.c
@@ -0,0 +1,25 @@
+#include <__thread.h>
+#include <libc/futex.h>
+#include <stdatomic.h>
+#include <sys/mman.h>
+#include <threads.h>
+#include <unistd.h>
+
+_Noreturn void thrd_exit(int res)
+{
+	struct __thread_self *self = thrd_current();
+
+	self->res = res;
+
+	int state = atomic_load_explicit((int *)&self->state, memory_order_seq_cst);
+	if (state == THREAD_STATE_DETACHED) {
+		if (self->map_base && self->map_size)
+			munmap(self->map_base, self->map_size);
+		_exit(0);
+	}
+
+	atomic_store_explicit(&self->state, THREAD_STATE_EXITED, memory_order_seq_cst);
+	__futex_wake(&self->state, 1);
+
+	_exit(0);
+}