1 files changed, 23 insertions, 0 deletions
diff --git a/lib/libc/thread/thrd_detach.c b/lib/libc/thread/thrd_detach.c
new file mode 100644
index 00000000..b315a20a
--- /dev/null
+++ b/lib/libc/thread/thrd_detach.c
@@ -0,0 +1,23 @@
+#include <__thread.h>
+#include <libc/futex.h>
+#include <stdatomic.h>
+#include <sys/mman.h>
+#include <threads.h>
+#include <unistd.h>
+
+int thrd_detach(thrd_t thr)
+{
+	struct __thread_self *tcb = (struct __thread_self *)thr;
+
+	if (tcb == NULL)
+		return thrd_error;
+
+	int state = atomic_exchange_explicit(&tcb->state, THREAD_STATE_DETACHED, memory_order_seq_cst);
+
+	if (state == THREAD_STATE_EXITED) {
+		if (tcb->map_base && tcb->map_size)
+			munmap(tcb->map_base, tcb->map_size);
+	}
+
+	return thrd_success;
+}