From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001
From: Vladimir Azarov <avm@intermediate-node.net>
Date: Tue, 1 Oct 2024 15:47:05 +0200
Subject: Initial version

---
 src/thread/pthread_detach.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 src/thread/pthread_detach.c

(limited to 'src/thread/pthread_detach.c')

diff --git a/src/thread/pthread_detach.c b/src/thread/pthread_detach.c
new file mode 100644
index 0000000..d73a500
--- /dev/null
+++ b/src/thread/pthread_detach.c
@@ -0,0 +1,18 @@
+#include "pthread_impl.h"
+#include <threads.h>
+
+static int __pthread_detach(pthread_t t)
+{
+	/* If the cas fails, detach state is either already-detached
+	 * or exiting/exited, and pthread_join will trap or cleanup. */
+	if (a_cas(&t->detach_state, DT_JOINABLE, DT_DETACHED) != DT_JOINABLE) {
+		int cs;
+		__pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
+		__pthread_join(t, 0);
+		__pthread_setcancelstate(cs, 0);
+	}
+	return 0;
+}
+
+weak_alias(__pthread_detach, pthread_detach);
+weak_alias(__pthread_detach, thrd_detach);
-- 
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