From ad204c1d96ff23ab2421b8890d984fe5d78f690b Mon Sep 17 00:00:00 2001
From: bje <bje>
Date: Thu, 23 Jul 1998 15:51:20 +0000
Subject: 1998-07-24  Ben Elliston  <bje@cygnus.com>

	* sync.c (pthread_join): Return if the target thread is detached.
---
 sync.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'sync.c')

diff --git a/sync.c b/sync.c
index 5321da0..20009ac 100644
--- a/sync.c
+++ b/sync.c
@@ -12,6 +12,8 @@ int
 pthread_join(pthread_t thread, void ** valueptr)
 {
   LPDWORD exitcode;
+  _pthread_threads_thread_t * target;
+
   pthread_t us = pthread_self();
 
   /* First check if we are trying to join to ourselves. */
@@ -20,6 +22,18 @@ pthread_join(pthread_t thread, void ** valueptr)
       return EDEADLK;
     }
 
+  /* If the thread is detached, then join will return immediately. */
+
+  target = _pthread_find_thread_entry(thread);
+  if (target < 0)
+    {
+      return EINVAL;
+    }
+  else if (target->detached == PTHREAD_CREATE_DETACHED)
+    {
+      return ESRCH;
+    }
+
   /* Wait on the kernel thread object. */
   switch (WaitForSingleObject(thread, INFINITE))
     {
-- 
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