From 2dc64542b634a71f1cb40b381feeacb75cc192dd Mon Sep 17 00:00:00 2001
From: bje <bje>
Date: Fri, 10 Jul 1998 14:25:41 +0000
Subject: 1998-07-11  Ben Elliston  <bje@cygnus.com>

	* sync.c (pthread_join): Implement.
---
 sync.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 sync.c

(limited to 'sync.c')

diff --git a/sync.c b/sync.c
new file mode 100644
index 0000000..5321da0
--- /dev/null
+++ b/sync.c
@@ -0,0 +1,48 @@
+/*
+ * sync.c
+ *
+ * Description:
+ * This translation unit implements functions related to thread
+ * synchronisation.
+ */
+
+#include "pthread.h"
+
+int
+pthread_join(pthread_t thread, void ** valueptr)
+{
+  LPDWORD exitcode;
+  pthread_t us = pthread_self();
+
+  /* First check if we are trying to join to ourselves. */
+  if (pthread_equal(thread, us) == 0)
+    {
+      return EDEADLK;
+    }
+
+  /* Wait on the kernel thread object. */
+  switch (WaitForSingleObject(thread, INFINITE))
+    {
+    case WAIT_FAILED:
+      /* The thread does not exist. */
+      return ESRCH;
+    case WAIT_OBJECT_0:
+      /* The thread has finished. */
+      break;
+    default:
+      /* This should never happen. */
+      break;
+    }
+ 
+  /* We don't get the exit code as a result of the last operation,
+     so we do it now. */
+
+  if (GetExitCodeThread(thread, exitcode) != TRUE)
+    {
+      return ESRCH;
+    }
+
+  /* FIXME: this is wrong. */
+  return &exitcode;
+}
+
-- 
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