From 44f6c8a35ca491b1f04d6b460ab5d0d8a3cf6083 Mon Sep 17 00:00:00 2001
From: rpj <rpj>
Date: Fri, 12 Feb 1999 08:19:34 +0000
Subject: Sat Feb 13 03:03:30 1999  Ross Johnson 
 <rpj@ixobrychus.canberra.edu.au>         * pthread.h (struct
 pthread_once_t_): Replaced.         * misc.c (pthread_once): Replace with
 John Bossom's version;         has lighter weight serialisation; fixes
 problem of not holding         competing threads until after the init_routine
 completes.

---
 pthread.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'pthread.h')

diff --git a/pthread.h b/pthread.h
index 415602c..d08eac3 100644
--- a/pthread.h
+++ b/pthread.h
@@ -491,8 +491,14 @@ extern "C"
  * ====================
  * ====================
  */
-#define PTHREAD_ONCE_INIT	 { 0, PTHREAD_MUTEX_INITIALIZER }
+#define PTHREAD_ONCE_INIT       { FALSE, -1 }
 
+struct pthread_once_t_
+{
+  int done;                 /* indicates if user function executed  */
+  long started;             /* First thread to increment this value */
+                            /* to zero executes the user function   */
+};
 
 /*
  * ====================
-- 
cgit v1.2.3