NEWS.stable: log cherry-pick [ae006b4]->[4a9738e] strtoimax: Avoid link error on...

[gnulib.git] / lib / pthread.in.h

diff --git a/lib/pthread.in.h b/lib/pthread.in.h
index 66847f8..c05c7c9 100644 (file)
--- a/lib/pthread.in.h
+++ b/lib/pthread.in.h
@@ -1,6 +1,6 @@
 /* Implement a trivial subset of POSIX 1003.1-2008 pthread.h.
 
-   Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+   Copyright (C) 2009-2011 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -18,7 +18,7 @@
 
 /* Written by Paul Eggert and Glen Lenker.  */
 
-#ifndef _GL_PTHREAD_H_
+#ifndef _@GUARD_PREFIX@_PTHREAD_H_
 
 #if __GNUC__ >= 3
 @PRAGMA_SYSTEM_HEADER@
@@ -30,8 +30,8 @@
 # @INCLUDE_NEXT@ @NEXT_PTHREAD_H@
 #endif
 
-#ifndef _GL_PTHREAD_H_
-#define _GL_PTHREAD_H_
+#ifndef _@GUARD_PREFIX@_PTHREAD_H_
+#define _@GUARD_PREFIX@_PTHREAD_H_
 
 #include <errno.h>
 #include <stdlib.h>
@@ -40,6 +40,7 @@
 #include <time.h>
 
 #if ! @HAVE_PTHREAD_T@
+# if !GNULIB_defined_pthread_types
  typedef int pthread_t;
  typedef int pthread_attr_t;
  typedef int pthread_barrier_t;
@@ -52,6 +53,8 @@
  typedef int pthread_once_t;
  typedef int pthread_rwlock_t;
  typedef int pthread_rwlockattr_t;
+#  define GNULIB_defined_pthread_types 1
+# endif
 #endif
 
 #ifndef PTHREAD_COND_INITIALIZER
@@ -97,6 +100,8 @@
 
 #if ! @HAVE_PTHREAD_T@
 
+# if !GNULIB_defined_pthread_functions
+
 /* Provide substitutes for the thread functions that should work
    adequately on a single-threaded implementation, where
    pthread_create always fails.  The goal is to let programs compile
@@ -217,10 +222,15 @@ pthread_mutex_unlock (pthread_mutex_t *mutex)
   return 0;
 }
 
+#  define GNULIB_defined_pthread_functions 1
+# endif
+
 #endif
 
 #if ! @HAVE_PTHREAD_SPINLOCK_T@
 
+# if !GNULIB_defined_pthread_spinlock_t
+
 /* Approximate spinlocks with mutexes.  */
 
 typedef pthread_mutex_t pthread_spinlock_t;
@@ -254,7 +264,11 @@ pthread_spin_unlock (pthread_spinlock_t *lock)
 {
   return pthread_mutex_unlock (lock);
 }
+
+#  define GNULIB_defined_pthread_spinlock_t 1
+# endif
+
 #endif
 
-#endif /* _GL_PTHREAD_H_ */
-#endif /* _GL_PTHREAD_H_ */
+#endif /* _@GUARD_PREFIX@_PTHREAD_H_ */
+#endif /* _@GUARD_PREFIX@_PTHREAD_H_ */