2004-03-17 Marcus Brinkmann <marcus@gnu.org>

	* libpthread: New directory, populated with Neal H. Walfields
	pthread implementation.

1 files changed, 54 insertions, 0 deletions

diff --git a/libpthread/sysdeps/generic/bits/cancelation.h b/libpthread/sysdeps/generic/bits/cancelation.h
new file mode 100644
index 0000000..bb6b58a
--- /dev/null
+++ b/libpthread/sysdeps/generic/bits/cancelation.h
@@ -0,0 +1,54 @@
+/* Cancelation.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_CANCELATION_H
+#define _BITS_CANCELATION_H	1
+
+#include <assert.h>
+
+struct __pthread_cancelation_handler
+{
+  void (*handler)(void *);
+  void *arg;
+  struct __pthread_cancelation_handler *next;
+};
+
+/* Returns the thread local location of the cleanup handler stack.  */
+struct __pthread_cancelation_handler **__pthread_get_cleanup_stack (void);
+
+#define pthread_cleanup_push(rt, rtarg) \
+	{ \
+	  struct __pthread_cancelation_handler **__handlers \
+	    = __pthread_get_cleanup_stack (); \
+	  struct __pthread_cancelation_handler __handler = \
+	    { \
+	      handler: (rt), \
+	      arg: (rtarg), \
+	      next: *__handlers \
+	    }; \
+	  *__handlers = &__handler;
+	  
+#define pthread_cleanup_pop(execute) \
+	  if (execute) \
+	    __handler.handler (__handler.arg); \
+	  assert (*__handlers == &__handler); \
+	  *__handlers = __handler.next; \
+	}
+
+#endif /* _BITS_CANCELATION_H */