source: rtems/cpukit/posix/src/cleanuppush.c @ 1de949a8

4.104.115
Last change on this file since 1de949a8 was 1de949a8, checked in by Ralf Corsepius <ralf.corsepius@…>, on 11/30/09 at 15:49:52

Whitespace removal.

  • Property mode set to 100644
File size: 1.5 KB
Line 
1/*
2 *  COPYRIGHT (c) 1989-2008.
3 *  On-Line Applications Research Corporation (OAR).
4 *
5 *  The license and distribution terms for this file may be
6 *  found in the file LICENSE in this distribution or at
7 *  http://www.rtems.com/license/LICENSE.
8 *
9 *  $Id$
10 */
11
12#if HAVE_CONFIG_H
13#include "config.h"
14#endif
15
16#include <pthread.h>
17#include <errno.h>
18
19#include <rtems/system.h>
20#include <rtems/score/chain.h>
21#include <rtems/score/isr.h>
22#include <rtems/score/thread.h>
23#include <rtems/score/wkspace.h>
24#include <rtems/posix/cancel.h>
25#include <rtems/posix/pthread.h>
26#include <rtems/posix/threadsup.h>
27
28/*PAGE
29 *
30 *  18.2.3.1 Establishing Cancellation Handlers, P1003.1c/Draft 10, p. 184
31 */
32
33void pthread_cleanup_push(
34  void   (*routine)( void * ),
35  void    *arg
36)
37{
38  POSIX_Cancel_Handler_control      *handler;
39  Chain_Control                     *handler_stack;
40  POSIX_API_Control                 *thread_support;
41
42  /*
43   *  The POSIX standard does not address what to do when the routine
44   *  is NULL.  It also does not address what happens when we cannot
45   *  allocate memory or anything else bad happens.
46   */
47  if ( !routine )
48    return;
49
50  _Thread_Disable_dispatch();
51  handler = _Workspace_Allocate( sizeof( POSIX_Cancel_Handler_control ) );
52
53  if ( handler ) {
54    thread_support = _Thread_Executing->API_Extensions[ THREAD_API_POSIX ];
55
56    handler_stack = &thread_support->Cancellation_Handlers;
57
58    handler->routine = routine;
59    handler->arg = arg;
60
61    _Chain_Append( handler_stack, &handler->Node );
62  }
63  _Thread_Enable_dispatch();
64}
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