source: rtems/cpukit/posix/src/setcancelstate.c @ f845e96

4.104.114.84.95
Last change on this file since f845e96 was f845e96, checked in by Joel Sherrill <joel.sherrill@…>, on Jul 5, 2002 at 6:13:18 PM

2002-07-05 Joel Sherrill <joel@…>

  • include/rtems/posix/cancel.h, src/cancel.c, src/cancelrun.c, src/mqueue.c, src/pthread.c, src/semaphore.c, src/setcancelstate.c, src/setcanceltype.c, src/testcancel.c: Per PR164, corrected the behavior of thread cancellation and did some cleanup as a side-effect.
  • Property mode set to 100644
File size: 1.4 KB
Line 
1/*
2 *  $Id$
3 */
4
5#if HAVE_CONFIG_H
6#include "config.h"
7#endif
8
9#include <pthread.h>
10#include <errno.h>
11
12#include <rtems/system.h>
13#include <rtems/score/chain.h>
14#include <rtems/score/isr.h>
15#include <rtems/score/thread.h>
16#include <rtems/score/wkspace.h>
17#include <rtems/posix/cancel.h>
18#include <rtems/posix/pthread.h>
19#include <rtems/posix/threadsup.h>
20
21/*PAGE
22 *
23 *  18.2.2 Setting Cancelability State, P1003.1c/Draft 10, p. 183
24 */
25
26int pthread_setcancelstate( 
27  int  state,
28  int *oldstate
29)
30{
31  POSIX_API_Control                 *thread_support;
32
33  /*
34   *  Don't even think about deleting a resource from an ISR.
35   *  Besides this request is supposed to be for _Thread_Executing
36   *  and the ISR context is not a thread.
37   */
38
39  if ( _ISR_Is_in_progress() ) 
40    return EPROTO;
41
42  if ( !oldstate )
43    return EINVAL;
44
45  if ( state != PTHREAD_CANCEL_ENABLE && state != PTHREAD_CANCEL_DISABLE )
46    return EINVAL;
47
48  thread_support = _Thread_Executing->API_Extensions[ THREAD_API_POSIX ];
49 
50  _Thread_Disable_dispatch();
51    *oldstate = thread_support->cancelability_state;
52    thread_support->cancelability_state = state;
53 
54    if ( thread_support->cancelability_state == PTHREAD_CANCEL_ENABLE && 
55         thread_support->cancelability_type == PTHREAD_CANCEL_ASYNCHRONOUS &&
56         thread_support->cancelation_requested )
57      _POSIX_Threads_cancel_run( _Thread_Executing );
58  _Thread_Enable_dispatch();
59 
60  return 0;
61}
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