source: rtems/cpukit/posix/src/pspinlock.c @ dce48791

5
Last change on this file since dce48791 was dce48791, checked in by Sebastian Huber <sebastian.huber@…>, on 05/23/16 at 11:37:59

score: Add Status_Control for all APIs

Unify the status codes of the Classic and POSIX API to use the new enum
Status_Control. This eliminates the Thread_Control::Wait::timeout_code
field and the timeout parameter of _Thread_queue_Enqueue_critical() and
_MPCI_Send_request_packet(). It gets rid of the status code translation
tables and instead uses simple bit operations to get the status for a
particular API. This enables translation of status code constants at
compile time. Add _Thread_Wait_get_status() to avoid direct access of
thread internal data structures.
  • Property mode set to 100644
File size: 878 bytes
Line 
1/**
2 *  @file
3 *
4 *  @brief Wait at a Spinlock
5 *  @ingroup POSIXAPI
6 */
7
8/*
9 *  COPYRIGHT (c) 1989-2007.
10 *  On-Line Applications Research Corporation (OAR).
11 *
12 *  The license and distribution terms for this file may be
13 *  found in the file LICENSE in this distribution or at
14 *  http://www.rtems.org/license/LICENSE.
15 */
16
17#if HAVE_CONFIG_H
18#include "config.h"
19#endif
20
21#include <rtems/posix/spinlockimpl.h>
22#include <rtems/posix/posixapi.h>
23
24int pthread_spin_lock( pthread_spinlock_t *spinlock )
25{
26  POSIX_Spinlock_Control *the_spinlock;
27  ISR_lock_Context        lock_context;
28  Status_Control          status;
29
30  the_spinlock = _POSIX_Spinlock_Get( spinlock, &lock_context );
31  if ( the_spinlock == NULL ) {
32    return EINVAL;
33  }
34
35  status = _CORE_spinlock_Seize(
36    &the_spinlock->Spinlock,
37    true,
38    0,
39    &lock_context
40  );
41  return _POSIX_Get_error( status );
42}
Note: See TracBrowser for help on using the repository browser.