source: rtems/cpukit/rtems/src/dpmemdelete.c @ 66cb142

Last change on this file since 66cb142 was 9c3bae11, checked in by Sebastian Huber <sebastian.huber@…>, on Apr 21, 2016 at 5:52:19 AM

rtems: Avoid Giant lock for dual ported memory

There is no need for an ISR lock since the Dual_ported_memory_Control is
immutable after initialization. ISR disable is enough for deletion
safety on uni-processor configurations.

Update #2555.

  • Property mode set to 100644
File size: 949 bytes
Line 
1/**
2 *  @file
3 *
4 *  @brief RTEMS Delete Port
5 *  @ingroup ClassicDPMEM
6 */
7
8/*
9 *  COPYRIGHT (c) 1989-2014.
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/rtems/dpmemimpl.h>
22
23rtems_status_code rtems_port_delete(
24  rtems_id id
25)
26{
27  Dual_ported_memory_Control *the_port;
28  ISR_lock_Context            lock_context;
29
30  _Objects_Allocator_lock();
31  the_port = _Dual_ported_memory_Get( id, &lock_context );
32
33  if ( the_port == NULL ) {
34    _Objects_Allocator_unlock();
35    return RTEMS_INVALID_ID;
36  }
37
38  _Objects_Close( &_Dual_ported_memory_Information, &the_port->Object );
39  _ISR_lock_ISR_enable( &lock_context );
40  _Dual_ported_memory_Free( the_port );
41  _Objects_Allocator_unlock();
42  return RTEMS_SUCCESSFUL;
43}
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