score/src/pheapwalk.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSScoreProtHeap
0007  *
0008  * @brief This source file contains the implementation of
0009  *   _Protected_heap_Walk().
0010  */
0011
0012 /*
0013  *  COPYRIGHT (c) 1989-2007.
0014  *  On-Line Applications Research Corporation (OAR).
0015  *
0016  * Redistribution and use in source and binary forms, with or without
0017  * modification, are permitted provided that the following conditions
0018  * are met:
0019  * 1. Redistributions of source code must retain the above copyright
0020  *    notice, this list of conditions and the following disclaimer.
0021  * 2. Redistributions in binary form must reproduce the above copyright
0022  *    notice, this list of conditions and the following disclaimer in the
0023  *    documentation and/or other materials provided with the distribution.
0024  *
0025  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0026  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0027  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0028  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0029  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0030  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0031  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0032  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0033  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0034  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0035  * POSSIBILITY OF SUCH DAMAGE.
0036  */
0037
0038 #ifdef HAVE_CONFIG_H
0039 #include "config.h"
0040 #endif
0041
0042 #include <rtems/score/protectedheap.h>
0043 #include <rtems/score/threaddispatch.h>
0044
0045 bool _Protected_heap_Walk(
0046   Heap_Control *the_heap,
0047   int           source,
0048   bool          do_dump
0049 )
0050 {
0051   bool    status;
0052
0053   /*
0054    * If we are called from within a dispatching critical section,
0055    * then it is forbidden to lock a mutex.  But since we are inside
0056    * a critical section, it should be safe to walk it unlocked.
0057    *
0058    * NOTE: Dispatching is also disabled during initialization.
0059    */
0060   if ( _Thread_Dispatch_is_enabled() ) {
0061     _RTEMS_Lock_allocator();
0062       status = _Heap_Walk( the_heap, source, do_dump );
0063     _RTEMS_Unlock_allocator();
0064   } else {
0065     status = _Heap_Walk( the_heap, source, do_dump );
0066   }
0067   return status;
0068 }