source: rtems/cpukit/score/src/heapsizeofuserarea.c @ a6eef8b

Last change on this file since a6eef8b was a6eef8b, checked in by Joel Sherrill <joel.sherrill@…>, on 09/04/03 at 18:52:48

2003-09-04 Joel Sherrill <joel@…>

  • apiext.c, chain.c, coremsg.c, coremsgbroadcast.c, coremsgclose.c, coremsgflush.c, coremsgflushsupp.c, coremsgflushwait.c, coremsginsert.c, coremsgseize.c, coremsgsubmit.c, coremutex.c, coremutexflush.c, coremutexseize.c, coremutexsurrender.c, coresem.c, coresemflush.c, coresemseize.c, coresemsurrender.c, coretod.c, coretodset.c, coretodtickle.c, coretodtoseconds.c, coretodvalidate.c, heap.c, heapallocate.c, heapextend.c, heapfree.c, heapgetinfo.c, heapsizeofuserarea.c, heapwalk.c, interr.c, isr.c, mpci.c, object.c, objectallocate.c, objectallocatebyindex.c, objectclearname.c, objectcomparenameraw.c, objectcomparenamestring.c, objectcopynameraw.c, objectcopynamestring.c, objectextendinformation.c, objectfree.c, objectget.c, objectgetbyindex.c, objectgetisr.c, objectgetnext.c, objectgetnoprotection.c, objectinitializeinformation.c, objectmp.c, objectnametoid.c, objectshrinkinformation.c, thread.c, threadchangepriority.c, threadclearstate.c, threadclose.c, threadcreateidle.c, threaddelayended.c, threaddispatch.c, threadevaluatemode.c, threadget.c, threadhandler.c, threadidlebody.c, threadinitialize.c, threadloadenv.c, threadmp.c, threadq.c, threadqdequeue.c, threadqdequeuefifo.c, threadqdequeuepriority.c, threadqenqueue.c, threadqenqueuefifo.c, threadqenqueuepriority.c, threadqextract.c, threadqextractfifo.c, threadqextractpriority.c, threadqextractwithproxy.c, threadqfirst.c, threadqfirstfifo.c, threadqfirstpriority.c, threadqflush.c, threadqtimeout.c, threadready.c, threadreset.c, threadresettimeslice.c, threadrestart.c, threadresume.c, threadrotatequeue.c, threadsetpriority.c, threadsetstate.c, threadsettransient.c, threadstackallocate.c, threadstackfree.c, threadstart.c, threadstartmultitasking.c, threadsuspend.c, threadtickletimeslice.c, threadyieldprocessor.c, userext.c, watchdog.c, watchdogadjust.c, watchdoginsert.c, watchdogremove.c, watchdogtickle.c, wkspace.c: URL for license changed.
  • Property mode set to 100644
File size: 1.5 KB
Line 
1/*
2 *  Heap Handler
3 *
4 *  COPYRIGHT (c) 1989-1999.
5 *  On-Line Applications Research Corporation (OAR).
6 *
7 *  The license and distribution terms for this file may be
8 *  found in the file LICENSE in this distribution or at
9 *  http://www.rtems.com/license/LICENSE.
10 *
11 *  $Id$
12 */
13
14
15#include <rtems/system.h>
16#include <rtems/score/sysstate.h>
17#include <rtems/score/heap.h>
18
19/*PAGE
20 *
21 *  _Heap_Size_of_user_area
22 *
23 *  This kernel routine returns the size of the memory area
24 *  given heap block.
25 *
26 *  Input parameters:
27 *    the_heap         - pointer to heap header
28 *    starting_address - starting address of the memory block to free.
29 *    size             - pointer to size of area
30 *
31 *  Output parameters:
32 *    size  - size of area filled in
33 *    TRUE  - if starting_address is valid heap address
34 *    FALSE - if starting_address is invalid heap address
35 */
36
37boolean _Heap_Size_of_user_area(
38  Heap_Control        *the_heap,
39  void                *starting_address,
40  unsigned32          *size
41)
42{
43  Heap_Block        *the_block;
44  Heap_Block        *next_block;
45  unsigned32         the_size;
46
47  the_block = _Heap_User_block_at( starting_address );
48 
49  if ( !_Heap_Is_block_in( the_heap, the_block ) ||
50        _Heap_Is_block_free( the_block ) )
51    return( FALSE );
52
53  the_size   = _Heap_Block_size( the_block );
54  next_block = _Heap_Block_at( the_block, the_size );
55
56  if ( !_Heap_Is_block_in( the_heap, next_block ) ||
57       (the_block->front_flag != next_block->back_flag) )
58    return( FALSE );
59
60  *size = the_size;
61  return( TRUE );
62}
63
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