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  1. /****************************************************************************
  2. *
  3. *                            Open Watcom Project
  4. *
  5. *    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
  6. *
  7. *  ========================================================================
  8. *
  9. *    This file contains Original Code and/or Modifications of Original
  10. *    Code as defined in and that are subject to the Sybase Open Watcom
  11. *    Public License version 1.0 (the 'License'). You may not use this file
  12. *    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
  13. *    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
  14. *    provided with the Original Code and Modifications, and is also
  15. *    available at www.sybase.com/developer/opensource.
  16. *
  17. *    The Original Code and all software distributed under the License are
  18. *    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  19. *    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
  20. *    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
  21. *    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
  22. *    NON-INFRINGEMENT. Please see the License for the specific language
  23. *    governing rights and limitations under the License.
  24. *
  25. *  ========================================================================
  26. *
  27. * Description:  Near heap set routines.
  28. *
  29. ****************************************************************************/
  30.  
  31.  
  32. //#include "dll.h"        // needs to be first
  33. #include "variety.h"
  34. #include <stddef.h>
  35. #include <malloc.h>
  36. #include <string.h>
  37. #include "heap.h"
  38. #include "heapacc.h"
  39.  
  40.  
  41. #if defined(__SMALL_DATA__)
  42. _WCRTLINK int _heapset( unsigned int fill )
  43. {
  44.     return( _nheapset( fill ) );
  45. }
  46. #endif
  47.  
  48. #if defined(_M_IX86)
  49.     #pragma intrinsic(_fmemset)
  50. #endif
  51.  
  52. _WCRTLINK int _nheapset( unsigned int fill )
  53. {
  54.     mheapptr mhp;
  55.     frlptr  curr;
  56.     int test_heap;
  57.  
  58.     test_heap = _heapchk();
  59.     if( test_heap != _HEAPOK ) {
  60.         return( test_heap );
  61.     }
  62.     fill |= fill << 8;
  63.     _AccessNHeap();
  64.  
  65.     for( mhp = __nheapbeg; mhp != NULL; mhp = mhp->next ) {
  66.         curr = mhp->freehead.next;
  67.         for( ;; ) {
  68.             if( curr == (frlptr) &mhp->freehead ) break;
  69. #if defined(_M_IX86)
  70.             _fmemset( (void _WCFAR *)(curr + 1), fill, curr->len - sizeof(frl) );
  71. #else
  72.             memset( (void *)(curr + 1), fill, curr->len - sizeof(frl) );
  73. #endif
  74.             curr = curr->next;
  75.         }
  76.     }
  77.     _ReleaseNHeap();
  78.     return( _HEAPOK );
  79. }
  80.