74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
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/***
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*heapmin.c - Minimize the heap
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*
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* Copyright (c) 1989-1991, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Minimize the heap freeing as much memory as possible back
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* to the OS.
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*
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*Revision History:
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* 08-28-89 JCR Module created.
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* 11-06-89 JCR Improved, partitioned
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* 11-13-89 GJF Added MTHREAD support, also fixed copyright
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* 12-14-89 GJF Couple of bug fixes, some tuning, cleaned up the
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* formatting a bit and changed header file name to
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* heap.h
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* 12-20-89 GJF Removed references to plastdesc
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* 03-11-90 GJF Replaced _cdecl with _CALLTYPE1, added #include
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* <cruntime.h> and removed #include <register.h>.
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* 03-29-90 GJF Made _heapmin_region() and _free_partial_region()
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* _CALLTYPE4.
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* 07-24-90 SBM Compiles cleanly with -W3 (tentatively removed
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* unreferenced labels and unreachable code), removed
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* '32' from API names
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* 09-28-90 GJF New-style function declarators. Also, rewrote expr.
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* to avoid using cast as lvalue.
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* 12-04-90 SRW Changed to include <oscalls.h> instead of <doscalls.h>
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* 12-06-90 SRW Added _CRUISER_ and _WIN32 conditionals.
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* 12-28-90 SRW Added cast of void * to char * for Mips C Compiler
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* 03-05-91 GJF Changed strategy for rover - old version available
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* by #define-ing _OLDROVER_.
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* 06-27-94 SRW Ported to Win32 Heap API
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <oscalls.h>
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#include <malloc.h>
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#include <os2dll.h>
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#include <stdlib.h>
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#ifndef _POSIX_
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/***
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*_heapmin() - Minimize the heap
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*
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*Purpose:
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* Minimize the heap freeing as much memory as possible back
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* to the OS.
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*
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*Entry:
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* (void)
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*
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*Exit:
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*
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* 0 = no error has occurred
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* -1 = an error has occurred (errno is set)
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*
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*Exceptions:
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*
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*******************************************************************************/
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int _CALLTYPE1 _heapmin(void)
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{
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if (HeapCompact( GetProcessHeap(), 0 ) == 0) {
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return -1;
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}
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else {
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return 0;
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}
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}
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#endif /* !_POSIX_ */
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