98 lines
2.4 KiB
C
98 lines
2.4 KiB
C
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/********************************************************************/
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/** Microsoft LAN Manager **/
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/** Copyright(c) Microsoft Corp., 1987-1990 **/
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/********************************************************************/
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#ifndef WINDOWS
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#error "Only use these APIs under Windows!"
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#endif
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/****************************************************************************\
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LOCHEAP2.h
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Local-heap management helper routines
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These utility routines provide access to Windows local heaps in
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segments other than DS (the data segment). They are exactly
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like the LocalInit, LocalAlloc, LocalFree, LocalLock,
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LocalUnlock, Local handle and LocalSize APIs, except that they
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act on the heap in segment wHeapDS instead of the heap in DS.
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These routines are used primarily by the heap management system
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(see heap.cxx). They are also used by the
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HEAP_HANDLE/ELEMENT_HANDLE module (see loclheap.hxx).
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USAGE:
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HANDLE hGlobal = GlobalAlloc( GMEM_MOVEABLE, 1024 );
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if ( !hGlobal )
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error();
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LPSTR lpGlobal = GlobalLock( hGlobal );
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if ( !lpGlobal )
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error();
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{
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if ( !DoLocalInit( hGlobal, 1024 ) )
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error();
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HANDLE hLocal = DoLocalAlloc( HIWORD(lpGlobal), 128 );
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if ( !hLocal )
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error();
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LPSTR lpLocal = DoLocalLock( HIWORD(lpGlobal), hLocal );
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if ( !lpLocal )
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error();
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{
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HANDLE hLocal2 = DoLocalHandle(
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HIWORD(lpGlobal), LOWORD(lpLocal) );
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if (hLocal2 != hLocal)
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error();
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WORD wSize = DoLocalSize( HIWORD(lpGlobal), hLocal );
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if ( !wSize )
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error();
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}
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DoLocalUnlock( HIWORD(lpGlobal), hLocal );
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if ( DoLocalFree( HIWORD(lpGlobal), hLocal ) )
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error();
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}
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GlobalUnlock( hGlobal );
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GlobalFree( hGlobal );
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FILE HISTORY:
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jonn 24-Jan-1991 Created
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jonn 21-Mar-1991 Code review changes from 2/20/91 (attended
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by JonN, RustanL, ?)
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\****************************************************************************/
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#ifndef _LOCHEAP2_H_
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#define _LOCHEAP2_H_
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BOOL DoLocalInit(WORD wHeapDS, WORD wBytes);
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HANDLE DoLocalAlloc(WORD wHeapDS, WORD wFlags, WORD wBytes);
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HANDLE DoLocalFree(WORD wHeapDS, HANDLE handleFree);
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LPSTR DoLocalLock(WORD wHeapDS, HANDLE handleLocal);
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VOID DoLocalUnlock(WORD wHeapDS, HANDLE handleLocal);
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HANDLE DoLocalHandle(WORD wHeapDS, WORD wMem);
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WORD DoLocalSize(WORD wHeapDS, HANDLE handleLocal);
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#endif // _LOCHEAP2_H_
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