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w16mem.c
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
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00010  * Software distributed under the License is distributed on an "AS IS" basis,
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00014  *
00015  * The Original Code is the Netscape Portable Runtime (NSPR).
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00017  * The Initial Developer of the Original Code is
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00024  * Alternatively, the contents of this file may be used under the terms of
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00037 
00038 /*******************************************************************
00039 ** w16mem.c -- Implement memory segment functions.
00040 **
00041 ** 
00042 ********************************************************************
00043 */
00044 #include "primpl.h"
00045 
00046 
00047 /*
00048 **     Allocate a new memory segment.
00049 **     
00050 **     Return the segment's access rights and size.  
00051 */
00052 PRStatus _MD_AllocSegment(PRSegment *seg, PRUint32 size, void *vaddr)
00053 {
00054        PR_ASSERT(seg != 0);
00055        PR_ASSERT(size != 0);
00056        PR_ASSERT(vaddr == 0);
00057 
00058        /*     
00059        ** Take the actual memory for the segment out of our Figment heap.
00060        */
00061 
00062        seg->vaddr = (char *)malloc(size);
00063 
00064        if (seg->vaddr == NULL) {
00065               return PR_FAILURE;
00066        }
00067 
00068        seg->size = size;    
00069 
00070        return PR_SUCCESS;
00071 } /* --- end _MD_AllocSegment() --- */
00072 
00073 
00074 /*
00075 **     Free previously allocated memory segment.
00076 */
00077 void _MD_FreeSegment(PRSegment *seg)
00078 {
00079        PR_ASSERT((seg->flags & _PR_SEG_VM) == 0);
00080 
00081        if (seg->vaddr != NULL)
00082               free( seg->vaddr );
00083     return;
00084 } /* --- end _MD_FreeSegment() --- */