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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Netscape Portable Runtime (NSPR).
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "primpl.h"
#if defined(_PR_PTHREADS)
/*
** The pthreads version doesn't use these functions.
*/
void _PR_InitSegs(void)
{
}
#else /* _PR_PTHREADS */
void _PR_InitSegs(void)
{
_PR_MD_INIT_SEGS();
}
/*
** Allocate a memory segment. The size value is rounded up to the native
** system page size and a page aligned portion of memory is returned.
** This memory is not part of the malloc heap. If "vaddr" is not NULL
** then PR tries to allocate the segment at the desired virtual address.
*/
PRSegment* _PR_NewSegment(PRUint32 size, void *vaddr)
{
PRSegment *seg;
/* calloc the data structure for the segment */
seg = PR_NEWZAP(PRSegment);
if (seg) {
size = ((size + _pr_pageSize - 1) >> _pr_pageShift) << _pr_pageShift;
/*
** Now, allocate the actual segment memory (or map under some OS)
** The OS specific code decides from where or how to allocate memory.
*/
if (_PR_MD_ALLOC_SEGMENT(seg, size, vaddr) != PR_SUCCESS) {
PR_DELETE(seg);
return NULL;
}
}
return seg;
}
/*
** Free a memory segment.
*/
void _PR_DestroySegment(PRSegment *seg)
{
_PR_MD_FREE_SEGMENT(seg);
PR_DELETE(seg);
}
#endif /* _PR_PTHREADS */
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