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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* 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 Netscape are
* Copyright (C) 1998-2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License Version 2 or later (the
* "GPL"), in which case the provisions of the GPL are applicable
* instead of those above. If you wish to allow use of your
* version of this file only under the terms of the GPL and not to
* allow others to use your version of this file under the MPL,
* indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by
* the GPL. If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the
* GPL.
*/
#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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