LCOV - code coverage report
Current view: directory - nsprpub/pr/src/memory - prseg.c (source / functions) Found Hit Coverage
Test: app.info Lines: 2 2 100.0 %
Date: 2012-06-02 Functions: 1 1 100.0 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is the Netscape Portable Runtime (NSPR).
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998-2000
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      26                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #include "primpl.h"
      39                 : 
      40                 : #if defined(_PR_PTHREADS)
      41                 : 
      42                 : /*
      43                 : ** The pthreads version doesn't use these functions.
      44                 : */
      45           20034 : void _PR_InitSegs(void)
      46                 : {
      47           20034 : }
      48                 : 
      49                 : #else /* _PR_PTHREADS */
      50                 : 
      51                 : void _PR_InitSegs(void)
      52                 : {
      53                 :         _PR_MD_INIT_SEGS();
      54                 : }
      55                 : 
      56                 : /*
      57                 : ** Allocate a memory segment. The size value is rounded up to the native
      58                 : ** system page size and a page aligned portion of memory is returned.
      59                 : ** This memory is not part of the malloc heap. If "vaddr" is not NULL
      60                 : ** then PR tries to allocate the segment at the desired virtual address.
      61                 : */
      62                 : PRSegment* _PR_NewSegment(PRUint32 size, void *vaddr)
      63                 : {
      64                 :     PRSegment *seg;
      65                 : 
      66                 :         /* calloc the data structure for the segment */
      67                 :     seg = PR_NEWZAP(PRSegment);
      68                 : 
      69                 :     if (seg) {
      70                 :             size = ((size + _pr_pageSize - 1) >> _pr_pageShift) << _pr_pageShift;
      71                 :                 /*
      72                 :                 **      Now, allocate the actual segment memory (or map under some OS)
      73                 :                 **      The OS specific code decides from where or how to allocate memory.
      74                 :                 */
      75                 :             if (_PR_MD_ALLOC_SEGMENT(seg, size, vaddr) != PR_SUCCESS) {
      76                 :                         PR_DELETE(seg);
      77                 :                         return NULL;
      78                 :         }
      79                 :         }
      80                 : 
      81                 :     return seg;
      82                 : }
      83                 : 
      84                 : /*
      85                 : ** Free a memory segment.
      86                 : */
      87                 : void _PR_DestroySegment(PRSegment *seg)
      88                 : {
      89                 :         _PR_MD_FREE_SEGMENT(seg);
      90                 :     PR_DELETE(seg);
      91                 : }
      92                 : 
      93                 : #endif /* _PR_PTHREADS */

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