LCOV - code coverage report
Current view: directory - nsprpub/pr/src/md - prosdep.c (source / functions) Found Hit Coverage
Test: app.info Lines: 13 12 92.3 %
Date: 2012-06-02 Functions: 3 3 100.0 %

       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 "prbit.h"
      39                 : #include "prsystem.h"
      40                 : 
      41                 : #ifdef XP_UNIX
      42                 : #include <unistd.h>
      43                 : #endif
      44                 : #ifdef SUNOS4
      45                 : #include "md/sunos4.h"
      46                 : #endif
      47                 : #ifdef _WIN32
      48                 : #include <windows.h>
      49                 : #endif 
      50                 : #ifdef XP_BEOS
      51                 : #include <OS.h>
      52                 : #endif
      53                 : 
      54                 : PRInt32 _pr_pageShift;
      55                 : PRInt32 _pr_pageSize;
      56                 : 
      57                 : /*
      58                 : ** Get system page size
      59                 : */
      60           20034 : static void GetPageSize(void)
      61                 : {
      62                 :         PRInt32 pageSize;
      63                 : 
      64                 :     /* Get page size */
      65                 : #ifdef XP_UNIX
      66                 : #if defined SUNOS4 || defined BSDI || defined AIX \
      67                 :         || defined LINUX || defined __GNU__ || defined __GLIBC__ \
      68                 :         || defined FREEBSD || defined NETBSD || defined OPENBSD \
      69                 :         || defined DARWIN || defined NEXTSTEP || defined SYMBIAN
      70           20034 :     _pr_pageSize = getpagesize();
      71                 : #elif defined(HPUX)
      72                 :     /* I have no idea. Don't get me started. --Rob */
      73                 :     _pr_pageSize = sysconf(_SC_PAGE_SIZE);
      74                 : #else
      75                 :     _pr_pageSize = sysconf(_SC_PAGESIZE);
      76                 : #endif
      77                 : #endif /* XP_UNIX */
      78                 : 
      79                 : #ifdef XP_BEOS
      80                 :     _pr_pageSize = B_PAGE_SIZE;
      81                 : #endif
      82                 : 
      83                 : #ifdef XP_PC
      84                 : #ifdef _WIN32
      85                 :     SYSTEM_INFO info;
      86                 :     GetSystemInfo(&info);
      87                 :     _pr_pageSize = info.dwPageSize;
      88                 : #else
      89                 :     _pr_pageSize = 4096;
      90                 : #endif
      91                 : #endif /* XP_PC */
      92                 : 
      93           20034 :         pageSize = _pr_pageSize;
      94           20034 :         PR_CEILING_LOG2(_pr_pageShift, pageSize);
      95           20034 : }
      96                 : 
      97             230 : PR_IMPLEMENT(PRInt32) PR_GetPageShift(void)
      98                 : {
      99             230 :     if (!_pr_pageSize) {
     100               0 :         GetPageSize();
     101                 :     }
     102             230 :     return _pr_pageShift;
     103                 : }
     104                 : 
     105           20494 : PR_IMPLEMENT(PRInt32) PR_GetPageSize(void)
     106                 : {
     107           20494 :     if (!_pr_pageSize) {
     108           20034 :         GetPageSize();
     109                 :     }
     110           20494 :     return _pr_pageSize;
     111                 : }

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