The Tor Browser: nsprpub/pr/src/md/prosdep.c@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "prbit.h"

     7 #include "prsystem.h"

     9 #ifdef XP_UNIX

    10 #include <unistd.h>

    11 #endif

    12 #ifdef _WIN32

    13 #include <windows.h>

    14 #endif

    15 #ifdef XP_BEOS

    16 #include <OS.h>

    17 #endif

    19 PRInt32 _pr_pageShift;

    20 PRInt32 _pr_pageSize;

    22 /*

    23 ** Get system page size

    24 */

    25 static void GetPageSize(void)

    26 {

    27 	PRInt32 pageSize;

    29     /* Get page size */

    30 #ifdef XP_UNIX

    31 #if defined BSDI || defined AIX \

    32         || defined LINUX || defined __GNU__ || defined __GLIBC__ \

    33         || defined FREEBSD || defined NETBSD || defined OPENBSD \

    34         || defined DARWIN || defined SYMBIAN

    35     _pr_pageSize = getpagesize();

    36 #elif defined(HPUX)

    37     /* I have no idea. Don't get me started. --Rob */

    38     _pr_pageSize = sysconf(_SC_PAGE_SIZE);

    39 #else

    40     _pr_pageSize = sysconf(_SC_PAGESIZE);

    41 #endif

    42 #endif /* XP_UNIX */

    44 #ifdef XP_BEOS

    45     _pr_pageSize = B_PAGE_SIZE;

    46 #endif

    48 #ifdef XP_PC

    49 #ifdef _WIN32

    50     SYSTEM_INFO info;

    51     GetSystemInfo(&info);

    52     _pr_pageSize = info.dwPageSize;

    53 #else

    54     _pr_pageSize = 4096;

    55 #endif

    56 #endif /* XP_PC */

    58 	pageSize = _pr_pageSize;

    59 	PR_CEILING_LOG2(_pr_pageShift, pageSize);

    60 }

    62 PR_IMPLEMENT(PRInt32) PR_GetPageShift(void)

    63 {

    64     if (!_pr_pageSize) {

    65 	GetPageSize();

    66     }

    67     return _pr_pageShift;

    68 }

    70 PR_IMPLEMENT(PRInt32) PR_GetPageSize(void)

    71 {

    72     if (!_pr_pageSize) {

    73 	GetPageSize();

    74     }

    75     return _pr_pageSize;

    76 }

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