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| 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/. */ | |
| 5 | |
| 6 #include "prbit.h" | |
| 7 #include "prsystem.h" | |
| 8 | |
| 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 | |
| 18 | |
| 19 PRInt32 _pr_pageShift; | |
| 20 PRInt32 _pr_pageSize; | |
| 21 | |
| 22 /* | |
| 23 ** Get system page size | |
| 24 */ | |
| 25 static void GetPageSize(void) | |
| 26 { | |
| 27 PRInt32 pageSize; | |
| 28 | |
| 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 */ | |
| 43 | |
| 44 #ifdef XP_BEOS | |
| 45 _pr_pageSize = B_PAGE_SIZE; | |
| 46 #endif | |
| 47 | |
| 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 */ | |
| 57 | |
| 58 pageSize = _pr_pageSize; | |
| 59 PR_CEILING_LOG2(_pr_pageShift, pageSize); | |
| 60 } | |
| 61 | |
| 62 PR_IMPLEMENT(PRInt32) PR_GetPageShift(void) | |
| 63 { | |
| 64 if (!_pr_pageSize) { | |
| 65 GetPageSize(); | |
| 66 } | |
| 67 return _pr_pageShift; | |
| 68 } | |
| 69 | |
| 70 PR_IMPLEMENT(PRInt32) PR_GetPageSize(void) | |
| 71 { | |
| 72 if (!_pr_pageSize) { | |
| 73 GetPageSize(); | |
| 74 } | |
| 75 return _pr_pageSize; | |
| 76 } | |
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Chromium Code Reviews
Issue 2078763002:
Delete bundled copy of NSS and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/nss@master