| 1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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| 2 | /* ***** BEGIN LICENSE BLOCK *****
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| 3 | * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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| 4 | *
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| 5 | * The contents of this file are subject to the Mozilla Public License Version
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| 6 | * 1.1 (the "License"); you may not use this file except in compliance with
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| 7 | * the License. You may obtain a copy of the License at
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| 8 | * http://www.mozilla.org/MPL/
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| 9 | *
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| 10 | * Software distributed under the License is distributed on an "AS IS" basis,
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| 11 | * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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| 12 | * for the specific language governing rights and limitations under the
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| 13 | * License.
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| 14 | *
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| 15 | * The Original Code is the Netscape Portable Runtime (NSPR).
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| 16 | *
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| 17 | * The Initial Developer of the Original Code is
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| 18 | * Netscape Communications Corporation.
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| 19 | * Portions created by the Initial Developer are Copyright (C) 1998-2000
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| 20 | * the Initial Developer. All Rights Reserved.
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| 21 | *
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| 22 | * Contributor(s):
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| 23 | *
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| 24 | * Alternatively, the contents of this file may be used under the terms of
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| 25 | * either the GNU General Public License Version 2 or later (the "GPL"), or
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| 26 | * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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| 27 | * in which case the provisions of the GPL or the LGPL are applicable instead
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| 28 | * of those above. If you wish to allow use of your version of this file only
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| 29 | * under the terms of either the GPL or the LGPL, and not to allow others to
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| 30 | * use your version of this file under the terms of the MPL, indicate your
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| 31 | * decision by deleting the provisions above and replace them with the notice
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| 32 | * and other provisions required by the GPL or the LGPL. If you do not delete
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| 33 | * the provisions above, a recipient may use your version of this file under
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| 34 | * the terms of any one of the MPL, the GPL or the LGPL.
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| 35 | *
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| 36 | * ***** END LICENSE BLOCK ***** */
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| 37 |
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| 38 | #ifndef prunixos_h___
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| 39 | #define prunixos_h___
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| 40 |
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| 41 | /*
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| 42 | * If FD_SETSIZE is not defined on the command line, set the default value
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| 43 | * before include select.h
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| 44 | */
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| 45 | /*
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| 46 | * Linux: FD_SETSIZE is defined in /usr/include/sys/select.h and should
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| 47 | * not be redefined.
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| 48 | */
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| 49 | #if !defined(LINUX) && !defined(DARWIN) && !defined(NEXTSTEP)
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| 50 | #ifndef FD_SETSIZE
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| 51 | #define FD_SETSIZE 4096
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| 52 | #endif
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| 53 | #endif
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| 54 |
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| 55 | #include <unistd.h>
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| 56 | #include <stddef.h>
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| 57 | #include <sys/stat.h>
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| 58 | #include <dirent.h>
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| 59 | #include <errno.h>
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| 60 |
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| 61 | #include "prmem.h"
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| 62 | #include "prclist.h"
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| 63 |
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| 64 | /*
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| 65 | * For select(), fd_set, and struct timeval.
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| 66 | *
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| 67 | * In The Single UNIX(R) Specification, Version 2,
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| 68 | * the header file for select() is <sys/time.h>.
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| 69 | *
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| 70 | * fd_set is defined in <sys/types.h>. Usually
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| 71 | * <sys/time.h> includes <sys/types.h>, but on some
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| 72 | * older systems <sys/time.h> does not include
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| 73 | * <sys/types.h>, so we include it explicitly.
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| 74 | */
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| 75 | #include <sys/time.h>
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| 76 | #include <sys/types.h>
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| 77 |
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| 78 | #define PR_DIRECTORY_SEPARATOR '/'
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| 79 | #define PR_DIRECTORY_SEPARATOR_STR "/"
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| 80 | #define PR_PATH_SEPARATOR ':'
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| 81 | #define PR_PATH_SEPARATOR_STR ":"
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| 82 | #define GCPTR
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| 83 | typedef int (*FARPROC)();
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| 84 |
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| 85 | /*
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| 86 | * intervals at which GLOBAL threads wakeup to check for pending interrupt
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| 87 | */
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| 88 | #define _PR_INTERRUPT_CHECK_INTERVAL_SECS 5
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| 89 | extern PRIntervalTime intr_timeout_ticks;
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| 90 |
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| 91 | /*
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| 92 | ** Make a redzone at both ends of the stack segment. Disallow access
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| 93 | ** to those pages of memory. It's ok if the mprotect call's don't
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| 94 | ** work - it just means that we don't really have a functional
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| 95 | ** redzone.
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| 96 | */
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| 97 | #include <sys/mman.h>
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| 98 | #ifndef PROT_NONE
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| 99 | #define PROT_NONE 0x0
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| 100 | #endif
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| 101 |
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| 102 | #if defined(DEBUG) && !defined(DARWIN) && !defined(NEXTSTEP)
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| 103 | #if !defined(SOLARIS)
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| 104 | #include <string.h> /* for memset() */
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| 105 | #define _MD_INIT_STACK(ts,REDZONE) \
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| 106 | PR_BEGIN_MACRO \
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| 107 | (void) mprotect((void*)ts->seg->vaddr, REDZONE, PROT_NONE); \
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| 108 | (void) mprotect((void*) ((char*)ts->seg->vaddr + REDZONE + ts->stackSize),\
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| 109 | REDZONE, PROT_NONE); \
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| 110 | /* \
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| 111 | ** Fill stack memory with something that turns into an illegal \
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| 112 | ** pointer value. This will sometimes find runtime references to \
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| 113 | ** uninitialized pointers. We don't do this for solaris because we \
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| 114 | ** can use purify instead. \
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| 115 | */ \
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| 116 | if (_pr_debugStacks) { \
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| 117 | memset(ts->allocBase + REDZONE, 0xf7, ts->stackSize); \
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| 118 | } \
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| 119 | PR_END_MACRO
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| 120 | #else /* !SOLARIS */
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| 121 | #define _MD_INIT_STACK(ts,REDZONE) \
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| 122 | PR_BEGIN_MACRO \
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| 123 | (void) mprotect((void*)ts->seg->vaddr, REDZONE, PROT_NONE); \
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| 124 | (void) mprotect((void*) ((char*)ts->seg->vaddr + REDZONE + ts->stackSize),\
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| 125 | REDZONE, PROT_NONE); \
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| 126 | PR_END_MACRO
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| 127 | #endif /* !SOLARIS */
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| 128 |
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| 129 | /*
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| 130 | * _MD_CLEAR_STACK
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| 131 | * Allow access to the redzone pages; the access was turned off in
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| 132 | * _MD_INIT_STACK.
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| 133 | */
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| 134 | #define _MD_CLEAR_STACK(ts) \
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| 135 | PR_BEGIN_MACRO \
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| 136 | (void) mprotect((void*)ts->seg->vaddr, REDZONE, PROT_READ|PROT_WRITE);\
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| 137 | (void) mprotect((void*) ((char*)ts->seg->vaddr + REDZONE + ts->stackSize),\
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| 138 | REDZONE, PROT_READ|PROT_WRITE); \
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| 139 | PR_END_MACRO
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| 140 |
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| 141 | #else /* DEBUG */
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| 142 |
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| 143 | #define _MD_INIT_STACK(ts,REDZONE)
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| 144 | #define _MD_CLEAR_STACK(ts)
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| 145 |
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| 146 | #endif /* DEBUG */
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| 147 |
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| 148 | #if !defined(SOLARIS)
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| 149 |
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| 150 | #define PR_SET_INTSOFF(newval)
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| 151 |
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| 152 | #endif
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| 153 |
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| 154 | /************************************************************************/
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| 155 |
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| 156 | extern void _PR_UnixInit(void);
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| 157 |
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| 158 | /************************************************************************/
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| 159 |
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| 160 | #if !defined(HPUX_LW_TIMER)
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| 161 | #define _MD_INTERVAL_INIT()
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| 162 | #endif
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| 163 | #define _MD_INTERVAL_PER_MILLISEC() (_PR_MD_INTERVAL_PER_SEC() / 1000)
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| 164 | #define _MD_INTERVAL_PER_MICROSEC() (_PR_MD_INTERVAL_PER_SEC() / 1000000)
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| 165 |
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| 166 | /************************************************************************/
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| 167 |
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| 168 | #define _MD_ERRNO() (errno)
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| 169 | #define _MD_GET_SOCKET_ERROR() (errno)
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| 170 |
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| 171 | /************************************************************************/
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| 172 |
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| 173 | /*
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| 174 | * The standard (XPG4) gettimeofday() (from BSD) takes two arguments.
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| 175 | * On some SVR4 derivatives, gettimeofday() takes only one argument.
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| 176 | * The GETTIMEOFDAY macro is intended to hide this difference.
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| 177 | */
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| 178 | #ifdef HAVE_SVID_GETTOD
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| 179 | #define GETTIMEOFDAY(tp) gettimeofday(tp)
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| 180 | #else
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| 181 | #define GETTIMEOFDAY(tp) gettimeofday((tp), NULL)
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| 182 | #endif
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| 183 |
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| 184 | #endif /* prunixos_h___ */
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