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freebsd.c
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is the Netscape Portable Runtime (NSPR).
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998-2000
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
00030  * use your version of this file under the terms of the MPL, indicate your
00031  * decision by deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #include "primpl.h"
00039 
00040 #include <signal.h>
00041 
00042 void _MD_EarlyInit(void)
00043 {
00044     /*
00045      * Ignore FPE because coercion of a NaN to an int causes SIGFPE
00046      * to be raised.
00047      */
00048     struct sigaction act;
00049 
00050     act.sa_handler = SIG_IGN;
00051     sigemptyset(&act.sa_mask);
00052     act.sa_flags = SA_RESTART;
00053     sigaction(SIGFPE, &act, 0);
00054 }
00055 
00056 PRWord *_MD_HomeGCRegisters(PRThread *t, int isCurrent, int *np)
00057 {
00058 #ifndef _PR_PTHREADS
00059     if (isCurrent) {
00060        (void) sigsetjmp(CONTEXT(t), 1);
00061     }
00062     *np = sizeof(CONTEXT(t)) / sizeof(PRWord);
00063     return (PRWord *) CONTEXT(t);
00064 #else
00065        *np = 0;
00066        return NULL;
00067 #endif
00068 }
00069 
00070 #ifndef _PR_PTHREADS
00071 void
00072 _MD_SET_PRIORITY(_MDThread *thread, PRUintn newPri)
00073 {
00074     return;
00075 }
00076 
00077 PRStatus
00078 _MD_InitializeThread(PRThread *thread)
00079 {
00080        return PR_SUCCESS;
00081 }
00082 
00083 PRStatus
00084 _MD_WAIT(PRThread *thread, PRIntervalTime ticks)
00085 {
00086     PR_ASSERT(!(thread->flags & _PR_GLOBAL_SCOPE));
00087     _PR_MD_SWITCH_CONTEXT(thread);
00088     return PR_SUCCESS;
00089 }
00090 
00091 PRStatus
00092 _MD_WAKEUP_WAITER(PRThread *thread)
00093 {
00094     if (thread) {
00095        PR_ASSERT(!(thread->flags & _PR_GLOBAL_SCOPE));
00096     }
00097     return PR_SUCCESS;
00098 }
00099 
00100 /* These functions should not be called for FreeBSD */
00101 void
00102 _MD_YIELD(void)
00103 {
00104     PR_NOT_REACHED("_MD_YIELD should not be called for FreeBSD.");
00105 }
00106 
00107 PRStatus
00108 _MD_CREATE_THREAD(
00109     PRThread *thread,
00110     void (*start) (void *),
00111     PRThreadPriority priority,
00112     PRThreadScope scope,
00113     PRThreadState state,
00114     PRUint32 stackSize)
00115 {
00116     PR_NOT_REACHED("_MD_CREATE_THREAD should not be called for FreeBSD.");
00117        return PR_FAILURE;
00118 }
00119 #endif /* ! _PR_PTHREADS */