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fff98f6316
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3693 d0543943-73ff-0310-b7d9-9358b9ac24b2
287 lines
7.5 KiB
C
287 lines
7.5 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Netscape Portable Runtime (NSPR).
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "primpl.h"
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void _MD_EarlyInit(void)
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{
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}
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PRWord *_MD_HomeGCRegisters(PRThread *t, int isCurrent, int *np)
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{
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#ifndef _PR_PTHREADS
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if (isCurrent) {
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(void) setjmp(CONTEXT(t));
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}
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*np = sizeof(CONTEXT(t)) / sizeof(PRWord);
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return (PRWord *) CONTEXT(t);
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#else
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*np = 0;
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return NULL;
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#endif
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}
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#ifndef _PR_PTHREADS
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void
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_MD_SET_PRIORITY(_MDThread *thread, PRUintn newPri)
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{
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return;
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}
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PRStatus
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_MD_InitializeThread(PRThread *thread)
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{
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return PR_SUCCESS;
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}
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PRStatus
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_MD_WAIT(PRThread *thread, PRIntervalTime ticks)
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{
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PR_ASSERT(!(thread->flags & _PR_GLOBAL_SCOPE));
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_PR_MD_SWITCH_CONTEXT(thread);
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return PR_SUCCESS;
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}
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PRStatus
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_MD_WAKEUP_WAITER(PRThread *thread)
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{
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if (thread) {
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PR_ASSERT(!(thread->flags & _PR_GLOBAL_SCOPE));
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}
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return PR_SUCCESS;
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}
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/* These functions should not be called for OSF1 */
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void
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_MD_YIELD(void)
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{
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PR_NOT_REACHED("_MD_YIELD should not be called for OSF1.");
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}
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PRStatus
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_MD_CREATE_THREAD(
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PRThread *thread,
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void (*start) (void *),
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PRThreadPriority priority,
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PRThreadScope scope,
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PRThreadState state,
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PRUint32 stackSize)
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{
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PR_NOT_REACHED("_MD_CREATE_THREAD should not be called for OSF1.");
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return PR_FAILURE;
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}
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#endif /* ! _PR_PTHREADS */
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#ifdef _PR_HAVE_ATOMIC_CAS
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#include <c_asm.h>
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#define _PR_OSF_ATOMIC_LOCK 1
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void
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PR_StackPush(PRStack *stack, PRStackElem *stack_elem)
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{
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long locked;
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do {
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while ((long) stack->prstk_head.prstk_elem_next ==
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_PR_OSF_ATOMIC_LOCK)
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;
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locked = __ATOMIC_EXCH_QUAD(&stack->prstk_head.prstk_elem_next,
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_PR_OSF_ATOMIC_LOCK);
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} while (locked == _PR_OSF_ATOMIC_LOCK);
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stack_elem->prstk_elem_next = (PRStackElem *) locked;
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/*
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* memory-barrier instruction
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*/
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asm("mb");
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stack->prstk_head.prstk_elem_next = stack_elem;
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}
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PRStackElem *
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PR_StackPop(PRStack *stack)
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{
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PRStackElem *element;
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long locked;
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do {
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while ((long)stack->prstk_head.prstk_elem_next == _PR_OSF_ATOMIC_LOCK)
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;
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locked = __ATOMIC_EXCH_QUAD(&stack->prstk_head.prstk_elem_next,
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_PR_OSF_ATOMIC_LOCK);
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} while (locked == _PR_OSF_ATOMIC_LOCK);
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element = (PRStackElem *) locked;
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if (element == NULL) {
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stack->prstk_head.prstk_elem_next = NULL;
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} else {
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stack->prstk_head.prstk_elem_next =
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element->prstk_elem_next;
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}
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/*
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* memory-barrier instruction
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*/
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asm("mb");
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return element;
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}
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#endif /* _PR_HAVE_ATOMIC_CAS */
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/*
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** thread_suspend and thread_resume are used by the gc code
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** in nsprpub/pr/src/pthreads/ptthread.c
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**
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** These routines are never called for the current thread, and
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** there is no check for that - so beware!
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*/
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int thread_suspend(PRThread *thr_id) {
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extern int pthread_suspend_np (
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pthread_t thread,
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__pthreadLongUint_t *regs,
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void *spare);
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__pthreadLongUint_t regs[34];
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int res;
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/*
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** A return res < 0 indicates that the thread was suspended
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** but register information could not be obtained
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*/
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res = pthread_suspend_np(thr_id->id,®s[0],0);
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if (res==0)
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thr_id->sp = (void *) regs[30];
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thr_id->suspend |= PT_THREAD_SUSPENDED;
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/* Always succeeds */
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return 0;
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}
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int thread_resume(PRThread *thr_id) {
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extern int pthread_resume_np(pthread_t thread);
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int res;
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res = pthread_resume_np (thr_id->id);
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thr_id->suspend |= PT_THREAD_RESUMED;
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return 0;
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}
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/*
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** Stubs for nspr_symvec.opt
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**
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** PR_ResumeSet, PR_ResumeTest, and PR_SuspendAllSuspended
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** (defined in ptthread.c) used to be exported by mistake
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** (because they look like public functions). They have been
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** converted into static functions.
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**
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** There is an existing third-party binary that uses NSPR: the
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** Java plugin for Mozilla. Because it is part of the Java
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** SDK, we have no control over its releases. So we need these
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** stub functions to occupy the slots that used to be occupied
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** by PR_ResumeSet, PR_ResumeTest, and PR_SuspendAllSuspended
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** in the symbol vector so that LIBNSPR4 is backward compatible.
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**
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** The Java plugin was also using PR_CreateThread which we didn't
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** realise and hadn't "nailed down". So we now need to nail it down
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** to its Mozilla 1.1 position and have to insert 51 additional stubs
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** in order to achive this (stubs 4-54).
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**
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** Over time some of these stubs will get reused by new symbols.
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** - Stub54 is replaced by LL_MaxUint
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*/
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void PR_VMS_Stub1(void) { }
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void PR_VMS_Stub2(void) { }
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void PR_VMS_Stub3(void) { }
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void PR_VMS_Stub4(void) { }
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void PR_VMS_Stub5(void) { }
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void PR_VMS_Stub6(void) { }
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void PR_VMS_Stub7(void) { }
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void PR_VMS_Stub8(void) { }
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void PR_VMS_Stub9(void) { }
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void PR_VMS_Stub10(void) { }
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void PR_VMS_Stub11(void) { }
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void PR_VMS_Stub12(void) { }
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void PR_VMS_Stub13(void) { }
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void PR_VMS_Stub14(void) { }
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void PR_VMS_Stub15(void) { }
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void PR_VMS_Stub16(void) { }
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void PR_VMS_Stub17(void) { }
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void PR_VMS_Stub18(void) { }
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void PR_VMS_Stub19(void) { }
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void PR_VMS_Stub20(void) { }
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void PR_VMS_Stub21(void) { }
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void PR_VMS_Stub22(void) { }
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void PR_VMS_Stub23(void) { }
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void PR_VMS_Stub24(void) { }
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void PR_VMS_Stub25(void) { }
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void PR_VMS_Stub26(void) { }
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void PR_VMS_Stub27(void) { }
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void PR_VMS_Stub28(void) { }
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void PR_VMS_Stub29(void) { }
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void PR_VMS_Stub30(void) { }
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void PR_VMS_Stub31(void) { }
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void PR_VMS_Stub32(void) { }
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void PR_VMS_Stub33(void) { }
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void PR_VMS_Stub34(void) { }
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void PR_VMS_Stub35(void) { }
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void PR_VMS_Stub36(void) { }
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void PR_VMS_Stub37(void) { }
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void PR_VMS_Stub38(void) { }
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void PR_VMS_Stub39(void) { }
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void PR_VMS_Stub40(void) { }
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void PR_VMS_Stub41(void) { }
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void PR_VMS_Stub42(void) { }
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void PR_VMS_Stub43(void) { }
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void PR_VMS_Stub44(void) { }
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void PR_VMS_Stub45(void) { }
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void PR_VMS_Stub46(void) { }
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void PR_VMS_Stub47(void) { }
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void PR_VMS_Stub48(void) { }
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void PR_VMS_Stub49(void) { }
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void PR_VMS_Stub50(void) { }
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void PR_VMS_Stub51(void) { }
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void PR_VMS_Stub52(void) { }
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void PR_VMS_Stub53(void) { }
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