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Diffstat (limited to '')
| -rw-r--r-- | src/libs/xpcom18a4/nsprpub/pr/src/md/unix/openvms.c | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/nsprpub/pr/src/md/unix/openvms.c b/src/libs/xpcom18a4/nsprpub/pr/src/md/unix/openvms.c new file mode 100644 index 00000000..20b4f708 --- /dev/null +++ b/src/libs/xpcom18a4/nsprpub/pr/src/md/unix/openvms.c @@ -0,0 +1,286 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is the Netscape Portable Runtime (NSPR). + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998-2000 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either the GNU General Public License Version 2 or later (the "GPL"), or + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +#include "primpl.h" + +void _MD_EarlyInit(void) +{ +} + +PRWord *_MD_HomeGCRegisters(PRThread *t, int isCurrent, int *np) +{ +#ifndef _PR_PTHREADS + if (isCurrent) { + (void) setjmp(CONTEXT(t)); + } + *np = sizeof(CONTEXT(t)) / sizeof(PRWord); + return (PRWord *) CONTEXT(t); +#else + *np = 0; + return NULL; +#endif +} + +#ifndef _PR_PTHREADS +void +_MD_SET_PRIORITY(_MDThread *thread, PRUintn newPri) +{ + return; +} + +PRStatus +_MD_InitializeThread(PRThread *thread) +{ + return PR_SUCCESS; +} + +PRStatus +_MD_WAIT(PRThread *thread, PRIntervalTime ticks) +{ + PR_ASSERT(!(thread->flags & _PR_GLOBAL_SCOPE)); + _PR_MD_SWITCH_CONTEXT(thread); + return PR_SUCCESS; +} + +PRStatus +_MD_WAKEUP_WAITER(PRThread *thread) +{ + if (thread) { + PR_ASSERT(!(thread->flags & _PR_GLOBAL_SCOPE)); + } + return PR_SUCCESS; +} + +/* These functions should not be called for OSF1 */ +void +_MD_YIELD(void) +{ + PR_NOT_REACHED("_MD_YIELD should not be called for OSF1."); +} + +PRStatus +_MD_CREATE_THREAD( + PRThread *thread, + void (*start) (void *), + PRThreadPriority priority, + PRThreadScope scope, + PRThreadState state, + PRUint32 stackSize) +{ + PR_NOT_REACHED("_MD_CREATE_THREAD should not be called for OSF1."); + return PR_FAILURE; +} +#endif /* ! _PR_PTHREADS */ + +#ifdef _PR_HAVE_ATOMIC_CAS + +#include <c_asm.h> + +#define _PR_OSF_ATOMIC_LOCK 1 + +void +PR_StackPush(PRStack *stack, PRStackElem *stack_elem) +{ +long locked; + + do { + while ((long) stack->prstk_head.prstk_elem_next == + _PR_OSF_ATOMIC_LOCK) + ; + locked = __ATOMIC_EXCH_QUAD(&stack->prstk_head.prstk_elem_next, + _PR_OSF_ATOMIC_LOCK); + + } while (locked == _PR_OSF_ATOMIC_LOCK); + stack_elem->prstk_elem_next = (PRStackElem *) locked; + /* + * memory-barrier instruction + */ + asm("mb"); + stack->prstk_head.prstk_elem_next = stack_elem; +} + +PRStackElem * +PR_StackPop(PRStack *stack) +{ +PRStackElem *element; +long locked; + + do { + while ((long)stack->prstk_head.prstk_elem_next == _PR_OSF_ATOMIC_LOCK) + ; + locked = __ATOMIC_EXCH_QUAD(&stack->prstk_head.prstk_elem_next, + _PR_OSF_ATOMIC_LOCK); + + } while (locked == _PR_OSF_ATOMIC_LOCK); + + element = (PRStackElem *) locked; + + if (element == NULL) { + stack->prstk_head.prstk_elem_next = NULL; + } else { + stack->prstk_head.prstk_elem_next = + element->prstk_elem_next; + } + /* + * memory-barrier instruction + */ + asm("mb"); + return element; +} +#endif /* _PR_HAVE_ATOMIC_CAS */ + + +/* +** thread_suspend and thread_resume are used by the gc code +** in nsprpub/pr/src/pthreads/ptthread.c +** +** These routines are never called for the current thread, and +** there is no check for that - so beware! +*/ +int thread_suspend(PRThread *thr_id) { + + extern int pthread_suspend_np ( + pthread_t thread, + __pthreadLongUint_t *regs, + void *spare); + + __pthreadLongUint_t regs[34]; + int res; + + /* + ** A return res < 0 indicates that the thread was suspended + ** but register information could not be obtained + */ + + res = pthread_suspend_np(thr_id->id,®s[0],0); + if (res==0) + thr_id->sp = (void *) regs[30]; + + thr_id->suspend |= PT_THREAD_SUSPENDED; + + /* Always succeeds */ + return 0; +} + +int thread_resume(PRThread *thr_id) { + extern int pthread_resume_np(pthread_t thread); + int res; + + res = pthread_resume_np (thr_id->id); + + thr_id->suspend |= PT_THREAD_RESUMED; + + return 0; +} + +/* +** Stubs for nspr_symvec.opt +** +** PR_ResumeSet, PR_ResumeTest, and PR_SuspendAllSuspended +** (defined in ptthread.c) used to be exported by mistake +** (because they look like public functions). They have been +** converted into static functions. +** +** There is an existing third-party binary that uses NSPR: the +** Java plugin for Mozilla. Because it is part of the Java +** SDK, we have no control over its releases. So we need these +** stub functions to occupy the slots that used to be occupied +** by PR_ResumeSet, PR_ResumeTest, and PR_SuspendAllSuspended +** in the symbol vector so that LIBNSPR4 is backward compatible. +** +** The Java plugin was also using PR_CreateThread which we didn't +** realise and hadn't "nailed down". So we now need to nail it down +** to its Mozilla 1.1 position and have to insert 51 additional stubs +** in order to achive this (stubs 4-54). +** +** Over time some of these stubs will get reused by new symbols. +** - Stub54 is replaced by LL_MaxUint +*/ + +void PR_VMS_Stub1(void) { } +void PR_VMS_Stub2(void) { } +void PR_VMS_Stub3(void) { } +void PR_VMS_Stub4(void) { } +void PR_VMS_Stub5(void) { } +void PR_VMS_Stub6(void) { } +void PR_VMS_Stub7(void) { } +void PR_VMS_Stub8(void) { } +void PR_VMS_Stub9(void) { } +void PR_VMS_Stub10(void) { } +void PR_VMS_Stub11(void) { } +void PR_VMS_Stub12(void) { } +void PR_VMS_Stub13(void) { } +void PR_VMS_Stub14(void) { } +void PR_VMS_Stub15(void) { } +void PR_VMS_Stub16(void) { } +void PR_VMS_Stub17(void) { } +void PR_VMS_Stub18(void) { } +void PR_VMS_Stub19(void) { } +void PR_VMS_Stub20(void) { } +void PR_VMS_Stub21(void) { } +void PR_VMS_Stub22(void) { } +void PR_VMS_Stub23(void) { } +void PR_VMS_Stub24(void) { } +void PR_VMS_Stub25(void) { } +void PR_VMS_Stub26(void) { } +void PR_VMS_Stub27(void) { } +void PR_VMS_Stub28(void) { } +void PR_VMS_Stub29(void) { } +void PR_VMS_Stub30(void) { } +void PR_VMS_Stub31(void) { } +void PR_VMS_Stub32(void) { } +void PR_VMS_Stub33(void) { } +void PR_VMS_Stub34(void) { } +void PR_VMS_Stub35(void) { } +void PR_VMS_Stub36(void) { } +void PR_VMS_Stub37(void) { } +void PR_VMS_Stub38(void) { } +void PR_VMS_Stub39(void) { } +void PR_VMS_Stub40(void) { } +void PR_VMS_Stub41(void) { } +void PR_VMS_Stub42(void) { } +void PR_VMS_Stub43(void) { } +void PR_VMS_Stub44(void) { } +void PR_VMS_Stub45(void) { } +void PR_VMS_Stub46(void) { } +void PR_VMS_Stub47(void) { } +void PR_VMS_Stub48(void) { } +void PR_VMS_Stub49(void) { } +void PR_VMS_Stub50(void) { } +void PR_VMS_Stub51(void) { } +void PR_VMS_Stub52(void) { } +void PR_VMS_Stub53(void) { } |