diff options
Diffstat (limited to 'mozilla/nsprpub/pr/src/md/windows/w95thred.c')
| -rw-r--r-- | mozilla/nsprpub/pr/src/md/windows/w95thred.c | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/mozilla/nsprpub/pr/src/md/windows/w95thred.c b/mozilla/nsprpub/pr/src/md/windows/w95thred.c new file mode 100644 index 0000000..f896626 --- /dev/null +++ b/mozilla/nsprpub/pr/src/md/windows/w95thred.c @@ -0,0 +1,316 @@ +/* -*- 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" +#include <process.h> /* for _beginthreadex() */ + +#if defined(_MSC_VER) && _MSC_VER <= 1200 +/* + * VC++ 6.0 doesn't have DWORD_PTR. + */ + +typedef DWORD DWORD_PTR; +#endif /* _MSC_VER <= 1200 */ + +/* --- globals ------------------------------------------------ */ +#ifdef _PR_USE_STATIC_TLS +__declspec(thread) struct PRThread *_pr_thread_last_run; +__declspec(thread) struct PRThread *_pr_currentThread; +__declspec(thread) struct _PRCPU *_pr_currentCPU; +#else +DWORD _pr_currentThreadIndex; +DWORD _pr_lastThreadIndex; +DWORD _pr_currentCPUIndex; +#endif +int _pr_intsOff = 0; +_PRInterruptTable _pr_interruptTable[] = { { 0 } }; + +void +_PR_MD_EARLY_INIT() +{ +#ifndef _PR_USE_STATIC_TLS + _pr_currentThreadIndex = TlsAlloc(); + _pr_lastThreadIndex = TlsAlloc(); + _pr_currentCPUIndex = TlsAlloc(); +#endif +} + +void _PR_MD_CLEANUP_BEFORE_EXIT(void) +{ + _PR_NT_FreeSids(); + + _PR_MD_CleanupSockets(); + + WSACleanup(); + +#ifndef _PR_USE_STATIC_TLS + TlsFree(_pr_currentThreadIndex); + TlsFree(_pr_lastThreadIndex); + TlsFree(_pr_currentCPUIndex); +#endif +} + +PRStatus +_PR_MD_INIT_THREAD(PRThread *thread) +{ + if (thread->flags & (_PR_PRIMORDIAL | _PR_ATTACHED)) { + /* + ** Warning: + ** -------- + ** NSPR requires a real handle to every thread. + ** GetCurrentThread() returns a pseudo-handle which + ** is not suitable for some thread operations (e.g., + ** suspending). Therefore, get a real handle from + ** the pseudo handle via DuplicateHandle(...) + */ + DuplicateHandle( + GetCurrentProcess(), /* Process of source handle */ + GetCurrentThread(), /* Pseudo Handle to dup */ + GetCurrentProcess(), /* Process of handle */ + &(thread->md.handle), /* resulting handle */ + 0L, /* access flags */ + FALSE, /* Inheritable */ + DUPLICATE_SAME_ACCESS); /* Options */ + } + + /* Create the blocking IO semaphore */ + thread->md.blocked_sema = CreateSemaphore(NULL, 0, 1, NULL); + if (thread->md.blocked_sema == NULL) + return PR_FAILURE; + else + return PR_SUCCESS; +} + +static unsigned __stdcall +pr_root(void *arg) +{ + PRThread *thread = (PRThread *)arg; + thread->md.start(thread); + return 0; +} + +PRStatus +_PR_MD_CREATE_THREAD(PRThread *thread, + void (*start)(void *), + PRThreadPriority priority, + PRThreadScope scope, + PRThreadState state, + PRUint32 stackSize) +{ + + thread->md.start = start; + thread->md.handle = (HANDLE) _beginthreadex( + NULL, + thread->stack->stackSize, + pr_root, + (void *)thread, + CREATE_SUSPENDED, + &(thread->id)); + if(!thread->md.handle) { + return PR_FAILURE; + } + + thread->md.id = thread->id; + /* + * On windows, a thread is created with a thread priority of + * THREAD_PRIORITY_NORMAL. + */ + if (priority != PR_PRIORITY_NORMAL) { + _PR_MD_SET_PRIORITY(&(thread->md), priority); + } + + /* Activate the thread */ + if ( ResumeThread( thread->md.handle ) != -1) + return PR_SUCCESS; + + return PR_FAILURE; +} + +void +_PR_MD_YIELD(void) +{ + /* Can NT really yield at all? */ + Sleep(0); +} + +void +_PR_MD_SET_PRIORITY(_MDThread *thread, PRThreadPriority newPri) +{ + int nativePri; + BOOL rv; + + if (newPri < PR_PRIORITY_FIRST) { + newPri = PR_PRIORITY_FIRST; + } else if (newPri > PR_PRIORITY_LAST) { + newPri = PR_PRIORITY_LAST; + } + switch (newPri) { + case PR_PRIORITY_LOW: + nativePri = THREAD_PRIORITY_BELOW_NORMAL; + break; + case PR_PRIORITY_NORMAL: + nativePri = THREAD_PRIORITY_NORMAL; + break; + case PR_PRIORITY_HIGH: + nativePri = THREAD_PRIORITY_ABOVE_NORMAL; + break; + case PR_PRIORITY_URGENT: + nativePri = THREAD_PRIORITY_HIGHEST; + } + rv = SetThreadPriority(thread->handle, nativePri); + PR_ASSERT(rv); + if (!rv) { + PR_LOG(_pr_thread_lm, PR_LOG_MIN, + ("PR_SetThreadPriority: can't set thread priority\n")); + } + return; +} + +void +_PR_MD_CLEAN_THREAD(PRThread *thread) +{ + BOOL rv; + + if (thread->md.blocked_sema) { + rv = CloseHandle(thread->md.blocked_sema); + PR_ASSERT(rv); + thread->md.blocked_sema = 0; + } + + if (thread->md.handle) { + rv = CloseHandle(thread->md.handle); + PR_ASSERT(rv); + thread->md.handle = 0; + } +} + +void +_PR_MD_EXIT_THREAD(PRThread *thread) +{ + _PR_MD_CLEAN_THREAD(thread); + _PR_MD_SET_CURRENT_THREAD(NULL); +} + + +void +_PR_MD_EXIT(PRIntn status) +{ + _exit(status); +} + +PRInt32 _PR_MD_SETTHREADAFFINITYMASK(PRThread *thread, PRUint32 mask ) +{ +#ifdef WINCE + SetLastError(ERROR_CALL_NOT_IMPLEMENTED); + return -1; +#else + DWORD_PTR rv; + + rv = SetThreadAffinityMask(thread->md.handle, mask); + + return rv?0:-1; +#endif +} + +PRInt32 _PR_MD_GETTHREADAFFINITYMASK(PRThread *thread, PRUint32 *mask) +{ +#ifdef WINCE + SetLastError(ERROR_CALL_NOT_IMPLEMENTED); + return -1; +#else + BOOL rv; + DWORD_PTR process_mask; + DWORD_PTR system_mask; + + rv = GetProcessAffinityMask(GetCurrentProcess(), + &process_mask, &system_mask); + if (rv) + *mask = (PRUint32)process_mask; + + return rv?0:-1; +#endif +} + +void +_PR_MD_SUSPEND_CPU(_PRCPU *cpu) +{ + _PR_MD_SUSPEND_THREAD(cpu->thread); +} + +void +_PR_MD_RESUME_CPU(_PRCPU *cpu) +{ + _PR_MD_RESUME_THREAD(cpu->thread); +} + +void +_PR_MD_SUSPEND_THREAD(PRThread *thread) +{ + if (_PR_IS_NATIVE_THREAD(thread)) { + DWORD previousSuspendCount; + /* XXXMB - SuspendThread() is not a blocking call; how do we + * know when the thread is *REALLY* suspended? + */ + previousSuspendCount = SuspendThread(thread->md.handle); + PR_ASSERT(previousSuspendCount == 0); + } +} + +void +_PR_MD_RESUME_THREAD(PRThread *thread) +{ + if (_PR_IS_NATIVE_THREAD(thread)) { + DWORD previousSuspendCount; + previousSuspendCount = ResumeThread(thread->md.handle); + PR_ASSERT(previousSuspendCount == 1); + } +} + +PRThread* +_MD_CURRENT_THREAD(void) +{ +PRThread *thread; + + thread = _MD_GET_ATTACHED_THREAD(); + + if (NULL == thread) { + thread = _PRI_AttachThread( + PR_USER_THREAD, PR_PRIORITY_NORMAL, NULL, 0); + } + PR_ASSERT(thread != NULL); + return thread; +} |