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Diffstat (limited to '')
| -rw-r--r-- | sal/osl/w32/thread.cxx | 555 |
1 files changed, 555 insertions, 0 deletions
diff --git a/sal/osl/w32/thread.cxx b/sal/osl/w32/thread.cxx new file mode 100644 index 000000000..19479de03 --- /dev/null +++ b/sal/osl/w32/thread.cxx @@ -0,0 +1,555 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 . + */ + +#include "system.h" +#include "thread.hxx" + +#include <osl/diagnose.h> +#include <osl/thread.h> +#include <rtl/alloc.h> +#include <osl/time.h> +#include <osl/interlck.h> +#include <rtl/tencinfo.h> +#include <errno.h> + +namespace { + +/** + Thread-data structure hidden behind oslThread: + */ +typedef struct +{ + HANDLE m_hThread; /* OS-handle used for all thread-functions */ + unsigned m_ThreadId; /* identifier for this thread */ + sal_Int32 m_nTerminationRequested; + oslWorkerFunction m_WorkerFunction; + void* m_pData; + +} osl_TThreadImpl; + +} + +static unsigned __stdcall oslWorkerWrapperFunction(void* pData); +static oslThread oslCreateThread(oslWorkerFunction pWorker, void* pThreadData, sal_uInt32 nFlags); + +static unsigned __stdcall oslWorkerWrapperFunction(void* pData) +{ + osl_TThreadImpl* pThreadImpl= static_cast<osl_TThreadImpl*>(pData); + + /* Initialize COM - Multi Threaded Apartment (MTA) for all threads */ + CoInitializeEx(nullptr, COINIT_MULTITHREADED); /* spawned by oslCreateThread */ + + /* call worker-function with data */ + + pThreadImpl->m_WorkerFunction(pThreadImpl->m_pData); + + CoUninitialize(); + + return 0; +} + +static oslThread oslCreateThread(oslWorkerFunction pWorker, + void* pThreadData, + sal_uInt32 nFlags) +{ + osl_TThreadImpl* pThreadImpl; + + /* alloc mem. for our internal data structure */ + pThreadImpl= static_cast<osl_TThreadImpl *>(malloc(sizeof(osl_TThreadImpl))); + + OSL_ASSERT(pThreadImpl); + + if ( pThreadImpl == nullptr ) + { + return nullptr; + } + + pThreadImpl->m_WorkerFunction= pWorker; + pThreadImpl->m_pData= pThreadData; + pThreadImpl->m_nTerminationRequested= 0; + + pThreadImpl->m_hThread= + reinterpret_cast<HANDLE>(_beginthreadex(nullptr, /* no security */ + 0, /* default stack-size */ + oslWorkerWrapperFunction, /* worker-function */ + pThreadImpl, /* provide worker-function with data */ + nFlags, /* start thread immediately or suspended */ + &pThreadImpl->m_ThreadId)); + + if(pThreadImpl->m_hThread == nullptr) + { + switch (errno) + { + case EAGAIN: + fprintf(stderr, "_beginthreadex errno EAGAIN\n"); + break; + case EINVAL: + fprintf(stderr, "_beginthreadex errno EINVAL\n"); + break; + case EACCES: + fprintf(stderr, "_beginthreadex errno EACCES\n"); + break; + case ENOMEM: + fprintf(stderr, "_beginthreadex undocumented errno ENOMEM - this means not enough VM for stack\n"); + break; + default: + fprintf(stderr, "_beginthreadex unexpected errno %d\n", errno); + break; + } + + /* create failed */ + free(pThreadImpl); + return nullptr; + } + + return pThreadImpl; +} + +oslThread SAL_CALL osl_createThread(oslWorkerFunction pWorker, + void* pThreadData) +{ + return oslCreateThread(pWorker, pThreadData, 0); +} + +oslThread SAL_CALL osl_createSuspendedThread(oslWorkerFunction pWorker, + void* pThreadData) +{ + return oslCreateThread(pWorker, pThreadData, CREATE_SUSPENDED); +} + +oslThreadIdentifier SAL_CALL osl_getThreadIdentifier(oslThread Thread) +{ + osl_TThreadImpl* pThreadImpl= static_cast<osl_TThreadImpl*>(Thread); + + if (pThreadImpl != nullptr) + return static_cast<oslThreadIdentifier>(pThreadImpl->m_ThreadId); + else + return static_cast<oslThreadIdentifier>(GetCurrentThreadId()); +} + +void SAL_CALL osl_destroyThread(oslThread Thread) +{ + osl_TThreadImpl* pThreadImpl= static_cast<osl_TThreadImpl*>(Thread); + + if (Thread == nullptr) /* valid ptr? */ + { + /* thread already destroyed or not created */ + return; + } + + /* !!!! _exitthreadex does _not_ call CloseHandle !!! */ + CloseHandle( pThreadImpl->m_hThread ); + + /* free memory */ + free(Thread); +} + +void SAL_CALL osl_resumeThread(oslThread Thread) +{ + osl_TThreadImpl* pThreadImpl= static_cast<osl_TThreadImpl*>(Thread); + + OSL_ASSERT(pThreadImpl); /* valid ptr? */ + + ResumeThread(pThreadImpl->m_hThread); +} + +void SAL_CALL osl_suspendThread(oslThread Thread) +{ + osl_TThreadImpl* pThreadImpl= static_cast<osl_TThreadImpl*>(Thread); + + OSL_ASSERT(pThreadImpl); /* valid ptr? */ + + SuspendThread(pThreadImpl->m_hThread); +} + +void SAL_CALL osl_setThreadPriority(oslThread Thread, + oslThreadPriority Priority) +{ + int winPriority; + osl_TThreadImpl* pThreadImpl= static_cast<osl_TThreadImpl*>(Thread); + + OSL_ASSERT(pThreadImpl); /* valid ptr? */ + + /* map enum to WIN32 levels + it would be faster and more elegant to preset + the enums, but that would require an #ifdef in + the exported header, which is not desired. + */ + switch(Priority) { + + case osl_Thread_PriorityHighest: + winPriority= THREAD_PRIORITY_HIGHEST; + break; + + case osl_Thread_PriorityAboveNormal: + winPriority= THREAD_PRIORITY_ABOVE_NORMAL; + break; + + case osl_Thread_PriorityNormal: + winPriority= THREAD_PRIORITY_NORMAL; + break; + + case osl_Thread_PriorityBelowNormal: + winPriority= THREAD_PRIORITY_BELOW_NORMAL; + break; + + case osl_Thread_PriorityLowest: + winPriority= THREAD_PRIORITY_LOWEST; + break; + + case osl_Thread_PriorityUnknown: + OSL_ASSERT(FALSE); /* only fools try this...*/ + + /* let release-version behave friendly */ + return; + + default: + OSL_ASSERT(FALSE); /* enum expanded, but forgotten here...*/ + + /* let release-version behave friendly */ + return; + } + + SetThreadPriority(pThreadImpl->m_hThread, winPriority); +} + +oslThreadPriority SAL_CALL osl_getThreadPriority(const oslThread Thread) +{ + int winPriority; + oslThreadPriority Priority; + + osl_TThreadImpl* pThreadImpl= static_cast<osl_TThreadImpl*>(Thread); + + /* invalid arguments ?*/ + if(pThreadImpl==nullptr || pThreadImpl->m_hThread==nullptr) + { + return osl_Thread_PriorityUnknown; + } + + winPriority= + GetThreadPriority(pThreadImpl->m_hThread); + + if(winPriority == THREAD_PRIORITY_ERROR_RETURN) + { + return osl_Thread_PriorityUnknown; + } + + /* map WIN32 priority to enum */ + switch(winPriority) + { + case THREAD_PRIORITY_TIME_CRITICAL: + case THREAD_PRIORITY_HIGHEST: + Priority= osl_Thread_PriorityHighest; + break; + + case THREAD_PRIORITY_ABOVE_NORMAL: + Priority= osl_Thread_PriorityAboveNormal; + break; + + case THREAD_PRIORITY_NORMAL: + Priority= osl_Thread_PriorityNormal; + break; + + case THREAD_PRIORITY_BELOW_NORMAL: + Priority= osl_Thread_PriorityBelowNormal; + break; + + case THREAD_PRIORITY_IDLE: + case THREAD_PRIORITY_LOWEST: + Priority= osl_Thread_PriorityLowest; + break; + + default: + OSL_ASSERT(FALSE); /* WIN32 API changed, incorporate new prio-level! */ + + /* release-version behaves friendly */ + Priority= osl_Thread_PriorityUnknown; + } + + return Priority; +} + +sal_Bool SAL_CALL osl_isThreadRunning(const oslThread Thread) +{ + osl_TThreadImpl* pThreadImpl= static_cast<osl_TThreadImpl*>(Thread); + + /* invalid arguments ?*/ + if(pThreadImpl==nullptr || pThreadImpl->m_hThread==nullptr) + { + return false; + } + + return WaitForSingleObject(pThreadImpl->m_hThread, 0) != WAIT_OBJECT_0; +} + +void SAL_CALL osl_joinWithThread(oslThread Thread) +{ + osl_TThreadImpl* pThreadImpl= static_cast<osl_TThreadImpl*>(Thread); + + /* invalid arguments?*/ + if(pThreadImpl==nullptr || pThreadImpl->m_hThread==nullptr) + { + /* assume thread is not running */ + return; + } + + WaitForSingleObject(pThreadImpl->m_hThread, INFINITE); +} + +void SAL_CALL osl_waitThread(const TimeValue* pDelay) +{ + if (pDelay) + { + DWORD millisecs = pDelay->Seconds * 1000L + pDelay->Nanosec / 1000000L; + + Sleep(millisecs); + } +} + +void SAL_CALL osl_terminateThread(oslThread Thread) +{ + osl_TThreadImpl* pThreadImpl= static_cast<osl_TThreadImpl*>(Thread); + + /* invalid arguments?*/ + if (pThreadImpl==nullptr || pThreadImpl->m_hThread==nullptr) + { + /* assume thread is not running */ + return; + } + + osl_atomic_increment(&(pThreadImpl->m_nTerminationRequested)); +} + +sal_Bool SAL_CALL osl_scheduleThread(oslThread Thread) +{ + osl_TThreadImpl* pThreadImpl= static_cast<osl_TThreadImpl*>(Thread); + + osl_yieldThread(); + + /* invalid arguments?*/ + if (pThreadImpl==nullptr || pThreadImpl->m_hThread==nullptr) + { + /* assume thread is not running */ + return false; + } + + return 0 == pThreadImpl->m_nTerminationRequested; +} + +void SAL_CALL osl_yieldThread(void) +{ + Sleep(0); +} + +void SAL_CALL osl_setThreadName(char const * name) { +#ifdef _MSC_VER + /* See <http://msdn.microsoft.com/en-us/library/xcb2z8hs.aspx>: */ +#pragma pack(push, 8) + struct { + DWORD dwType; + LPCSTR szName; + DWORD dwThreadID; + DWORD dwFlags; + } info; +#pragma pack(pop) + info.dwType = 0x1000; + info.szName = name; + info.dwThreadID = DWORD(-1); + info.dwFlags = 0; + __try { + RaiseException( + 0x406D1388, 0, sizeof info / sizeof (ULONG_PTR), + reinterpret_cast<ULONG_PTR *>(&info)); + } __except (EXCEPTION_EXECUTE_HANDLER) {} +#else + (void) name; +#endif +} + +namespace { + +typedef struct TLS_ +{ + DWORD dwIndex; + oslThreadKeyCallbackFunction pfnCallback; + struct TLS_ *pNext, *pPrev; +} TLS, *PTLS; + +} + +static PTLS g_pThreadKeyList = nullptr; +CRITICAL_SECTION g_ThreadKeyListCS; + +static void AddKeyToList( PTLS pTls ) +{ + if ( pTls ) + { + EnterCriticalSection( &g_ThreadKeyListCS ); + + pTls->pNext = g_pThreadKeyList; + pTls->pPrev = nullptr; + + if ( g_pThreadKeyList ) + g_pThreadKeyList->pPrev = pTls; + + g_pThreadKeyList = pTls; + + LeaveCriticalSection( &g_ThreadKeyListCS ); + } +} + +static void RemoveKeyFromList( PTLS pTls ) +{ + if ( pTls ) + { + EnterCriticalSection( &g_ThreadKeyListCS ); + if ( pTls->pPrev ) + pTls->pPrev->pNext = pTls->pNext; + else + { + OSL_ASSERT( pTls == g_pThreadKeyList ); + g_pThreadKeyList = pTls->pNext; + } + + if ( pTls->pNext ) + pTls->pNext->pPrev = pTls->pPrev; + LeaveCriticalSection( &g_ThreadKeyListCS ); + } +} + +void osl_callThreadKeyCallbackOnThreadDetach(void) +{ + PTLS pTls; + + EnterCriticalSection( &g_ThreadKeyListCS ); + pTls = g_pThreadKeyList; + while ( pTls ) + { + if ( pTls->pfnCallback ) + { + void *pValue = TlsGetValue( pTls->dwIndex ); + + if ( pValue ) + pTls->pfnCallback( pValue ); + } + + pTls = pTls->pNext; + } + LeaveCriticalSection( &g_ThreadKeyListCS ); +} + +oslThreadKey SAL_CALL osl_createThreadKey(oslThreadKeyCallbackFunction pCallback) +{ + PTLS pTls = static_cast<PTLS>(malloc( sizeof(TLS) )); + + if ( pTls ) + { + pTls->pfnCallback = pCallback; + if ( DWORD(-1) == (pTls->dwIndex = TlsAlloc()) ) + { + free( pTls ); + pTls = nullptr; + } + else + AddKeyToList( pTls ); + } + + return pTls; +} + +void SAL_CALL osl_destroyThreadKey(oslThreadKey Key) +{ + if (Key != nullptr) + { + PTLS pTls = static_cast<PTLS>(Key); + + RemoveKeyFromList( pTls ); + TlsFree( pTls->dwIndex ); + free( pTls ); + } +} + +void* SAL_CALL osl_getThreadKeyData(oslThreadKey Key) +{ + if (Key != nullptr) + { + PTLS pTls = static_cast<PTLS>(Key); + + return TlsGetValue( pTls->dwIndex ); + } + + return nullptr; +} + +sal_Bool SAL_CALL osl_setThreadKeyData(oslThreadKey Key, void *pData) +{ + if (Key != nullptr) + { + PTLS pTls = static_cast<PTLS>(Key); + void* pOldData = nullptr; + bool fSuccess; + + if ( pTls->pfnCallback ) + pOldData = TlsGetValue( pTls->dwIndex ); + + fSuccess = TlsSetValue( pTls->dwIndex, pData ); + + if ( fSuccess && pTls->pfnCallback && pOldData ) + pTls->pfnCallback( pOldData ); + + return fSuccess; + } + + return false; +} + +DWORD g_dwTLSTextEncodingIndex = DWORD(-1); + +rtl_TextEncoding SAL_CALL osl_getThreadTextEncoding(void) +{ + DWORD_PTR dwEncoding; + rtl_TextEncoding _encoding; + bool gotACP; + + if ( DWORD(-1) == g_dwTLSTextEncodingIndex ) + g_dwTLSTextEncodingIndex = TlsAlloc(); + + dwEncoding = reinterpret_cast<DWORD_PTR>(TlsGetValue( g_dwTLSTextEncodingIndex )); + _encoding = LOWORD(dwEncoding); + gotACP = HIWORD(dwEncoding); + + if ( !gotACP ) + { + _encoding = rtl_getTextEncodingFromWindowsCodePage( GetACP() ); + TlsSetValue( g_dwTLSTextEncodingIndex, reinterpret_cast<LPVOID>(static_cast<DWORD_PTR>(MAKELONG( _encoding, TRUE ))) ); + } + + return _encoding; +} + +rtl_TextEncoding SAL_CALL osl_setThreadTextEncoding( rtl_TextEncoding Encoding ) +{ + rtl_TextEncoding oldEncoding = osl_getThreadTextEncoding(); + + TlsSetValue( g_dwTLSTextEncodingIndex, reinterpret_cast<LPVOID>(static_cast<DWORD_PTR>(MAKELONG( Encoding, TRUE))) ); + + return oldEncoding; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |