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File: [Pegasus] / pegasus / src / Pegasus / Common / Threads.h
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Revision: 1.1.2.2, Fri Jul 28 16:41:27 2006 UTC (17 years, 11 months ago) by mike Branch: TASK_BUG_5314_IPC_REFACTORING_BRANCH Changes since 1.1.2.1: +66 -45 lines BUG#: 5314 TITLE: IPC Refactoring DESCRIPTION: IPC Refactoring Branch Work |
//%2006//////////////////////////////////////////////////////////////////////// // // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems. // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.; // IBM Corp.; EMC Corporation, The Open Group. // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.; // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group. // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.; // EMC Corporation; VERITAS Software Corporation; The Open Group. // Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.; // EMC Corporation; Symantec Corporation; The Open Group. // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to // deal in the Software without restriction, including without limitation the // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or // sell copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. // //============================================================================== // // Author: Mike Brasher (m.brasher@inovadevelopment.com) // //%///////////////////////////////////////////////////////////////////////////// #ifndef Pegasus_Threads_h #define Pegasus_Threads_h #include <cstring> #include <Pegasus/Common/Config.h> #include <Pegasus/Common/Linkage.h> #if defined(PEGASUS_HAVE_PTHREADS) # if defined(PEGASUS_PLATFORM_OS400_ISERIES_IBM) # define _MULTI_THREADED // Is this really necessary? # endif # include <pthread.h> # include <errno.h> # include <sys/time.h> #elif defined(PEGASUS_HAVE_WINDOWS_THREADS) # include <windows.h> #else # error "<Pegasus/Common/Threads.h>: not implemented" #endif PEGASUS_NAMESPACE_BEGIN //============================================================================== // // PEGASUS_THREAD_CDECL // //============================================================================== #if defined(PEGASUS_PLATFORM_WIN32_IX86_MSVC) # define PEGASUS_THREAD_CDECL __stdcall #else # define PEGASUS_THREAD_CDECL /* empty */ #endif //============================================================================== // // Thread-related type definitions // //============================================================================== #if defined(PEGASUS_HAVE_PTHREADS) struct ThreadType { public: ThreadType() { clear(); } ThreadType(const ThreadType& x) : _thread(x._thread), _id(x._id) { } ThreadType(pthread_t thread, Uint32 id) : _thread(thread), _id(id) { } ThreadType& operator=(const ThreadType& x) { if (&x != this) { _id = x._id; _thread = x._thread; } return *this; } void clear() { memset(this, 0, sizeof(*this)); } pthread_t thread() const { return _thread; } Uint32 id() const { return _id; } void print() const { printf("ThreadType(%lu, %lu)\n", _thread, (unsigned long)_id); } private: pthread_t _thread; // And id of zero indicates a null object. 1 indicates the main thread. Uint32 _id; }; typedef void* ThreadReturnType; #endif #if defined(PEGASUS_HAVE_WINDOWS_THREADS) typedef HANDLE ThreadType; typedef unsigned ThreadReturnType; #endif //============================================================================== // // ThreadHandle // //============================================================================== #if defined(PEGASUS_HAVE_PTHREADS) struct ThreadHandle { ThreadType thid; pthread_attr_t thatt; }; #elif defined(PEGASUS_HAVE_WINDOWS_THREADS) struct ThreadHandle { ThreadType thid; void * thatt; }; #endif //============================================================================== // // Threads // //============================================================================== class PEGASUS_COMMON_LINKAGE Threads { public: enum Type { DETACHED, JOINABLE }; static int create( ThreadType& thread, Type type, void* (*start)(void*), void* arg); static ThreadType self(); static bool equal(ThreadType x, ThreadType y); static void exit(ThreadReturnType rc); static void cancel(ThreadType th, ThreadReturnType rc); static void yield(); static void sleep(int msec); static void cleanup_push(void (*start)(void*), void* arg); static void cleanup_pop(int execute); }; //============================================================================== // // POSIX Threads Implementation // //============================================================================== #if defined(PEGASUS_HAVE_PTHREADS) inline bool Threads::equal(ThreadType x, ThreadType y) { return pthread_equal(x.thread(), y.thread()); } inline void Threads::exit(ThreadReturnType rc) { pthread_exit(rc); } inline void Threads::cancel(ThreadType th, ThreadReturnType rc) { pthread_cancel(th.thread()); } inline void Threads::yield() { #if defined(PEGASUS_PLATFORM_AIX_RS_IBMCXX) || \ defined(PEGASUS_PLATFORM_HPUX_ACC) || \ defined(PEGASUS_PLATFORM_OS400_ISERIES_IBM) || \ defined(PEGASUS_PLATFORM_TRU64_ALPHA_DECCXX) || \ defined(PEGASUS_OS_VMS) sched_yield(); #else pthread_yield(); #endif } inline void Threads::cleanup_push(void (*func)(void*), void* arg) { // ATTN: it is doubtful whether cleanup handlers ever really worked. // They are only used in two places and not used in many other // places where mutexes are obtained. Further, they are only // implemented correctly on one or two platforms. For now, we // will defer their implementation until we can find a way to // implement them on all platforms (using thread local storage). } inline void Threads::cleanup_pop(int execute) { // ATTN: not implemented. } #endif /* defined(PEGASUS_HAVE_PTHREADS) */ //============================================================================== // // Windows Threads Implementation // //============================================================================== #if defined(PEGASUS_HAVE_WINDOWS_THREADS) inline ThreadType Threads::self() { return ThreadType(GetCurrentThreadId()); } inline bool Threads::equal(ThreadType x, ThreadType y) { return x == y; } inline void Threads::exit(ThreadReturnType rc) { _endthreadex(rc); } inline void Threads::cancel(ThreadType th, ThreadReturnType rc) { TerminateThread(th, rc); } inline void Threads::yield() { Sleep(0); } inline void Threads::cleanup_push(void (*func)(void*), void* arg) { // ATTN: Not implemented on Windows. } inline void Threads::cleanup_pop(int execute) { // ATTN: Not implemented on Windows. } #endif /* defined(PEGASUS_HAVE_WINDOWS_THREADS) */ PEGASUS_NAMESPACE_END #endif /* Pegasus_Threads_h */
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