X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5b65f1364d1a643940ddd31fbd77578ff6e20639..ba86da30cf1a2a8429f3af465cbb6c9f52b307fb:/src/unix/threadpsx.cpp diff --git a/src/unix/threadpsx.cpp b/src/unix/threadpsx.cpp index 429b2a292c..db3063e48e 100644 --- a/src/unix/threadpsx.cpp +++ b/src/unix/threadpsx.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: threadpsx.cpp +// Name: src/unix/threadpsx.cpp // Purpose: wxThread (Posix) Implementation // Author: Original from Wolfram Gloger/Guilhem Lavaux // Modified by: K. S. Sreeram (2002): POSIXified wxCondition, added wxSemaphore @@ -21,29 +21,31 @@ // headers // ---------------------------------------------------------------------------- -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) - #pragma implementation "thread.h" -#endif - // for compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #if wxUSE_THREADS #include "wx/thread.h" -#include "wx/module.h" -#include "wx/utils.h" -#include "wx/log.h" -#include "wx/intl.h" -#include "wx/dynarray.h" -#include "wx/timer.h" +#include "wx/except.h" + +#ifndef WX_PRECOMP + #include "wx/app.h" + #include "wx/dynarray.h" + #include "wx/intl.h" + #include "wx/log.h" + #include "wx/utils.h" + #include "wx/timer.h" + #include "wx/stopwatch.h" + #include "wx/module.h" +#endif #include #include #include #include #include -#if HAVE_SCHED_H +#ifdef HAVE_SCHED_H #include #endif @@ -99,7 +101,7 @@ static void DeleteThread(wxThread *This); // ---------------------------------------------------------------------------- // an (non owning) array of pointers to threads -WX_DEFINE_ARRAY(wxThread *, wxArrayThread); +WX_DEFINE_ARRAY_PTR(wxThread *, wxArrayThread); // an entry for a thread we can wait for @@ -112,6 +114,9 @@ WX_DEFINE_ARRAY(wxThread *, wxArrayThread); // be left in memory static wxArrayThread gs_allThreads; +// a mutex to protect gs_allThreads +static wxMutex *gs_mutexAllThreads = NULL; + // the id of the main thread static pthread_t gs_tidMain = (pthread_t)-1; @@ -123,11 +128,11 @@ static pthread_key_t gs_keySelf; static size_t gs_nThreadsBeingDeleted = 0; // a mutex to protect gs_nThreadsBeingDeleted -static wxMutex *gs_mutexDeleteThread = (wxMutex *)NULL; +static wxMutex *gs_mutexDeleteThread = NULL; // and a condition variable which will be signaled when all // gs_nThreadsBeingDeleted will have been deleted -static wxCondition *gs_condAllDeleted = (wxCondition *)NULL; +static wxCondition *gs_condAllDeleted = NULL; // this mutex must be acquired before any call to a GUI function // (it's not inside #if wxUSE_GUI because this file is compiled as part @@ -160,20 +165,28 @@ public: ~wxMutexInternal(); wxMutexError Lock(); + wxMutexError Lock(unsigned long ms); wxMutexError TryLock(); wxMutexError Unlock(); bool IsOk() const { return m_isOk; } +private: + // convert the result of pthread_mutex_[timed]lock() call to wx return code + wxMutexError HandleLockResult(int err); + private: pthread_mutex_t m_mutex; bool m_isOk; + wxMutexType m_type; + unsigned long m_owningThread; // wxConditionInternal uses our m_mutex friend class wxConditionInternal; }; -#ifdef HAVE_PTHREAD_MUTEXATTR_T +#if defined(HAVE_PTHREAD_MUTEXATTR_T) && \ + wxUSE_UNIX && !defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE_DECL) // on some systems pthread_mutexattr_settype() is not in the headers (but it is // in the library, otherwise we wouldn't compile this code at all) extern "C" int pthread_mutexattr_settype(pthread_mutexattr_t *, int); @@ -181,6 +194,9 @@ extern "C" int pthread_mutexattr_settype(pthread_mutexattr_t *, int); wxMutexInternal::wxMutexInternal(wxMutexType mutexType) { + m_type = mutexType; + m_owningThread = 0; + int err; switch ( mutexType ) { @@ -241,7 +257,69 @@ wxMutexInternal::~wxMutexInternal() wxMutexError wxMutexInternal::Lock() { - int err = pthread_mutex_lock(&m_mutex); + if ((m_type == wxMUTEX_DEFAULT) && (m_owningThread != 0)) + { + if (m_owningThread == wxThread::GetCurrentId()) + return wxMUTEX_DEAD_LOCK; + } + + return HandleLockResult(pthread_mutex_lock(&m_mutex)); +} + +wxMutexError wxMutexInternal::Lock(unsigned long ms) +{ +#ifdef HAVE_PTHREAD_MUTEX_TIMEDLOCK + static const long MSEC_IN_SEC = 1000; + static const long NSEC_IN_MSEC = 1000000; + static const long NSEC_IN_USEC = 1000; + static const long NSEC_IN_SEC = MSEC_IN_SEC * NSEC_IN_MSEC; + + time_t seconds = ms/MSEC_IN_SEC; + long nanoseconds = (ms % MSEC_IN_SEC) * NSEC_IN_MSEC; + timespec ts = { 0, 0 }; + + // normally we should use clock_gettime(CLOCK_REALTIME) here but this + // function is in librt and we don't link with it currently, so use + // gettimeofday() instead -- if it turns out that this is really too + // imprecise, we should modify configure to check if clock_gettime() is + // available and whether it requires -lrt and use it instead +#if 0 + if ( clock_gettime(CLOCK_REALTIME, &ts) == 0 ) + { + } +#else + struct timeval tv; + if ( wxGetTimeOfDay(&tv) != -1 ) + { + ts.tv_sec = tv.tv_sec; + ts.tv_nsec = tv.tv_usec*NSEC_IN_USEC; + } +#endif + else // fall back on system timer + { + ts.tv_sec = time(NULL); + } + + ts.tv_sec += seconds; + ts.tv_nsec += nanoseconds; + if ( ts.tv_nsec > NSEC_IN_SEC ) + { + ts.tv_sec += 1; + ts.tv_nsec -= NSEC_IN_SEC; + } + + return HandleLockResult(pthread_mutex_timedlock(&m_mutex, &ts)); +#else // !HAVE_PTHREAD_MUTEX_TIMEDLOCK + wxUnusedVar(ms); + + return wxMUTEX_MISC_ERROR; +#endif // HAVE_PTHREAD_MUTEX_TIMEDLOCK/!HAVE_PTHREAD_MUTEX_TIMEDLOCK +} + +wxMutexError wxMutexInternal::HandleLockResult(int err) +{ + // wxPrintf( "err %d\n", err ); + switch ( err ) { case EDEADLK: @@ -251,19 +329,25 @@ wxMutexError wxMutexInternal::Lock() return wxMUTEX_DEAD_LOCK; case EINVAL: - wxLogDebug(_T("pthread_mutex_lock(): mutex not initialized.")); + wxLogDebug(_T("pthread_mutex_[timed]lock(): mutex not initialized")); break; + case ETIMEDOUT: + return wxMUTEX_TIMEOUT; + case 0: + if (m_type == wxMUTEX_DEFAULT) + m_owningThread = wxThread::GetCurrentId(); return wxMUTEX_NO_ERROR; default: - wxLogApiError(_T("pthread_mutex_lock()"), err); + wxLogApiError(_T("pthread_mutex_[timed]lock()"), err); } return wxMUTEX_MISC_ERROR; } + wxMutexError wxMutexInternal::TryLock() { int err = pthread_mutex_trylock(&m_mutex); @@ -279,6 +363,8 @@ wxMutexError wxMutexInternal::TryLock() break; case 0: + if (m_type == wxMUTEX_DEFAULT) + m_owningThread = wxThread::GetCurrentId(); return wxMUTEX_NO_ERROR; default: @@ -290,6 +376,8 @@ wxMutexError wxMutexInternal::TryLock() wxMutexError wxMutexInternal::Unlock() { + m_owningThread = 0; + int err = pthread_mutex_unlock(&m_mutex); switch ( err ) { @@ -483,7 +571,7 @@ wxSemaphoreInternal::wxSemaphoreInternal(int initialcount, int maxcount) { wxFAIL_MSG( _T("wxSemaphore: invalid initial or maximal count") ); - m_isOk = FALSE; + m_isOk = false; } else { @@ -501,14 +589,14 @@ wxSemaError wxSemaphoreInternal::Wait() while ( m_count == 0 ) { wxLogTrace(TRACE_SEMA, - _T("Thread %ld waiting for semaphore to become signalled"), + _T("Thread %p waiting for semaphore to become signalled"), wxThread::GetCurrentId()); if ( m_cond.Wait() != wxCOND_NO_ERROR ) return wxSEMA_MISC_ERROR; wxLogTrace(TRACE_SEMA, - _T("Thread %ld finished waiting for semaphore, count = %lu"), + _T("Thread %p finished waiting for semaphore, count = %lu"), wxThread::GetCurrentId(), (unsigned long)m_count); } @@ -575,7 +663,7 @@ wxSemaError wxSemaphoreInternal::Post() m_count++; wxLogTrace(TRACE_SEMA, - _T("Thread %ld about to signal semaphore, count = %lu"), + _T("Thread %p about to signal semaphore, count = %lu"), wxThread::GetCurrentId(), (unsigned long)m_count); return m_cond.Signal() == wxCOND_NO_ERROR ? wxSEMA_NO_ERROR @@ -590,10 +678,10 @@ wxSemaError wxSemaphoreInternal::Post() extern "C" { -#if HAVE_THREAD_CLEANUP_FUNCTIONS +#ifdef wxHAVE_PTHREAD_CLEANUP // thread exit function void wxPthreadCleanup(void *ptr); -#endif // HAVE_THREAD_CLEANUP_FUNCTIONS +#endif // wxHAVE_PTHREAD_CLEANUP void *wxPthreadStart(void *ptr); @@ -641,8 +729,8 @@ public: _T("EXITED"), }; - wxLogTrace(TRACE_THREADS, _T("Thread %ld: %s => %s."), - (long)GetId(), stateNames[m_state], stateNames[state]); + wxLogTrace(TRACE_THREADS, _T("Thread %p: %s => %s."), + GetId(), stateNames[m_state], stateNames[state]); #endif // __WXDEBUG__ m_state = state; @@ -651,7 +739,7 @@ public: pthread_t GetId() const { return m_threadId; } pthread_t *GetIdPtr() { return &m_threadId; } // "cancelled" flag - void SetCancelFlag() { m_cancelled = TRUE; } + void SetCancelFlag() { m_cancelled = true; } bool WasCancelled() const { return m_cancelled; } // exit code void SetExitCode(wxThread::ExitCode exitcode) { m_exitcode = exitcode; } @@ -666,19 +754,19 @@ public: { wxCriticalSectionLocker lock(m_csJoinFlag); - m_shouldBeJoined = FALSE; - m_isDetached = TRUE; + m_shouldBeJoined = false; + m_isDetached = true; } -#if HAVE_THREAD_CLEANUP_FUNCTIONS +#ifdef wxHAVE_PTHREAD_CLEANUP // this is used by wxPthreadCleanup() only static void Cleanup(wxThread *thread); -#endif // HAVE_THREAD_CLEANUP_FUNCTIONS +#endif // wxHAVE_PTHREAD_CLEANUP private: pthread_t m_threadId; // id of the thread wxThreadState m_state; // see wxThreadState enum - int m_prio; // in wxWindows units: from 0 to 100 + int m_prio; // in wxWidgets units: from 0 to 100 // this flag is set when the thread should terminate bool m_cancelled; @@ -718,7 +806,7 @@ void *wxThreadInternal::PthreadStart(wxThread *thread) { wxThreadInternal *pthread = thread->m_internal; - wxLogTrace(TRACE_THREADS, _T("Thread %ld started."), THR_ID(pthread)); + wxLogTrace(TRACE_THREADS, _T("Thread %p started."), THR_ID(pthread)); // associate the thread pointer with the newly created thread so that // wxThread::This() will work @@ -734,11 +822,11 @@ void *wxThreadInternal::PthreadStart(wxThread *thread) // block! bool dontRunAtAll; -#if HAVE_THREAD_CLEANUP_FUNCTIONS +#ifdef wxHAVE_PTHREAD_CLEANUP // install the cleanup handler which will be called if the thread is // cancelled pthread_cleanup_push(wxPthreadCleanup, thread); -#endif // HAVE_THREAD_CLEANUP_FUNCTIONS +#endif // wxHAVE_PTHREAD_CLEANUP // wait for the semaphore to be posted from Run() pthread->m_semRun.Wait(); @@ -756,14 +844,18 @@ void *wxThreadInternal::PthreadStart(wxThread *thread) { // call the main entry wxLogTrace(TRACE_THREADS, - _T("Thread %ld about to enter its Entry()."), + _T("Thread %p about to enter its Entry()."), THR_ID(pthread)); - pthread->m_exitcode = thread->Entry(); + wxTRY + { + pthread->m_exitcode = thread->Entry(); - wxLogTrace(TRACE_THREADS, - _T("Thread %ld Entry() returned %lu."), - THR_ID(pthread), (unsigned long)pthread->m_exitcode); + wxLogTrace(TRACE_THREADS, + _T("Thread %p Entry() returned %lu."), + THR_ID(pthread), wxPtrToUInt(pthread->m_exitcode)); + } + wxCATCH_ALL( wxTheApp->OnUnhandledException(); ) { wxCriticalSectionLocker lock(thread->m_critsect); @@ -775,13 +867,22 @@ void *wxThreadInternal::PthreadStart(wxThread *thread) } } - // NB: at least under Linux, pthread_cleanup_push/pop are macros and pop - // contains the matching '}' for the '{' in push, so they must be used - // in the same block! -#if HAVE_THREAD_CLEANUP_FUNCTIONS + // NB: pthread_cleanup_push/pop() are macros and pop contains the matching + // '}' for the '{' in push, so they must be used in the same block! +#ifdef wxHAVE_PTHREAD_CLEANUP + #ifdef __DECCXX + // under Tru64 we get a warning from macro expansion + #pragma message save + #pragma message disable(declbutnotref) + #endif + // remove the cleanup handler without executing it pthread_cleanup_pop(FALSE); -#endif // HAVE_THREAD_CLEANUP_FUNCTIONS + + #ifdef __DECCXX + #pragma message restore + #endif +#endif // wxHAVE_PTHREAD_CLEANUP if ( dontRunAtAll ) { @@ -801,7 +902,7 @@ void *wxThreadInternal::PthreadStart(wxThread *thread) } } -#if HAVE_THREAD_CLEANUP_FUNCTIONS +#ifdef wxHAVE_PTHREAD_CLEANUP // this handler is called when the thread is cancelled extern "C" void wxPthreadCleanup(void *ptr) @@ -811,6 +912,7 @@ extern "C" void wxPthreadCleanup(void *ptr) void wxThreadInternal::Cleanup(wxThread *thread) { + if (pthread_getspecific(gs_keySelf) == 0) return; { wxCriticalSectionLocker lock(thread->m_critsect); if ( thread->m_internal->GetState() == STATE_EXITED ) @@ -824,7 +926,7 @@ void wxThreadInternal::Cleanup(wxThread *thread) thread->Exit(EXITCODE_CANCELLED); } -#endif // HAVE_THREAD_CLEANUP_FUNCTIONS +#endif // wxHAVE_PTHREAD_CLEANUP // ---------------------------------------------------------------------------- // wxThreadInternal @@ -833,17 +935,17 @@ void wxThreadInternal::Cleanup(wxThread *thread) wxThreadInternal::wxThreadInternal() { m_state = STATE_NEW; - m_cancelled = FALSE; + m_cancelled = false; m_prio = WXTHREAD_DEFAULT_PRIORITY; m_threadId = 0; m_exitcode = 0; - // set to TRUE only when the thread starts waiting on m_semSuspend - m_isPaused = FALSE; + // set to true only when the thread starts waiting on m_semSuspend + m_isPaused = false; // defaults for joinable threads - m_shouldBeJoined = TRUE; - m_isDetached = FALSE; + m_shouldBeJoined = true; + m_isDetached = false; } wxThreadInternal::~wxThreadInternal() @@ -873,7 +975,7 @@ void wxThreadInternal::Wait() wxMutexGuiLeave(); wxLogTrace(TRACE_THREADS, - _T("Starting to wait for thread %ld to exit."), + _T("Starting to wait for thread %p to exit."), THR_ID(this)); // to avoid memory leaks we should call pthread_join(), but it must only be @@ -896,7 +998,7 @@ void wxThreadInternal::Wait() wxLogError(_("Failed to join a thread, potential memory leak detected - please restart the program")); } - m_shouldBeJoined = FALSE; + m_shouldBeJoined = false; } } @@ -913,7 +1015,7 @@ void wxThreadInternal::Pause() wxT("thread must first be paused with wxThread::Pause().") ); wxLogTrace(TRACE_THREADS, - _T("Thread %ld goes to sleep."), THR_ID(this)); + _T("Thread %p goes to sleep."), THR_ID(this)); // wait until the semaphore is Post()ed from Resume() m_semSuspend.Wait(); @@ -929,18 +1031,18 @@ void wxThreadInternal::Resume() if ( IsReallyPaused() ) { wxLogTrace(TRACE_THREADS, - _T("Waking up thread %ld"), THR_ID(this)); + _T("Waking up thread %p"), THR_ID(this)); // wake up Pause() m_semSuspend.Post(); // reset the flag - SetReallyPaused(FALSE); + SetReallyPaused(false); } else { wxLogTrace(TRACE_THREADS, - _T("Thread %ld is not yet really paused"), THR_ID(this)); + _T("Thread %p is not yet really paused"), THR_ID(this)); } SetState(STATE_RUNNING); @@ -967,14 +1069,16 @@ void wxThread::Yield() #endif } -void wxThread::Sleep(unsigned long milliseconds) -{ - wxUsleep(milliseconds); -} - int wxThread::GetCPUCount() { -#if defined(__LINUX__) && wxUSE_FFILE +#if defined(_SC_NPROCESSORS_ONLN) + // this works for Solaris and Linux 2.6 + int rc = sysconf(_SC_NPROCESSORS_ONLN); + if ( rc != -1 ) + { + return rc; + } +#elif defined(__LINUX__) && wxUSE_FFILE // read from proc (can't use wxTextFile here because it's a special file: // it has 0 size but still can be read from) wxLogNull nolog; @@ -1000,13 +1104,6 @@ int wxThread::GetCPUCount() wxLogDebug(_T("failed to read /proc/cpuinfo")); } } -#elif defined(_SC_NPROCESSORS_ONLN) - // this works for Solaris - int rc = sysconf(_SC_NPROCESSORS_ONLN); - if ( rc != -1 ) - { - return rc; - } #endif // different ways to get number of CPUs // unknown @@ -1054,14 +1151,24 @@ bool wxThread::SetConcurrency(size_t level) wxThread::wxThread(wxThreadKind kind) { // add this thread to the global list of all threads - gs_allThreads.Add(this); + { + wxMutexLocker lock(*gs_mutexAllThreads); + + gs_allThreads.Add(this); + } m_internal = new wxThreadInternal(); m_isDetached = kind == wxTHREAD_DETACHED; } -wxThreadError wxThread::Create(unsigned int WXUNUSED(stackSize)) +#ifdef HAVE_PTHREAD_ATTR_SETSTACKSIZE + #define WXUNUSED_STACKSIZE(identifier) identifier +#else + #define WXUNUSED_STACKSIZE(identifier) WXUNUSED(identifier) +#endif + +wxThreadError wxThread::Create(unsigned int WXUNUSED_STACKSIZE(stackSize)) { if ( m_internal->GetState() != STATE_NEW ) { @@ -1073,6 +1180,11 @@ wxThreadError wxThread::Create(unsigned int WXUNUSED(stackSize)) pthread_attr_t attr; pthread_attr_init(&attr); +#ifdef HAVE_PTHREAD_ATTR_SETSTACKSIZE + if (stackSize) + pthread_attr_setstacksize(&attr, stackSize); +#endif + #ifdef HAVE_THREAD_PRIORITY_FUNCTIONS int policy; if ( pthread_attr_getschedpolicy(&attr, &policy) != 0 ) @@ -1207,42 +1319,21 @@ void wxThread::SetPriority(unsigned int prio) case STATE_PAUSED: #ifdef HAVE_THREAD_PRIORITY_FUNCTIONS #if defined(__LINUX__) -// On Linux, pthread_setschedparam with SCHED_OTHER does not allow -// a priority other than 0. Instead, we use the BSD setpriority -// which alllows us to set a 'nice' value between 20 to -20. Only -// super user can set a value less than zero (more negative yields -// higher priority). setpriority set the static priority of a process, -// but this is OK since Linux is configured as a thread per process. - { - float fPrio; - float pSpan; - int iPrio; - - // Map Wx priorites (WXTHREAD_MIN_PRIORITY - - // WXTHREAD_MAX_PRIORITY) into BSD priorities (20 - -20). - // Do calculation of values instead of hard coding them - // to make maintenance easier. - - pSpan = ((float)(WXTHREAD_MAX_PRIORITY - WXTHREAD_MIN_PRIORITY)) / 2.0; - - // prio starts as ................... // value => (0) >= p <= (n) - - fPrio = ((float)prio) - pSpan; // value => (-n) >= p <= (+n) - - fPrio = 0.0 - fPrio; // value => (+n) <= p >= (-n) - - fPrio = fPrio * (20. / pSpan) + .5; // value => (20) <= p >= (-20) - - iPrio = (int)fPrio; - - // Clamp prio from 20 - -20; - iPrio = (iPrio > 20) ? 20 : iPrio; - iPrio = (iPrio < -20) ? -20 : iPrio; + // On Linux, pthread_setschedparam with SCHED_OTHER does not allow + // a priority other than 0. Instead, we use the BSD setpriority + // which alllows us to set a 'nice' value between 20 to -20. Only + // super user can set a value less than zero (more negative yields + // higher priority). setpriority set the static priority of a + // process, but this is OK since Linux is configured as a thread + // per process. + // + // FIXME this is not true for 2.6!! - if (setpriority(PRIO_PROCESS, 0, iPrio) == -1) - { - wxLogError(_("Failed to set thread priority %d."), prio); - } + // map wx priorites WXTHREAD_MIN_PRIORITY..WXTHREAD_MAX_PRIORITY + // to Unix priorities 20..-20 + if ( setpriority(PRIO_PROCESS, 0, -(2*(int)prio)/5 + 20) == -1 ) + { + wxLogError(_("Failed to set thread priority %d."), prio); } #else // __LINUX__ { @@ -1314,7 +1405,7 @@ wxThreadError wxThread::Resume() switch ( state ) { case STATE_PAUSED: - wxLogTrace(TRACE_THREADS, _T("Thread %ld suspended, resuming."), + wxLogTrace(TRACE_THREADS, _T("Thread %p suspended, resuming."), GetId()); m_internal->Resume(); @@ -1322,7 +1413,7 @@ wxThreadError wxThread::Resume() return wxTHREAD_NO_ERROR; case STATE_EXITED: - wxLogTrace(TRACE_THREADS, _T("Thread %ld exited, won't resume."), + wxLogTrace(TRACE_THREADS, _T("Thread %p exited, won't resume."), GetId()); return wxTHREAD_NO_ERROR; @@ -1423,25 +1514,26 @@ wxThreadError wxThread::Kill() default: #ifdef HAVE_PTHREAD_CANCEL if ( pthread_cancel(m_internal->GetId()) != 0 ) -#endif +#endif // HAVE_PTHREAD_CANCEL { wxLogError(_("Failed to terminate a thread.")); return wxTHREAD_MISC_ERROR; } +#ifdef HAVE_PTHREAD_CANCEL if ( m_isDetached ) { // if we use cleanup function, this will be done from // wxPthreadCleanup() -#if !HAVE_THREAD_CLEANUP_FUNCTIONS +#ifndef wxHAVE_PTHREAD_CLEANUP ScheduleThreadForDeletion(); // don't call OnExit() here, it can only be called in the // threads context and we're in the context of another thread DeleteThread(this); -#endif // HAVE_THREAD_CLEANUP_FUNCTIONS +#endif // wxHAVE_PTHREAD_CLEANUP } else { @@ -1449,6 +1541,7 @@ wxThreadError wxThread::Kill() } return wxTHREAD_NO_ERROR; +#endif // HAVE_PTHREAD_CANCEL } } @@ -1469,7 +1562,11 @@ void wxThread::Exit(ExitCode status) // might deadlock if, for example, it signals a condition in OnExit() (a // common case) while the main thread calls any of functions entering // m_critsect on us (almost all of them do) - OnExit(); + wxTRY + { + OnExit(); + } + wxCATCH_ALL( wxTheApp->OnUnhandledException(); ) // delete C++ thread object if this is a detached thread - user is // responsible for doing this for joinable ones @@ -1482,6 +1579,13 @@ void wxThread::Exit(ExitCode status) // we make it a global object, but this would mean that we can // only call one thread function at a time :-( DeleteThread(this); + pthread_setspecific(gs_keySelf, 0); + } + else + { + m_critsect.Enter(); + m_internal->SetState(STATE_EXITED); + m_critsect.Leave(); } // terminate the thread (pthread_exit() never returns) @@ -1500,7 +1604,7 @@ bool wxThread::TestDestroy() if ( m_internal->GetState() == STATE_PAUSED ) { - m_internal->SetReallyPaused(TRUE); + m_internal->SetReallyPaused(true); // leave the crit section or the other threads will stop too if they // try to call any of (seemingly harmless) IsXXX() functions while we @@ -1527,7 +1631,8 @@ wxThread::~wxThread() if ( m_internal->GetState() != STATE_EXITED && m_internal->GetState() != STATE_NEW ) { - wxLogDebug(_T("The thread %ld is being destroyed although it is still running! The application may crash."), GetId()); + wxLogDebug(_T("The thread %ld is being destroyed although it is still running! The application may crash."), + (long)GetId()); } m_critsect.Leave(); @@ -1536,7 +1641,11 @@ wxThread::~wxThread() delete m_internal; // remove this thread from the global array - gs_allThreads.Remove(this); + { + wxMutexLocker lock(*gs_mutexAllThreads); + + gs_allThreads.Remove(this); + } } // ----------------------------------------------------------------------------- @@ -1558,10 +1667,10 @@ bool wxThread::IsAlive() const { case STATE_RUNNING: case STATE_PAUSED: - return TRUE; + return true; default: - return FALSE; + return false; } } @@ -1595,18 +1704,20 @@ bool wxThreadModule::OnInit() { wxLogSysError(rc, _("Thread module initialization failed: failed to create thread key")); - return FALSE; + return false; } gs_tidMain = pthread_self(); + gs_mutexAllThreads = new wxMutex(); + gs_mutexGui = new wxMutex(); gs_mutexGui->Lock(); gs_mutexDeleteThread = new wxMutex(); - gs_condAllDeleted = new wxCondition( *gs_mutexDeleteThread ); + gs_condAllDeleted = new wxCondition(*gs_mutexDeleteThread); - return TRUE; + return true; } void wxThreadModule::OnExit() @@ -1631,13 +1742,19 @@ void wxThreadModule::OnExit() } } - // terminate any threads left - size_t count = gs_allThreads.GetCount(); - if ( count != 0u ) + size_t count; + { - wxLogDebug(wxT("%lu threads were not terminated by the application."), - (unsigned long)count); - } + wxMutexLocker lock(*gs_mutexAllThreads); + + // terminate any threads left + count = gs_allThreads.GetCount(); + if ( count != 0u ) + { + wxLogDebug(wxT("%lu threads were not terminated by the application."), + (unsigned long)count); + } + } // unlock mutex before deleting the threads as they lock it in their dtor for ( size_t n = 0u; n < count; n++ ) { @@ -1646,6 +1763,8 @@ void wxThreadModule::OnExit() gs_allThreads[0]->Delete(); } + delete gs_mutexAllThreads; + // destroy GUI mutex gs_mutexGui->Unlock(); delete gs_mutexGui; @@ -1669,7 +1788,7 @@ static void ScheduleThreadForDeletion() wxLogTrace(TRACE_THREADS, _T("%lu thread%s waiting to be deleted"), (unsigned long)gs_nThreadsBeingDeleted, - gs_nThreadsBeingDeleted == 1 ? "" : "s"); + gs_nThreadsBeingDeleted == 1 ? _T("") : _T("s")); } static void DeleteThread(wxThread *This) @@ -1678,14 +1797,14 @@ static void DeleteThread(wxThread *This) // or wxThreadModule::OnExit() would deadlock wxMutexLocker locker( *gs_mutexDeleteThread ); - wxLogTrace(TRACE_THREADS, _T("Thread %ld auto deletes."), This->GetId()); + wxLogTrace(TRACE_THREADS, _T("Thread %p auto deletes."), This->GetId()); delete This; wxCHECK_RET( gs_nThreadsBeingDeleted > 0, _T("no threads scheduled for deletion, yet we delete one?") ); - wxLogTrace(TRACE_THREADS, _T("%lu scheduled for deletion threads left."), + wxLogTrace(TRACE_THREADS, _T("%lu threads remain scheduled for deletion."), (unsigned long)gs_nThreadsBeingDeleted - 1); if ( !--gs_nThreadsBeingDeleted ) @@ -1695,12 +1814,12 @@ static void DeleteThread(wxThread *This) } } -void wxMutexGuiEnter() +void wxMutexGuiEnterImpl() { gs_mutexGui->Lock(); } -void wxMutexGuiLeave() +void wxMutexGuiLeaveImpl() { gs_mutexGui->Unlock(); } @@ -1712,4 +1831,3 @@ void wxMutexGuiLeave() #include "wx/thrimpl.cpp" #endif // wxUSE_THREADS -