X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/741d91c5e489871359ed702714714bbb9ceb92b4..0bbe61b8c18a1795189f0cf73cc61c14a0fb846d:/src/unix/threadpsx.cpp diff --git a/src/unix/threadpsx.cpp b/src/unix/threadpsx.cpp index 2eb63474f9..8e7d9bba9f 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 @@ -27,13 +27,18 @@ #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/stopwatch.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 @@ -109,6 +114,9 @@ WX_DEFINE_ARRAY_PTR(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; @@ -157,11 +165,16 @@ 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; @@ -239,7 +252,61 @@ wxMutexInternal::~wxMutexInternal() wxMutexError wxMutexInternal::Lock() { - int err = pthread_mutex_lock(&m_mutex); + 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) +{ switch ( err ) { case EDEADLK: @@ -249,19 +316,23 @@ 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: 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); @@ -481,7 +552,7 @@ wxSemaphoreInternal::wxSemaphoreInternal(int initialcount, int maxcount) { wxFAIL_MSG( _T("wxSemaphore: invalid initial or maximal count") ); - m_isOk = FALSE; + m_isOk = false; } else { @@ -649,7 +720,7 @@ 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; } @@ -664,8 +735,8 @@ public: { wxCriticalSectionLocker lock(m_csJoinFlag); - m_shouldBeJoined = FALSE; - m_isDetached = TRUE; + m_shouldBeJoined = false; + m_isDetached = true; } #ifdef wxHAVE_PTHREAD_CLEANUP @@ -757,11 +828,15 @@ void *wxThreadInternal::PthreadStart(wxThread *thread) _T("Thread %ld 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), wxPtrToUInt(pthread->m_exitcode)); + wxLogTrace(TRACE_THREADS, + _T("Thread %ld Entry() returned %lu."), + THR_ID(pthread), wxPtrToUInt(pthread->m_exitcode)); + } + wxCATCH_ALL( wxTheApp->OnUnhandledException(); ) { wxCriticalSectionLocker lock(thread->m_critsect); @@ -818,6 +893,7 @@ 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 ) @@ -840,17 +916,17 @@ 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() @@ -903,7 +979,7 @@ void wxThreadInternal::Wait() wxLogError(_("Failed to join a thread, potential memory leak detected - please restart the program")); } - m_shouldBeJoined = FALSE; + m_shouldBeJoined = false; } } @@ -942,7 +1018,7 @@ void wxThreadInternal::Resume() m_semSuspend.Post(); // reset the flag - SetReallyPaused(FALSE); + SetReallyPaused(false); } else { @@ -981,7 +1057,14 @@ void wxThread::Sleep(unsigned long 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; @@ -1007,13 +1090,6 @@ 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 @@ -1061,7 +1137,11 @@ 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(); @@ -1237,7 +1317,7 @@ void wxThread::SetPriority(unsigned int prio) // map wx priorites WXTHREAD_MIN_PRIORITY..WXTHREAD_MAX_PRIORITY // to Unix priorities 20..-20 - if ( setpriority(PRIO_PROCESS, 0, -(2*prio)/5 + 20) == -1 ) + if ( setpriority(PRIO_PROCESS, 0, -(2*(int)prio)/5 + 20) == -1 ) { wxLogError(_("Failed to set thread priority %d."), prio); } @@ -1468,7 +1548,11 @@ 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 @@ -1481,6 +1565,7 @@ 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 { @@ -1505,7 +1590,7 @@ 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 @@ -1542,7 +1627,11 @@ wxThread::~wxThread() delete m_internal; // remove this thread from the global array - gs_allThreads.Remove(this); + { + wxMutexLocker lock(*gs_mutexAllThreads); + + gs_allThreads.Remove(this); + } } // ----------------------------------------------------------------------------- @@ -1564,10 +1653,10 @@ bool wxThread::IsAlive() const { case STATE_RUNNING: case STATE_PAUSED: - return TRUE; + return true; default: - return FALSE; + return false; } } @@ -1601,18 +1690,20 @@ 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() @@ -1637,13 +1728,19 @@ 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++ ) { @@ -1652,6 +1749,8 @@ void wxThreadModule::OnExit() gs_allThreads[0]->Delete(); } + delete gs_mutexAllThreads; + // destroy GUI mutex gs_mutexGui->Unlock(); delete gs_mutexGui; @@ -1675,7 +1774,7 @@ 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) @@ -1701,12 +1800,12 @@ static void DeleteThread(wxThread *This) } } -void wxMutexGuiEnter() +void wxMutexGuiEnterImpl() { gs_mutexGui->Lock(); } -void wxMutexGuiLeave() +void wxMutexGuiLeaveImpl() { gs_mutexGui->Unlock(); } @@ -1718,4 +1817,3 @@ void wxMutexGuiLeave() #include "wx/thrimpl.cpp" #endif // wxUSE_THREADS -