X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/827833e2e270012069312431aadaf58096286329..6ba718d7aee2f519d9146b90424ccec9e2243479:/src/unix/threadpsx.cpp diff --git a/src/unix/threadpsx.cpp b/src/unix/threadpsx.cpp index 7e784e285f..38897f3b28 100644 --- a/src/unix/threadpsx.cpp +++ b/src/unix/threadpsx.cpp @@ -4,7 +4,6 @@ // Author: Original from Wolfram Gloger/Guilhem Lavaux // Modified by: K. S. Sreeram (2002): POSIXified wxCondition, added wxSemaphore // Created: 04/22/98 -// RCS-ID: $Id$ // Copyright: (c) Wolfram Gloger (1996, 1997) // Guilhem Lavaux (1998) // Vadim Zeitlin (1999-2002) @@ -54,10 +53,17 @@ #include #endif +#ifdef HAVE_ABI_FORCEDUNWIND + #include +#endif + +#ifdef HAVE_SETPRIORITY + #include // for setpriority() +#endif + // we use wxFFile under Linux in GetCPUCount() #ifdef __LINUX__ #include "wx/ffile.h" - #include // for setpriority() #endif #define THR_ID_CAST(id) (reinterpret_cast(id)) @@ -475,7 +481,7 @@ wxCondError wxConditionInternal::Wait() wxCondError wxConditionInternal::WaitTimeout(unsigned long milliseconds) { - wxLongLong curtime = wxGetLocalTimeMillis(); + wxLongLong curtime = wxGetUTCTimeMillis(); curtime += milliseconds; wxLongLong temp = curtime / 1000; int sec = temp.GetLo(); @@ -703,6 +709,8 @@ public: static void *PthreadStart(wxThread *thread); // thread actions + // create the thread + wxThreadError Create(wxThread *thread, unsigned int stackSize); // start the thread wxThreadError Run(); // unblock the thread allowing it to run @@ -740,6 +748,8 @@ public: // id pthread_t GetId() const { return m_threadId; } pthread_t *GetIdPtr() { return &m_threadId; } + // "created" flag + bool WasCreated() const { return m_created; } // "cancelled" flag void SetCancelFlag() { m_cancelled = true; } bool WasCancelled() const { return m_cancelled; } @@ -770,6 +780,9 @@ private: wxThreadState m_state; // see wxThreadState enum int m_prio; // in wxWidgets units: from 0 to 100 + // this flag is set when the thread was successfully created + bool m_created; + // this flag is set when the thread should terminate bool m_cancelled; @@ -815,7 +828,7 @@ void *wxThreadInternal::PthreadStart(wxThread *thread) int rc = pthread_setspecific(gs_keySelf, thread); if ( rc != 0 ) { - wxLogSysError(rc, _("Cannot start thread: error writing TLS")); + wxLogSysError(rc, _("Cannot start thread: error writing TLS.")); return (void *)-1; } @@ -857,6 +870,18 @@ void *wxThreadInternal::PthreadStart(wxThread *thread) wxT("Thread %p Entry() returned %lu."), THR_ID(pthread), wxPtrToUInt(pthread->m_exitcode)); } +#ifdef HAVE_ABI_FORCEDUNWIND + // When using common C++ ABI under Linux we must always rethrow this + // special exception used to unwind the stack when the thread was + // cancelled, otherwise the thread library would simply terminate the + // program, see http://udrepper.livejournal.com/21541.html + catch ( abi::__forced_unwind& ) + { + wxCriticalSectionLocker lock(thread->m_critsect); + pthread->SetState(STATE_EXITED); + throw; + } +#endif // HAVE_ABI_FORCEDUNWIND wxCATCH_ALL( wxTheApp->OnUnhandledException(); ) { @@ -937,8 +962,9 @@ void wxThreadInternal::Cleanup(wxThread *thread) wxThreadInternal::wxThreadInternal() { m_state = STATE_NEW; + m_created = false; m_cancelled = false; - m_prio = WXTHREAD_DEFAULT_PRIORITY; + m_prio = wxPRIORITY_DEFAULT; m_threadId = 0; m_exitcode = 0; @@ -954,6 +980,132 @@ wxThreadInternal::~wxThreadInternal() { } +#ifdef HAVE_PTHREAD_ATTR_SETSTACKSIZE + #define WXUNUSED_STACKSIZE(identifier) identifier +#else + #define WXUNUSED_STACKSIZE(identifier) WXUNUSED(identifier) +#endif + +wxThreadError wxThreadInternal::Create(wxThread *thread, + unsigned int WXUNUSED_STACKSIZE(stackSize)) +{ + if ( GetState() != STATE_NEW ) + { + // don't recreate thread + return wxTHREAD_RUNNING; + } + + // set up the thread attribute: right now, we only set thread priority + 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 ) + { + wxLogError(_("Cannot retrieve thread scheduling policy.")); + } + +#ifdef __VMS__ + /* the pthread.h contains too many spaces. This is a work-around */ +# undef sched_get_priority_max +#undef sched_get_priority_min +#define sched_get_priority_max(_pol_) \ + (_pol_ == SCHED_OTHER ? PRI_FG_MAX_NP : PRI_FIFO_MAX) +#define sched_get_priority_min(_pol_) \ + (_pol_ == SCHED_OTHER ? PRI_FG_MIN_NP : PRI_FIFO_MIN) +#endif + + int max_prio = sched_get_priority_max(policy), + min_prio = sched_get_priority_min(policy), + prio = GetPriority(); + + if ( min_prio == -1 || max_prio == -1 ) + { + wxLogError(_("Cannot get priority range for scheduling policy %d."), + policy); + } + else if ( max_prio == min_prio ) + { + if ( prio != wxPRIORITY_DEFAULT ) + { + // notify the programmer that this doesn't work here + wxLogWarning(_("Thread priority setting is ignored.")); + } + //else: we have default priority, so don't complain + + // anyhow, don't do anything because priority is just ignored + } + else + { + struct sched_param sp; + if ( pthread_attr_getschedparam(&attr, &sp) != 0 ) + { + wxFAIL_MSG(wxT("pthread_attr_getschedparam() failed")); + } + + sp.sched_priority = min_prio + (prio*(max_prio - min_prio))/100; + + if ( pthread_attr_setschedparam(&attr, &sp) != 0 ) + { + wxFAIL_MSG(wxT("pthread_attr_setschedparam(priority) failed")); + } + } +#endif // HAVE_THREAD_PRIORITY_FUNCTIONS + +#ifdef HAVE_PTHREAD_ATTR_SETSCOPE + // this will make the threads created by this process really concurrent + if ( pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM) != 0 ) + { + wxFAIL_MSG(wxT("pthread_attr_setscope(PTHREAD_SCOPE_SYSTEM) failed")); + } +#endif // HAVE_PTHREAD_ATTR_SETSCOPE + + // VZ: assume that this one is always available (it's rather fundamental), + // if this function is ever missing we should try to use + // pthread_detach() instead (after thread creation) + if ( thread->IsDetached() ) + { + if ( pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) != 0 ) + { + wxFAIL_MSG(wxT("pthread_attr_setdetachstate(DETACHED) failed")); + } + + // never try to join detached threads + Detach(); + } + //else: threads are created joinable by default, it's ok + + // create the new OS thread object + int rc = pthread_create + ( + GetIdPtr(), + &attr, + wxPthreadStart, + (void *)thread + ); + + if ( pthread_attr_destroy(&attr) != 0 ) + { + wxFAIL_MSG(wxT("pthread_attr_destroy() failed")); + } + + if ( rc != 0 ) + { + SetState(STATE_EXITED); + + return wxTHREAD_NO_RESOURCE; + } + + m_created = true; + return wxTHREAD_NO_ERROR; +} + wxThreadError wxThreadInternal::Run() { wxCHECK_MSG( GetState() == STATE_NEW, wxTHREAD_RUNNING, @@ -1127,18 +1279,23 @@ wxThreadIdType wxThread::GetCurrentId() bool wxThread::SetConcurrency(size_t level) { -#ifdef HAVE_THR_SETCONCURRENCY +#ifdef HAVE_PTHREAD_SET_CONCURRENCY + int rc = pthread_setconcurrency( level ); +#elif defined(HAVE_THR_SETCONCURRENCY) int rc = thr_setconcurrency(level); +#else // !HAVE_THR_SETCONCURRENCY + // ok only for the default value + int rc = level == 0 ? 0 : -1; +#endif // HAVE_THR_SETCONCURRENCY/!HAVE_THR_SETCONCURRENCY + if ( rc != 0 ) { - wxLogSysError(rc, wxT("thr_setconcurrency() failed")); + wxLogSysError(rc, _("Failed to set thread concurrency level to %lu"), + static_cast(level)); + return false; } - return rc == 0; -#else // !HAVE_THR_SETCONCURRENCY - // ok only for the default value - return level == 0; -#endif // HAVE_THR_SETCONCURRENCY/!HAVE_THR_SETCONCURRENCY + return true; } // ----------------------------------------------------------------------------- @@ -1159,136 +1316,25 @@ wxThread::wxThread(wxThreadKind kind) m_isDetached = kind == wxTHREAD_DETACHED; } -#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)) +wxThreadError wxThread::Create(unsigned int stackSize) { - if ( m_internal->GetState() != STATE_NEW ) - { - // don't recreate thread - return wxTHREAD_RUNNING; - } - - // set up the thread attribute: right now, we only set thread priority - 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 ) - { - wxLogError(_("Cannot retrieve thread scheduling policy.")); - } - -#ifdef __VMS__ - /* the pthread.h contains too many spaces. This is a work-around */ -# undef sched_get_priority_max -#undef sched_get_priority_min -#define sched_get_priority_max(_pol_) \ - (_pol_ == SCHED_OTHER ? PRI_FG_MAX_NP : PRI_FIFO_MAX) -#define sched_get_priority_min(_pol_) \ - (_pol_ == SCHED_OTHER ? PRI_FG_MIN_NP : PRI_FIFO_MIN) -#endif - - int max_prio = sched_get_priority_max(policy), - min_prio = sched_get_priority_min(policy), - prio = m_internal->GetPriority(); - - if ( min_prio == -1 || max_prio == -1 ) - { - wxLogError(_("Cannot get priority range for scheduling policy %d."), - policy); - } - else if ( max_prio == min_prio ) - { - if ( prio != WXTHREAD_DEFAULT_PRIORITY ) - { - // notify the programmer that this doesn't work here - wxLogWarning(_("Thread priority setting is ignored.")); - } - //else: we have default priority, so don't complain - - // anyhow, don't do anything because priority is just ignored - } - else - { - struct sched_param sp; - if ( pthread_attr_getschedparam(&attr, &sp) != 0 ) - { - wxFAIL_MSG(wxT("pthread_attr_getschedparam() failed")); - } - - sp.sched_priority = min_prio + (prio*(max_prio - min_prio))/100; - - if ( pthread_attr_setschedparam(&attr, &sp) != 0 ) - { - wxFAIL_MSG(wxT("pthread_attr_setschedparam(priority) failed")); - } - } -#endif // HAVE_THREAD_PRIORITY_FUNCTIONS - -#ifdef HAVE_PTHREAD_ATTR_SETSCOPE - // this will make the threads created by this process really concurrent - if ( pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM) != 0 ) - { - wxFAIL_MSG(wxT("pthread_attr_setscope(PTHREAD_SCOPE_SYSTEM) failed")); - } -#endif // HAVE_PTHREAD_ATTR_SETSCOPE - - // VZ: assume that this one is always available (it's rather fundamental), - // if this function is ever missing we should try to use - // pthread_detach() instead (after thread creation) - if ( m_isDetached ) - { - if ( pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) != 0 ) - { - wxFAIL_MSG(wxT("pthread_attr_setdetachstate(DETACHED) failed")); - } - - // never try to join detached threads - m_internal->Detach(); - } - //else: threads are created joinable by default, it's ok - - // create the new OS thread object - int rc = pthread_create - ( - m_internal->GetIdPtr(), - &attr, - wxPthreadStart, - (void *)this - ); - - if ( pthread_attr_destroy(&attr) != 0 ) - { - wxFAIL_MSG(wxT("pthread_attr_destroy() failed")); - } - - if ( rc != 0 ) - { - m_internal->SetState(STATE_EXITED); - - return wxTHREAD_NO_RESOURCE; - } + wxCriticalSectionLocker lock(m_critsect); - return wxTHREAD_NO_ERROR; + return m_internal->Create(this, stackSize); } wxThreadError wxThread::Run() { wxCriticalSectionLocker lock(m_critsect); - wxCHECK_MSG( m_internal->GetId(), wxTHREAD_MISC_ERROR, - wxT("must call wxThread::Create() first") ); + // Create the thread if it wasn't created yet with an explicit + // Create() call: + if ( !m_internal->WasCreated() ) + { + wxThreadError rv = m_internal->Create(this, 0); + if ( rv != wxTHREAD_NO_ERROR ) + return rv; + } return m_internal->Run(); } @@ -1299,8 +1345,7 @@ wxThreadError wxThread::Run() void wxThread::SetPriority(unsigned int prio) { - wxCHECK_RET( ((int)WXTHREAD_MIN_PRIORITY <= (int)prio) && - ((int)prio <= (int)WXTHREAD_MAX_PRIORITY), + wxCHECK_RET( wxPRIORITY_MIN <= prio && prio <= wxPRIORITY_MAX, wxT("invalid thread priority") ); wxCriticalSectionLocker lock(m_critsect); @@ -1326,8 +1371,7 @@ void wxThread::SetPriority(unsigned int prio) // // FIXME this is not true for 2.6!! - // map wx priorites WXTHREAD_MIN_PRIORITY..WXTHREAD_MAX_PRIORITY - // to Unix priorities 20..-20 + // map wx priorites 0..100 to Unix priorities 20..-20 if ( setpriority(PRIO_PROCESS, 0, -(2*(int)prio)/5 + 20) == -1 ) { wxLogError(_("Failed to set thread priority %d."), prio); @@ -1425,7 +1469,7 @@ wxThreadError wxThread::Resume() // exiting thread // ----------------------------------------------------------------------------- -wxThread::ExitCode wxThread::Wait() +wxThread::ExitCode wxThread::Wait(wxThreadWait WXUNUSED(waitMode)) { wxCHECK_MSG( This() != this, (ExitCode)-1, wxT("a thread can't wait for itself") ); @@ -1438,7 +1482,7 @@ wxThread::ExitCode wxThread::Wait() return m_internal->GetExitCode(); } -wxThreadError wxThread::Delete(ExitCode *rc) +wxThreadError wxThread::Delete(ExitCode *rc, wxThreadWait WXUNUSED(waitMode)) { wxCHECK_MSG( This() != this, wxTHREAD_MISC_ERROR, wxT("a thread can't delete itself") ); @@ -1453,6 +1497,8 @@ wxThreadError wxThread::Delete(ExitCode *rc) m_critsect.Leave(); + OnDelete(); + switch ( state ) { case STATE_NEW: @@ -1487,10 +1533,10 @@ wxThreadError wxThread::Delete(ExitCode *rc) } //else: can't wait for detached threads } - + if (state == STATE_NEW) return wxTHREAD_MISC_ERROR; - // for coherency with the MSW implementation, signal the user that + // for coherency with the MSW implementation, signal the user that // Delete() was called on a thread which didn't start to run yet. return wxTHREAD_NO_ERROR; @@ -1501,6 +1547,8 @@ wxThreadError wxThread::Kill() wxCHECK_MSG( This() != this, wxTHREAD_MISC_ERROR, wxT("a thread can't kill itself") ); + OnKill(); + switch ( m_internal->GetState() ) { case STATE_NEW: @@ -1828,7 +1876,7 @@ static void DeleteThread(wxThread *This) } } -#ifndef __WXOSX__ +#ifndef __DARWIN__ void wxMutexGuiEnterImpl() {