#include <pthread.h>
#include <errno.h>
#include <time.h>
+#include <sys/time.h> // needed for at least __QNX__
#ifdef HAVE_SCHED_H
#include <sched.h>
#endif
#include <thread.h>
#endif
+#ifdef HAVE_ABI_FORCEDUNWIND
+ #include <cxxabi.h>
+#endif
+
// we use wxFFile under Linux in GetCPUCount()
#ifdef __LINUX__
#include "wx/ffile.h"
- // For setpriority.
- #include <sys/time.h>
- #include <sys/resource.h>
+ #include <sys/resource.h> // for setpriority()
#endif
-#ifdef __VMS
- #define THR_ID(thr) ((long long)(thr)->GetId())
-#else
- #define THR_ID(thr) ((long)(thr)->GetId())
-#endif
+#define THR_ID_CAST(id) (reinterpret_cast<void*>(id))
+#define THR_ID(thr) THR_ID_CAST((thr)->GetId())
// ----------------------------------------------------------------------------
// constants
// gs_nThreadsBeingDeleted will have been deleted
static wxCondition *gs_condAllDeleted = NULL;
+#ifndef __WXOSX__
// 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
// of wxBase)
static wxMutex *gs_mutexGui = NULL;
+#endif
// when we wait for a thread to exit, we're blocking on a condition which the
// thread signals in its SignalExit() method -- but this condition can't be a
wxCondError wxConditionInternal::WaitTimeout(unsigned long milliseconds)
{
- wxLongLong curtime = wxGetLocalTimeMillis();
+ wxLongLong curtime = wxGetUTCTimeMillis();
curtime += milliseconds;
wxLongLong temp = curtime / 1000;
int sec = temp.GetLo();
{
wxLogTrace(TRACE_SEMA,
wxT("Thread %p waiting for semaphore to become signalled"),
- wxThread::GetCurrentId());
+ THR_ID_CAST(wxThread::GetCurrentId()));
if ( m_cond.Wait() != wxCOND_NO_ERROR )
return wxSEMA_MISC_ERROR;
wxLogTrace(TRACE_SEMA,
wxT("Thread %p finished waiting for semaphore, count = %lu"),
- wxThread::GetCurrentId(), (unsigned long)m_count);
+ THR_ID_CAST(wxThread::GetCurrentId()), (unsigned long)m_count);
}
m_count--;
wxLogTrace(TRACE_SEMA,
wxT("Thread %p about to signal semaphore, count = %lu"),
- wxThread::GetCurrentId(), (unsigned long)m_count);
+ THR_ID_CAST(wxThread::GetCurrentId()), (unsigned long)m_count);
return m_cond.Signal() == wxCOND_NO_ERROR ? wxSEMA_NO_ERROR
: wxSEMA_MISC_ERROR;
void SetState(wxThreadState state)
{
#if wxUSE_LOG_TRACE
- static const wxChar *stateNames[] =
+ static const wxChar *const stateNames[] =
{
wxT("NEW"),
wxT("RUNNING"),
};
wxLogTrace(TRACE_THREADS, wxT("Thread %p: %s => %s."),
- GetId(), stateNames[m_state], stateNames[state]);
+ THR_ID(this), stateNames[m_state], stateNames[state]);
#endif // wxUSE_LOG_TRACE
m_state = state;
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;
}
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(); )
{
// if the thread we're waiting for is waiting for the GUI mutex, we will
// deadlock so make sure we release it temporarily
if ( wxThread::IsMain() )
+ {
+#ifdef __WXOSX__
+ // give the thread we're waiting for chance to do the GUI call
+ // it might be in, we don't do this conditionally as the to be waited on
+ // thread might have to acquire the mutex later but before terminating
+ if ( wxGuiOwnedByMainThread() )
+ wxMutexGuiLeave();
+#else
wxMutexGuiLeave();
+#endif
+ }
wxLogTrace(TRACE_THREADS,
wxT("Starting to wait for thread %p to exit."),
}
}
+#ifndef __WXOSX__
// reacquire GUI mutex
if ( wxThread::IsMain() )
wxMutexGuiEnter();
+#endif
}
void wxThreadInternal::Pause()
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<unsigned long>(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;
}
// -----------------------------------------------------------------------------
{
case STATE_PAUSED:
wxLogTrace(TRACE_THREADS, wxT("Thread %p suspended, resuming."),
- GetId());
+ THR_ID(this));
m_internal->Resume();
case STATE_EXITED:
wxLogTrace(TRACE_THREADS, wxT("Thread %p exited, won't resume."),
- GetId());
+ THR_ID(this));
return wxTHREAD_NO_ERROR;
default:
// 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") );
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") );
m_critsect.Leave();
+ OnDelete();
+
switch ( state )
{
case STATE_NEW:
//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
+ // Delete() was called on a thread which didn't start to run yet.
+
return wxTHREAD_NO_ERROR;
}
wxCHECK_MSG( This() != this, wxTHREAD_MISC_ERROR,
wxT("a thread can't kill itself") );
+ OnKill();
+
switch ( m_internal->GetState() )
{
case STATE_NEW:
if ( m_internal->GetState() != STATE_EXITED &&
m_internal->GetState() != STATE_NEW )
{
- wxLogDebug(wxT("The thread %ld is being destroyed although it is still running! The application may crash."),
- (long)GetId());
+ wxLogDebug(wxT("The thread %p is being destroyed although it is still running! The application may crash."),
+ THR_ID(this));
}
m_critsect.Leave();
// wxThreadModule
//--------------------------------------------------------------------
+#ifdef __WXOSX__
+void wxOSXThreadModuleOnInit();
+void wxOSXThreadModuleOnExit();
+#endif
+
class wxThreadModule : public wxModule
{
public:
gs_mutexAllThreads = new wxMutex();
+#ifdef __WXOSX__
+ wxOSXThreadModuleOnInit();
+#else
gs_mutexGui = new wxMutex();
gs_mutexGui->Lock();
+#endif
gs_mutexDeleteThread = new wxMutex();
gs_condAllDeleted = new wxCondition(*gs_mutexDeleteThread);
delete gs_mutexAllThreads;
+#ifdef __WXOSX__
+ wxOSXThreadModuleOnExit();
+#else
// destroy GUI mutex
gs_mutexGui->Unlock();
delete gs_mutexGui;
+#endif
// and free TLD slot
(void)pthread_key_delete(gs_keySelf);
static void DeleteThread(wxThread *This)
{
- // gs_mutexDeleteThread should be unlocked before signalling the condition
- // or wxThreadModule::OnExit() would deadlock
- wxMutexLocker locker( *gs_mutexDeleteThread );
-
- wxLogTrace(TRACE_THREADS, wxT("Thread %p auto deletes."), This->GetId());
+ wxLogTrace(TRACE_THREADS, wxT("Thread %p auto deletes."), THR_ID(This));
delete This;
+ // only lock gs_mutexDeleteThread after deleting the thread to avoid
+ // calling out into user code with it locked as this may result in
+ // deadlocks if the thread dtor deletes another thread (see #11501)
+ wxMutexLocker locker( *gs_mutexDeleteThread );
+
wxCHECK_RET( gs_nThreadsBeingDeleted > 0,
wxT("no threads scheduled for deletion, yet we delete one?") );
}
}
+#ifndef __DARWIN__
+
void wxMutexGuiEnterImpl()
{
gs_mutexGui->Lock();
gs_mutexGui->Unlock();
}
+#endif
+
// ----------------------------------------------------------------------------
// include common implementation code
// ----------------------------------------------------------------------------
projects / wxWidgets.git / blobdiff