adapting ownership semantics to cocoa convention

[wxWidgets.git] / src / unix / threadpsx.cpp

diff --git a/src/unix/threadpsx.cpp b/src/unix/threadpsx.cpp
index 142268d1b069b98cb26d1c989c9ec5e94ef99006..22fefee76d267440e3ab5aaa46abe801a26219f3 100644 (file)
--- a/src/unix/threadpsx.cpp
+++ b/src/unix/threadpsx.cpp
@@ -45,6 +45,7 @@
 #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
@@ -56,16 +57,11 @@
 // 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
@@ -138,10 +134,12 @@ static wxMutex *gs_mutexDeleteThread = NULL;
 // 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
@@ -594,14 +592,14 @@ wxSemaError wxSemaphoreInternal::Wait()
     {
         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--;
@@ -668,7 +666,7 @@ wxSemaError wxSemaphoreInternal::Post()
 
     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;
@@ -734,7 +732,7 @@ public:
         };
 
         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;
@@ -976,7 +974,17 @@ void wxThreadInternal::Wait()
     // 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."),
@@ -1006,9 +1014,11 @@ void wxThreadInternal::Wait()
         }
     }
 
+#ifndef __WXOSX__
     // reacquire GUI mutex
     if ( wxThread::IsMain() )
         wxMutexGuiEnter();
+#endif
 }
 
 void wxThreadInternal::Pause()
@@ -1393,7 +1403,7 @@ wxThreadError wxThread::Resume()
     {
         case STATE_PAUSED:
             wxLogTrace(TRACE_THREADS, wxT("Thread %p suspended, resuming."),
-                       GetId());
+                       THR_ID(this));
 
             m_internal->Resume();
 
@@ -1401,7 +1411,7 @@ wxThreadError wxThread::Resume()
 
         case STATE_EXITED:
             wxLogTrace(TRACE_THREADS, wxT("Thread %p exited, won't resume."),
-                       GetId());
+                       THR_ID(this));
             return wxTHREAD_NO_ERROR;
 
         default:
@@ -1415,7 +1425,7 @@ 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") );
@@ -1428,7 +1438,7 @@ 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") );
@@ -1443,6 +1453,8 @@ wxThreadError wxThread::Delete(ExitCode *rc)
 
     m_critsect.Leave();
 
+    OnDelete();
+
     switch ( state )
     {
         case STATE_NEW:
@@ -1478,6 +1490,11 @@ 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
+            // Delete() was called on a thread which didn't start to run yet.
+
     return wxTHREAD_NO_ERROR;
 }
 
@@ -1486,6 +1503,8 @@ 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:
@@ -1617,8 +1636,8 @@ wxThread::~wxThread()
     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();
@@ -1670,6 +1689,11 @@ bool wxThread::IsPaused() const
 // wxThreadModule
 //--------------------------------------------------------------------
 
+#ifdef __WXOSX__
+void wxOSXThreadModuleOnInit();
+void wxOSXThreadModuleOnExit();
+#endif
+
 class wxThreadModule : public wxModule
 {
 public:
@@ -1696,8 +1720,12 @@ bool wxThreadModule::OnInit()
 
     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);
@@ -1750,9 +1778,13 @@ void wxThreadModule::OnExit()
 
     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);
@@ -1778,7 +1810,7 @@ static void ScheduleThreadForDeletion()
 
 static void DeleteThread(wxThread *This)
 {
-    wxLogTrace(TRACE_THREADS, wxT("Thread %p auto deletes."), This->GetId());
+    wxLogTrace(TRACE_THREADS, wxT("Thread %p auto deletes."), THR_ID(This));
 
     delete This;
 
@@ -1800,6 +1832,8 @@ static void DeleteThread(wxThread *This)
     }
 }
 
+#ifndef __WXOSX__
+
 void wxMutexGuiEnterImpl()
 {
     gs_mutexGui->Lock();
@@ -1810,6 +1844,8 @@ void wxMutexGuiLeaveImpl()
     gs_mutexGui->Unlock();
 }
 
+#endif
+
 // ----------------------------------------------------------------------------
 // include common implementation code
 // ----------------------------------------------------------------------------