X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b18cfdd9bdcfd498042b41bb5302e5fdb220a4f8..a4a162522b875bc7cb23f1d165703f71bd7010f7:/src/unix/threadpsx.cpp

diff --git a/src/unix/threadpsx.cpp b/src/unix/threadpsx.cpp
index f0a19482a0..e10fe97e82 100644
--- a/src/unix/threadpsx.cpp
+++ b/src/unix/threadpsx.cpp
@@ -164,8 +164,26 @@ wxMutex::wxMutex()
 {
     m_internal = new wxMutexInternal;
 
-    pthread_mutex_init(&(m_internal->m_mutex),
-                       (pthread_mutexattr_t*) NULL );
+    // support recursive locks like Win32, i.e. a thread can lock a mutex which
+    // it had itself already locked
+    //
+    // but initialization of recursive mutexes is non portable <sigh>, so try
+    // several methods
+#ifdef HAVE_PTHREAD_MUTEXATTR_T
+    pthread_mutexattr_t attr;
+    pthread_mutexattr_init(&attr);
+    pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+
+    pthread_mutex_init(&(m_internal->m_mutex), &attr);
+#elif defined(HAVE_PTHREAD_RECURSIVE_MUTEX_INITIALIZER)
+    // we can use this only as initializer so we have to assign it first to a
+    // temp var - assigning directly to m_mutex wouldn't even compile
+    pthread_mutex_t mutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
+    m_internal->m_mutex = mutex;
+#else // no recursive mutexes
+    pthread_mutex_init(&(m_internal->m_mutex), NULL);
+#endif // HAVE_PTHREAD_MUTEXATTR_T/...
+
     m_locked = 0;
 }
 
@@ -472,6 +490,19 @@ void wxCondition::Broadcast()
 // wxThread (Posix implementation)
 //--------------------------------------------------------------------
 
+// the thread callback functions must have the C linkage
+extern "C"
+{
+
+#if HAVE_THREAD_CLEANUP_FUNCTIONS
+    // thread exit function
+    void wxPthreadCleanup(void *ptr);
+#endif // HAVE_THREAD_CLEANUP_FUNCTIONS
+
+void *wxPthreadStart(void *ptr);
+
+} // extern "C"
+
 class wxThreadInternal
 {
 public:
@@ -479,12 +510,7 @@ public:
     ~wxThreadInternal();
 
     // thread entry function
-    static void *PthreadStart(void *ptr);
-
-#if HAVE_THREAD_CLEANUP_FUNCTIONS
-    // thread exit function
-    static void PthreadCleanup(void *ptr);
-#endif
+    static void *PthreadStart(wxThread *thread);
 
     // thread actions
         // start the thread
@@ -531,6 +557,11 @@ public:
         // sometimes - tell the thread that it should do it
     void Notify() { m_shouldBroadcast = TRUE; }
 
+#if HAVE_THREAD_CLEANUP_FUNCTIONS
+    // this is used by wxPthreadCleanup() only
+    static void Cleanup(wxThread *thread);
+#endif // HAVE_THREAD_CLEANUP_FUNCTIONS
+
 private:
     pthread_t     m_threadId;   // id of the thread
     wxThreadState m_state;      // see wxThreadState enum
@@ -575,9 +606,13 @@ private:
 // thread startup and exit functions
 // ----------------------------------------------------------------------------
 
-void *wxThreadInternal::PthreadStart(void *ptr)
+void *wxPthreadStart(void *ptr)
+{
+    return wxThreadInternal::PthreadStart((wxThread *)ptr);
+}
+
+void *wxThreadInternal::PthreadStart(wxThread *thread)
 {
-    wxThread *thread = (wxThread *)ptr;
     wxThreadInternal *pthread = thread->m_internal;
 
     // associate the thread pointer with the newly created thread so that
@@ -597,7 +632,7 @@ void *wxThreadInternal::PthreadStart(void *ptr)
 #if HAVE_THREAD_CLEANUP_FUNCTIONS
     // install the cleanup handler which will be called if the thread is
     // cancelled
-    pthread_cleanup_push(wxThreadInternal::PthreadCleanup, ptr);
+    pthread_cleanup_push(wxPthreadCleanup, thread);
 #endif // HAVE_THREAD_CLEANUP_FUNCTIONS
 
     // wait for the condition to be signaled from Run()
@@ -627,7 +662,7 @@ void *wxThreadInternal::PthreadStart(void *ptr)
                        pthread->GetId());
 
             // change the state of the thread to "exited" so that
-            // PthreadCleanup handler won't do anything from now (if it's
+            // wxPthreadCleanup handler won't do anything from now (if it's
             // called before we do pthread_cleanup_pop below)
             pthread->SetState(STATE_EXITED);
         }
@@ -661,10 +696,13 @@ void *wxThreadInternal::PthreadStart(void *ptr)
 #if HAVE_THREAD_CLEANUP_FUNCTIONS
 
 // this handler is called when the thread is cancelled
-void wxThreadInternal::PthreadCleanup(void *ptr)
+extern "C" void wxPthreadCleanup(void *ptr)
 {
-    wxThread *thread = (wxThread *) ptr;
+    wxThreadInternal::Cleanup((wxThread *)ptr);
+}
 
+void wxThreadInternal::Cleanup(wxThread *thread)
+{
     {
         wxCriticalSectionLocker lock(thread->m_critsect);
         if ( thread->m_internal->GetState() == STATE_EXITED )
@@ -725,8 +763,12 @@ void wxThreadInternal::Wait()
         wxMutexGuiLeave();
 
     bool isDetached = m_isDetached;
-    long id = (long)GetId();
-    wxLogTrace(TRACE_THREADS, _T("Starting to wait for thread %ld to exit."),
+#ifdef __VMS
+   long long id = (long long)GetId();
+#else
+   long id = (long)GetId();
+#endif
+   wxLogTrace(TRACE_THREADS, _T("Starting to wait for thread %ld to exit."),
                id);
 
     // wait until the thread terminates (we're blocking in _another_ thread,
@@ -847,7 +889,7 @@ void wxThread::Sleep(unsigned long milliseconds)
 
 int wxThread::GetCPUCount()
 {
-#if defined(__LINUX__)
+#if 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;
@@ -886,6 +928,19 @@ int wxThread::GetCPUCount()
     return -1;
 }
 
+#ifdef __VMS
+  // VMS is a 64 bit system and threads have 64 bit pointers.
+  // ??? also needed for other systems????
+unsigned long long wxThread::GetCurrentId()
+{
+    return (unsigned long long)pthread_self();
+#else
+unsigned long wxThread::GetCurrentId()
+{
+    return (unsigned long)pthread_self();
+#endif
+}
+
 bool wxThread::SetConcurrency(size_t level)
 {
 #ifdef HAVE_THR_SETCONCURRENCY
@@ -916,7 +971,7 @@ wxThread::wxThread(wxThreadKind kind)
     m_isDetached = kind == wxTHREAD_DETACHED;
 }
 
-wxThreadError wxThread::Create()
+wxThreadError wxThread::Create(unsigned int WXUNUSED(stackSize))
 {
     if ( m_internal->GetState() != STATE_NEW )
     {
@@ -944,7 +999,7 @@ wxThreadError wxThread::Create()
 #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();
@@ -1010,7 +1065,7 @@ wxThreadError wxThread::Create()
              (
                 m_internal->GetIdPtr(),
                 &attr,
-                wxThreadInternal::PthreadStart,
+                wxPthreadStart,
                 (void *)this
              );
 
@@ -1087,9 +1142,15 @@ unsigned int wxThread::GetPriority() const
     return m_internal->GetPriority();
 }
 
+#ifdef __VMS
+unsigned long long wxThread::GetId() const
+{
+    return (unsigned long long)m_internal->GetId();
+#else
 unsigned long wxThread::GetId() const
 {
     return (unsigned long)m_internal->GetId();
+#endif
 }
 
 // -----------------------------------------------------------------------------
@@ -1256,7 +1317,7 @@ wxThreadError wxThread::Kill()
             if ( m_isDetached )
             {
                 // if we use cleanup function, this will be done from
-                // PthreadCleanup()
+                // wxPthreadCleanup()
 #if !HAVE_THREAD_CLEANUP_FUNCTIONS
                 ScheduleThreadForDeletion();