check that the version of __sync_sub_and_fetch that returns a value is supported...

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

diff --git a/src/unix/threadpsx.cpp b/src/unix/threadpsx.cpp
index 983ac3632ad9fc2fa5b7e518296d53c1c30be756..0384805c1ad09e9f98354e583ef09a43b0d2ba5f 100644 (file)
--- a/src/unix/threadpsx.cpp
+++ b/src/unix/threadpsx.cpp
@@ -27,8 +27,10 @@
 #if wxUSE_THREADS
 
 #include "wx/thread.h"
+#include "wx/except.h"
 
 #ifndef WX_PRECOMP
+    #include "wx/app.h"
     #include "wx/dynarray.h"
     #include "wx/intl.h"
     #include "wx/log.h"
@@ -163,11 +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;
@@ -245,7 +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:
@@ -255,19 +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);
@@ -763,11 +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);
@@ -1248,7 +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);
             }
@@ -1479,7 +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