Fix another crash when conversion fails in Unix PostScript code.

[wxWidgets.git] / src / os2 / thread.cpp

diff --git a/src/os2/thread.cpp b/src/os2/thread.cpp
index 33cb46646db39390f910b6773a67bf33b75dd38b..94bff21e7c633faa8b618cf4d986b419ed3475d1 100644 (file)
--- a/src/os2/thread.cpp
+++ b/src/os2/thread.cpp
@@ -4,7 +4,6 @@
 // Author:      Original from Wolfram Gloger/Guilhem Lavaux/David Webster
 // Modified by: Stefan Neis
 // Created:     04/22/98
-// RCS-ID:      $Id$
 // Copyright:   (c) Stefan Neis (2003)
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
@@ -23,11 +22,11 @@
 #ifndef WX_PRECOMP
     #include "wx/intl.h"
     #include "wx/log.h"
+    #include "wx/app.h"
+    #include "wx/module.h"
 #endif //WX_PRECOMP
 
-#include "wx/app.h"
 #include "wx/apptrait.h"
-#include "wx/module.h"
 #include "wx/utils.h"
 
 #include <stdio.h>
@@ -57,7 +56,7 @@ enum wxThreadState
 
 // id of the main thread - the one which can call GUI functions without first
 // calling wxMutexGuiEnter()
-static ULONG                        s_ulIdMainThread = 1;
+wxThreadIdType                      wxThread::ms_idMainThread = 0;
 wxMutex*                            p_wxMainMutex;
 
 // OS2 substitute for Tls pointer the current parent thread object
@@ -96,7 +95,8 @@ public:
     bool IsOk() const { return m_vMutex != NULL; }
 
     wxMutexError Lock() { return LockTimeout(SEM_INDEFINITE_WAIT); }
-    wxMutexError TryLock() { return LockTimeout(SEM_IMMEDIATE_RETURN); }
+    wxMutexError Lock(unsigned long ms) { return LockTimeout(ms); }
+    wxMutexError TryLock();
     wxMutexError Unlock();
 
 private:
@@ -113,7 +113,7 @@ wxMutexInternal::wxMutexInternal(wxMutexType WXUNUSED(eMutexType))
     APIRET ulrc = ::DosCreateMutexSem(NULL, &m_vMutex, 0L, FALSE);
     if (ulrc != 0)
     {
-        wxLogSysError(_("Can not create mutex."));
+        wxLogSysError(_("Cannot create mutex."));
         m_vMutex = NULL;
     }
 }
@@ -123,10 +123,20 @@ wxMutexInternal::~wxMutexInternal()
     if (m_vMutex)
     {
         if (::DosCloseMutexSem(m_vMutex))
-            wxLogLastError(_T("DosCloseMutexSem(mutex)"));
+        {
+            wxLogLastError(wxT("DosCloseMutexSem(mutex)"));
+        }
     }
 }
 
+wxMutexError wxMutexInternal::TryLock()
+{
+    const wxMutexError rc = LockTimeout( SEM_IMMEDIATE_RETURN );
+
+    // we have a special return code for timeout in this case
+    return rc == wxMUTEX_TIMEOUT ? wxMUTEX_BUSY : rc;
+}
+
 wxMutexError wxMutexInternal::LockTimeout(ULONG ulMilliseconds)
 {
     APIRET                          ulrc;
@@ -136,6 +146,7 @@ wxMutexError wxMutexInternal::LockTimeout(ULONG ulMilliseconds)
     switch (ulrc)
     {
         case ERROR_TIMEOUT:
+            return wxMUTEX_TIMEOUT;
         case ERROR_TOO_MANY_SEM_REQUESTS:
             return wxMUTEX_BUSY;
 
@@ -209,7 +220,7 @@ wxSemaphoreInternal::wxSemaphoreInternal(int initialcount, int maxcount)
     ulrc = ::DosCreateMutexSem(NULL, &m_vMutex, 0L, FALSE);
     if (ulrc != 0)
     {
-        wxLogLastError(_T("DosCreateMutexSem()"));
+        wxLogLastError(wxT("DosCreateMutexSem()"));
         m_vMutex = NULL;
         m_vEvent = NULL;
         return;
@@ -217,7 +228,7 @@ wxSemaphoreInternal::wxSemaphoreInternal(int initialcount, int maxcount)
     ulrc = ::DosCreateEventSem(NULL, &m_vEvent, 0L, FALSE);
     if ( ulrc != 0)
     {
-        wxLogLastError(_T("DosCreateEventSem()"));
+        wxLogLastError(wxT("DosCreateEventSem()"));
         ::DosCloseMutexSem(m_vMutex);
         m_vMutex = NULL;
         m_vEvent = NULL;
@@ -232,11 +243,11 @@ wxSemaphoreInternal::~wxSemaphoreInternal()
     {
         if ( ::DosCloseEventSem(m_vEvent) )
         {
-            wxLogLastError(_T("DosCloseEventSem(semaphore)"));
+            wxLogLastError(wxT("DosCloseEventSem(semaphore)"));
         }
         if ( ::DosCloseMutexSem(m_vMutex) )
         {
-            wxLogLastError(_T("DosCloseMutexSem(semaphore)"));
+            wxLogLastError(wxT("DosCloseMutexSem(semaphore)"));
         }
         else
             m_vEvent = NULL;
@@ -260,7 +271,7 @@ wxSemaError wxSemaphoreInternal::WaitTimeout(unsigned long ulMilliseconds)
                     return wxSEMA_TIMEOUT;
 
             default:
-                wxLogLastError(_T("DosWaitEventSem(semaphore)"));
+                wxLogLastError(wxT("DosWaitEventSem(semaphore)"));
                 return wxSEMA_MISC_ERROR;
         }
         ulrc = :: DosRequestMutexSem(m_vMutex, ulMilliseconds);
@@ -320,7 +331,7 @@ wxSemaError wxSemaphoreInternal::Post()
         return wxSEMA_OVERFLOW;
     if ( ulrc != NO_ERROR && ulrc != ERROR_ALREADY_POSTED )
     {
-        wxLogLastError(_T("DosPostEventSem(semaphore)"));
+        wxLogLastError(wxT("DosPostEventSem(semaphore)"));
 
         return wxSEMA_MISC_ERROR;
     }
@@ -342,7 +353,7 @@ public:
     {
         m_hThread = 0;
         m_eState = STATE_NEW;
-        m_nPriority = WXTHREAD_DEFAULT_PRIORITY;
+        m_nPriority = wxPRIORITY_DEFAULT;
     }
 
     ~wxThreadInternal()
@@ -485,7 +496,7 @@ bool wxThreadInternal::Create( wxThread* pThread,
         return false;
     }
     m_hThread = tid;
-    if (m_nPriority != WXTHREAD_DEFAULT_PRIORITY)
+    if (m_nPriority != wxPRIORITY_DEFAULT)
     {
         SetPriority(m_nPriority);
     }
@@ -499,7 +510,7 @@ bool wxThreadInternal::Suspend()
 
     if (ulrc != 0)
     {
-        wxLogSysError(_("Can not suspend thread %lu"), m_hThread);
+        wxLogSysError(_("Cannot suspend thread %lu"), m_hThread);
         return false;
     }
     m_eState = STATE_PAUSED;
@@ -513,7 +524,7 @@ bool wxThreadInternal::Resume()
 
     if (ulrc != 0)
     {
-        wxLogSysError(_("Can not resume thread %lu"), m_hThread);
+        wxLogSysError(_("Cannot resume thread %lu"), m_hThread);
         return false;
     }
 
@@ -537,19 +548,6 @@ wxThread *wxThread::This()
     return pThread;
 }
 
-bool wxThread::IsMain()
-{
-    PTIB ptib;
-    PPIB ppib;
-
-    ::DosGetInfoBlocks(&ptib, &ppib);
-
-    if (ptib->tib_ptib2->tib2_ultid == s_ulIdMainThread)
-        return true;
-
-    return false;
-}
-
 #ifdef Yield
     #undef Yield
 #endif
@@ -559,13 +557,6 @@ void wxThread::Yield()
     ::DosSleep(0);
 }
 
-void wxThread::Sleep(
-  unsigned long                     ulMilliseconds
-)
-{
-    ::DosSleep(ulMilliseconds);
-}
-
 int wxThread::GetCPUCount()
 {
     ULONG CPUCount;
@@ -579,18 +570,18 @@ int wxThread::GetCPUCount()
     return CPUCount;
 }
 
-unsigned long wxThread::GetCurrentId()
+wxThreadIdType wxThread::GetCurrentId()
 {
     PTIB                            ptib;
     PPIB                            ppib;
 
     ::DosGetInfoBlocks(&ptib, &ppib);
-    return (unsigned long) ptib->tib_ptib2->tib2_ultid;
+    return (wxThreadIdType) ptib->tib_ptib2->tib2_ultid;
 }
 
 bool wxThread::SetConcurrency(size_t level)
 {
-    wxASSERT_MSG( IsMain(), _T("should only be called from the main thread") );
+    wxASSERT_MSG( IsMain(), wxT("should only be called from the main thread") );
 
     // ok only for the default one
     if ( level == 0 )
@@ -634,6 +625,14 @@ wxThreadError wxThread::Run()
 {
     wxCriticalSectionLocker         lock((wxCriticalSection &)m_critsect);
 
+    // Create the thread if it wasn't created yet with an explicit
+    // Create() call:
+    if ( !m_internal->GetHandle() )
+    {
+        if ( !m_internal->Create(this, 0) )
+            return wxTHREAD_NO_RESOURCE;
+    }
+
     if ( m_internal->GetState() != STATE_NEW )
     {
         // actually, it may be almost any state at all, not only STATE_RUNNING
@@ -669,18 +668,18 @@ wxThreadError wxThread::Resume()
 // stopping thread
 // ---------------
 
-wxThread::ExitCode wxThread::Wait()
+wxThread::ExitCode wxThread::Wait(wxThreadWait waitMode)
 {
     // although under Windows we can wait for any thread, it's an error to
     // wait for a detached one in wxWin API
     wxCHECK_MSG( !IsDetached(), (ExitCode)-1,
-                 _T("can't wait for detached thread") );
+                 wxT("can't wait for detached thread") );
     ExitCode rc = (ExitCode)-1;
-    (void)Delete(&rc);
+    (void)Delete(&rc, waitMode);
     return(rc);
 }
 
-wxThreadError wxThread::Delete(ExitCode *pRc)
+wxThreadError wxThread::Delete(ExitCode *pRc, wxThreadWait WXUNUSED(waitMode))
 {
     ExitCode rc = 0;
 
@@ -934,12 +933,8 @@ bool wxThreadModule::OnInit()
     gs_pCritsectGui = new wxCriticalSection();
     gs_pCritsectGui->Enter();
 
-    PTIB ptib;
-    PPIB ppib;
-
-    ::DosGetInfoBlocks(&ptib, &ppib);
+    wxThread::ms_idMainThread = wxThread::GetCurrentId();
 
-    s_ulIdMainThread = ptib->tib_ptib2->tib2_ultid;
     return true;
 }
 
@@ -975,7 +970,7 @@ void WXDLLEXPORT wxWakeUpMainThread()
 #endif
 }
 
-void WXDLLEXPORT wxMutexGuiEnter()
+void wxMutexGuiEnterImpl()
 {
     // this would dead lock everything...
     wxASSERT_MSG( !wxThread::IsMain(),
@@ -997,7 +992,7 @@ void WXDLLEXPORT wxMutexGuiEnter()
     gs_pCritsectGui->Enter();
 }
 
-void WXDLLEXPORT wxMutexGuiLeave()
+void wxMutexGuiLeaveImpl()
 {
     wxCriticalSectionLocker enter(*gs_pCritsectWaitingForGui);