// Created: 04/22/98
// RCS-ID: $Id$
// Copyright: (c) Stefan Neis (2003)
-//
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
- #pragma implementation "thread.h"
-#endif
-
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#if wxUSE_THREADS
-#include <stdio.h>
+#include "wx/thread.h"
+
+#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/intl.h"
#include "wx/utils.h"
-#include "wx/log.h"
-#include "wx/thread.h"
+
+#include <stdio.h>
#define INCL_DOSSEMAPHORES
#define INCL_DOSPROCESS
// OS2 substitute for Tls pointer the current parent thread object
wxThread* m_pThread; // pointer to the wxWidgets thread object
-// if it's FALSE, some secondary thread is holding the GUI lock
-static bool gs_bGuiOwnedByMainThread = TRUE;
+// if it's false, some secondary thread is holding the GUI lock
+static bool gs_bGuiOwnedByMainThread = true;
// critical section which controls access to all GUI functions: any secondary
// thread (i.e. except the main one) must enter this crit section before doing
static size_t gs_nWaitingForGui = 0;
// are we waiting for a thread termination?
-static bool gs_bWaitingForThread = FALSE;
+static bool gs_bWaitingForThread = false;
// ============================================================================
// OS/2 implementation of thread and related classes
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:
// (Calls to DosRequestMutexSem and DosReleaseMutexSem can be nested, but
// the request count for a semaphore cannot exceed 65535. If an attempt is
// made to exceed this number, ERROR_TOO_MANY_SEM_REQUESTS is returned.)
-wxMutexInternal::wxMutexInternal(
- wxMutexType WXUNUSED(eMutexType)
-)
+wxMutexInternal::wxMutexInternal(wxMutexType WXUNUSED(eMutexType))
{
- APIRET ulrc;
-
- ulrc = ::DosCreateMutexSem(NULL, &m_vMutex, 0L, FALSE);
+ APIRET ulrc = ::DosCreateMutexSem(NULL, &m_vMutex, 0L, FALSE);
if (ulrc != 0)
{
wxLogSysError(_("Can not create 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;
switch (ulrc)
{
case ERROR_TIMEOUT:
+ return wxMUTEX_TIMEOUT;
case ERROR_TOO_MANY_SEM_REQUESTS:
return wxMUTEX_BUSY;
unsigned int m_nPriority; // thread priority in "wx" units
};
-void wxThreadInternal::OS2ThreadStart(
- void * pParam
-)
+void wxThreadInternal::OS2ThreadStart( void * pParam )
{
- DWORD dwRet;
+ DWORD dwRet;
bool bWasCancelled;
wxThread *pThread = (wxThread *)pParam;
if ( pThread->m_internal->GetState() == STATE_EXITED )
{
dwRet = (DWORD)-1;
- bWasCancelled = TRUE;
+ bWasCancelled = true;
}
else // do run thread
{
}
}
-bool wxThreadInternal::Create(
- wxThread* pThread
-, unsigned int uStackSize
-)
+bool wxThreadInternal::Create( wxThread* pThread,
+ unsigned int uStackSize)
{
- int tid;
+ int tid;
if (!uStackSize)
- uStackSize = 131072;
+ uStackSize = 131072;
+
pThread->m_critsect.Enter();
tid = _beginthread(wxThreadInternal::OS2ThreadStart,
NULL, uStackSize, pThread);
{
wxLogSysError(_("Can't create thread"));
- return FALSE;
+ return false;
}
m_hThread = tid;
if (m_nPriority != WXTHREAD_DEFAULT_PRIORITY)
SetPriority(m_nPriority);
}
- return(TRUE);
+ return true;
}
bool wxThreadInternal::Suspend()
{
- ULONG ulrc = ::DosSuspendThread(m_hThread);
+ ULONG ulrc = ::DosSuspendThread(m_hThread);
if (ulrc != 0)
{
wxLogSysError(_("Can not suspend thread %lu"), m_hThread);
- return FALSE;
+ return false;
}
m_eState = STATE_PAUSED;
- return TRUE;
+
+ return true;
}
bool wxThreadInternal::Resume()
{
- ULONG ulrc = ::DosResumeThread(m_hThread);
+ ULONG ulrc = ::DosResumeThread(m_hThread);
if (ulrc != 0)
{
wxLogSysError(_("Can not resume thread %lu"), m_hThread);
- return FALSE;
+ return false;
}
// don't change the state from STATE_EXITED because it's special and means
m_eState = STATE_RUNNING;
}
- return TRUE;
+ return true;
}
// static functions
bool wxThread::IsMain()
{
- PTIB ptib;
- PPIB ppib;
+ PTIB ptib;
+ PPIB ppib;
::DosGetInfoBlocks(&ptib, &ppib);
if (ptib->tib_ptib2->tib2_ultid == s_ulIdMainThread)
- return TRUE;
- return FALSE;
+ return true;
+
+ return false;
}
#ifdef Yield
// we might need to resume the thread, but we might also not need to cancel
// it if it doesn't run yet
- bool shouldResume = FALSE,
- shouldCancel = TRUE,
- isRunning = FALSE;
+ bool shouldResume = false,
+ shouldCancel = true,
+ isRunning = false;
// check if the thread already started to run
{
Resume(); // it knows about STATE_EXITED special case
- shouldCancel = FALSE;
- isRunning = TRUE;
+ shouldCancel = false;
+ isRunning = true;
- // shouldResume is correctly set to FALSE here
+ // shouldResume is correctly set to false here
}
else
{
if ( shouldResume )
Resume();
- TID hThread = m_internal->GetHandle();
+ TID hThread = m_internal->GetHandle();
if ( isRunning || IsRunning())
{
if (IsMain())
{
// set flag for wxIsWaitingForThread()
- gs_bWaitingForThread = TRUE;
+ gs_bWaitingForThread = true;
}
// ask the thread to terminate
if ( IsMain() )
{
- gs_bWaitingForThread = FALSE;
+ gs_bWaitingForThread = false;
}
}
return wxTHREAD_NO_ERROR;
}
-void wxThread::Exit(
- ExitCode pStatus
-)
+void wxThread::Exit(ExitCode WXUNUSED(pStatus))
{
delete this;
_endthread();
gs_pCritsectGui = new wxCriticalSection();
gs_pCritsectGui->Enter();
- PTIB ptib;
- PPIB ppib;
+ PTIB ptib;
+ PPIB ppib;
::DosGetInfoBlocks(&ptib, &ppib);
s_ulIdMainThread = ptib->tib_ptib2->tib2_ultid;
- return TRUE;
+ return true;
}
void wxThreadModule::OnExit()
if ( wxThread::IsMain() )
{
- gs_bGuiOwnedByMainThread = FALSE;
+ gs_bGuiOwnedByMainThread = false;
}
else
{
{
gs_pCritsectGui->Enter();
- gs_bGuiOwnedByMainThread = TRUE;
+ gs_bGuiOwnedByMainThread = true;
}
//else: already have it, nothing to do
}
projects / wxWidgets.git / blobdiff