// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#include "wx/thread.h"
#include "wx/dynarray.h"
#include "wx/numdlg.h"
-
#include "wx/progdlg.h"
+// ----------------------------------------------------------------------------
+// resources
+// ----------------------------------------------------------------------------
+
#include "../sample.xpm"
+// ----------------------------------------------------------------------------
+// private classes
+// ----------------------------------------------------------------------------
+
// define this to use wxExecute in the exec tests, otherwise just use system
#define USE_EXECUTE
bool m_shuttingDown;
};
-// Create a new application object
-IMPLEMENT_APP(MyApp)
-
// Define a new frame type
class MyFrame: public wxFrame
{
DECLARE_EVENT_TABLE()
};
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
// ID for the menu commands
enum
{
MyFrame *m_frame;
};
-MyThread::MyThread(MyFrame *frame)
- : wxThread()
-{
- m_count = 0;
- m_frame = frame;
-}
-
-MyThread::~MyThread()
-{
- wxCriticalSectionLocker locker(wxGetApp().m_critsect);
-
- wxArrayThread& threads = wxGetApp().m_threads;
- threads.Remove(this);
-
- if ( threads.IsEmpty() )
- {
- // signal the main thread that there are no more threads left if it is
- // waiting for us
- if ( wxGetApp().m_shuttingDown )
- {
- wxGetApp().m_shuttingDown = false;
-
- wxGetApp().m_semAllDone.Post();
- }
- }
-}
-
-void *MyThread::Entry()
-{
- wxString text;
-
- text.Printf(wxT("Thread 0x%lx started (priority = %u).\n"),
- GetId(), GetPriority());
- WriteText(text);
- // wxLogMessage(text); -- test wxLog thread safeness
-
- for ( m_count = 0; m_count < 10; m_count++ )
- {
- // check if the application is shutting down: in this case all threads
- // should stop a.s.a.p.
- {
- wxCriticalSectionLocker locker(wxGetApp().m_critsect);
- if ( wxGetApp().m_shuttingDown )
- return NULL;
- }
-
- // check if just this thread was asked to exit
- if ( TestDestroy() )
- break;
-
- text.Printf(wxT("[%u] Thread 0x%lx here.\n"), m_count, GetId());
- WriteText(text);
-
- // wxSleep() can't be called from non-GUI thread!
- wxThread::Sleep(1000);
- }
-
- text.Printf(wxT("Thread 0x%lx finished.\n"), GetId());
- WriteText(text);
- // wxLogMessage(text); -- test wxLog thread safeness
-
- return NULL;
-}
-
// ----------------------------------------------------------------------------
// worker thread
// ----------------------------------------------------------------------------
unsigned m_count;
};
-MyWorkerThread::MyWorkerThread(MyFrame *frame)
- : wxThread()
-{
- m_frame = frame;
- m_count = 0;
-}
-
-void MyWorkerThread::OnExit()
-{
-}
-
-#define TEST_YIELD_RACE_CONDITION 0
-
-void *MyWorkerThread::Entry()
-{
-#if TEST_YIELD_RACE_CONDITION
- if ( TestDestroy() )
- return NULL;
-
- wxThreadEvent event( wxEVT_COMMAND_THREAD, WORKER_EVENT );
-
- event.SetInt( 50 );
- wxQueueEvent( m_frame, new wxThreadEvent(event) );
-
- event.SetInt(-1);
- wxQueueEvent( m_frame, new wxThreadEvent(event) );
-#else
- for ( m_count = 0; !m_frame->Cancelled() && (m_count < 100); m_count++ )
- {
- // check if we were asked to exit
- if ( TestDestroy() )
- break;
-
- // create any type of command event here
- wxThreadEvent event( wxEVT_COMMAND_THREAD, WORKER_EVENT );
- event.SetInt( m_count );
-
- // send in a thread-safe way
- wxQueueEvent( m_frame, new wxThreadEvent(event) );
-
- wxMilliSleep(200);
- }
-
- wxThreadEvent event( wxEVT_COMMAND_THREAD, WORKER_EVENT );
- event.SetInt(-1); // that's all
- wxQueueEvent( m_frame, new wxThreadEvent(event) );
-#endif
-
- return NULL;
-}
-
// ----------------------------------------------------------------------------
// a thread which simply calls wxExecute
// ----------------------------------------------------------------------------
wxString m_command;
};
-// ----------------------------------------------------------------------------
+// ============================================================================
// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// the application class
+// ----------------------------------------------------------------------------
+
+// Create a new application object
+IMPLEMENT_APP(MyApp)
+
+MyApp::MyApp()
+{
+ m_shuttingDown = false;
+}
+
+// `Main program' equivalent, creating windows and returning main app frame
+bool MyApp::OnInit()
+{
+ if ( !wxApp::OnInit() )
+ return false;
+
+ // uncomment this to get some debugging messages from the trace code
+ // on the console (or just set WXTRACE env variable to include "thread")
+ //wxLog::AddTraceMask("thread");
+
+ // Create the main frame window
+ MyFrame *frame = new MyFrame((wxFrame *)NULL, _T("wxWidgets threads sample"),
+ 50, 50, 450, 340);
+ SetTopWindow(frame);
+
+ // Show the frame
+ frame->Show(true);
+
+ return true;
+}
+
+// ----------------------------------------------------------------------------
+// MyFrame
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_IDLE(MyFrame::OnIdle)
END_EVENT_TABLE()
-MyApp::MyApp()
-{
- m_shuttingDown = false;
-}
-
-// `Main program' equivalent, creating windows and returning main app frame
-bool MyApp::OnInit()
+// My frame constructor
+MyFrame::MyFrame(wxFrame *frame, const wxString& title,
+ int x, int y, int w, int h)
+ : wxFrame(frame, wxID_ANY, title, wxPoint(x, y), wxSize(w, h))
{
- if ( !wxApp::OnInit() )
- return false;
-
- // uncomment this to get some debugging messages from the trace code
- // on the console (or just set WXTRACE env variable to include "thread")
- //wxLog::AddTraceMask("thread");
-
- // Create the main frame window
- MyFrame *frame = new MyFrame((wxFrame *)NULL, _T("wxWidgets threads sample"),
- 50, 50, 450, 340);
+ SetIcon(wxIcon(sample_xpm));
// Make a menubar
wxMenuBar *menuBar = new wxMenuBar;
menuHelp->Append(THREAD_ABOUT, _T("&About..."));
menuBar->Append(menuHelp, _T("&Help"));
- frame->SetMenuBar(menuBar);
-
- // Show the frame
- frame->Show(true);
-
- SetTopWindow(frame);
-
- return true;
-}
-
-// My frame constructor
-MyFrame::MyFrame(wxFrame *frame, const wxString& title,
- int x, int y, int w, int h)
- : wxFrame(frame, wxID_ANY, title, wxPoint(x, y), wxSize(w, h))
-{
- SetIcon(wxIcon(sample_xpm));
+ SetMenuBar(menuBar);
m_nRunning = m_nCount = 0;
return m_cancelled;
}
+
+
+// ----------------------------------------------------------------------------
+// MyThread
+// ----------------------------------------------------------------------------
+
+MyThread::MyThread(MyFrame *frame)
+ : wxThread()
+{
+ m_count = 0;
+ m_frame = frame;
+}
+
+MyThread::~MyThread()
+{
+ wxCriticalSectionLocker locker(wxGetApp().m_critsect);
+
+ wxArrayThread& threads = wxGetApp().m_threads;
+ threads.Remove(this);
+
+ if ( threads.IsEmpty() )
+ {
+ // signal the main thread that there are no more threads left if it is
+ // waiting for us
+ if ( wxGetApp().m_shuttingDown )
+ {
+ wxGetApp().m_shuttingDown = false;
+
+ wxGetApp().m_semAllDone.Post();
+ }
+ }
+}
+
+void *MyThread::Entry()
+{
+ wxString text;
+
+ text.Printf(wxT("Thread 0x%lx started (priority = %u).\n"),
+ GetId(), GetPriority());
+ WriteText(text);
+ // wxLogMessage(text); -- test wxLog thread safeness
+
+ for ( m_count = 0; m_count < 10; m_count++ )
+ {
+ // check if the application is shutting down: in this case all threads
+ // should stop a.s.a.p.
+ {
+ wxCriticalSectionLocker locker(wxGetApp().m_critsect);
+ if ( wxGetApp().m_shuttingDown )
+ return NULL;
+ }
+
+ // check if just this thread was asked to exit
+ if ( TestDestroy() )
+ break;
+
+ text.Printf(wxT("[%u] Thread 0x%lx here.\n"), m_count, GetId());
+ WriteText(text);
+
+ // wxSleep() can't be called from non-GUI thread!
+ wxThread::Sleep(1000);
+ }
+
+ text.Printf(wxT("Thread 0x%lx finished.\n"), GetId());
+ WriteText(text);
+ // wxLogMessage(text); -- test wxLog thread safeness
+
+ return NULL;
+}
+
+
+// ----------------------------------------------------------------------------
+// MyWorkerThread
+// ----------------------------------------------------------------------------
+
+MyWorkerThread::MyWorkerThread(MyFrame *frame)
+ : wxThread()
+{
+ m_frame = frame;
+ m_count = 0;
+}
+
+void MyWorkerThread::OnExit()
+{
+}
+
+// define this symbol to 1 to test if the YieldFor() call in the wxProgressDialog::Update
+// function provokes a race condition in which the second wxThreadEvent posted by
+// MyWorkerThread::Entry is processed by the YieldFor() call of wxProgressDialog::Update
+// and results in the destruction of the progress dialog itself, resulting in a crash later.
+#define TEST_YIELD_RACE_CONDITION 0
+
+void *MyWorkerThread::Entry()
+{
+#if TEST_YIELD_RACE_CONDITION
+ if ( TestDestroy() )
+ return NULL;
+
+ wxThreadEvent event( wxEVT_COMMAND_THREAD, WORKER_EVENT );
+
+ event.SetInt( 50 );
+ wxQueueEvent( m_frame, event.Clone() );
+
+ event.SetInt(-1);
+ wxQueueEvent( m_frame, event.Clone() );
+#else
+ for ( m_count = 0; !m_frame->Cancelled() && (m_count < 100); m_count++ )
+ {
+ // check if we were asked to exit
+ if ( TestDestroy() )
+ break;
+
+ // create any type of command event here
+ wxThreadEvent event( wxEVT_COMMAND_THREAD, WORKER_EVENT );
+ event.SetInt( m_count );
+
+ // send in a thread-safe way
+ wxQueueEvent( m_frame, event.Clone() );
+
+ wxMilliSleep(200);
+ }
+
+ wxThreadEvent event( wxEVT_COMMAND_THREAD, WORKER_EVENT );
+ event.SetInt(-1); // that's all
+ wxQueueEvent( m_frame, event.Clone() );
+#endif
+
+ return NULL;
+}
+
projects / wxWidgets.git / commitdiff
