implement event loop for console applications (heavily modified patch 1715735)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@46029 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/unix/app.h

@@ -0,0 +1,54 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/unix/app.h
+// Purpose:     wxAppConsole implementation for Unix
+// Author:      Lukasz Michalski
+// Created:     28/01/2005
+// RCS-ID:      $Id$
+// Copyright:   (c) Lukasz Michalski
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// wxApp subclass implementing event processing for console applications
+class WXDLLIMPEXP_BASE wxAppConsoleUnix : public wxAppConsole
+{
+public:
+    // override base class initialization
+    virtual bool Initialize(int& argc, wxChar** argv);
+
+
+    // Unix-specific: Unix signal handling
+    // -----------------------------------
+
+    // type of the function which can be registered as signal handler: notice
+    // that it isn't really a signal handler, i.e. it's not subject to the
+    // usual signal handlers constraints, because it is called later from
+    // CheckSignal() and not when the signal really occurs
+    typedef void (*SignalHandler)(int);
+
+    // Set signal handler for the given signal, SIG_DFL or SIG_IGN can be used
+    // instead of a function pointer
+    //
+    // Return true if handler was installed, false on error
+    bool SetSignalHandler(int signal, SignalHandler handler);
+
+    // Check if any Unix signals arrived since the last call and execute
+    // handlers for them
+    void CheckSignal();
+
+private:
+    // signal handler set up by SetSignalHandler() for all signals we handle,
+    // it just adds the signal to m_signalsCaught -- the real processing is
+    // done later, when CheckSignal() is called
+    static void HandleSignal(int signal);
+
+
+    // signals for which HandleSignal() had been called (reset from
+    // CheckSignal())
+    sigset_t m_signalsCaught;
+
+    // the signal handlers
+    WX_DECLARE_HASH_MAP(int, SignalHandler, wxIntegerHash, wxIntegerEqual, SignalHandlerHash);
+    SignalHandlerHash m_signalHandlerHash;
+
+    friend class GSocketGUIFunctionsTableBase;
+};