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Diffstat (limited to 'ace/Other/XtReactor.h')
-rw-r--r-- | ace/Other/XtReactor.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/ace/Other/XtReactor.h b/ace/Other/XtReactor.h new file mode 100644 index 00000000000..0104e946952 --- /dev/null +++ b/ace/Other/XtReactor.h @@ -0,0 +1,136 @@ +/* -*- C++ -*- */ + +//============================================================================= +/** + * @file XtReactor.h + * + * $Id$ + * + * @author Eric C. Newton's <ecn@clark.net> + * @author Kirill Rybaltchenko <Kirill.Rybaltchenko@cern.ch> + * @author Douglas C. Schmidt <schmidt@cs.wustl.edu> + */ +//============================================================================= + + +#ifndef ACE_XTREACTOR_H +#define ACE_XTREACTOR_H +#include "ace/pre.h" + +#include "ace/Select_Reactor.h" + +#if !defined (ACE_LACKS_PRAGMA_ONCE) +# pragma once +#endif /* ACE_LACKS_PRAGMA_ONCE */ + +#if defined (ACE_HAS_XT) + +//#define String XtString +#include /**/ <X11/Intrinsic.h> +//#undef String + +/** + * @class ACE_XtReactorID + * + * @brief This little class is necessary due to the way that Microsoft + * implements sockets to be pointers rather than indices. + */ +class ACE_Export ACE_XtReactorID +{ +public: + /// Magic cookie. + XtInputId id_; + + /// Underlying handle. + ACE_HANDLE handle_; + + /// Pointer to next node in the linked list. + ACE_XtReactorID *next_; +}; + +/** + * @class ACE_XtReactor + * + * @brief An object-oriented event demultiplexor and event handler + * dispatcher that uses the X Toolkit functions. + */ +class ACE_Export ACE_XtReactor : public ACE_Select_Reactor +{ +public: + // = Initialization and termination methods. + ACE_XtReactor (XtAppContext context = 0, + size_t size = DEFAULT_SIZE, + int restart = 0, + ACE_Sig_Handler * = 0); + virtual ~ACE_XtReactor (void); + + XtAppContext context (void) const; + void context (XtAppContext); + + // = Timer operations. + virtual long schedule_timer (ACE_Event_Handler *handler, + const void *arg, + const ACE_Time_Value &delay_time, + const ACE_Time_Value &interval); + virtual int reset_timer_interval (long timer_id, + const ACE_Time_Value &interval); + virtual int cancel_timer (ACE_Event_Handler *handler, + int dont_call_handle_close = 1); + + virtual int cancel_timer (long timer_id, + const void **arg = 0, + int dont_call_handle_close = 1); + +protected: + // = Register timers/handles with Xt. + /// Register a single <handler>. + virtual int register_handler_i (ACE_HANDLE handle, + ACE_Event_Handler *handler, + ACE_Reactor_Mask mask); + + /// Register a set of <handlers>. + virtual int register_handler_i (const ACE_Handle_Set &handles, + ACE_Event_Handler *handler, + ACE_Reactor_Mask mask); + + /// Remove the <handler> associated with this <handle>. + virtual int remove_handler_i (ACE_HANDLE handle, + ACE_Reactor_Mask mask); + + /// Remove a set of <handles>. + virtual int remove_handler_i (const ACE_Handle_Set &handles, + ACE_Reactor_Mask); + + /// Removes an Xt handle. + virtual void remove_XtInput (ACE_HANDLE handle); + + /// Wait for events to occur. + virtual int wait_for_multiple_events (ACE_Select_Reactor_Handle_Set &, + ACE_Time_Value *); + + ///Wait for Xt events to occur. + virtual int XtWaitForMultipleEvents (int, + ACE_Select_Reactor_Handle_Set &, + ACE_Time_Value *); + + XtAppContext context_; + ACE_XtReactorID *ids_; + XtIntervalId timeout_; + +private: + /// This method ensures there's an Xt timeout for the first timeout + /// in the Reactor's Timer_Queue. + void reset_timeout (void); + + // = Integrate with the X callback function mechanism. + static void TimerCallbackProc (XtPointer closure, XtIntervalId *id); + static void InputCallbackProc (XtPointer closure, int* source, XtInputId *id); + + /// Deny access since member-wise won't work... + ACE_XtReactor (const ACE_XtReactor &); + ACE_XtReactor &operator = (const ACE_XtReactor &); +}; +#endif /* ACE_HAS_XT */ + +#include "ace/post.h" +#endif /* ACE_XTREACTOR_H */ |