4 * Copyright 2003, 2004, 2005 Develer S.r.l. (http://www.develer.com/)
5 * Copyright 1999, 2001, 2003 Bernardo Innocenti <bernie@develer.com>
6 * This file is part of DevLib - See README.devlib for information.
9 * \brief Events handling
11 * This module implements a common system for executing
12 * a user defined action calling a hook function.
16 * \author Bernardo Innocenti <bernie@develer.com>
21 *#* Revision 1.3 2006/01/16 03:27:49 bernie
22 *#* Rename sig_t to sigbit_t to avoid clash with POSIX.
24 *#* Revision 1.2 2005/11/27 03:02:55 bernie
25 *#* Convert to appconfig.h.
27 *#* Revision 1.1 2005/11/27 01:39:48 bernie
28 *#* Move event.[ch] from kern/ to mware/.
30 *#* Revision 1.11 2005/04/11 19:10:28 bernie
31 *#* Include top-level headers from cfg/ subdir.
33 *#* Revision 1.10 2005/01/24 04:22:02 bernie
34 *#* Update copyright information.
36 *#* Revision 1.9 2005/01/24 04:19:55 bernie
37 *#* Remove obsolete names.
39 *#* Revision 1.8 2005/01/24 04:19:05 bernie
40 *#* Function pointer based event dispatching.
42 *#* Revision 1.7 2004/08/25 14:12:09 rasky
43 *#* Aggiornato il comment block dei log RCS
45 *#* Revision 1.6 2004/08/14 19:37:57 rasky
46 *#* Merge da SC: macros.h, pool.h, BIT_CHANGE, nome dei processi, etc.
48 *#* Revision 1.5 2004/07/30 14:30:27 rasky
49 *#* Resa la sig_signal interrupt safe (con il nuovo scheduler IRQ-safe)
50 *#* Rimossa event_doIntr (ora inutile) e semplificata la logica delle macro con funzioni inline
52 *#* Revision 1.4 2004/06/07 15:58:00 aleph
53 *#* Add function prototypes
55 *#* Revision 1.3 2004/06/06 18:25:44 bernie
56 *#* Rename event macros to look like regular functions.
58 *#* Revision 1.2 2004/06/03 11:27:09 bernie
59 *#* Add dual-license information.
61 *#* Revision 1.1 2004/05/23 17:27:00 bernie
62 *#* Import kern/ subdirectory.
68 #include <appconfig.h>
71 #include <cfg/config_kern.h>
72 #if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS
78 //! User defined callback type
79 typedef void (*Hook)(void *);
83 void (*action)(struct Event *);
86 #if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS
89 struct Process *sig_proc; /* Process to be signalled */
90 sigbit_t sig_bit; /* Signal to send */
95 Hook func; /* Pointer to softint hook */
96 void *user_data; /* Data to be passed back to user hook */
101 void event_hook_ignore(Event *event);
102 void event_hook_signal(Event *event);
103 void event_hook_softint(Event *event);
105 /*! Initialize the event \a e as a no-op */
106 #define event_initNone(e) \
107 ((e)->action = event_hook_ignore)
109 /*! Same as event_initNone(), but returns the initialized event */
110 INLINE Event event_createNone(void);
111 INLINE Event event_createNone(void)
114 e.action = event_hook_ignore;
118 /*! Initialize the event \a e with a software interrupt (call function \a f, with parameter \a u) */
119 #define event_initSoftInt(e,f,u) \
120 ((e)->action = event_hook_softint,(e)->Ev.Int.func = (f), (e)->Ev.Int.user_data = (u))
122 /*! Same as event_initSoftInt(), but returns the initialized event */
123 INLINE Event event_createSoftInt(Hook func, void *user_data)
126 e.action = event_hook_softint;
127 e.Ev.Int.func = func;
128 e.Ev.Int.user_data = user_data;
133 #if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS
135 /*! Initialize the event \a e with a signal (send signal \a s to process \a p) */
136 #define event_initSignal(e,p,s) \
137 ((e)->action = event_hook_signal,(e)->Ev.Sig.sig_proc = (p), (e)->Ev.Sig.sig_bit = (s))
139 /*! Same as event_initSignal(), but returns the initialized event */
140 INLINE Event event_createSignal(struct Process *proc, sigbit_t bit)
143 e.action = event_hook_signal;
144 e.Ev.Sig.sig_proc = proc;
145 e.Ev.Sig.sig_bit = bit;
151 /*! Trigger an event */
152 INLINE void event_do(struct Event *e)
157 #endif /* KERN_EVENT_H */