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 1.10 2005/01/24 04:22:02 bernie
22 *#* Update copyright information.
24 *#* Revision 1.9 2005/01/24 04:19:55 bernie
25 *#* Remove obsolete names.
27 *#* Revision 1.8 2005/01/24 04:19:05 bernie
28 *#* Function pointer based event dispatching.
30 *#* Revision 1.7 2004/08/25 14:12:09 rasky
31 *#* Aggiornato il comment block dei log RCS
33 *#* Revision 1.6 2004/08/14 19:37:57 rasky
34 *#* Merge da SC: macros.h, pool.h, BIT_CHANGE, nome dei processi, etc.
36 *#* Revision 1.5 2004/07/30 14:30:27 rasky
37 *#* Resa la sig_signal interrupt safe (con il nuovo scheduler IRQ-safe)
38 *#* Rimossa event_doIntr (ora inutile) e semplificata la logica delle macro con funzioni inline
40 *#* Revision 1.4 2004/06/07 15:58:00 aleph
41 *#* Add function prototypes
43 *#* Revision 1.3 2004/06/06 18:25:44 bernie
44 *#* Rename event macros to look like regular functions.
46 *#* Revision 1.2 2004/06/03 11:27:09 bernie
47 *#* Add dual-license information.
49 *#* Revision 1.1 2004/05/23 17:27:00 bernie
50 *#* Import kern/ subdirectory.
59 #include "config_kern.h"
60 #if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS
69 //! User defined callback type
70 typedef void (*Hook)(void *);
74 void (*action)(struct Event *);
77 #if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS
80 struct Process *sig_proc; /* Process to be signalled */
81 sig_t sig_bit; /* Signal to send */
86 Hook func; /* Pointer to softint hook */
87 void *user_data; /* Data to be passed back to user hook */
92 void event_hook_ignore(Event *event);
93 void event_hook_signal(Event *event);
94 void event_hook_softint(Event *event);
96 /*! Initialize the event \a e as a no-op */
97 #define event_initNone(e) \
98 ((e)->action = event_hook_ignore)
100 /*! Same as event_initNone(), but returns the initialized event */
101 INLINE Event event_createNone(void);
102 INLINE Event event_createNone(void)
105 e.action = event_hook_ignore;
109 /*! Initialize the event \a e with a software interrupt (call function \a f, with parameter \a u) */
110 #define event_initSoftInt(e,f,u) \
111 ((e)->action = event_hook_softint,(e)->Ev.Int.func = (f), (e)->Ev.Int.user_data = (u))
113 /*! Same as event_initSoftInt(), but returns the initialized event */
114 INLINE Event event_createSoftInt(Hook func, void* user_data)
117 e.action = event_hook_softint;
118 e.Ev.Int.func = func;
119 e.Ev.Int.user_data = user_data;
124 #if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS
126 /*! Initialize the event \a e with a signal (send signal \a s to process \a p) */
127 #define event_initSignal(e,p,s) \
128 ((e)->action = event_hook_signal,(e)->Ev.Sig.sig_proc = (p), (e)->Ev.Sig.sig_bit = (s))
130 /*! Same as event_initSignal(), but returns the initialized event */
131 INLINE Event event_createSignal(struct Process* proc, sig_t bit)
134 e.action = event_hook_signal;
135 e.Ev.Sig.sig_proc = proc;
136 e.Ev.Sig.sig_bit = bit;
142 /*! Trigger an event */
143 INLINE void event_do(struct Event* e)
148 #endif /* KERN_EVENT_H */