4 * Copyright 2003,2004 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 devlib/README 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 1.9 2005/01/24 04:19:55 bernie
22 *#* Remove obsolete names.
24 *#* Revision 1.8 2005/01/24 04:19:05 bernie
25 *#* Function pointer based event dispatching.
27 *#* Revision 1.7 2004/08/25 14:12:09 rasky
28 *#* Aggiornato il comment block dei log RCS
30 *#* Revision 1.6 2004/08/14 19:37:57 rasky
31 *#* Merge da SC: macros.h, pool.h, BIT_CHANGE, nome dei processi, etc.
33 *#* Revision 1.5 2004/07/30 14:30:27 rasky
34 *#* Resa la sig_signal interrupt safe (con il nuovo scheduler IRQ-safe)
35 *#* Rimossa event_doIntr (ora inutile) e semplificata la logica delle macro con funzioni inline
37 *#* Revision 1.4 2004/06/07 15:58:00 aleph
38 *#* Add function prototypes
40 *#* Revision 1.3 2004/06/06 18:25:44 bernie
41 *#* Rename event macros to look like regular functions.
43 *#* Revision 1.2 2004/06/03 11:27:09 bernie
44 *#* Add dual-license information.
46 *#* Revision 1.1 2004/05/23 17:27:00 bernie
47 *#* Import kern/ subdirectory.
56 #include "config_kern.h"
57 #if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS
66 //! User defined callback type
67 typedef void (*Hook)(void *);
71 void (*action)(struct Event *);
74 #if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS
77 struct Process *sig_proc; /* Process to be signalled */
78 sig_t sig_bit; /* Signal to send */
83 Hook func; /* Pointer to softint hook */
84 void *user_data; /* Data to be passed back to user hook */
89 void event_hook_ignore(Event *event);
90 void event_hook_signal(Event *event);
91 void event_hook_softint(Event *event);
93 /*! Initialize the event \a e as a no-op */
94 #define event_initNone(e) \
95 ((e)->action = event_hook_ignore)
97 /*! Same as event_initNone(), but returns the initialized event */
98 INLINE Event event_createNone(void);
99 INLINE Event event_createNone(void)
102 e.action = event_hook_ignore;
106 /*! Initialize the event \a e with a software interrupt (call function \a f, with parameter \a u) */
107 #define event_initSoftInt(e,f,u) \
108 ((e)->action = event_hook_softint,(e)->Ev.Int.func = (f), (e)->Ev.Int.user_data = (u))
110 /*! Same as event_initSoftInt(), but returns the initialized event */
111 INLINE Event event_createSoftInt(Hook func, void* user_data)
114 e.action = event_hook_softint;
115 e.Ev.Int.func = func;
116 e.Ev.Int.user_data = user_data;
121 #if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS
123 /*! Initialize the event \a e with a signal (send signal \a s to process \a p) */
124 #define event_initSignal(e,p,s) \
125 ((e)->action = event_hook_signal,(e)->Ev.Sig.sig_proc = (p), (e)->Ev.Sig.sig_bit = (s))
127 /*! Same as event_initSignal(), but returns the initialized event */
128 INLINE Event event_createSignal(struct Process* proc, sig_t bit)
131 e.action = event_hook_signal;
132 e.Ev.Sig.sig_proc = proc;
133 e.Ev.Sig.sig_bit = bit;
139 /*! Trigger an event */
140 INLINE void event_do(struct Event* e)
145 #endif /* KERN_EVENT_H */