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 1.8 2005/01/24 04:19:05 bernie
22 *#* Function pointer based event dispatching.
24 *#* Revision 1.7 2004/08/25 14:12:09 rasky
25 *#* Aggiornato il comment block dei log RCS
27 *#* Revision 1.6 2004/08/14 19:37:57 rasky
28 *#* Merge da SC: macros.h, pool.h, BIT_CHANGE, nome dei processi, etc.
30 *#* Revision 1.5 2004/07/30 14:30:27 rasky
31 *#* Resa la sig_signal interrupt safe (con il nuovo scheduler IRQ-safe)
32 *#* Rimossa event_doIntr (ora inutile) e semplificata la logica delle macro con funzioni inline
34 *#* Revision 1.4 2004/06/07 15:58:00 aleph
35 *#* Add function prototypes
37 *#* Revision 1.3 2004/06/06 18:25:44 bernie
38 *#* Rename event macros to look like regular functions.
40 *#* Revision 1.2 2004/06/03 11:27:09 bernie
41 *#* Add dual-license information.
43 *#* Revision 1.1 2004/05/23 17:27:00 bernie
44 *#* Import kern/ subdirectory.
53 #include "config_kern.h"
54 #if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS
63 //! User defined callback type
64 typedef void (*Hook)(void *);
68 void (*action)(struct Event *);
71 #if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS
74 struct Process *sig_proc; /* Process to be signalled */
75 sig_t sig_bit; /* Signal to send */
80 Hook func; /* Pointer to softint hook */
81 void *user_data; /* Data to be passed back to user hook */
86 void event_hook_ignore(Event *event);
87 void event_hook_signal(Event *event);
88 void event_hook_softint(Event *event);
90 /*! Initialize the event \a e as a no-op */
91 #define event_initNone(e) \
92 ((e)->action = event_hook_ignore)
94 /*! Same as event_initNone(), but returns the initialized event */
95 INLINE Event event_createNone(void);
96 INLINE Event event_createNone(void)
99 e.action = event_hook_ignore;
103 /*! Initialize the event \a e with a software interrupt (call function \a f, with parameter \a u) */
104 #define event_initSoftInt(e,f,u) \
105 ((e)->action = event_hook_softint,(e)->Ev.Int.func = (f), (e)->Ev.Int.user_data = (u))
107 /*! Same as event_initSoftInt(), but returns the initialized event */
108 INLINE Event event_createSoftInt(Hook func, void* user_data)
111 e.action = event_hook_softint;
112 e.Ev.Int.func = func;
113 e.Ev.Int.user_data = user_data;
118 #if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS
120 /*! Initialize the event \a e with a signal (send signal \a s to process \a p) */
121 #define event_initSignal(e,p,s) \
122 ((e)->action = event_hook_signal,(e)->Ev.Sig.sig_proc = (p), (e)->Ev.Sig.sig_bit = (s))
124 /*! Same as event_initSignal(), but returns the initialized event */
125 INLINE Event event_createSignal(struct Process* proc, sig_t bit)
128 e.action = event_hook_signal;
129 e.Ev.Sig.sig_proc = proc;
130 e.Ev.Sig.sig_bit = bit;
136 /*! Trigger an event */
137 INLINE void event_do(struct Event* e)
142 #ifdef CONFIG_KERN_OLDNAMES
143 #define INITEVENT_SIG event_initSignal
144 #define INITEVENT_INT event_initSoftInt
145 #define DOEVENT event_do
146 #define DOEVENT_INTR event_do
149 #endif /* KERN_EVENT_H */