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  1. /*
  2.  * Copyright (c) 2009 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup generic
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef KERN_EVENT_H_
  36. #define KERN_EVENT_H_
  37.  
  38. #include <ipc/event_types.h>
  39. #include <arch/types.h>
  40. #include <synch/spinlock.h>
  41. #include <ipc/ipc.h>
  42.  
  43. /** Event notification structure. */
  44. typedef struct {
  45.     SPINLOCK_DECLARE(lock);
  46.    
  47.     /** Answerbox for notifications. */
  48.     answerbox_t *answerbox;
  49.     /** Method to be used for the notification. */
  50.     unative_t method;
  51.     /** Counter. */
  52.     count_t counter;
  53. } event_t;
  54.  
  55. extern void event_init(void);
  56. extern unative_t sys_event_subscribe(unative_t, unative_t);
  57. extern bool event_is_subscribed(event_type_t);
  58. extern void event_cleanup_answerbox(answerbox_t *);
  59.  
  60. #define event_notify_0(e) \
  61.     event_notify((e), 0, 0, 0, 0, 0)
  62. #define event_notify_1(e, a1) \
  63.     event_notify((e), (a1), 0, 0, 0, 0)
  64. #define event_notify_2(e, a1, a2) \
  65.     event_notify((e), (a1), (a2), 0, 0, 0)
  66. #define event_notify_3(e, a1, a2, a3) \
  67.     event_notify((e), (a1), (a2), (a3), 0, 0)
  68. #define event_notify_4(e, a1, a2, a3, a4) \
  69.     event_notify((e), (a1), (a2), (a3), (a4), 0)
  70. #define event_notify_5(e, a1, a2, a3, a4, a5) \
  71.     event_notify((e), (a1), (a2), (a3), (a4), (a5))
  72.  
  73. extern void event_notify(event_type_t, unative_t, unative_t, unative_t,
  74.     unative_t, unative_t);
  75.  
  76. #endif
  77.  
  78. /** @}
  79.  */
  80.