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  1. /*
  2.  * Copyright (c) 2007 Jan Hudecek
  3.  * Copyright (c) 2008 Martin Decky
  4.  * All rights reserved.
  5.  *
  6.  * Redistribution and use in source and binary forms, with or without
  7.  * modification, are permitted provided that the following conditions
  8.  * are met:
  9.  *
  10.  * - Redistributions of source code must retain the above copyright
  11.  *   notice, this list of conditions and the following disclaimer.
  12.  * - Redistributions in binary form must reproduce the above copyright
  13.  *   notice, this list of conditions and the following disclaimer in the
  14.  *   documentation and/or other materials provided with the distribution.
  15.  * - The name of the author may not be used to endorse or promote products
  16.  *   derived from this software without specific prior written permission.
  17.  *
  18.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28.  */
  29.  
  30. /** @addtogroup genericproc
  31.  * @{
  32.  */
  33. /** @file tasklet.h
  34.  * @brief Tasklets declarations
  35.  */
  36.  
  37. #ifndef KERN_TASKLET_H_
  38. #define KERN_TASKLET_H_
  39.  
  40. #include <adt/list.h>
  41.  
  42. /** Tasklet callback type */
  43. typedef void (* tasklet_callback_t)(void *arg);
  44.  
  45. /** Tasklet state */
  46. typedef enum {
  47.     NotActive,
  48.     Scheduled,
  49.     InProgress,
  50.     Disabled
  51. } tasklet_state_t;
  52.  
  53. /** Structure describing a tasklet */
  54. typedef struct tasklet_descriptor {
  55.     link_t link;
  56.    
  57.     /** Callback to call */
  58.     tasklet_callback_t callback;
  59.    
  60.     /** Argument passed to the callback */
  61.     void *arg;
  62.    
  63.     /** State of the tasklet */
  64.     tasklet_state_t state;
  65. } tasklet_descriptor_t;
  66.  
  67.  
  68. extern void tasklet_init(void);
  69.  
  70. #endif
  71.  
  72. /** @}
  73.  */
  74.