Rev 2309 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2296 | hudecek | 1 | /* |
| 2 | * Copyright (c) 2007 Jan Hudecek |
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| 3 | * Copyright (c) 2006 Jakub Jermar |
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| 4 | * All rights reserved. |
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| 5 | * |
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| 6 | * Redistribution and use in source and binary forms, with or without |
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| 7 | * modification, are permitted provided that the following conditions |
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| 8 | * are met: |
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| 9 | * |
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| 10 | * - Redistributions of source code must retain the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer. |
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| 12 | * - Redistributions in binary form must reproduce the above copyright |
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| 13 | * notice, this list of conditions and the following disclaimer in the |
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| 14 | * documentation and/or other materials provided with the distribution. |
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| 15 | * - The name of the author may not be used to endorse or promote products |
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| 16 | * derived from this software without specific prior written permission. |
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| 17 | * |
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 28 | */ |
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| 29 | |||
| 30 | /** @addtogroup genericddi |
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| 31 | * @{ |
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| 32 | */ |
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| 2430 | hudecek | 33 | /** @file tasklet.h |
| 34 | * @brief Tasklets declarations |
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| 2296 | hudecek | 35 | */ |
| 36 | |||
| 37 | #ifndef KERN_TASKLET_H_ |
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| 38 | #define KERN_TASKLET_H_ |
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| 39 | |||
| 40 | #include <arch/types.h> |
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| 41 | #include <proc/task.h> |
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| 42 | |||
| 43 | |||
| 44 | |||
| 45 | /** Structure describing a tasklet*/ |
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| 46 | typedef struct tasklet_descriptor { |
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| 47 | /** callback to call */ |
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| 48 | void (*func)(void* data); |
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| 49 | /** parameters to pass to func */ |
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| 50 | void* data; |
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| 51 | /** state of the tasklet one of tasklet_state_enum */ |
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| 52 | uint32_t state; |
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| 53 | struct tasklet_descriptor *next; |
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| 54 | } tasklet_descriptor_t; |
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| 55 | |||
| 56 | /** Initializes tasklets - except for the tasklet thread */ |
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| 57 | void tasklet_init(void); |
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| 58 | |||
| 59 | /** |
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| 60 | * Creates and runs the tasklet thread |
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| 61 | * |
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| 62 | * @param kernel_task Pointer to the kernel task - for create_thread |
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| 63 | */ |
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| 64 | void tasklet_run_tasklet_thread(task_t * kernel_task); |
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| 65 | |||
| 66 | /** Thread which keeps executing scheduled enabled tasklets |
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| 67 | * @param data not used |
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| 68 | */ |
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| 69 | void tasklet_thread(void* data); |
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| 70 | |||
| 71 | |||
| 72 | /** Executes scheduled enabled tasklets */ |
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| 73 | void tasklet_do(void); |
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| 74 | |||
| 75 | /** Initializes tasklet structure |
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| 76 | * @param func tasklet callback function to be called |
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| 77 | * @param data pointer to be passed to the tasklet function |
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| 78 | */ |
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| 79 | tasklet_descriptor_t* tasklet_register(void (*func)(void* data), void* data); |
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| 80 | |||
| 81 | /** Schedules the tasklet for execution on current CPU |
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| 82 | * @param t tasklet to be scheduled |
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| 83 | */ |
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| 84 | void tasklet_schedule(tasklet_descriptor_t* t); |
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| 85 | |||
| 2309 | hudecek | 86 | |
| 87 | /** Schedules the tasklet for execution on id CPU |
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| 88 | * @param t tasklet to be scheduled |
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| 89 | * @param id CPU id on which the tasklet will be scheduled |
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| 90 | */ |
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| 91 | void tasklet_schedule_SMP(tasklet_descriptor_t* t, uint32_t id); |
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| 92 | |||
| 2296 | hudecek | 93 | /** Tasklet will not be run, even if scheduled |
| 94 | * @param t tasklet to be disabled |
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| 95 | */ |
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| 96 | void tasklet_disable(tasklet_descriptor_t* t); |
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| 97 | |||
| 98 | /** Tasklet will be run if scheduled |
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| 99 | * @param t tasklet to be enabled |
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| 100 | */ |
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| 101 | void tasklet_enable(tasklet_descriptor_t* t); |
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| 102 | |||
| 103 | /** Frees the tasklet structure when no longer needed. The function doesn't provide |
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| 104 | * any synchronization, the caller must be sure, the tasklet is not scheduled. |
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| 105 | * |
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| 106 | * @param tasklet to be freed |
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| 107 | */ |
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| 108 | void tasklet_free(tasklet_descriptor_t* t); |
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| 109 | |||
| 110 | |||
| 111 | #endif |
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| 112 | |||
| 113 | /** @} |
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| 114 | */ |