root / prex-0.9.0 / usr / sample / task / task.c @ 03e9c04a
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| 1 | 03e9c04a | Brad Neuman | /*
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| 2 | * Copyright (c) 2005-2006, Kohsuke Ohtani
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | * 1. Redistributions of source code must retain the above copyright
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| 9 | * notice, this list of conditions and the following disclaimer.
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer in the
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| 12 | * documentation and/or other materials provided with the distribution.
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| 13 | * 3. Neither the name of the author nor the names of any co-contributors
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| 14 | * may be used to endorse or promote products derived from this software
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| 15 | * without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 27 | * SUCH DAMAGE.
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| 28 | */
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| 29 | |||
| 30 | /*
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| 31 | * task.c - a sample program to run tasks.
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| 32 | */
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| 33 | |||
| 34 | #include <sys/prex.h> |
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| 35 | #include <stdio.h> |
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| 36 | #include <stdlib.h> |
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| 37 | |||
| 38 | #define NR_TASKS 10 |
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| 39 | |||
| 40 | /*
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| 41 | * Create new task
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| 42 | */
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| 43 | static task_t
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| 44 | task_run(void (*func)(void)) |
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| 45 | {
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| 46 | char *stack;
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| 47 | task_t task; |
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| 48 | thread_t t; |
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| 49 | |||
| 50 | stack = malloc(1024);
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| 51 | if (task_create(task_self(), VM_SHARE, &task) != 0) |
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| 52 | return 0; |
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| 53 | |||
| 54 | if (thread_create(task, &t) != 0) |
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| 55 | return 0; |
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| 56 | |||
| 57 | if (thread_load(t, func, stack + 1024) != 0) |
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| 58 | return 0; |
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| 59 | |||
| 60 | if (thread_resume(t) != 0) |
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| 61 | return 0; |
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| 62 | |||
| 63 | return task;
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| 64 | } |
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| 65 | |||
| 66 | /*
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| 67 | * Function to be called in new task.
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| 68 | */
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| 69 | static void |
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| 70 | hey_yo(void)
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| 71 | {
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| 72 | task_t self; |
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| 73 | |||
| 74 | /*
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| 75 | * Display string
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| 76 | */
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| 77 | self = task_self(); |
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| 78 | printf("Task %x: Hey, Yo!\n", (u_int)self);
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| 79 | |||
| 80 | /*
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| 81 | * Wait 5 sec
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| 82 | */
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| 83 | timer_sleep(5000, 0); |
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| 84 | |||
| 85 | /*
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| 86 | * Terminate current task.
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| 87 | */
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| 88 | printf("Task %x: Bye!\n", (u_int)self);
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| 89 | task_terminate(task_self()); |
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| 90 | } |
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| 91 | |||
| 92 | int
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| 93 | main(int argc, char *argv[]) |
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| 94 | {
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| 95 | int i;
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| 96 | |||
| 97 | printf("Task sample program\n");
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| 98 | |||
| 99 | /* Create new tasks */
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| 100 | for (i = 0; i < NR_TASKS; i++) { |
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| 101 | if (task_run(hey_yo) == 0) |
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| 102 | panic("failed to create task");
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| 103 | } |
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| 104 | |||
| 105 | /* Wait here... */
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| 106 | task_suspend(task_self()); |
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| 107 | return 0; |
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| 108 | } |