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 | } |