task_demo.c

用于TM1300/PNX1300系列DSP（主要用于视频处理）的动态下载程序源码。

/*
 * Copyright (c) 1995,2000 TriMedia Technologies Inc.      
 *
 * +------------------------------------------------------------------+
 * | This software is furnished under a license and may only be used  |
 * | and copied in accordance with the terms and conditions of  such  |
 * | a license and with the inclusion of this copyright notice. This  |
 * | software or any other copies of this software may not be provided|
 * | or otherwise made available to any other person.  The ownership  |
 * | and title of this software is not transferred.                   |
 * |                                                                  |
 * | The information in this software is subject  to change without   |
 * | any  prior notice and should not be construed as a commitment by |
 * | TriMedia Technologies Inc.                                       |
 * |                                                                  |
 * | this code and information is provided "as is" without any        |
 * | warranty of any kind, either expressed or implied, including but |
 * | not limited to the implied warranties of merchantability and/or  |
 * | fitness for any particular purpose.                              |
 * +------------------------------------------------------------------+
 *
 *  Module name              : task_demo.c    1.5
 *
 *  Last update              : 17:07:24 - 00/06/16
 *
 *  Description              :  Demo app which makes use of pSOS.
 *                              Note that all the allocated pSOS
 *                              resources have to be deallocated
 *                              before exiting.
 *
 */


#include "stdio.h"
#include "psos.h"



ULONG       sem_enter;
ULONG       sem_exit;



void
aaaa()
{
    int         err;

    printf("aaaaaaa\n");

    do {
        err = sm_v(sem_enter);
        err |= sm_p(sem_exit, SM_WAIT, 0);
        printf("TOKEN SENT\n");
    } while (!err);

    printf("bbbbbbb\n");

    t_delete(0L);
}


#define OTHER_TASK  "othr"

main(int argc, char **argv)
{
    int         i;

    ULONG       task;

    printf("Hello, world\n");

    t_create(OTHER_TASK, 234, 10000, 10000, 0, &task );

    sm_create("semp", 1, SM_PRIOR, &sem_enter);
    sm_create("semv", 1, SM_PRIOR, &sem_exit);

    sm_p(sem_exit, SM_WAIT, 0);
    sm_p(sem_enter, SM_WAIT, 0);

    t_start(task, T_PREEMPT | T_TSLICE | T_ASR | T_ISR, aaaa, 0);

    for (i = 1; i < 10; i++) {
        sm_p(sem_enter, SM_WAIT, 0);
        sm_v(sem_exit);
        printf("TOKEN RECEIVED\n");
    }

    sm_delete(sem_enter);
    sm_delete(sem_exit);

    while (t_ident(OTHER_TASK,0,&task) == 0) {
        tm_wkafter(1);
    }

    printf("Goodbye, world\n");

    return 308;
}