main.c

运行于T-Engine(使用T-Kernel操作系统)的实例源码

/*
 * main.c - an entry point of the sample application
 *
 * Copyright (C) YRP Ubiquitous Networking Laboratory, 2005.
 */

#include <basic.h>
#include <tk/tkernel.h>
#include "sample1.h"

/*
 * main routine
 */
EXPORT INT main(INT ac, UB *av[])
{
  T_CTSK ctsk;          /* information for creating a task */
  T_RTSK rtsk;          /* task information */
  static ID tskid = -1; /* task ID */

  if (ac < 0) {         /* in case of 'unlspg' command */
    if (tskid >= 0) {
      tet_exit();
      /* wait until the child task exited */
      while (tk_ref_tsk(tskid, &rtsk) >= E_OK) {
        tk_dly_tsk(1);
      }
    }
    return 0;
  }

  /* creating a task */
  ctsk.exinf   = NULL;                  /* extra information */
  ctsk.tskatr  = TA_HLNG | TA_RNG0;     /* task attributes */
  ctsk.task    = tet_task;              /* start address of the task */
  ctsk.itskpri = TET_TASK_PRI;          /* task priority when starting */
  ctsk.stksz   = 1024 * 4;              /* stack size */

  tskid = tk_cre_tsk(&ctsk);            /* create a task */
  if (tskid < E_OK) { goto EXIT; }      /* failed in creating a task */

  /* starting the task */
  tk_sta_tsk(tskid, tk_get_tid());      /* start a task */

  /* sleep until the child wakes up this task */
  tk_slp_tsk(TMO_FEVR);

EXIT:
  return 0;
}