mart/ex03/ex03c1.c

   1 #include <stdio.h>
   2 #include <signal.h>
   3 #include <unistd.h>
   4 #include <sys/mman.h>
   5
   6 #include <native/task.h>
   7 #include <native/timer.h>
   8 #include <native/sem.h>
   9
  10 #include  <rtdk.h>
  11 RT_TASK demo_task;
  12 RT_SEM semGlobal;
  13
  14 void demo(void *arg)
  15 {
  16   rt_sem_p(&semGlobal, 0);
  17
  18   RT_TASK *curtask;
  19   RT_TASK_INFO curtaskinfo;
  20
  21   // inquire current task
  22   curtask=rt_task_self();
  23   rt_task_inquire(curtask,&curtaskinfo);
  24
  25   // print task name
  26   int num = * (int *)arg;
  27   rt_printf("Task name : %s \n", curtaskinfo.name);
  28
  29   rt_sem_v(&semGlobal);
  30 }
  31
  32 int main(int argc, char* argv[])
  33 {
  34   char  str[10] ;
  35   int i;
  36
  37   // Perform auto-init of rt_print buffers if the task doesn't do so
  38   rt_print_auto_init(1);
  39
  40   // Lock memory : avoid memory swapping for this program
  41   mlockall(MCL_CURRENT|MCL_FUTURE);
  42
  43   /* create semaphore */
  44   rt_sem_create(&semGlobal,"semaphore",0,S_PRIO);
  45
  46   rt_printf("start task\n");
  47
  48   for (i=0; i<5; i++)
  49   {
  50           /*
  51            * Arguments: &task,
  52            *            name,
  53            *            stack size (0=default),
  54            *            priority,
  55            *            mode (FPU, start suspended, ...)
  56            */
  57           sprintf(str,"hello-%d",i);
  58           rt_task_create(&demo_task, str, 0, 50+i, 0);
  59
  60           /*
  61            * Arguments: &task,
  62            *            task function,
  63            *            function argument
  64            */
  65           rt_task_start(&demo_task, &demo, &i);
  66   }
  67
  68   rt_sem_v(&semGlobal);
  69 }