testostaskpriset.c

RTOS -REWORKS ReWorks里一个有关任务的例子

#include "taskTest.h"

static unsigned32 task_id1,task_id2;
static unsigned32 old_pri;
static void entry7(
  void* argument
)
{
   	printf("task1 run ,test failed!\n");
   	OSTaskDelay(100000);
}

static void entry8(
  void* argument
)
{
    printf("in task2:task2 first run,test success.\n");
	OSTaskDelete(task_id1); 
	OSTaskDelete(task_id2); 
}

int testOSTaskPriSet()
{
    OS_STATUS status;

    
    printf("*** test of OSTaskPriSet ***\n");
    printf("create 2 tasks,the pri of task1 is 102, the pri of task2 is 103.\n");
   	status = OSTaskCreate("tsk1",102,STACK_MINIMUM_SIZE,OS_TIMESLICE|OS_PREEMPT,OS_DEFAULT,&task_id1); 
   	if(status != OS_OK)
  	{
		printf("OSTaskCreate error:[%s]\n",serrno(errno));
		return (-1);
	}
	
	status = OSTaskCreate("tsk2",103,STACK_MINIMUM_SIZE,OS_TIMESLICE|OS_PREEMPT,OS_DEFAULT,&task_id2); 
   	if(status != OS_OK)
  	{
		printf("OSTaskCreate error:[%s]\n",serrno(errno));
		return (-1);
	}
	
	printf("set the priority of task2 to 101,so the task2 will first run\n");
    OSTaskPriSet(task_id2,101,&old_pri);
    
	printf("start the two tasks.\n");
	status = OSTaskStart( task_id1, entry7, 0 );  
	if(status != OS_OK)
  	{
		printf("OSTaskStart error:[%s]\n",serrno(errno));
		return (-1);
	}

	status = OSTaskStart( task_id2, entry8, 0 ); 
   	if(status != OS_OK)
  	{
		printf("OSTaskStart error:[%s]\n",serrno(errno));
		return (-1);
	}

	OSTaskDelay(1000);

   	OSTaskDelete(task_id1); 
	OSTaskDelete(task_id2); 

   	printf("*** OSTaskPriSet test OK! ***\n");
	return 1;
}