ctdemo.c

来自「基于嵌入式实时开发系统Tornado 2的工具使用内部培训资料」· C语言 代码 · 共 89 行

/* test_program.c - CodeTEST demo program */

/*
modification history
--------------------
01a,11jun98,bjl written.
*/

/*
DESCRIPTION
Sample program to demonstrate some capabilities
of CodeTEST, to be used in conjunction with
the 'Getting Started' chapter of the CodeTEST
for Tornado User's Guide.  
*/

/* includes */

#include "vxWorks.h"
#include "stdio.h"
#include "taskLib.h"
#include "sysLib.h"

/* globals */

int programcount;
char *buf1, *buf2;


/*******************************************************************************
*
* task1 - Allocates memory to the global buffers.
*
*/

void task1() {
   buf1 = (char*) malloc(programcount * 100);
   buf2 = (char*) malloc(programcount * 100);
}


/*******************************************************************************
*
* task2 - Frees memory from the global buffers.  The programmer 
*         "accidentally" frees buf1 again instead of freeing buf2.  
*
*/

void task2() {
   free (buf1);
   free (buf1);
}

/*******************************************************************************
*
* function_totest - Executes one of two branches depending on the value of 
*                   arg.  
*
*/
	     
void function_totest (int arg) {
   if (arg <= 100) {
      printf ("arg <= 100. arg = %d\n", arg);   
   } else {
      printf ("arg > 100. arg = %d\n", arg);   
   }
}

/*******************************************************************************
*
* test_program - Test function for CodeTEST demo.  First calls 
*          function_totest, then calls task1 and task2 in a loop.  The 
*          duration of the loop should be five minutes.  
*
*/

void test_program() {
    
    function_totest (100);

    for (programcount = 0; programcount < 60; programcount++) {
       taskSpawn("task1", 100, 0, 20000, (FUNCPTR) task1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
       taskSpawn("task2", 100, 0, 20000, (FUNCPTR) task2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);

       /* delay for five seconds */
       taskDelay(sysClkRateGet() * 5);
    }
}