这两天在 研究回调函数就想实现简单的定时器，如下是鄙人的程序望指教。ios
#include
#include
using namespace std;app
#define MAXNUM 256函数
typedef void (*timerProcessFunc)(void*);spa
typedef struct
{
unsigned int id;
int timeout; //毫秒
}MyTimer;回调函数
static MyTimer timerList[MAXNUM] = {0};it
int initTimer(MyTimer* timer, int timeout)
{
if(!timer || timeout < 0) return false;
timer->timeout = timeout;
for(int i = 0; i < MAXNUM; i++)
{
if(timerList[i].id == 0)
{
timer->id = i;
timerList[i] = *timer;
return i;
}
}
return -1;
}io
void timerProcess(void* userPara) //回调函数
{
cout << "定时了" << *(double*)userPara << "毫秒" << endl;
}stream
void startTimer(int timerID, timerProcessFunc timerapp)
{
clock_t start,finish;
double totaltime;
start = clock();List
/**********计时开始*****************/
while(1)
{
finish = clock();
totaltime = (double)(finish-start);
if(totaltime >= timerList[timerID].timeout)
{
timerapp(&totaltime);
break;
}
}
/********************************/
} 定时器
void killTimer(int timerID)
{
timerList[timerID].id = 0;
timerList[timerID].timeout = 0;
}
int main()
{
MyTimer t;
int id;
if((id = initTimer(&t, 10000)) != -1)
startTimer(id, timerProcess);
return 0;
}
