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libuv入门
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libuv入门
2017年4月19日
| 字数
912
|
Library
| 阅读 19
libuv 定时器timer 使用：
g++ -o sunquan main.cpp -luv 执行 ./sunquan
可以看到每隔1秒打印一次 count的值。
uv_timer_start(&timer, timer_cb, timeout, repeat); 其中timeout是首次触发等待的时间毫秒值，之后每隔repeat毫秒触发一次，如果repeat=0表示首次触发之后不再触发。
//main.cpp
#include <cstdlib>
#include <uv.h>
#include <assert.h>
#include <time.h>
#include <iostream>
using namespace std;
void timer_cb(uv_timer_t *handlei)
{
static int count=1;
cout<<"count=="<<count++<<endl;
}
int main()
{
int r;
uv_timer_t timer;
r = uv_timer_init(uv_default_loop(),&timer);
assert(r==0);
// 0
cout<<uv_is_active((uv_handle_t*) &timer)<<endl;
// 0
cout<< uv_is_closing((uv_handle_t*) &timer)<<endl;
cout<<"start "<<time(NULL)<<endl;
r = uv_timer_start(&timer, timer_cb, 5000, 1000);
r = uv_run(uv_default_loop(),UV_RUN_DEFAULT);
cout<<"r="<<r<<endl;
return 0;
}
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