C++ 接口耗时测试demo
时间: 2024-11-13 11:15:02 浏览: 10
在C++中,如果你想要测量某个接口的耗时,你可以创建一个简单的示例程序,该程序会多次调用这个接口并记录每次调用的时间。这通常涉及到计时库(如`chrono`)、接口函数和循环。下面是一个简化的演示:
```cpp
#include <iostream>
#include <chrono> // 包含时间戳处理
// 假设我们有一个抽象接口
class ITest {
public:
virtual ~ITest() {}
virtual void doSomething() = 0; // 纯虚函数
};
// 实现A接口
class TestImplA : public ITest {
public:
void doSomething() override {
auto start = std::chrono::high_resolution_clock::now();
// 模拟接口的实际操作
for (int i = 0; i < 100000; ++i)
someHeavyTask(i);
auto end = std::chrono::high_resolution_clock::now();
auto duration = std::chrono::duration_cast<std::chrono::microseconds>(end - start);
std::cout << "doSomething() took: " << duration.count() << " microseconds" << std::endl;
}
private:
// 具体操作...
};
int main() {
ITest* test = new TestImplA(); // 创建接口实例
// 执行多次测试并计算平均值(为了更准确,可以增加次数)
int trials = 50;
long total_duration = 0;
for (int i = 0; i < trials; ++i) {
test->doSomething();
total_duration += std::chrono::duration_cast<std::chrono::microseconds>(
std::chrono::high_resolution_clock::now() - start_time).count();
}
double avg_time = static_cast<double>(total_duration) / trials;
std::cout << "Average time over " << trials << " runs: " << avg_time << " microseconds" << std::endl;
delete test; // 别忘了释放资源
return 0;
}
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