/* 
     Description: 用来统计程序段执行的时间，测试用

     Copyright : All right reserved by ICT

     Author : Zhang Zhonghai
     Date : 2019/01/30
*/

#include "timer.h"

#include <stdlib.h>
#include <sys/time.h>
#include <time.h>
#include <stdio.h>

/*
 * class Timer implementation
 */
double Timer::mseconds_elapsed() {
    return (get_mseconds() -start_);
}

double Timer::seconds_elapsed() {
    return (mseconds_elapsed() / 1000);
} 

void Timer::reinit() {
    start_ = get_mseconds();
}

void Timer::reinit_acc() {
    acc_count_ = 0.0;
}

void Timer::acc_start() {
    acc_start_ = get_mseconds();
}

void Timer::acc_end() {
    acc_count_ += get_mseconds() - acc_start_;
}

double Timer::acc_mseconds_elapsed() {
    return acc_count_;
}

double Timer::acc_seconds_elapsed() {
    return acc_count_ / 1000;
}

void Timer::log_time(const char *desc) {
    printf("[%s] ", desc);
    print_current_time();
}

void Timer::print_current_time() {
    time_t time_val;
    struct tm *at;
    char now[80];
    time(&time_val);
    at = localtime(&time_val);
    strftime(now, 79, "%Y-%m-%d %H:%M:%S", at);
    puts(now);
}

string Timer::get_current_time_str() {
    time_t time_val;
    struct tm *at;
    char now[80];
    time(&time_val);
    at = localtime(&time_val);
    strftime(now, 79, "%B %d, %Y at %I:%M:%S %p %Z", at);
    return string(now);
}

double Timer::get_mseconds() {
    struct timeval tv;
    gettimeofday(&tv, NULL);
    return (double) 1000 * (tv.tv_sec + ((1e-6) * tv.tv_usec));
}

double Timer::get_seconds() {
    return 1000 * get_mseconds();
}


/********** end of Timer implementation *************/