time.c

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#include <jwsc/config.h>

#include <stdlib.h>
#include <stdio.h>
#include <inttypes.h>
#include <unistd.h>
#include <sys/times.h>

#include "jwsc/base/time.h"


void start_timer(Timer* t)
{
    times(&(t->time));
}


void stop_timer(Timer* t)
{
    struct tms now;

    times(&now);

    t->time.tms_utime  = now.tms_utime  - t->time.tms_utime;
    t->time.tms_stime  = now.tms_stime  - t->time.tms_stime;
    t->time.tms_cutime = now.tms_cutime - t->time.tms_cutime;
    t->time.tms_cstime = now.tms_cstime - t->time.tms_cstime;
}


void add_time_to_timer(Timer* t_1, const Timer* t_2)
{
    t_1->time.tms_utime  += t_2->time.tms_utime;
    t_1->time.tms_stime  += t_2->time.tms_stime;
    t_1->time.tms_cutime += t_2->time.tms_cutime;
    t_1->time.tms_cstime += t_2->time.tms_cstime;
}


void zero_timer(Timer* t)
{
    t->time.tms_utime  = 0;
    t->time.tms_stime  = 0;
    t->time.tms_cutime = 0;
    t->time.tms_cstime = 0;
}


double user_time_s(const Timer* t)
{
    return (double)t->time.tms_utime / (double)sysconf(_SC_CLK_TCK);
}


double user_time_ms(const Timer* t)
{
    return (double)(1000 * t->time.tms_utime) / 
           (double)sysconf(_SC_CLK_TCK);
}

double sys_time_s(const Timer* t)
{
    return (double)t->time.tms_stime / (double)sysconf(_SC_CLK_TCK);
}


double sys_time_ms(const Timer* t)
{
    return (double)(1000 * t->time.tms_stime) / 
           (double)sysconf(_SC_CLK_TCK);
}

double proc_user_time_s()
{
    struct tms now;

    times(&now);

    return (double)now.tms_utime / (double)sysconf(_SC_CLK_TCK);
}


double proc_user_time_ms()
{
    struct tms now;

    times(&now);

    return (double)(1000 * now.tms_utime) / (double)sysconf(_SC_CLK_TCK);
}

double proc_sys_time_s()
{
    struct tms now;

    times(&now);

    return (double)now.tms_stime / (double)sysconf(_SC_CLK_TCK);
}


double proc_sys_time_ms()
{
    struct tms now;

    times(&now);

    return (double)(1000 * now.tms_stime) / (double)sysconf(_SC_CLK_TCK);
}