55 lines
1.2 KiB
C++
55 lines
1.2 KiB
C++
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#include "timer.h"
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#include <stdlib.h>
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#include <time.h>
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struct timer_info {
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double total_time;
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struct timespec start_time;
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int is_running;
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};
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static struct timer_info *ti;
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void timer_init(int n) {
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ti = (struct timer_info*)malloc(n * sizeof(struct timer_info));
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for (int i = 0; i < n; ++i) {
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ti[i].total_time = 0;
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ti[i].is_running = 0;
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}
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}
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void timer_finalize() {
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free(ti);
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}
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void timer_start(int idx) {
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if (ti[idx].is_running == 0) {
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clock_gettime(CLOCK_MONOTONIC, &ti[idx].start_time);
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ti[idx].is_running = 1;
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}
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}
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static double diff_with_current_time(struct timespec t) {
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struct timespec end_time;
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clock_gettime(CLOCK_MONOTONIC, &end_time);
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long diff_nsec = (end_time.tv_sec - t.tv_sec) * 1000000000L + (end_time.tv_nsec - t.tv_nsec);
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return diff_nsec / 1e9;
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}
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void timer_stop(int idx) {
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if (ti[idx].is_running == 1) {
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ti[idx].total_time += diff_with_current_time(ti[idx].start_time);
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ti[idx].is_running = 0;
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}
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}
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double timer_read(int idx) {
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return ti[idx].total_time + (ti[idx].is_running ? diff_with_current_time(ti[idx].start_time) : 0);
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}
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void timer_reset(int idx) {
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ti[idx].total_time = 0;
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ti[idx].is_running = 0;
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}
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