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/* SPDX-License-Identifier: Apache-2.0
* Copyright 2011-2022 Blender Foundation */
#include "util/time.h"
#include <stdlib.h>
#if !defined(_WIN32)
# include <sys/time.h>
# include <unistd.h>
#endif
#include "util/math.h"
#include "util/string.h"
#include "util/windows.h"
CCL_NAMESPACE_BEGIN
#ifdef _WIN32
double time_dt()
{
__int64 frequency, counter;
QueryPerformanceFrequency((LARGE_INTEGER *)&frequency);
QueryPerformanceCounter((LARGE_INTEGER *)&counter);
return (double)counter / (double)frequency;
}
void time_sleep(double t)
{
Sleep((int)(t * 1000));
}
#else
double time_dt()
{
struct timeval now;
gettimeofday(&now, NULL);
return now.tv_sec + now.tv_usec * 1e-6;
}
/* sleep t seconds */
void time_sleep(double t)
{
/* get whole seconds */
int s = (int)t;
if (s >= 1) {
sleep(s);
/* adjust parameter to remove whole seconds */
t -= s;
}
/* get microseconds */
int us = (int)(t * 1e6);
if (us > 0)
usleep(us);
}
#endif
/* Time in format "hours:minutes:seconds.hundreds" */
string time_human_readable_from_seconds(const double seconds)
{
const int h = (((int)seconds) / (60 * 60));
const int m = (((int)seconds) / 60) % 60;
const int s = (((int)seconds) % 60);
const int r = (((int)(seconds * 100)) % 100);
if (h > 0) {
return string_printf("%.2d:%.2d:%.2d.%.2d", h, m, s, r);
}
else {
return string_printf("%.2d:%.2d.%.2d", m, s, r);
}
}
double time_human_readable_to_seconds(const string &time_string)
{
/* Those are multiplies of a corresponding token surrounded by : in the
* time string, which denotes how to convert value to seconds.
* Effectively: seconds, minutes, hours, days in seconds. */
const int multipliers[] = {1, 60, 60 * 60, 24 * 60 * 60};
const int num_multiplies = sizeof(multipliers) / sizeof(*multipliers);
if (time_string.empty()) {
return 0.0;
}
double result = 0.0;
/* Split fractions of a second from the encoded time. */
vector<string> fraction_tokens;
string_split(fraction_tokens, time_string, ".", false);
const int num_fraction_tokens = fraction_tokens.size();
if (num_fraction_tokens == 0) {
/* Time string is malformed. */
return 0.0;
}
else if (fraction_tokens.size() == 1) {
/* There is no fraction of a second specified, the rest of the code
* handles this normally. */
}
else if (fraction_tokens.size() == 2) {
result = atof(fraction_tokens[1].c_str());
result *= ::pow(0.1, fraction_tokens[1].length());
}
else {
/* This is not a valid string, the result can not be reliable. */
return 0.0;
}
/* Split hours, minutes and seconds.
* Hours part is optional. */
vector<string> tokens;
string_split(tokens, fraction_tokens[0], ":", false);
const int num_tokens = tokens.size();
if (num_tokens > num_multiplies) {
/* Can not reliably represent the value. */
return 0.0;
}
for (int i = 0; i < num_tokens; ++i) {
result += atoi(tokens[num_tokens - i - 1].c_str()) * multipliers[i];
}
return result;
}
CCL_NAMESPACE_END
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