femtolisp/llt/timefuncs.c

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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <assert.h>
#include <errno.h>
#include <limits.h>
#include <sys/stat.h>
#include <sys/types.h>
#ifdef WIN32
#include <malloc.h>
#include <sys/timeb.h>
#include <windows.h>
#else
#include <sys/time.h>
#include <sys/poll.h>
#include <unistd.h>
#endif
#include "dtypes.h"
#include "timefuncs.h"
#ifdef WIN32
/*
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double tvals2float(struct tm *t, struct timeb *tstruct)
{
return (double)t->tm_hour * 3600 + (double)t->tm_min * 60 +
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(double)t->tm_sec + (double)tstruct->millitm/1.0e3;
}
*/
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double floattime()
{
struct timeb tstruct;
ftime(&tstruct);
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return (double)tstruct.time + (double)tstruct.millitm/1.0e3;
}
#else
double tv2float(struct timeval *tv)
{
return (double)tv->tv_sec + (double)tv->tv_usec/1.0e6;
}
double diff_time(struct timeval *tv1, struct timeval *tv2)
{
return tv2float(tv1) - tv2float(tv2);
}
#endif
// return as many bits of system randomness as we can get our hands on
u_int64_t i64time()
{
u_int64_t a;
#ifdef WIN32
struct timeb tstruct;
ftime(&tstruct);
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a = (((u_int64_t)tstruct.time)<<32) + (u_int64_t)tstruct.millitm;
#else
struct timeval now;
gettimeofday(&now, NULL);
a = (((u_int64_t)now.tv_sec)<<32) + (u_int64_t)now.tv_usec;
#endif
return a;
}
double clock_now()
{
#ifdef WIN32
return floattime();
#else
struct timeval now;
gettimeofday(&now, NULL);
return tv2float(&now);
#endif
}
void timestring(double seconds, char *buffer, size_t len)
{
time_t tme = (time_t)seconds;
char *fmt = "%c"; /* needed to suppress GCC warning */
#ifdef LINUX
struct tm tm;
localtime_r(&tme, &tm);
strftime(buffer, len, fmt, &tm);
#else
static char *wdaystr[] = {"Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
static char *monthstr[] = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug",
"Sep","Oct","Nov","Dec"};
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struct tm *tm;
int hr;
tm = localtime(&tme);
hr = tm->tm_hour;
if (hr > 12) hr -= 12;
if (hr == 0) hr = 12;
snprintf(buffer, len, "%s %02d %s %d %02d:%02d:%02d %s %s",
wdaystr[tm->tm_wday], tm->tm_mday, monthstr[tm->tm_mon],
tm->tm_year+1900, hr, tm->tm_min, tm->tm_sec,
tm->tm_hour>11 ? "PM" : "AM", "");
#endif
}
#ifdef LINUX
extern char *strptime(const char *s, const char *format, struct tm *tm);
double parsetime(char *str)
{
char *fmt = "%c"; /* needed to suppress GCC warning */
char *res;
time_t t;
struct tm tm;
res = strptime(str, fmt, &tm);
if (res != NULL) {
t = mktime(&tm);
if (t == ((time_t)-1))
return -1;
return (double)t;
}
return -1;
}
#else
// TODO
#endif
void sleep_ms(int ms)
{
if (ms == 0)
return;
#ifdef WIN32
Sleep(ms);
#else
struct timeval timeout;
timeout.tv_sec = ms/1000;
timeout.tv_usec = (ms % 1000) * 1000;
select(0, NULL, NULL, NULL, &timeout);
#endif
}
void timeparts(int32_t *buf, double t)
{
time_t tme = (time_t)t;
#ifndef WIN32
struct tm tm;
localtime_r(&tme, &tm);
tm.tm_year += 1900;
memcpy(buf, (char*)&tm, sizeof(struct tm));
#else
struct tm *tm;
tm = localtime(&tme);
tm->tm_year += 1900;
memcpy(buf, (char*)tm, sizeof(struct tm));
#endif
}