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/**
* Copyright (c) 2020, Timothy Stack
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Timothy Stack nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef lnav_time_util_hh
#define lnav_time_util_hh
#include <inttypes.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <time.h>
#include "config.h"
namespace lnav {
using time64_t = uint64_t;
ssize_t strftime_rfc3339(char* buffer,
size_t buffer_size,
lnav::time64_t tim,
int millis,
char sep = ' ');
} // namespace lnav
struct tm* secs2tm(lnav::time64_t tim, struct tm* res);
/**
* Convert the time stored in a 'tm' struct into epoch time.
*
* @param t The 'tm' structure to convert to epoch time.
* @return The given time in seconds since the epoch.
*/
time_t tm2sec(const struct tm* t);
void secs2wday(const struct timeval& tv, struct tm* res);
inline time_t
convert_log_time_to_local(time_t value)
{
struct tm tm;
localtime_r(&value, &tm);
#ifdef HAVE_STRUCT_TM_TM_ZONE
tm.tm_zone = NULL;
#endif
tm.tm_isdst = 0;
return tm2sec(&tm);
}
constexpr lnav::time64_t MAX_TIME_T = 4000000000LL;
enum exttm_bits_t {
ETB_YEAR_SET,
ETB_MONTH_SET,
ETB_DAY_SET,
ETB_HOUR_SET,
ETB_MINUTE_SET,
ETB_SECOND_SET,
ETB_MACHINE_ORIENTED,
ETB_EPOCH_TIME,
ETB_MILLIS_SET,
ETB_MICROS_SET,
ETB_NANOS_SET,
};
enum exttm_flags_t {
ETF_YEAR_SET = (1UL << ETB_YEAR_SET),
ETF_MONTH_SET = (1UL << ETB_MONTH_SET),
ETF_DAY_SET = (1UL << ETB_DAY_SET),
ETF_HOUR_SET = (1UL << ETB_HOUR_SET),
ETF_MINUTE_SET = (1UL << ETB_MINUTE_SET),
ETF_SECOND_SET = (1UL << ETB_SECOND_SET),
ETF_MACHINE_ORIENTED = (1UL << ETB_MACHINE_ORIENTED),
ETF_EPOCH_TIME = (1UL << ETB_EPOCH_TIME),
ETF_MILLIS_SET = (1UL << ETB_MILLIS_SET),
ETF_MICROS_SET = (1UL << ETB_MICROS_SET),
ETF_NANOS_SET = (1UL << ETB_NANOS_SET),
};
struct exttm {
struct tm et_tm {};
int32_t et_nsec{0};
unsigned int et_flags{0};
long et_gmtoff{0};
exttm() { memset(&this->et_tm, 0, sizeof(this->et_tm)); }
bool operator==(const exttm& other) const
{
return memcmp(this, &other, sizeof(exttm)) == 0;
}
struct timeval to_timeval() const;
};
inline bool
operator<(const struct timeval& left, time_t right)
{
return left.tv_sec < right;
}
inline bool
operator<(time_t left, const struct timeval& right)
{
return left < right.tv_sec;
}
inline bool
operator<(const struct timeval& left, const struct timeval& right)
{
return left.tv_sec < right.tv_sec
|| ((left.tv_sec == right.tv_sec) && (left.tv_usec < right.tv_usec));
}
inline bool
operator!=(const struct timeval& left, const struct timeval& right)
{
return left.tv_sec != right.tv_sec || left.tv_usec != right.tv_usec;
}
inline bool
operator==(const struct timeval& left, const struct timeval& right)
{
return left.tv_sec == right.tv_sec || left.tv_usec == right.tv_usec;
}
inline struct timeval
operator-(const struct timeval& lhs, const struct timeval& rhs)
{
struct timeval diff;
timersub(&lhs, &rhs, &diff);
return diff;
}
typedef int64_t mstime_t;
inline mstime_t
getmstime()
{
struct timeval tv;
gettimeofday(&tv, nullptr);
return tv.tv_sec * 1000ULL + tv.tv_usec / 1000ULL;
}
inline struct timeval
current_timeval()
{
struct timeval retval;
gettimeofday(&retval, nullptr);
return retval;
}
inline struct timespec
current_timespec()
{
struct timespec retval;
clock_gettime(CLOCK_REALTIME, &retval);
return retval;
}
inline time_t
day_num(time_t ti)
{
return ti / (24 * 60 * 60);
}
inline time_t
hour_num(time_t ti)
{
return ti / (60 * 60);
}
#endif
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