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///////////////////////////////////////////////////////////////////////////////
//
/// \file mytime.c
/// \brief Time handling functions
//
// Author: Lasse Collin
//
// This file has been put into the public domain.
// You can do whatever you want with this file.
//
///////////////////////////////////////////////////////////////////////////////
#include "private.h"
#if defined(HAVE_CLOCK_GETTIME) && defined(HAVE_CLOCK_MONOTONIC)
# include <time.h>
#else
# include <sys/time.h>
#endif
uint64_t opt_flush_timeout = 0;
static uint64_t start_time;
static uint64_t next_flush;
/// \brief Get the current time as milliseconds
///
/// It's relative to some point but not necessarily to the UNIX Epoch.
static uint64_t
mytime_now(void)
{
#if defined(HAVE_CLOCK_GETTIME) && defined(HAVE_CLOCK_MONOTONIC)
// If CLOCK_MONOTONIC was available at compile time but for some
// reason isn't at runtime, fallback to CLOCK_REALTIME which
// according to POSIX is mandatory for all implementations.
static clockid_t clk_id = CLOCK_MONOTONIC;
struct timespec tv;
while (clock_gettime(clk_id, &tv))
clk_id = CLOCK_REALTIME;
return (uint64_t)tv.tv_sec * 1000 + (uint64_t)(tv.tv_nsec / 1000000);
#else
struct timeval tv;
gettimeofday(&tv, NULL);
return (uint64_t)tv.tv_sec * 1000 + (uint64_t)(tv.tv_usec / 1000);
#endif
}
extern void
mytime_set_start_time(void)
{
start_time = mytime_now();
return;
}
extern uint64_t
mytime_get_elapsed(void)
{
return mytime_now() - start_time;
}
extern void
mytime_set_flush_time(void)
{
next_flush = mytime_now() + opt_flush_timeout;
return;
}
extern int
mytime_get_flush_timeout(void)
{
if (opt_flush_timeout == 0 || opt_mode != MODE_COMPRESS)
return -1;
const uint64_t now = mytime_now();
if (now >= next_flush)
return 0;
const uint64_t remaining = next_flush - now;
return remaining > INT_MAX ? INT_MAX : (int)remaining;
}
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