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/* vim:set ft=c ts=2 sw=2 sts=2 et cindent: */
/*
* Copyright 2013 Alan Antonuk
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "amqp_timer.h"
#if (defined(_WIN32) || defined(__WIN32__) || defined(WIN32))
# define AMQP_WIN_TIMER_API
#elif (defined(machintosh) || defined(__APPLE__) || defined(__APPLE_CC__))
# define AMQP_MAC_TIMER_API
#else
# define AMQP_POSIX_TIMER_API
#endif
#ifdef AMQP_WIN_TIMER_API
#define WIN32_LEAN_AND_MEAN
#include <Windows.h>
uint64_t
amqp_get_monotonic_timestamp(void)
{
static uint64_t NS_PER_COUNT = 0;
LARGE_INTEGER perf_count;
if (0 == NS_PER_COUNT) {
LARGE_INTEGER perf_frequency;
if (!QueryPerformanceFrequency(&perf_frequency)) {
return 0;
}
NS_PER_COUNT = AMQP_NS_PER_S / perf_frequency.QuadPart;
}
if (!QueryPerformanceCounter(&perf_count)) {
return 0;
}
return perf_count.QuadPart * NS_PER_COUNT;
}
#endif /* AMQP_WIN_TIMER_API */
#ifdef AMQP_MAC_TIMER_API
# include <mach/mach_time.h>
uint64_t
amqp_get_monotonic_timestamp(void)
{
static mach_timebase_info_data_t s_timebase = {0, 0};
uint64_t timestamp;
timestamp = mach_absolute_time();
if (s_timebase.denom == 0) {
mach_timebase_info(&s_timebase);
if (0 == s_timebase.denom) {
return 0;
}
}
timestamp = timestamp * s_timebase.numer / s_timebase.denom;
return timestamp;
}
#endif /* AMQP_MAC_TIMER_API */
#ifdef AMQP_POSIX_TIMER_API
#include <time.h>
uint64_t
amqp_get_monotonic_timestamp(void)
{
struct timespec tp;
if (-1 == clock_gettime(CLOCK_MONOTONIC, &tp)) {
return 0;
}
return ((uint64_t)tp.tv_sec * AMQP_NS_PER_S + (uint64_t)tp.tv_nsec);
}
#endif /* AMQP_POSIX_TIMER_API */
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