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/*
* Copyright 2014 Vincent Sanders <vince@netsurf-browser.org>
*
* This file is part of libnsutils.
*
* Licensed under the MIT License,
* http://www.opensource.org/licenses/mit-license.php
*/
/**
* \file
* Time operation implementation
*/
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#if defined(_POSIX_TIMERS) && (_POSIX_TIMERS > 0) && (defined _POSIX_MONOTONIC_CLOCK)
#include <time.h>
#elif defined(__riscos)
#include <oslib/os.h>
#else
#include <sys/time.h>
#endif
#include "nsutils/time.h"
/* exported interface documented in nsutils/time.h */
nsuerror nsu_getmonotonic_ms(uint64_t *current_out)
{
uint64_t current;
static uint64_t prev = 0; /* previous time so we never go backwards */
#if defined(_POSIX_TIMERS) && (_POSIX_TIMERS > 0) && (defined _POSIX_MONOTONIC_CLOCK)
struct timespec tp;
clock_gettime(CLOCK_MONOTONIC, &tp);
current = (tp.tv_sec * 1000) + (tp.tv_nsec / 1000000);
#elif defined(__riscos)
os_t time;
time = os_read_monotonic_time();
current = time * 10;
#else
#warning "Using dodgy gettimeofday() fallback"
/** \todo Implement this properly! */
struct timeval tv;
gettimeofday(&tv, NULL);
current = (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
#endif
/* ensure time never goes backwards */
if (current > prev) {
*current_out = current;
prev = current;
} else {
/** \todo is 10ms really correct or can we calculate a delta going forwards? */
prev += 10;
*current_out = prev;
}
return NSUERROR_OK;
}
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