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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2005-2009. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "sys.h"
#include "global.h"
/******************* Routines for time measurement *********************/
int erts_ticks_per_sec = 0; /* Will be SYS_CLK_TCK in erl_unix_sys.h */
int sys_init_time(void)
{
return SYS_CLOCK_RESOLUTION;
}
clock_t sys_times(SysTimes *now) {
now->tms_utime = now->tms_stime = now->tms_cutime = now->tms_cstime = 0;
return 0;
}
static OSTICK last_tick_count = 0;
static SysHrTime wrap = 0;
static OSTICK us_per_tick;
void sys_init_hrtime() {
us_per_tick = system_tick();
}
SysHrTime sys_gethrtime() {
OSTICK ticks = get_ticks();
if (ticks < (SysHrTime) last_tick_count) {
wrap += 1ULL << 32;
}
last_tick_count = ticks;
return ((((SysHrTime) ticks) + wrap) * 1000*us_per_tick);
}
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