btime.c

Netscape NSPR库源码

/* -*- Mode: C++; c-basic-offset: 4 -*- */
/* 
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 * 
 * 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.
 * 
 * The Original Code is the Netscape Portable Runtime (NSPR).
 * 
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are 
 * Copyright (C) 1998-2000 Netscape Communications Corporation.  All
 * Rights Reserved.
 * 
 * Contributor(s):
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL"), in which case the provisions of the GPL are applicable 
 * instead of those above.  If you wish to allow use of your 
 * version of this file only under the terms of the GPL and not to
 * allow others to use your version of this file under the MPL,
 * indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by
 * the GPL.  If you do not delete the provisions above, a recipient
 * may use your version of this file under either the MPL or the
 * GPL.
 */

#include "primpl.h"
#include <kernel/OS.h>

static bigtime_t start;

PRTime
_MD_now (void)
{
    return (PRTime)real_time_clock_usecs();
}

void
_MD_interval_init (void)
{
    /* grab the base interval time */
    start = real_time_clock_usecs();
}

PRIntervalTime
_MD_get_interval (void)
{
    return( (PRIntervalTime) real_time_clock_usecs() / 10 );

#if 0
    /* return the number of tens of microseconds that have elapsed since
       we were initialized */
    bigtime_t now = real_time_clock_usecs();
    now -= start;
    now /= 10;
    return (PRIntervalTime)now;
#endif
}

PRIntervalTime
_MD_interval_per_sec (void)
{
    return 100000L;
}