timeval_md.h

《移动Agent技术》一书的所有章节源代码。

/*
 * @(#)timeval_md.h	1.6 96/11/23
 *
 * Copyright (c) 1995, 1996 Sun Microsystems, Inc. All Rights Reserved.
 *
 * This software is the confidential and proprietary information of Sun
 * Microsystems, Inc. ("Confidential Information").  You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 * with Sun.
 *
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
 * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
 * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
 * THIS SOFTWARE OR ITS DERIVATIVES.
 *
 * CopyrightVersion 1.1_beta
 *
 */

#ifndef	_WIN32_TIMEVAL_H_
#define	_WIN32_TIMEVAL_H_

typedef struct {
	long tv_sec;
	long tv_usec;
} timeval_t;

/*
 * Operations on timevals.
 *
 * NB: timercmp does not work for >=, <= or ==.
 */
#define timerisset(tvp)         ((tvp)->tv_sec || (tvp)->tv_usec)
#ifndef IBM_OS2								/*ibm*/
#define timercmp(tvp, uvp, cmp) \
        ((tvp)->tv_sec cmp (uvp)->tv_sec || \
         (tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec cmp (uvp)->tv_usec)
#endif									/*ibm*/
#define timereq(tvp, uvp) \
         ((tvp)->tv_sec == (uvp)->tv_sec && (tvp)->tv_usec == (uvp)->tv_usec)
#define timerclear(tvp)         (tvp)->tv_sec = (tvp)->tv_usec = 0

void timeradd(timeval_t*, timeval_t*);
void timersub(timeval_t*, timeval_t*);

#endif /* !_WIN32_TIMEVAL_H_ */