timeval.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _TIMEVAL_H_
- #define _TIMEVAL_H_
- #include "hxtime.h"
- #define MILLISECOND 1000
- #define SECOND 1000000
- /*
- * Because of conflicts between the use of winsock.h and winsock2.h
- * we cannot derive the struct Timeval from struct timeval on WINDOWS
- * platforms
- */
- class Timeval: public HXTime {
- static void i2t(tv_sec_t& sec, tv_usec_t& usec,
- long32 s, long32 us);
- public:
- Timeval(){}
- Timeval(long32 sec, long32 usec);
- Timeval(long32 usec);
- #if __MWERKS__ && !defined(_CARBON)
- // I added this to make Timeval t = sendperiod compile
- Timeval(time_t sec);
- #endif
- #if !(defined _UNIX && (defined _LONG_IS_64 || defined _VXWORKS))
- Timeval(int sec, int usec);
- Timeval(int usec);
- #endif
- Timeval(float t);
- Timeval(double t);
- Timeval& operator +=(const int b);
- Timeval& operator -=(const int b);
- Timeval& operator +=(const Timeval& b);
- Timeval& operator -=(const Timeval& b);
-
- };
- #if __MWERKS__ && !defined(_CARBON)
- // I added this to make Timeval t = sendperiod compile
- inline Timeval::Timeval(time_t t) {
- tv_sec = (tv_sec_t)t;
- tv_usec = (tv_usec_t)0;
- }
- #endif
- inline Timeval::Timeval(float t) {
- tv_sec = (tv_sec_t)t;
- tv_usec = (tv_usec_t)((t-tv_sec)*SECOND);
- }
- inline Timeval::Timeval(double t) {
- tv_sec = (tv_sec_t)t;
- tv_usec = (tv_usec_t)((t-tv_sec)*SECOND);
- }
- inline void Timeval::i2t(tv_sec_t& sec, tv_usec_t& usec,
- long32 s, long32 us) {
- sec = s;
- if (us >= SECOND) {
- sec += us / SECOND;
- usec = us % SECOND;
- } else {
- usec = us;
- }
- }
- inline Timeval::Timeval(long32 s, long32 us) {
- Timeval::i2t((tv_sec_t&)tv_sec, (tv_usec_t&)tv_usec, s, us);
- }
- inline Timeval::Timeval(long32 us) {
- Timeval::i2t((tv_sec_t&)tv_sec, (tv_usec_t&)tv_usec, 0L, us);
- }
- #if !(defined _UNIX && (defined _LONG_IS_64 || defined _VXWORKS))
- inline Timeval::Timeval(int s, int us) {
- Timeval::i2t((tv_sec_t&)tv_sec, (tv_usec_t&)tv_usec, s, us);
- }
- inline Timeval::Timeval(int us) {
- Timeval::i2t((tv_sec_t&)tv_sec, (tv_usec_t&)tv_usec, 0L, us);
- }
- #endif
- inline Timeval& Timeval::operator +=(const int b) {
- tv_usec += b;
- if (tv_usec >= SECOND) {
- tv_sec += tv_usec / SECOND;
- tv_usec %= SECOND;
- }
- return *this;
- }
- inline Timeval& Timeval::operator -=(const int b) {
- tv_usec -= b;
- if (tv_usec < 0) {
- tv_sec += tv_usec / SECOND;
- tv_usec %= SECOND;
- if (tv_usec < 0) {
- tv_sec--;
- tv_usec += SECOND;
- }
- }
- return *this;
- }
- /*
- * The following functions don't always work for negative 'a' or 'b'
- */
- inline Timeval& Timeval::operator +=(const Timeval& b) {
- tv_sec += b.tv_sec;
- tv_usec += b.tv_usec;
- while (tv_usec >= SECOND) {
- tv_sec++;
- tv_usec -= SECOND;
- }
- return *this;
- }
- inline Timeval& Timeval::operator -=(const Timeval& b) {
- #ifdef __hpux
- // tv_sec is u_long on HPUX
- // HP just has to do everything different doesn't it? :-(
- if (tv_sec < b.tv_sec)
- {
- tv_sec = 0;
- tv_usec = 0;
- return *this;
- }
- if ((tv_sec == b.tv_sec) && (tv_usec < b.tv_usec))
- {
- tv_sec = 0;
- tv_usec = 0;
- return *this;
- }
- #endif
- tv_sec -= b.tv_sec;
- tv_usec -= b.tv_usec;
- while (tv_usec < 0) {
- tv_sec--;
- tv_usec += SECOND;
- }
- return *this;
- }
- inline Timeval operator +(const Timeval& a, const Timeval& b) {
- Timeval c;
- c.tv_sec = a.tv_sec + b.tv_sec;
- c.tv_usec = a.tv_usec + b.tv_usec;
- while (c.tv_usec >= SECOND) {
- c.tv_sec++;
- c.tv_usec -= SECOND;
- }
- return c;
- }
- inline Timeval operator -(const Timeval& a, const Timeval& b) {
- Timeval c;
- #ifdef __hpux
- // tv_sec is u_long on HPUX
- // HP just has to do everything different doesn't it? :-(
- if (a.tv_sec < b.tv_sec)
- return (Timeval(0,0));
- if ((a.tv_sec == b.tv_sec) && (a.tv_usec < b.tv_usec))
- return (Timeval(0,0));
- #endif
- c.tv_sec = a.tv_sec - b.tv_sec;
- c.tv_usec = a.tv_usec - b.tv_usec;
- while (c.tv_usec < 0) {
- c.tv_sec--;
- c.tv_usec += SECOND;
- }
- return c;
- }
- inline int operator ==(const Timeval& a, const Timeval& b) {
- return a.tv_usec == b.tv_usec && a.tv_sec == b.tv_sec;
- }
- inline int operator !=(const Timeval& a, const Timeval& b) {
- return a.tv_usec != b.tv_usec || a.tv_sec != b.tv_sec;
- }
- inline int operator <=(const Timeval& a, const Timeval& b) {
- return a.tv_sec < b.tv_sec ||
- (a.tv_sec == b.tv_sec && a.tv_usec <= b.tv_usec);
- }
- inline int operator >=(const Timeval& a, const Timeval& b) {
- return a.tv_sec > b.tv_sec ||
- (a.tv_sec == b.tv_sec && a.tv_usec >= b.tv_usec);
- }
- inline int operator <(const Timeval& a, const Timeval& b) {
- return a.tv_sec < b.tv_sec ||
- (a.tv_sec == b.tv_sec && a.tv_usec < b.tv_usec);
- }
- inline int operator >(const Timeval& a, const Timeval& b) {
- return a.tv_sec > b.tv_sec ||
- (a.tv_sec == b.tv_sec && a.tv_usec > b.tv_usec);
- }
- #endif/*_TIMEVAL_H_*/