diff options
author | Taybin Rutkin <taybin@taybin.com> | 2005-05-13 20:47:18 +0000 |
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committer | Taybin Rutkin <taybin@taybin.com> | 2005-05-13 20:47:18 +0000 |
commit | d09f6b3016bacbc2871a8946cbb24ad705076509 (patch) | |
tree | f27312839c2a772cb2ce068a4f28b2449ad869df /libs/glibmm2/glibmm/timeval.h |
Initial revision
git-svn-id: svn://localhost/trunk/ardour2@4 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/glibmm2/glibmm/timeval.h')
-rw-r--r-- | libs/glibmm2/glibmm/timeval.h | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/libs/glibmm2/glibmm/timeval.h b/libs/glibmm2/glibmm/timeval.h new file mode 100644 index 0000000000..f27952c238 --- /dev/null +++ b/libs/glibmm2/glibmm/timeval.h @@ -0,0 +1,233 @@ +// -*- c++ -*- +#ifndef _GLIBMM_TIMEVAL_H +#define _GLIBMM_TIMEVAL_H + +/* $Id$ */ + +/* timeval.h + * + * Copyright (C) 2002 The gtkmm Development Team + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <glib/gtypes.h> +#include <glib/gtimer.h> + +namespace Glib +{ + +/** Glib::TimeVal is a wrapper around the glib structure GTimeVal. + * The glib structure GTimeVal itself is equivalent to struct timeval, + * which is returned by the gettimeofday() UNIX call. Additionally + * this wrapper provides an assortment of time manipulation functions. + */ +struct TimeVal : public GTimeVal +{ + inline TimeVal(); + inline TimeVal(long seconds, long microseconds); + + inline TimeVal(const GTimeVal& gtimeval); + inline TimeVal& operator=(const GTimeVal& gtimeval); + + /** Assigns the current time to the TimeVal instance. + * Equivalent to the UNIX gettimeofday() function, but is portable and + * works also on Win32. + */ + void assign_current_time(); + + void add(const TimeVal& rhs); + void subtract(const TimeVal& rhs); + void add_seconds(long seconds); + void subtract_seconds(long seconds); + void add_milliseconds(long milliseconds); + void subtract_milliseconds(long milliseconds); + void add_microseconds(long microseconds); + void subtract_microseconds(long microseconds); + + inline TimeVal& operator+=(const TimeVal& gtimeval); + inline TimeVal& operator-=(const TimeVal& gtimeval); + inline TimeVal& operator+=(long seconds); + inline TimeVal& operator-=(long seconds); + + /** Returns a double representation of the time interval. + * This member function converts the time interval, that is + * internally stored as two long values for seconds and microseconds, + * to a double representation, whose unit is seconds. + */ + inline double as_double() const; + + inline bool negative() const; + + /** Checks whether the stored time interval is positive. + * Returns true if the stored time / time interval is positive. + */ + inline bool valid() const; +}; + +inline +TimeVal::TimeVal() +{ + tv_sec = 0; + tv_usec = 0; +} + +inline +TimeVal::TimeVal(long seconds, long microseconds) +{ + tv_sec = seconds; + tv_usec = microseconds; +} + +inline +TimeVal::TimeVal(const GTimeVal& gtimeval) +{ + tv_sec = gtimeval.tv_sec; + tv_usec = gtimeval.tv_usec; +} + +inline +TimeVal& TimeVal::operator=(const GTimeVal& gtimeval) +{ + tv_sec = gtimeval.tv_sec; + tv_usec = gtimeval.tv_usec; + return *this; +} + +inline +TimeVal& TimeVal::operator+=(const TimeVal& gtimeval) +{ + add(gtimeval); + + return *this; +} + +inline +TimeVal& TimeVal::operator-=(const TimeVal& gtimeval) +{ + subtract(gtimeval); + + return *this; +} + +inline +TimeVal& TimeVal::operator+=(long seconds) +{ + add_seconds(seconds); + + return *this; +} + +inline +TimeVal& TimeVal::operator-=(long seconds) +{ + subtract_seconds(seconds); + + return *this; +} + +inline +double TimeVal::as_double() const +{ + return tv_sec + ((double) tv_usec / (double) G_USEC_PER_SEC); +} + +inline +bool TimeVal::negative() const +{ + return (tv_sec < 0); +} + +inline +bool TimeVal::valid() const +{ + return (tv_usec >= 0 && tv_usec < G_USEC_PER_SEC); +} + +/** @relates Glib::TimeVal */ +inline +TimeVal operator+(const TimeVal& lhs, const TimeVal& rhs) +{ return TimeVal(lhs) += rhs; } + +/** @relates Glib::TimeVal */ +inline +TimeVal operator+(const TimeVal& lhs, long seconds) +{ return TimeVal(lhs) += seconds; } + +/** @relates Glib::TimeVal */ +inline +TimeVal operator-(const TimeVal& lhs, const TimeVal& rhs) +{ return TimeVal(lhs) -= rhs; } + +/** @relates Glib::TimeVal */ +inline +TimeVal operator-(const TimeVal& lhs, long seconds) +{ return TimeVal(lhs) -= seconds; } + + +/** @relates Glib::TimeVal */ +inline +bool operator==(const TimeVal& lhs, const TimeVal& rhs) +{ + return (lhs.tv_sec == rhs.tv_sec && lhs.tv_usec == rhs.tv_usec); +} + +/** @relates Glib::TimeVal */ +inline +bool operator!=(const TimeVal& lhs, const TimeVal& rhs) +{ + return (lhs.tv_sec != rhs.tv_sec || lhs.tv_usec != rhs.tv_usec); +} + +/** @relates Glib::TimeVal */ +inline +bool operator<(const TimeVal& lhs, const TimeVal& rhs) +{ + return ((lhs.tv_sec < rhs.tv_sec) || + (lhs.tv_sec == rhs.tv_sec && lhs.tv_usec < rhs.tv_usec)); +} + +/** @relates Glib::TimeVal */ +inline +bool operator>(const TimeVal& lhs, const TimeVal& rhs) +{ + return ((lhs.tv_sec > rhs.tv_sec) || + (lhs.tv_sec == rhs.tv_sec && lhs.tv_usec > rhs.tv_usec)); +} + +/** @relates Glib::TimeVal */ +inline +bool operator<=(const TimeVal& lhs, const TimeVal& rhs) +{ + return ((lhs.tv_sec < rhs.tv_sec) || + (lhs.tv_sec == rhs.tv_sec && lhs.tv_usec <= rhs.tv_usec)); +} + +/** @relates Glib::TimeVal */ +inline +bool operator>=(const TimeVal& lhs, const TimeVal& rhs) +{ + return ((lhs.tv_sec > rhs.tv_sec) || + (lhs.tv_sec == rhs.tv_sec && lhs.tv_usec >= rhs.tv_usec)); +} + +} // namespace Glib + + +#endif /* _GLIBMM_TIMEVAL_H */ + + + + |