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/*
Title: Header for time functions
Copyright (c) 2000
Cambridge University Technical Services Limited
Further development Copyright David C.J. Matthews 2011-12.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _TIMING_H_DEFINED
#define _TIMING_H_DEFINED 1
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#ifdef HAVE_SYS_TIMES_H
#include <sys/times.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
class SaveVecEntry;
typedef SaveVecEntry *Handle;
class TaskData;
/* time functions etc */
extern Handle timing_dispatch_c(TaskData *taskData, Handle args, Handle code);
// Define classes for operations on time values in Windows and Posix.
// N.B. In Cygwin we use both classes because in some cases we need
// Windows-style timing and in other places we use Unix-style.
#ifdef HAVE_WINDOWS_H
class FileTimeTime {
public:
FileTimeTime() { t.dwLowDateTime = t.dwHighDateTime = 0; }
FileTimeTime(const FILETIME f) { t = f; }
void fromSeconds(unsigned u);
void add(const FileTimeTime &);
void sub(const FileTimeTime &);
float toSeconds(void);
operator FILETIME() const { return t; }
protected:
FILETIME t;
};
#endif
#ifdef HAVE_SYS_TIME_H
class TimeValTime {
public:
TimeValTime() { t.tv_sec = 0; t.tv_usec = 0; }
TimeValTime(const timeval f) { t = f; }
void fromSeconds(unsigned u) { t.tv_sec = u; t.tv_usec = 0; }
void add(const TimeValTime &);
void sub(const TimeValTime &);
float toSeconds(void) { return (float)t.tv_sec + (float)t.tv_usec / 1.0E6; }
operator timeval() const { return t; }
protected:
struct timeval t;
};
#endif
#if (defined(_WIN32) && ! defined(__CYGWIN__)) /* Native windows */
#define TIMEDATA FileTimeTime
#else /* Unix and Cygwin. */
#define TIMEDATA TimeValTime
#endif
#ifdef HAVE_WINDOWS_H
extern void addFiletimes(FILETIME *result, const FILETIME *x);
extern void subFiletimes(FILETIME *result, const FILETIME *x);
extern float filetimeToSeconds(const FILETIME *x);
#endif
#ifdef HAVE_SYS_TIME_H
extern void addTimevals(struct timeval *result, const struct timeval *x);
extern void subTimevals(struct timeval *result, const struct timeval *x);
extern float timevalToSeconds(const struct timeval *x);
#endif
extern time_t getBuildTime(void);
#endif
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