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/*
* BRLTTY - A background process providing access to the console screen (when in
* text mode) for a blind person using a refreshable braille display.
*
* Copyright (C) 1995-2014 by The BRLTTY Developers.
*
* BRLTTY comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed under the terms of the
* GNU General Public License, as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any
* later version. Please see the file LICENSE-GPL for details.
*
* Web Page: http://mielke.cc/brltty/
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#ifndef BRLTTY_INCLUDED_TIMING
#define BRLTTY_INCLUDED_TIMING
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define MSECS_PER_SEC 1000
#define USECS_PER_MSEC 1000
#define NSECS_PER_USEC 1000
#define USECS_PER_SEC (USECS_PER_MSEC * MSECS_PER_SEC)
#define NSECS_PER_MSEC (NSECS_PER_USEC * USECS_PER_MSEC)
#define NSECS_PER_SEC (NSECS_PER_USEC * USECS_PER_MSEC * MSECS_PER_SEC)
#define SECS_PER_MIN 60
#define MINS_PER_HR 60
#define HRS_PER_DAY 24
#define DAYS_PER_WK 7
#define SECS_PER_HR (SECS_PER_MIN * MINS_PER_HR)
#define SECS_PER_DAY (SECS_PER_MIN * MINS_PER_HR * HRS_PER_DAY)
#define SECS_PER_WK (SECS_PER_MIN * MINS_PER_HR * HRS_PER_DAY * DAYS_PER_WK)
#define MINS_PER_DAY (MINS_PER_HR * HRS_PER_DAY)
#define MINS_PER_WK (MINS_PER_HR * HRS_PER_DAY * DAYS_PER_WK)
#define HRS_PER_WK (HRS_PER_DAY * DAYS_PER_WK)
typedef struct {
int32_t seconds;
int32_t nanoseconds;
} TimeValue;
typedef struct {
uint16_t year;
uint8_t month;
uint8_t day;
uint8_t hour;
uint8_t minute;
uint8_t second;
int32_t nanosecond;
} TimeComponents;
#define PRIsec PRIi32
#define PRInsec PRIi32
extern void getCurrentTime (TimeValue *time);
extern void makeTimeValue (TimeValue *value, const TimeComponents *components);
extern void expandTimeValue (const TimeValue *value, TimeComponents *components);
extern size_t formatSeconds (char *buffer, size_t size, const char *format, int32_t seconds);
extern void normalizeTimeValue (TimeValue *time);
extern void adjustTimeValue (TimeValue *time, int milliseconds);
extern int compareTimeValues (const TimeValue *first, const TimeValue *second);
extern long int millisecondsBetween (const TimeValue *from, const TimeValue *to);
extern long int millisecondsTillNextSecond (const TimeValue *reference);
extern long int millisecondsTillNextMinute (const TimeValue *reference);
extern void getMonotonicTime (TimeValue *now);
extern long int getMonotonicElapsed (const TimeValue *start);
typedef struct {
TimeValue start;
long int length;
} TimePeriod;
extern void startTimePeriod (TimePeriod *period, long int length);
extern void restartTimePeriod (TimePeriod *period);
extern int afterTimePeriod (const TimePeriod *period, long int *elapsed);
extern void approximateDelay (int milliseconds); /* sleep for `msec' milliseconds */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* BRLTTY_INCLUDED_TIMING */
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