diff options
Diffstat (limited to 'lib/qtime.h')
| -rw-r--r-- | lib/qtime.h | 103 |
1 files changed, 71 insertions, 32 deletions
diff --git a/lib/qtime.h b/lib/qtime.h index 3f089f53..35e1a51b 100644 --- a/lib/qtime.h +++ b/lib/qtime.h @@ -53,6 +53,12 @@ typedef int64_t qtime_t ; +typedef qtime_t qtime_real_t ; /* qtime_t value, realtime time-base */ +typedef qtime_t qtime_mono_t ; /* qtime_t value, monotonic time-base */ + +typedef qtime_t qtime_tod_t ; /* qtime_t value, timeofday time-base... */ + /* ...just in case != CLOCK_REALTIME ! */ + /* A qtime_t second 123456789 -- nano-seconds */ #define QTIME_SECOND 1000000000 #define TIMESPEC_SECOND 1000000000 @@ -91,29 +97,38 @@ qtime2timeval(struct timeval* p_tv, qtime_t qt) ; * a manufactured equivalent using times() -- see qt_craft_monotonic(). */ -Inline qtime_t +Inline qtime_real_t qt_get_realtime(void) ; /* clock_gettime(CLOCK_REALTIME, ...) */ -Inline qtime_t +Inline qtime_mono_t +qt_add_realtime(qtime_t interval) ; /* qt_get_realtime() + interval */ + +Inline qtime_mono_t qt_get_monotonic(void) ; /* clock_gettime(CLOCK_MONOTONIC, ...) */ /* OR equivalent using times() */ +Inline qtime_mono_t +qt_add_monotonic(qtime_t interval) ; /* qt_get_monotonic() + interval */ -Inline qtime_t /* monotonic time from CLOCK_REALTIME */ -qt_realtime2monotonic(qtime_t realtime) ; -Inline qtime_t /* CLOCK_REALTIME from monotonic time */ -qt_monotonic2realtime(qtime_t monotonic) ; +Inline qtime_mono_t /* monotonic time from CLOCK_REALTIME */ +qt_realtime2monotonic(qtime_real_t realtime) ; +Inline qtime_real_t /* CLOCK_REALTIME from monotonic time */ +qt_monotonic2realtime(qtime_mono_t monotonic) ; /* Function to manufacture a monotonic clock. */ -extern qtime_t qt_craft_monotonic(void) ; +extern qtime_mono_t +qt_craft_monotonic(void) ; /* These are provided just in case gettimeofday() != CLOCK_REALTIME */ -Inline qtime_t +Inline qtime_tod_t qt_get_timeofday(void) ; /* gettimeofday(&tv, NULL) */ -Inline qtime_t /* monotonic time from timeofday */ -qt_timeofday2monotonic(qtime_t timeofday) ; -Inline qtime_t /* timeofday from monotonic time */ -qt_monotonic2timeofday(qtime_t monotonic) ; +Inline qtime_tod_t +qt_add_timeofday(qtime_t interval) ; /* qt_get_timeofday() + interval */ + +Inline qtime_mono_t /* monotonic time from timeofday */ +qt_timeofday2monotonic(qtime_tod_t timeofday) ; +Inline qtime_tod_t /* timeofday from monotonic time */ +qt_monotonic2timeofday(qtime_mono_t monotonic) ; /*============================================================================== * Inline conversion functions @@ -196,34 +211,32 @@ qt_clock_gettime(clockid_t clock_id) return timespec2qtime(&ts) ; } ; -/* gettimeofday(&tv, NULL) -- returning qtime_t value - */ -Inline qtime_t -qt_get_timeofday(void) -{ - struct timeval tv ; - gettimeofday(&tv, NULL) ; - return timeval2qtime(&tv) ; -} - /* clock_gettime(CLOCK_REALTIME, ...) -- returning qtime_t value * * While possibility of error is essentially theoretical, must treat it as a * FATAL error -- cannot continue with broken time value ! */ -Inline qtime_t +Inline qtime_real_t qt_get_realtime(void) { return qt_clock_gettime(CLOCK_REALTIME) ; } ; +/* qt_get_realtime() + interval + */ +Inline qtime_real_t +qt_add_realtime(qtime_t interval) +{ + return qt_get_realtime() + interval; +} ; + /* clock_gettime(CLOCK_MONOTONIC, ...) OR qt_craft_monotonic() * -- returning qtime_t value * * While possibility of error is essentially theoretical, must treat it as a * FATAL error -- cannot continue with broken time value ! */ -Inline qtime_t +Inline qtime_mono_t qt_get_monotonic(void) { #ifdef HAVE_CLOCK_MONOTONIC @@ -233,34 +246,60 @@ qt_get_monotonic(void) #endif } ; +/* qt_get_monotonic() + interval + */ +Inline qtime_mono_t +qt_add_monotonic(qtime_t interval) +{ + return qt_get_monotonic() + interval; +} ; + +/* gettimeofday(&tv, NULL) -- returning qtime_t value + */ +Inline qtime_tod_t +qt_get_timeofday(void) +{ + struct timeval tv ; + gettimeofday(&tv, NULL) ; + return timeval2qtime(&tv) ; +} + +/* qt_get_timeofday() + interval + */ +Inline qtime_tod_t +qt_add_timeofday(qtime_t interval) +{ + return qt_get_timeofday() + interval; +} ; + /*============================================================================== * Conversion between realtime/timeofday and monotonic */ /* Convert a CLOCK_REALTIME time to our local monotonic time. */ -Inline qtime_t -qt_realtime2monotonic(qtime_t realtime) +Inline qtime_mono_t +qt_realtime2monotonic(qtime_real_t realtime) { return qt_get_monotonic() + (realtime - qt_get_realtime()) ; } ; /* Convert a local monotonic time to CLOCK_REALTIME time. */ -Inline qtime_t -qt_monotonic2realtime(qtime_t monotonic) +Inline qtime_real_t +qt_monotonic2realtime(qtime_mono_t monotonic) { return qt_get_realtime() + (monotonic - qt_get_monotonic()) ; } ; /* Convert a gettimeofday() time to our local monotonic time. */ -Inline qtime_t -qt_timeofday2monotonic(qtime_t timeofday) +Inline qtime_mono_t +qt_timeofday2monotonic(qtime_tod_t timeofday) { return qt_get_monotonic() + (timeofday - qt_get_timeofday()) ; } ; /* Convert a local monotonic time to gettimeofday() time. */ -Inline qtime_t -qt_monotonic2timeofday(qtime_t monotonic) +Inline qtime_tod_t +qt_monotonic2timeofday(qtime_mono_t monotonic) { return qt_get_timeofday() + (monotonic - qt_get_monotonic()) ; } ; |