This struct provides a namespace for platform‐neutral system‐clock procedures.

Synopsis

Declared in <bsls_timeutil.h>

struct TimeUtil;

Description

This struct provides a namespace for a set of platform‐neutral pure procedures to access real‐time system clock functionality. High‐resolution time functions intended for interval‐timing return an interval in nanoseconds (1 nsec = 1E‐9 sec) as a platform‐independent 64‐bit integer.

For maximum performance on some platforms where fetching the native clock is significantly faster than converting the fetched value to nanoseconds, this class also provides a "raw" method returning an opaque native time value and a conversion method returning a value in nanoseconds.

Type Aliases

Name

OpaqueNativeTime

Static Member Functions

Name

Description

convertRawTime

Convert an opaque native time value to nanoseconds.

getProcessSystemTimer

Return the current process system CPU time in nanoseconds.

getProcessTimers

Load the current process system and user CPU times in nanoseconds.

getProcessUserTimer

Return the current process user CPU time in nanoseconds.

getThreadSystemTimer

Return the current thread system CPU time in nanoseconds.

getThreadTimers

Load the current thread system and user CPU times in nanoseconds.

getThreadUserTimer

Return the current thread user CPU time in nanoseconds.

getTimer

Return the current wall time in nanoseconds from a fixed origin.

getTimerRaw

Load the current time as an opaque platform‐dependent value.

initialize

Perform platform‐dependent initialization for these utilities.

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