Module System

Inheritance graph

Description: This module embodies common operating system calls, making them available to the Pike programmer.

Constant CPU_TIME_IMPLEMENTATION: constant string System.CPU_TIME_IMPLEMENTATION
Description: This string constant identifies the internal interface used to get the CPU time. It is an implementation detail - see rusage.c for possible values and their meanings.
See also: gethrvtime, gauge

Constant CPU_TIME_IS_THREAD_LOCAL: constant string System.CPU_TIME_IS_THREAD_LOCAL
Description: This string constant tells whether or not the CPU time, returned by e.g. gethrvtime, is thread local or not. The value is "yes" if it is and "no" if it isn't. The value is also "no" if there is no thread support.
See also: gethrvtime, gauge

Constant CPU_TIME_RESOLUTION: constant int System.CPU_TIME_RESOLUTION
Description: The resolution of the CPU time, returned by e.g. gethrvtime, in nanoseconds. It is -1 if the resolution isn't known.
See also: gethrvtime, gauge

Constant ITIMER_PROF: constant System.ITIMER_PROF
Description: Identifier for a timer that decrements both when the process is executing and when the system is executing on behalf of the process.
See also: setitimer, getitimer

Constant ITIMER_REAL: constant System.ITIMER_REAL
Description: Identifier for a timer that decrements in real time.
See also: setitimer, getitimer

Constant ITIMER_VIRTUAL: constant System.ITIMER_VIRTUAL
Description: Identifier for a timer that decrements only when the process is executing.
See also: setitimer, getitimer

Constant REAL_TIME_IMPLEMENTATION: constant string System.REAL_TIME_IMPLEMENTATION
Description: This string constant identifies the internal interface used to get the high resolution real time. It is an implementation detail - see rusage.c for possible values and their meanings.
See also: gethrtime

Constant REAL_TIME_IS_MONOTONIC

constant string System.REAL_TIME_IS_MONOTONIC

Description

This string constant tells whether or not the high resolution real time returned by gethrtime, is monotonic or not. The value is "yes" if it is and "no" if it isn't.

Monotonic time is not affected by clock adjustments that might happen to keep the calendaric clock in synch. It's therefore more suited to measure time intervals in programs.

See also

gethrtime

Constant REAL_TIME_RESOLUTION: constant int System.REAL_TIME_RESOLUTION
Description: The resolution of the real time returned by gethrtime, in nanoseconds. It is -1 if the resolution isn't known.
See also: gethrtime

Inherit _system: inherit _system : _system