Sleep (system call)

A computer program (process, task, or thread) may sleep, which places it into an inactive state for a period of time. Eventually the expiration of an interval timer, or the receipt of a signal or interrupt causes the program to resume execution.

Usage

A typical sleep system call takes a time value as a parameter, specifying the minimum amount of time that the process is to sleep before resuming execution. The parameter typically specifies seconds, although some operating systems provide finer resolution, such as milliseconds or microseconds.

Windows

On Windows, the Sleep() function takes a single parameter of the number of milliseconds to sleep. The Sleep() function is included in kernel32.dll, but no sleep command (executable) is natively available for scripts (batch files). It can be found in collections of Windows utilities like Windows 2003 Resource Kit.

Unix

On Unix-like operating systems, the sleep() function is called providing a single parameter of type unsigned integer of the number of seconds to sleep. (For more precise sleep times one can use the usleep() function.)

Conjure One (album)

Conjure One is the self-titled debut album by Canadian electronic music project Conjure One, headed by Rhys Fulber. The album was released in September 2002 (see 2002 in music).

Track listing

All tracks written by Rhys Fulber, except where noted.

Sleep (disambiguation)

Human sleep and animal sleep (non-human) are a form of rest.

Sleep or Sleeping can also refer to:

In biology

In computer systems

In media and fine art

In music

Artists

International Civil Aviation Organization airport code

The ICAO (/ˌaɪˌkeɪˈoʊ/, "IK-KAY-OH") airport code or location indicator is a four-character alphanumeric code designating aerodromes around the world. These codes are defined by the International Civil Aviation Organization, and published in ICAO Document 7910: Location Indicators are used by air traffic control and airline operations such as flight planning. They differ from IATA codes, which are generally used for airline timetables, reservations, and baggage tags. For example, the IATA code for London's Heathrow Airport is LHR and its ICAO code is EGLL. ICAO codes are commonly seen by passengers and the general public on flight-tracking services such as FlightAware. In general IATA codes are usually derived from the name of the airport or the city it serves, while ICAO codes are distributed by region and country.

ICAO codes are also used to identify other aviation facilities such as weather stations, International Flight Service Stations or Area Control Centers, whether or not they are located at airports.