Commit | Line | Data |
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c4665c80 TL |
1 | .TH SLEEP 3 |
2 | .SH NAME | |
3 | sleep \- suspend execution for interval | |
4 | .SH SYNOPSIS | |
5 | .B sleep(seconds) | |
6 | .br | |
7 | .B unsigned seconds; | |
8 | .SH DESCRIPTION | |
9 | The current process is suspended from execution for the number | |
10 | of seconds specified by the argument. | |
11 | The actual suspension time may be up to 1 second less than | |
12 | that requested, because scheduled wakeups occur at fixed 1-second intervals, | |
13 | and an arbitrary amount longer because of other activity | |
14 | in the system. | |
15 | .PP | |
16 | The routine is implemented by setting an alarm clock signal | |
17 | and pausing until it occurs. | |
18 | The previous state of this signal is saved and restored. | |
19 | If the sleep time exceeds the time to the alarm signal, | |
20 | the process sleeps only until the signal would have occurred, and the | |
21 | signal is sent 1 second later. | |
22 | .SH "SEE ALSO" | |
23 | alarm(2), pause(2) |