[Overview][Constants][Types][Procedures and functions][Variables] |
Suspend process for a short time
Source position: oldlinux.pp line 1490
function NanoSleep( |
const req: timespec; |
var rem: timespec |
):LongInt; |
NanoSleepsuspends the process till a time period as specified in reqhas passed. Then the function returns. If the call was interrupted (e.g. by some signal) then the function may return earlier, and remwill contain the remaining time till the end of the intended period. In this case the return value will be -1, and LinuxErrorwill be set to EINTR
If the function returns without error, the return value is zero.
If the call was interrupted, -1 is returned, and LinuxErroris set to EINTR. If invalid time values were specified, then -1 is returned and LinuxErroris set to EINVAL.
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Wait for a signal |
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Schedule an alarm signal to be delivered |
program example72; { Program to demonstrate the NanoSleep function. } uses oldlinux; Var Req,Rem : TimeSpec; Res : Longint; begin With Req do begin tv_sec:=10; tv_nsec:=100; end; Write('NanoSleep returned : '); Flush(Output); Res:=(NanoSleep(Req,rem)); Writeln(res); If (res<>0) then With rem do begin Writeln('Remaining seconds : ',tv_sec); Writeln('Remaining nanoseconds : ',tv_nsec); end; end.