[Overview][Constants][Types][Procedures and functions][Index] |
Suspend process for a short time
Source position: bunxh.inc line 99
function FpNanoSleep( |
req: ptimespec; |
rem: ptimespec |
):cint; |
FpNanoSleep suspends the process till a time period as specified in req has passed. Then the function returns. If the call was interrupted (e.g. by some signal) then the function may return earlier, and rem will contain the remaining time till the end of the intended period. In this case the return value will be -1, and ErrNo will be set to EINTR
If the function returns without error, the return value is zero.
If an error occurred or the call was interrupted, -1 is returned. Extended error information can be retrieved using fpGetErrno.
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Wait for a signal to arrive |
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Schedule an alarm signal to be delivered |
program example72; { Program to demonstrate the NanoSleep function. } uses BaseUnix; Var Req,Rem : TimeSpec; Res : Longint; begin With Req do begin tv_sec:=10; tv_nsec:=100; end; Write('NanoSleep returned : '); Flush(Output); Res:=(fpNanoSleep(@Req,@rem)); Writeln(res); If (res<>0) then With rem do begin Writeln('Remaining seconds : ',tv_sec); Writeln('Remaining nanoseconds : ',tv_nsec); end; end.