tsleep.3 - plan9port - [fork] Plan 9 from user space
 (HTM) git clone git://src.adamsgaard.dk/plan9port
 (DIR) Log
 (DIR) Files
 (DIR) Refs
 (DIR) README
 (DIR) LICENSE
       ---
       tsleep.3 (1150B)
       ---
            1 .TH SLEEP 3
            2 .SH NAME
            3 sleep, alarm \- delay, ask for delayed note
            4 .SH SYNOPSIS
            5 .B #include <u.h>
            6 .br
            7 .B #include <libc.h>
            8 .PP
            9 .B
           10 int sleep(long millisecs)
           11 .PP
           12 .B
           13 long alarm(unsigned long millisecs)
           14 .SH DESCRIPTION
           15 .I Sleep
           16 suspends the current process for the number
           17 of milliseconds specified by the argument.
           18 The actual suspension time may be a little more or less than
           19 the requested time. If
           20 .I millisecs
           21 is 0, the process
           22 gives up the CPU if another process is waiting to run, returning
           23 immediately if not.
           24 Sleep returns \-1 if interrupted, 0 otherwise.
           25 .PP
           26 .I Alarm
           27 causes an
           28 .B alarm
           29 note (see
           30 .MR notify (3) )
           31 to be sent to the invoking process after the number of milliseconds
           32 given by the argument.
           33 Successive calls to
           34 .I alarm
           35 reset the alarm clock.
           36 A zero argument clears the alarm.
           37 The return value is the amount of time previously remaining in
           38 the alarm clock.
           39 .SH SOURCE
           40 .B \*9/src/lib9/sleep.c
           41 .SH SEE ALSO
           42 .MR intro (3)
           43 .SH DIAGNOSTICS
           44 These functions set
           45 .IR errstr .
           46 .SH BUGS
           47 To avoid name conflicts with the underlying system,
           48 .I sleep
           49 and
           50 .I alarm
           51 are preprocessor macros defined as
           52 .I p9sleep
           53 and
           54 .IR p9alarm ;
           55 see
           56 .MR intro (3) .