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| author | rsc <devnull@localhost> | 2004-04-10 18:53:55 +0000 |
|---|---|---|
| committer | rsc <devnull@localhost> | 2004-04-10 18:53:55 +0000 |
| commit | cfa37a7b1131abbab2e7d339b451f5f0e3198cc8 (patch) | |
| tree | a7fe52416e9d27efe2af2d54910112674c0fd7c6 /man/man3/sleep.3 | |
| parent | 08df2a433e69c94f9db002c83380cb2b693fee60 (diff) | |
| download | plan9port-cfa37a7b1131abbab2e7d339b451f5f0e3198cc8.tar.gz plan9port-cfa37a7b1131abbab2e7d339b451f5f0e3198cc8.tar.bz2 plan9port-cfa37a7b1131abbab2e7d339b451f5f0e3198cc8.zip | |
Lots of man pages.
Diffstat (limited to 'man/man3/sleep.3')
| -rw-r--r-- | man/man3/sleep.3 | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/man/man3/sleep.3 b/man/man3/sleep.3 new file mode 100644 index 00000000..d73f1eee --- /dev/null +++ b/man/man3/sleep.3 @@ -0,0 +1,45 @@ +.TH SLEEP 3 +.SH NAME +sleep, alarm \- delay, ask for delayed note +.SH SYNOPSIS +.B #include <u.h> +.br +.B #include <libc.h> +.PP +.B +int sleep(long millisecs) +.PP +.B +long alarm(unsigned long millisecs) +.SH DESCRIPTION +.I Sleep +suspends the current process for the number +of milliseconds specified by the argument. +The actual suspension time may be a little more or less than +the requested time. If +.I millisecs +is 0, the process +gives up the CPU if another process is waiting to run, returning +immediately if not. +Sleep returns \-1 if interrupted, 0 otherwise. +.PP +.I Alarm +causes an +.B alarm +note (see +.IR notify (2)) +to be sent to the invoking process after the number of milliseconds +given by the argument. +Successive calls to +.I alarm +reset the alarm clock. +A zero argument clears the alarm. +The return value is the amount of time previously remaining in +the alarm clock. +.SH SOURCE +.B /sys/src/libc/9syscall +.SH SEE ALSO +.IR intro (2) +.SH DIAGNOSTICS +These functions set +.IR errstr . |