diff options
| -rw-r--r-- | man2/poll.2 | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/man2/poll.2 b/man2/poll.2 index 0b023e0a5f..2799f56ac7 100644 --- a/man2/poll.2 +++ b/man2/poll.2 @@ -271,7 +271,7 @@ ready = ppoll(&fds, nfds, tmo_p, &sigmask); .EE .in .PP -is equivalent to +is nearly equivalent to .I atomically executing the following calls: .PP @@ -288,6 +288,17 @@ pthread_sigmask(SIG_SETMASK, &origmask, NULL); .EE .in .PP +The above code segment is described as +.I nearly +equivalent because whereas a negative +.I timeout +value for +.BR poll () +is interpreted as an infinite timeout, a negative value expressed in +.IR *tmo_p +results in an error from +.BR ppoll (). +.PP See the description of .BR pselect (2) for an explanation of why @@ -354,6 +365,12 @@ value exceeds the .B RLIMIT_NOFILE value. .TP +.B EINVAL +.RB ( ppoll ()) +The timeout value expressed in +.IR *ip +is invalid (negative). +.TP .B ENOMEM There was no space to allocate file descriptor tables. .SH VERSIONS |