diff options
| author | alfred <alfred@FreeBSD.org> | 2000-01-24 02:13:21 +0000 |
|---|---|---|
| committer | alfred <alfred@FreeBSD.org> | 2000-01-24 02:13:21 +0000 |
| commit | 18f642a24834b07ff73db00adbde31b86a45c435 (patch) | |
| tree | 6026d3b4441bcb9eb9a8ad8e1b33cc49036c87d6 /lib | |
| parent | 3d91d4b50e14516d4e7a35827e63b8457158055b (diff) | |
| download | FreeBSD-src-18f642a24834b07ff73db00adbde31b86a45c435.zip FreeBSD-src-18f642a24834b07ff73db00adbde31b86a45c435.tar.gz | |
Clarify that we don't offer hard realtime.
Split timeval options into 3 paragraphs, it's easier on my eyes.
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libc/sys/select.2 | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/lib/libc/sys/select.2 b/lib/libc/sys/select.2 index 938f0ec..b320099 100644 --- a/lib/libc/sys/select.2 +++ b/lib/libc/sys/select.2 @@ -104,10 +104,15 @@ to the maximum number of descriptors supported by the system. .Pp If .Fa timeout -is a non-nil pointer, it specifies a maximum interval to wait for the -selection to complete. If +is a non-nil pointer, it specifies the maximum interval to wait for the +selection to complete. System activity can lengthen the interval by +an indeterminate amount. +.Pp +If .Fa timeout -is a nil pointer, the select blocks indefinitely. To effect a poll, the +is a nil pointer, the select blocks indefinitely. +.Pp +To effect a poll, the .Fa timeout argument should be non-nil, pointing to a zero-valued timeval structure. .Pp |
