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authoralfred <alfred@FreeBSD.org>2000-01-24 02:13:21 +0000
committeralfred <alfred@FreeBSD.org>2000-01-24 02:13:21 +0000
commit18f642a24834b07ff73db00adbde31b86a45c435 (patch)
tree6026d3b4441bcb9eb9a8ad8e1b33cc49036c87d6 /lib
parent3d91d4b50e14516d4e7a35827e63b8457158055b (diff)
downloadFreeBSD-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.211
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
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