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authorDavid Gwynne <dlg@cvs.openbsd.org>2014-07-02 00:49:51 +0000
committerDavid Gwynne <dlg@cvs.openbsd.org>2014-07-02 00:49:51 +0000
commit6378c10bd3dfa31237a2c50f0038d144c1b7597c (patch)
treeaa905071d2f9ecc2b4d68f42188b7ffac5deb12d /share/man
parent9fdafa0b5521ada372f380876f5148c0e348d54a (diff)
RETURN VALUES section
Diffstat (limited to 'share/man')
-rw-r--r--share/man/man9/pool.929
1 files changed, 23 insertions, 6 deletions
diff --git a/share/man/man9/pool.9 b/share/man/man9/pool.9
index 617008d597b..6125dfa2155 100644
--- a/share/man/man9/pool.9
+++ b/share/man/man9/pool.9
@@ -1,4 +1,4 @@
-.\" $OpenBSD: pool.9,v 1.47 2014/07/02 00:40:30 dlg Exp $
+.\" $OpenBSD: pool.9,v 1.48 2014/07/02 00:49:50 dlg Exp $
.\" $NetBSD: pool.9,v 1.18 2001/06/21 11:59:01 wiz Exp $
.\"
.\" Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
@@ -217,11 +217,6 @@ The handle identifying the pool resource instance.
The number of items to add to the pool.
.El
.Pp
-This function may return
-.Dv ENOMEM
-in case the requested number of items could not be allocated.
-Otherwise,
-the return value is 0.
.Ss SETTING POOL RESOURCE WATERMARKS
A pool will attempt to increase its resource usage to keep up with the demand
for its items.
@@ -339,6 +334,28 @@ If the pool has been initialised with an interrupt safe pool allocator
they can also be called from interrupt context at or below the
interrupt level specified by a call to
.Fn pool_setipl .
+.Sh RETURN VALUES
+.Fn pool_get
+will return a pointer to an item allocated from the pool.
+If
+.Dv PR_NOWAIT
+or
+.Dv PR_LIMITFAIL
+was passed as flags to the pool it may return
+.Dv NULL
+if there are no resources available or if the pool hard limit has been reached
+respectively.
+.Pp
+.Fn pool_prime
+will return
+.Dv ENOMEM
+if the requested number of items could not be allocated.
+Otherwise, the return value is 0.
+.Pp
+.Fn pool_sethardlimit
+will return
+.Dv EINVAL if the current size of the pool exceeds the requested hard limit.
+Otherwise, the return value is 0.
.Sh CODE REFERENCES
The pool manager is implemented in the file
.Pa sys/kern/subr_pool.c .