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[src/trunk]: src/sys Add sel{record,remove}_knote(), so hide some of the deta...
details: https://anonhg.NetBSD.org/src/rev/7f227e3a5bd8
branches: trunk
changeset: 947097:7f227e3a5bd8
user: thorpej <thorpej%NetBSD.org@localhost>
date: Fri Dec 11 01:25:29 2020 +0000
description:
Add sel{record,remove}_knote(), so hide some of the details surrounding
knote / kevent registration in the selinfo structure.
diffstat:
sys/kern/sys_select.c | 26 ++++++++++++++++++++++++--
sys/sys/select.h | 5 ++++-
2 files changed, 28 insertions(+), 3 deletions(-)
diffs (70 lines):
diff -r 485636255a55 -r 7f227e3a5bd8 sys/kern/sys_select.c
--- a/sys/kern/sys_select.c Fri Dec 11 01:08:51 2020 +0000
+++ b/sys/kern/sys_select.c Fri Dec 11 01:25:29 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: sys_select.c,v 1.54 2020/04/19 20:35:29 ad Exp $ */
+/* $NetBSD: sys_select.c,v 1.55 2020/12/11 01:25:29 thorpej Exp $ */
/*-
* Copyright (c) 2007, 2008, 2009, 2010, 2019, 2020 The NetBSD Foundation, Inc.
@@ -84,7 +84,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sys_select.c,v 1.54 2020/04/19 20:35:29 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sys_select.c,v 1.55 2020/12/11 01:25:29 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -668,6 +668,28 @@
}
/*
+ * Record a knote.
+ *
+ * The caller holds the same lock as for selrecord().
+ */
+void
+selrecord_knote(struct selinfo *sip, struct knote *kn)
+{
+ SLIST_INSERT_HEAD(&sip->sel_klist, kn, kn_selnext);
+}
+
+/*
+ * Remove a knote.
+ *
+ * The caller holds the same lock as for selrecord().
+ */
+void
+selremove_knote(struct selinfo *sip, struct knote *kn)
+{
+ SLIST_REMOVE(&sip->sel_klist, kn, knote, kn_selnext);
+}
+
+/*
* sel_setevents: a helper function for selnotify(), to set the events
* for LWP sleeping in selcommon() or pollcommon().
*/
diff -r 485636255a55 -r 7f227e3a5bd8 sys/sys/select.h
--- a/sys/sys/select.h Fri Dec 11 01:08:51 2020 +0000
+++ b/sys/sys/select.h Fri Dec 11 01:25:29 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: select.h,v 1.37 2014/04/25 15:52:45 pooka Exp $ */
+/* $NetBSD: select.h,v 1.38 2020/12/11 01:25:29 thorpej Exp $ */
/*-
* Copyright (c) 1992, 1993
@@ -47,10 +47,13 @@
struct timespec;
struct cpu_info;
struct socket;
+struct knote;
int selcommon(register_t *, int, fd_set *, fd_set *, fd_set *,
struct timespec *, sigset_t *);
void selrecord(struct lwp *selector, struct selinfo *);
+void selrecord_knote(struct selinfo *, struct knote *);
+void selremove_knote(struct selinfo *, struct knote *);
void selnotify(struct selinfo *, int, long);
void selsysinit(struct cpu_info *);
void selinit(struct selinfo *);
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