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* nscd/nscd.h (struct database_dyn): Add prunelock field.

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* nscd/cache.c (prune_cache): Take prunelock before starting the
	work.  Just return in case it is already taken.

	(inet6_option_alloc): Now a simple wrapper around option_alloc.
This commit is contained in:
Ulrich Drepper 2006-05-29 07:00:16 +00:00
parent ab50b2ec01
commit 9636a217e4
3 changed files with 18 additions and 2 deletions
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8
ChangeLog
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@ -1,3 +1,9 @@
2006-05-29 Ulrich Drepper <drepper@redhat.com>
* nscd/nscd.h (struct database_dyn): Add prunelock field.
* nscd/cache.c (prune_cache): Take prunelock before starting the
work. Just return in case it is already taken.
2006-05-25 Ulrich Drepper <drepper@redhat.com>
* nis/nis_removemember.c (nis_removemember): Avoid unnecessary
@ -12,7 +18,7 @@
inet6_option_alloc.
* inet/inet6_option.c (option_alloc): Renamed from
inet6_option_alloc. Made static.
(inet6_option_alloc): New a simple wrapper around option_alloc.
(inet6_option_alloc): Now a simple wrapper around option_alloc.
(inet6_option_append): Call option_alloc.
* include/netinet/in.h: Remove libc_hidden_proto for
inet6_option_alloc.

11
nscd/cache.c
View file

@ -1,4 +1,4 @@
/* Copyright (c) 1998, 1999, 2003, 2004, 2005 Free Software Foundation, Inc.
/* Copyright (c) 1998, 1999, 2003-2005, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
@ -198,6 +198,13 @@ prune_cache (struct database_dyn *table, time_t now)
if (cnt == 0)
return;
/* This function can be called from the cleanup thread but also in
response to an invalidate command. Make sure only one thread is
running. No need for the second to wait around. */
if (pthread_mutex_trylock (&table->prunelock) != 0)
/* Te work is already being done. */
return ;
/* If we check for the modification of the underlying file we invalidate
the entries also in this case. */
if (table->check_file)
@ -455,4 +462,6 @@ prune_cache (struct database_dyn *table, time_t now)
/* Run garbage collection if any entry has been removed or replaced. */
if (any)
gc (table);
pthread_mutex_unlock (&table->prunelock);
}

1
nscd/nscd.h
View file

@ -58,6 +58,7 @@ typedef enum
struct database_dyn
{
pthread_rwlock_t lock;
pthread_mutex_t prunelock;
int enabled;
int check_file;