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Ian Campbell
443701ef0c
As recommended in http://www.gnu.org/licenses/gpl-howto.en.html. This is the result of: $ git grep -El Mass\|Temple\|Franklin | xargs ./fsf.pl Where fsf.pl is: #!/usr/bin/perl -w -pi.bak -0777 my $repl = 'If not, see <http://www.gnu.org/licenses/>.'; my $br = qr/(?:\s*\n\s*(?:[\*\#]|\/\/|\.\\" )?\s*|\s+)/; my $inwt = qr/[Ii]f${br}not,${br}write${br}(?:to${br})?the${br}Free${br}Software${br}Foundation,(?:${br}Inc\.,)?/; my $mass = qr/675${br}Mass${br}Ave,?${br}Cambridge,?${br}MA${br}02139,?${br}USA,?\.?/; my $franklin = qr/51${br}Franklin${br}St(?:reet)?(?:,${br}| - )Fifth${br}Floor,?${br}Boston,?${br}MA,?${br}02110-1301,?${br}USA,?\.?/; my $temple = qr/59${br}Temple${br}Place(?:,${br}| - )Suite${br}330,?${br}Boston,?${br}MA,?${br}021110?-1307,?${br}USA,?\.?/; s|$inwt$br$mass|$repl|m; s|$inwt$br$franklin|$repl|m; s|$inwt$br$temple|$repl|m; The only remaining mentions of these addresses are in COPYING files which I haven't touched. Some of the changed files are imports from elsewhere, however filtering them out is tricky, I think it is tolerable to have these files be modified here and then perhaps reverted on the next sync, since it's only 1-2 lines and obvious what is going on. Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
/******************************************************************************
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*
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* Copyright (c) 2009 Citrix Systems, Inc. (Grzegorz Milos)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <pthread.h>
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#include <inttypes.h>
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#include <unistd.h>
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#include <errno.h>
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#include "bidir-hash.h"
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#include "memshr-priv.h"
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static struct blockshr_hash *blks_hash;
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/* Callback in the iterator, remember this value, and leave */
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int find_one(vbdblk_t k, share_tuple_t v, void *priv)
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{
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share_tuple_t *rv = (share_tuple_t *) priv;
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*rv = v;
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/* Break out of iterator loop */
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return 1;
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}
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void* bidir_daemon(void *unused)
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{
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uint32_t nr_ent, max_nr_ent, tab_size, max_load, min_load;
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while(1)
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{
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blockshr_hash_sizes( blks_hash,
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&nr_ent,
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&max_nr_ent,
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&tab_size,
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&max_load,
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&min_load);
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/* Remove some hints as soon as we get to 90% capacity */
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if(10 * nr_ent > 9 * max_nr_ent)
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{
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share_tuple_t next_remove;
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int to_remove;
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int ret;
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to_remove = 0.1 * max_nr_ent;
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while(to_remove > 0)
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{
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/* We use the iterator to get one entry */
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next_remove.handle = 0;
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ret = blockshr_hash_iterator(blks_hash, find_one, &next_remove);
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if ( !ret )
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if ( next_remove.handle == 0 )
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ret = -ESRCH;
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if ( !ret )
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ret = blockshr_shrhnd_remove(blks_hash, next_remove, NULL);
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if(ret <= 0)
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{
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/* We failed to remove an entry, because of a serious hash
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* table error */
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DPRINTF("Could not remove handle %"PRId64", error: %d\n",
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next_remove.handle, ret);
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/* Force to exit the loop early */
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to_remove = 0;
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} else
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if(ret > 0)
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{
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/* Managed to remove the entry. Note next_remove not
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* incremented, in case there are duplicates */
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to_remove--;
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}
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}
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}
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sleep(1);
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}
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}
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void bidir_daemon_launch(void)
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{
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pthread_t thread;
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pthread_create(&thread, NULL, bidir_daemon, NULL);
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}
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void bidir_daemon_initialize(struct blockshr_hash *blks)
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{
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blks_hash = blks;
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bidir_daemon_launch();
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}
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