184 lines
5 KiB
C
184 lines
5 KiB
C
/*
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backend - common lumiera backend things
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Copyright (C) Lumiera.org
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2008, Christian Thaeter <ct@pipapo.org>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "include/logging.h"
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#include "lib/safeclib.h"
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#include "lib/mpool.h"
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#include "backend/backend.h"
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#include "common/config.h"
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#include "backend/filehandlecache.h"
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#include "backend/filedescriptor.h"
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#include "backend/filedescriptorregistry.h"
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#include "backend/mmapcache.h"
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#include "backend/threadpool.h"
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#include "backend/resourcecollector.h"
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#include <unistd.h>
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#include <sys/resource.h>
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//NOBUG_DEFINE_FLAG_PARENT (backend, lumiera); TODO
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//NOBUG_DEFINE_FLAG (backend);
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//NOBUG_DEFINE_FLAG_PARENT (file_all, backend);
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//NOBUG_DEFINE_FLAG_PARENT (filehandle, file_all);
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//NOBUG_DEFINE_FLAG_PARENT (mmapings, mmap_all);
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//NOBUG_DECLARE_FLAG (file);
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//NOBUG_DECLARE_FLAG (mmap_all);
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//NOBUG_DECLARE_FLAG (mmap);
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//NOBUG_DECLARE_FLAG (mmapings);
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//NOBUG_DECLARE_FLAG (mmapcache);
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static enum lumiera_resource_try
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lumiera_backend_mpool_purge (enum lumiera_resource_try itr, void* data, void* context);
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static void
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lumiera_backend_resourcecollector_register_mpool (MPool self);
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static void
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lumiera_backend_resourcecollector_unregister_mpool (MPool self);
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size_t lumiera_backend_pagesize;
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int
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lumiera_backend_init (void)
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{
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//NOBUG_INIT_FLAG (backend);
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//NOBUG_INIT_FLAG (file_all);
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//NOBUG_INIT_FLAG (file);
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//NOBUG_INIT_FLAG (filehandle);
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//NOBUG_INIT_FLAG (mmap_all);
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//NOBUG_INIT_FLAG (mmap);
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//NOBUG_INIT_FLAG (mmapings);
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//NOBUG_INIT_FLAG (mmapcache);
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TRACE (backend_dbg);
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lumiera_mutex_init (&lumiera_filecreate_mutex, "fileaccess", &NOBUG_FLAG (mutex_dbg), NOBUG_CONTEXT);
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lumiera_resourcecollector_init ();
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/* hook the resourcecollector into the mpool*/
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mpool_malloc_hook = lumiera_malloc;
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mpool_free_hook = lumiera_free;
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mpool_init_hook = lumiera_backend_resourcecollector_register_mpool;
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mpool_destroy_hook = lumiera_backend_resourcecollector_unregister_mpool;
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lumiera_threadpool_init ();
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PLANNED ("hook threadpool into the resourcecollector (maybe in threadpool_init() instead here");
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lumiera_filedescriptorregistry_init ();
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lumiera_backend_pagesize = sysconf(_SC_PAGESIZE);
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TODO ("add config options to override following defaults");
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const char* filehandles = lumiera_tmpbuf_snprintf (SIZE_MAX,
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"backend.file.max_handles = %d",
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/* roughly 2/3 of all availables filehandles are managed by the backend */
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(sysconf (_SC_OPEN_MAX)-10)*2/3);
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lumiera_config_setdefault (filehandles);
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long long max_entries;
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lumiera_config_number_get ("backend.file.max_handles", &max_entries);
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lumiera_filehandlecache_new (max_entries);
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#if SIZE_MAX <= 4294967295UL
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lumiera_config_setdefault ("backend.mmap.as_limit = 3221225469");
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#else
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lumiera_config_setdefault ("backend.mmap.as_limit = 211106232532992");
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#endif
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struct rlimit as_rlimit;
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getrlimit (RLIMIT_AS, &as_rlimit);
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long long as_limit = (long long)as_rlimit.rlim_cur;
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if (as_rlimit.rlim_cur == RLIM_INFINITY)
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{
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lumiera_config_number_get ("backend.mmap.as_limit", &as_limit);
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}
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else
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{
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INFO (backend, "address space limited to %luMiB", as_rlimit.rlim_cur/1024/1024);
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}
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lumiera_mmapcache_new (as_limit);
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return 0;
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}
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void
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lumiera_backend_destroy (void)
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{
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TRACE (backend_dbg);
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lumiera_mmapcache_delete ();
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lumiera_filehandlecache_delete ();
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lumiera_filedescriptorregistry_destroy ();
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lumiera_threadpool_destroy ();
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lumiera_resourcecollector_destroy ();
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lumiera_mutex_destroy (&lumiera_filecreate_mutex, &NOBUG_FLAG (mutex_dbg), NOBUG_CONTEXT);
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}
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static enum lumiera_resource_try
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lumiera_backend_mpool_purge (enum lumiera_resource_try itr, void* data, void* context)
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{
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(void) context;
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(void) data;
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(void) itr;
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TODO("mpool_purge ((MPool) data)");
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return LUMIERA_RESOURCE_NONE;
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}
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static void
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lumiera_backend_resourcecollector_register_mpool (MPool self)
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{
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self->udata =
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lumiera_resourcecollector_register_handler (LUMIERA_RESOURCE_MEMORY, lumiera_backend_mpool_purge, self);
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}
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static void
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lumiera_backend_resourcecollector_unregister_mpool (MPool self)
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{
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lumiera_resourcehandler_unregister ((LumieraResourcehandler) self->udata);
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}
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/*
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// Local Variables:
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// mode: C
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// c-file-style: "gnu"
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// indent-tabs-mode: nil
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// End:
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*/
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