NetworkManager/libnm-glib/nm-object-cache.c
Thomas Haller 8bace23beb all: cleanup includes and let "nm-default.h" include "config.h"
- All internal source files (except "examples", which are not internal)
  should include "config.h" first. As also all internal source
  files should include "nm-default.h", let "config.h" be included
  by "nm-default.h" and include "nm-default.h" as first in every
  source file.
  We already wanted to include "nm-default.h" before other headers
  because it might contains some fixes (like "nm-glib.h" compatibility)
  that is required first.

- After including "nm-default.h", we optinally allow for including the
  corresponding header file for the source file at hand. The idea
  is to ensure that each header file is self contained.

- Don't include "config.h" or "nm-default.h" in any header file
  (except "nm-sd-adapt.h"). Public headers anyway must not include
  these headers, and internal headers are never included after
  "nm-default.h", as of the first previous point.

- Include all internal headers with quotes instead of angle brackets.
  In practice it doesn't matter, because in our public headers we must
  include other headers with angle brackets. As we use our public
  headers also to compile our interal source files, effectively the
  result must be the same. Still do it for consistency.

- Except for <config.h> itself. Include it with angle brackets as suggested by
  https://www.gnu.org/software/autoconf/manual/autoconf.html#Configuration-Headers
2016-02-19 17:53:25 +01:00

91 lines
2.3 KiB
C

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*
* Copyright 2008 Red Hat, Inc.
*/
#include "nm-default.h"
#include <string.h>
#include "nm-object-cache.h"
#include "nm-object.h"
static GHashTable *cache = NULL;
static void
_init_cache (void)
{
if (G_UNLIKELY (cache == NULL))
cache = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
}
static void
_nm_object_cache_remove_by_path (char *path)
{
_init_cache ();
g_hash_table_remove (cache, path);
g_free (path);
}
void
_nm_object_cache_add (NMObject *object)
{
char *path;
_init_cache ();
path = g_strdup (nm_object_get_path (object));
g_hash_table_insert (cache, path, object);
g_object_set_data_full (G_OBJECT (object), "nm-object-cache-tag",
g_strdup (path), (GDestroyNotify) _nm_object_cache_remove_by_path);
}
NMObject *
_nm_object_cache_get (const char *path)
{
NMObject *object;
_init_cache ();
object = g_hash_table_lookup (cache, path);
return object ? g_object_ref (object) : NULL;
}
void
_nm_object_cache_clear (void)
{
GHashTableIter iter;
GObject *obj;
const char *path;
char *foo;
if (!cache)
return;
g_hash_table_iter_init (&iter, cache);
while (g_hash_table_iter_next (&iter, (gpointer) &path, (gpointer) &obj)) {
/* Remove the callback so that if the object isn't yet released
* by a client, when it does finally get unrefed, it won't trigger
* the cache removal for a new object with the same path as the
* one being released.
*/
foo = g_object_steal_data (obj, "nm-object-cache-tag");
g_free (foo);
g_hash_table_iter_remove (&iter);
}
}