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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details:
*
* Copyright (C) 2011 Aleksander Morgado <aleksander@gnu.org>
*/
#include <glib.h>
#include "mm-port-probe.h"
#include "mm-port-probe-cache.h"
/* Cache of port probing objects */
static GHashTable *cache;
static gchar *
get_key (GUdevDevice *port)
{
return g_strdup_printf ("%s%s",
g_udev_device_get_subsystem (port),
g_udev_device_get_name (port));
}
static void
probe_remove (MMPortProbe *probe)
{
mm_port_probe_run_cancel (probe);
g_object_unref (probe);
}
MMPortProbe *
mm_port_probe_cache_get (GUdevDevice *port,
const gchar *physdev_path,
const gchar *driver)
{
MMPortProbe *probe = NULL;
gchar *key;
key = get_key (port);
if (G_UNLIKELY (!cache)) {
cache = g_hash_table_new_full (g_str_hash,
g_str_equal,
g_free,
(GDestroyNotify)probe_remove);
} else {
probe = g_hash_table_lookup (cache, key);
}
if (!probe) {
probe = mm_port_probe_new (port, physdev_path, driver);
g_hash_table_insert (cache, key, probe);
} else
g_free (key);
return g_object_ref (probe);
}
void
mm_port_probe_cache_remove (GUdevDevice *port)
{
gchar *key;
if (G_UNLIKELY (!cache))
return;
key = get_key (port);
g_hash_table_remove (cache, key);
g_free (key);
}
void
mm_port_probe_cache_clear (void)
{
if (G_UNLIKELY (!cache))
return;
g_hash_table_remove_all (cache);
}
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