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Merge branch 'wip/carlosg/shared-hidden-cache-timeout' into 'master'

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glocalfileinfo: Use a single timeout source at a time for hidden file cache

See merge request GNOME/glib!1734
This commit is contained in:
Philip Withnall 2020-11-03 15:09:44 +00:00
commit e1e32e9b0b
1 changed files with 61 additions and 18 deletions
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79
gio/glocalfileinfo.c
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@ -1547,15 +1547,45 @@ win32_get_file_user_info (const gchar *filename,
/* support for '.hidden' files */
G_LOCK_DEFINE_STATIC (hidden_cache);
static GHashTable *hidden_cache;
static GSource *hidden_cache_source = NULL; /* Under the hidden_cache lock */
static guint hidden_cache_ttl_secs = 5;
static guint hidden_cache_ttl_jitter_secs = 2;
typedef struct
{
GHashTable *hidden_files;
gint64 timestamp_secs;
} HiddenCacheData;
static gboolean
remove_from_hidden_cache (gpointer user_data)
{
HiddenCacheData *data;
GHashTableIter iter;
gboolean retval;
gint64 timestamp_secs;
G_LOCK (hidden_cache);
g_hash_table_remove (hidden_cache, user_data);
timestamp_secs = g_source_get_time (hidden_cache_source) / G_USEC_PER_SEC;
g_hash_table_iter_init (&iter, hidden_cache);
while (g_hash_table_iter_next (&iter, NULL, (gpointer *) &data))
{
if (timestamp_secs > data->timestamp_secs + hidden_cache_ttl_secs)
g_hash_table_iter_remove (&iter);
}
if (g_hash_table_size (hidden_cache) == 0)
{
g_clear_pointer (&hidden_cache_source, g_source_unref);
retval = G_SOURCE_REMOVE;
}
else
retval = G_SOURCE_CONTINUE;
G_UNLOCK (hidden_cache);
return FALSE;
return retval;
}
static GHashTable *
@ -1593,16 +1623,19 @@ read_hidden_file (const gchar *dirname)
}
static void
maybe_unref_hash_table (gpointer data)
free_hidden_file_data (gpointer user_data)
{
if (data != NULL)
g_hash_table_unref (data);
HiddenCacheData *data = user_data;
g_clear_pointer (&data->hidden_files, g_hash_table_unref);
g_free (data);
}
static gboolean
file_is_hidden (const gchar *path,
const gchar *basename)
{
HiddenCacheData *data;
gboolean result;
gchar *dirname;
gpointer table;
@ -1613,28 +1646,38 @@ file_is_hidden (const gchar *path,
if G_UNLIKELY (hidden_cache == NULL)
hidden_cache = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, maybe_unref_hash_table);
g_free, free_hidden_file_data);
if (!g_hash_table_lookup_extended (hidden_cache, dirname,
NULL, &table))
NULL, (gpointer *) &data))
{
gchar *mydirname;
GSource *remove_from_cache_source;
data = g_new0 (HiddenCacheData, 1);
data->hidden_files = table = read_hidden_file (dirname);
data->timestamp_secs = g_get_monotonic_time () / G_USEC_PER_SEC;
g_hash_table_insert (hidden_cache,
mydirname = g_strdup (dirname),
table = read_hidden_file (dirname));
data);
remove_from_cache_source = g_timeout_source_new_seconds (5);
g_source_set_priority (remove_from_cache_source, G_PRIORITY_DEFAULT);
g_source_set_callback (remove_from_cache_source,
remove_from_hidden_cache,
mydirname,
NULL);
g_source_attach (remove_from_cache_source,
GLIB_PRIVATE_CALL (g_get_worker_context) ());
g_source_unref (remove_from_cache_source);
if (!hidden_cache_source)
{
hidden_cache_source =
g_timeout_source_new_seconds (hidden_cache_ttl_secs +
hidden_cache_ttl_jitter_secs);
g_source_set_priority (hidden_cache_source, G_PRIORITY_DEFAULT);
g_source_set_name (hidden_cache_source,
"[gio] remove_from_hidden_cache");
g_source_set_callback (hidden_cache_source,
remove_from_hidden_cache,
NULL, NULL);
g_source_attach (hidden_cache_source,
GLIB_PRIVATE_CALL (g_get_worker_context) ());
}
}
else
table = data->hidden_files;
result = table != NULL && g_hash_table_contains (table, basename);