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Remove plugin and device GRWLocks

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This only have any protective effect if we're using multiple threads -- which
we're not. Removing these unused locks does not affect startup speed, but does
drop the idle RSS by ~10kB.
This commit is contained in:
Richard Hughes 2022-12-12 16:35:28 +00:00
parent 18dac1885d
commit 83c90262d1
2 changed files with 1 additions and 46 deletions
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36
libfwupdplugin/fu-device.c
View File

@ -56,9 +56,7 @@ typedef struct {
FuContext *ctx;
GHashTable *inhibits; /* (nullable) */
GHashTable *metadata; /* (nullable) */
GRWLock metadata_mutex;
GPtrArray *parent_guids;
GRWLock parent_guids_mutex;
GPtrArray *parent_physical_ids; /* (nullable) */
guint remove_delay; /* ms */
guint acquiesce_delay; /* ms */
@ -1459,10 +1457,7 @@ GPtrArray *
fu_device_get_parent_guids(FuDevice *self)
{
FuDevicePrivate *priv = GET_PRIVATE(self);
g_autoptr(GRWLockReaderLocker) locker =
g_rw_lock_reader_locker_new(&priv->parent_guids_mutex);
g_return_val_if_fail(FU_IS_DEVICE(self), NULL);
g_return_val_if_fail(locker != NULL, NULL);
return priv->parent_guids;
}
@ -1481,12 +1476,9 @@ gboolean
fu_device_has_parent_guid(FuDevice *self, const gchar *guid)
{
FuDevicePrivate *priv = GET_PRIVATE(self);
g_autoptr(GRWLockReaderLocker) locker =
g_rw_lock_reader_locker_new(&priv->parent_guids_mutex);
g_return_val_if_fail(FU_IS_DEVICE(self), FALSE);
g_return_val_if_fail(guid != NULL, FALSE);
g_return_val_if_fail(locker != NULL, FALSE);
for (guint i = 0; i < priv->parent_guids->len; i++) {
const gchar *guid_tmp = g_ptr_array_index(priv->parent_guids, i);
@ -1516,7 +1508,6 @@ void
fu_device_add_parent_guid(FuDevice *self, const gchar *guid)
{
FuDevicePrivate *priv = GET_PRIVATE(self);
g_autoptr(GRWLockWriterLocker) locker = NULL;
g_return_if_fail(FU_IS_DEVICE(self));
g_return_if_fail(guid != NULL);
@ -1534,8 +1525,6 @@ fu_device_add_parent_guid(FuDevice *self, const gchar *guid)
/* already valid */
if (fu_device_has_parent_guid(self, guid))
return;
locker = g_rw_lock_writer_locker_new(&priv->parent_guids_mutex);
g_return_if_fail(locker != NULL);
g_ptr_array_add(priv->parent_guids, g_strdup(guid));
}
@ -2313,10 +2302,8 @@ const gchar *
fu_device_get_metadata(FuDevice *self, const gchar *key)
{
FuDevicePrivate *priv = GET_PRIVATE(self);
g_autoptr(GRWLockReaderLocker) locker = g_rw_lock_reader_locker_new(&priv->metadata_mutex);
g_return_val_if_fail(FU_IS_DEVICE(self), NULL);
g_return_val_if_fail(key != NULL, NULL);
g_return_val_if_fail(locker != NULL, NULL);
if (priv->metadata == NULL)
return NULL;
return g_hash_table_lookup(priv->metadata, key);
@ -2338,11 +2325,9 @@ fu_device_get_metadata_boolean(FuDevice *self, const gchar *key)
{
FuDevicePrivate *priv = GET_PRIVATE(self);
const gchar *tmp;
g_autoptr(GRWLockReaderLocker) locker = g_rw_lock_reader_locker_new(&priv->metadata_mutex);
g_return_val_if_fail(FU_IS_DEVICE(self), FALSE);
g_return_val_if_fail(key != NULL, FALSE);
g_return_val_if_fail(locker != NULL, FALSE);
if (priv->metadata == NULL)
return FALSE;
@ -2370,11 +2355,9 @@ fu_device_get_metadata_integer(FuDevice *self, const gchar *key)
const gchar *tmp;
gchar *endptr = NULL;
guint64 val;
g_autoptr(GRWLockReaderLocker) locker = g_rw_lock_reader_locker_new(&priv->metadata_mutex);
g_return_val_if_fail(FU_IS_DEVICE(self), G_MAXUINT);
g_return_val_if_fail(key != NULL, G_MAXUINT);
g_return_val_if_fail(locker != NULL, G_MAXUINT);
if (priv->metadata == NULL)
return G_MAXUINT;
@ -2402,10 +2385,8 @@ void
fu_device_remove_metadata(FuDevice *self, const gchar *key)
{
FuDevicePrivate *priv = GET_PRIVATE(self);
g_autoptr(GRWLockWriterLocker) locker = g_rw_lock_writer_locker_new(&priv->metadata_mutex);
g_return_if_fail(FU_IS_DEVICE(self));
g_return_if_fail(key != NULL);
g_return_if_fail(locker != NULL);
if (priv->metadata == NULL)
return;
g_hash_table_remove(priv->metadata, key);
@ -2425,14 +2406,11 @@ void
fu_device_set_metadata(FuDevice *self, const gchar *key, const gchar *value)
{
FuDevicePrivate *priv = GET_PRIVATE(self);
g_autoptr(GRWLockWriterLocker) locker = g_rw_lock_writer_locker_new(&priv->metadata_mutex);
g_return_if_fail(FU_IS_DEVICE(self));
g_return_if_fail(key != NULL);
g_return_if_fail(value != NULL);
g_return_if_fail(locker != NULL);
if (priv->metadata == NULL) {
if (priv->metadata == NULL)
priv->metadata = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
}
g_hash_table_insert(priv->metadata, g_strdup(key), g_strdup(value));
}
@ -3830,9 +3808,6 @@ fu_device_add_string(FuDevice *self, guint idt, GString *str)
FuDeviceClass *klass = FU_DEVICE_GET_CLASS(self);
FuDevicePrivate *priv = GET_PRIVATE(self);
g_autofree gchar *tmp = NULL;
g_autoptr(GRWLockReaderLocker) locker = g_rw_lock_reader_locker_new(&priv->metadata_mutex);
g_return_if_fail(locker != NULL);
tmp = fwupd_device_to_string(FWUPD_DEVICE(self));
if (tmp != NULL && tmp[0] != '\0')
@ -5091,17 +5066,14 @@ fu_device_incorporate(FuDevice *self, FuDevice *donor)
fu_device_set_custom_flags(self, priv_donor->custom_flags);
if (priv->ctx == NULL)
fu_device_set_context(self, fu_device_get_context(donor));
g_rw_lock_reader_lock(&priv_donor->parent_guids_mutex);
for (guint i = 0; i < parent_guids->len; i++)
fu_device_add_parent_guid(self, g_ptr_array_index(parent_guids, i));
g_rw_lock_reader_unlock(&priv_donor->parent_guids_mutex);
if (parent_physical_ids != NULL) {
for (guint i = 0; i < parent_physical_ids->len; i++) {
const gchar *tmp = g_ptr_array_index(parent_physical_ids, i);
fu_device_add_parent_physical_id(self, tmp);
}
}
g_rw_lock_reader_lock(&priv_donor->metadata_mutex);
if (priv->metadata != NULL) {
g_hash_table_iter_init(&iter, priv_donor->metadata);
while (g_hash_table_iter_next(&iter, &key, &value)) {
@ -5109,7 +5081,6 @@ fu_device_incorporate(FuDevice *self, FuDevice *donor)
fu_device_set_metadata(self, key, value);
}
}
g_rw_lock_reader_unlock(&priv_donor->metadata_mutex);
/* probably not required, but seems safer */
for (guint i = 0; i < priv_donor->possible_plugins->len; i++) {
@ -5778,8 +5749,6 @@ fu_device_init(FuDevice *self)
priv->instance_hash = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
priv->backend_tags = g_ptr_array_new_with_free_func(g_free);
priv->acquiesce_delay = 50; /* ms */
g_rw_lock_init(&priv->parent_guids_mutex);
g_rw_lock_init(&priv->metadata_mutex);
priv->notify_flags_handler_id = g_signal_connect(FWUPD_DEVICE(self),
"notify::flags",
G_CALLBACK(fu_device_flags_notify_cb),
@ -5792,9 +5761,6 @@ fu_device_finalize(GObject *object)
FuDevice *self = FU_DEVICE(object);
FuDevicePrivate *priv = GET_PRIVATE(self);
g_rw_lock_clear(&priv->metadata_mutex);
g_rw_lock_clear(&priv->parent_guids_mutex);
if (priv->alternate != NULL)
g_object_unref(priv->alternate);
if (priv->proxy != NULL)

11
libfwupdplugin/fu-plugin.c
View File

@ -49,7 +49,6 @@ typedef struct {
FuContext *ctx;
GArray *device_gtypes; /* (nullable): of #GType */
GHashTable *cache; /* (nullable): platform_id:GObject */
GRWLock cache_mutex;
GHashTable *report_metadata; /* (nullable): key:value */
GFileMonitor *config_monitor;
FuPluginData *data;
@ -163,10 +162,8 @@ gpointer
fu_plugin_cache_lookup(FuPlugin *self, const gchar *id)
{
FuPluginPrivate *priv = GET_PRIVATE(self);
g_autoptr(GRWLockReaderLocker) locker = g_rw_lock_reader_locker_new(&priv->cache_mutex);
g_return_val_if_fail(FU_IS_PLUGIN(self), NULL);
g_return_val_if_fail(id != NULL, NULL);
g_return_val_if_fail(locker != NULL, NULL);
if (priv->cache == NULL)
return NULL;
return g_hash_table_lookup(priv->cache, id);
@ -186,11 +183,9 @@ void
fu_plugin_cache_add(FuPlugin *self, const gchar *id, gpointer dev)
{
FuPluginPrivate *priv = GET_PRIVATE(self);
g_autoptr(GRWLockWriterLocker) locker = g_rw_lock_writer_locker_new(&priv->cache_mutex);
g_return_if_fail(FU_IS_PLUGIN(self));
g_return_if_fail(id != NULL);
g_return_if_fail(G_IS_OBJECT(dev));
g_return_if_fail(locker != NULL);
if (priv->cache == NULL) {
priv->cache = g_hash_table_new_full(g_str_hash,
g_str_equal,
@ -213,10 +208,8 @@ void
fu_plugin_cache_remove(FuPlugin *self, const gchar *id)
{
FuPluginPrivate *priv = GET_PRIVATE(self);
g_autoptr(GRWLockWriterLocker) locker = g_rw_lock_writer_locker_new(&priv->cache_mutex);
g_return_if_fail(FU_IS_PLUGIN(self));
g_return_if_fail(id != NULL);
g_return_if_fail(locker != NULL);
if (priv->cache == NULL)
return;
g_hash_table_remove(priv->cache, id);
@ -2804,8 +2797,6 @@ fu_plugin_class_init(FuPluginClass *klass)
static void
fu_plugin_init(FuPlugin *self)
{
FuPluginPrivate *priv = GET_PRIVATE(self);
g_rw_lock_init(&priv->cache_mutex);
}
static void
@ -2815,8 +2806,6 @@ fu_plugin_finalize(GObject *object)
FuPluginPrivate *priv = GET_PRIVATE(self);
FuPluginVfuncs *vfuncs = fu_plugin_get_vfuncs(self);
g_rw_lock_clear(&priv->cache_mutex);
/* optional */
if (priv->done_init && vfuncs->finalize != NULL) {
g_debug("finalize(%s)", fu_plugin_get_name(self));