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libsysprof-gtk: reinit after removing item from set

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Otherwise we risk accessing bits inside the structure that were freed.
This commit is contained in:
Christian Hergert
2023-06-26 17:43:28 -07:00
parent 40b4ff4a36
commit 15dcbbc948
1 changed files with 21 additions and 13 deletions
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34
src/libsysprof-gtk/sysprof-normalized-series.c
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@ -41,6 +41,8 @@ struct _SysprofNormalizedSeries
gulong range_changed_handler;
guint update_source;
guint disposed : 1;
};
struct _SysprofNormalizedSeriesClass
@ -64,6 +66,7 @@ static gboolean
sysprof_normalized_series_update_missing (gpointer user_data)
{
SysprofNormalizedSeries *self = user_data;
g_autoptr(GtkExpression) expression = NULL;
g_autoptr(GListModel) model = NULL;
g_autoptr(EggBitset) bitset = NULL;
EggBitsetIter iter;
@ -71,14 +74,15 @@ sysprof_normalized_series_update_missing (gpointer user_data)
g_assert (SYSPROF_IS_NORMALIZED_SERIES (self));
if (self->missing == NULL)
if (self->missing == NULL || self->disposed)
{
self->update_source = 0;
return G_SOURCE_REMOVE;
}
model = g_object_ref (sysprof_series_get_model (self->series));
bitset = egg_bitset_ref (self->missing);
model = g_object_ref (sysprof_series_get_model (self->series));
expression = gtk_expression_ref (self->expression);
if (egg_bitset_iter_init_first (&iter, bitset, &position))
{
@ -87,20 +91,23 @@ sysprof_normalized_series_update_missing (gpointer user_data)
for (;;)
{
GObject *item = g_list_model_get_item (model, position);
GValue value = G_VALUE_INIT;
guint next;
g_autoptr(GObject) item = g_list_model_get_item (model, position);
g_auto(GValue) value = G_VALUE_INIT;
guint next = GTK_INVALID_LIST_POSITION;
gtk_expression_evaluate (self->expression, item, &value);
gtk_expression_evaluate (expression, item, &value);
g_assert (self->values->len > position);
g_array_index (self->values, float, position) = _sysprof_axis_normalize (self->axis, &value);
egg_bitset_remove (bitset, position);
g_value_unset (&value);
g_clear_object (&item);
if (self->disposed)
break;
if (!egg_bitset_iter_next (&iter, &next) || next != position + 1)
if (!egg_bitset_iter_init_first (&iter, bitset, &next) ||
next != position + 1)
{
g_list_model_items_changed (G_LIST_MODEL (self),
first,
@ -109,7 +116,8 @@ sysprof_normalized_series_update_missing (gpointer user_data)
first = next;
}
if (g_get_monotonic_time () >= deadline)
if (next == GTK_INVALID_LIST_POSITION ||
g_get_monotonic_time () >= deadline)
break;
position = next;
@ -132,7 +140,7 @@ sysprof_normalized_series_maybe_update (SysprofNormalizedSeries *self)
g_assert (SYSPROF_IS_NORMALIZED_SERIES (self));
if (self->update_source)
if (self->update_source || self->disposed)
return;
if (!self->missing || egg_bitset_is_empty (self->missing))
@ -231,6 +239,8 @@ sysprof_normalized_series_dispose (GObject *object)
{
SysprofNormalizedSeries *self = (SysprofNormalizedSeries *)object;
self->disposed = TRUE;
g_clear_handle_id (&self->update_source, g_source_remove);
g_clear_signal_handler (&self->range_changed_handler, self->axis);
@ -239,8 +249,6 @@ sysprof_normalized_series_dispose (GObject *object)
g_clear_pointer (&self->expression, gtk_expression_unref);
egg_bitset_remove_all (self->missing);
G_OBJECT_CLASS (sysprof_normalized_series_parent_class)->dispose (object);
}