libsysprof-analyze: add GListModel of callgraph symbols

This has an indirect object (SysprofCallgraphSymbol) so that we can provide
plumbing to get the callgraph as well as the augmented data from the
indirection object.

This allows for callgraphs to show overview in the functions list which
contains the same augmentation that the descendants view does.

src/libsysprof-analyze/sysprof-callgraph-symbol.c

@@ -0,0 +1,241 @@
+/* sysprof-callgraph-symbol.c
+ *
+ * Copyright 2023 Christian Hergert <chergert@redhat.com>
+ *
+ * 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 3 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include "config.h"
+
+#include <gio/gio.h>
+
+#include "sysprof-callgraph-private.h"
+#include "sysprof-callgraph-symbol-private.h"
+
+struct _SysprofCallgraphSymbol
+{
+  GObject           parent_instance;
+  SysprofCallgraph *callgraph;
+  SysprofSymbol    *symbol;
+};
+
+enum {
+  PROP_0,
+  PROP_CALLGRAPH,
+  PROP_SYMBOL,
+  N_PROPS
+};
+
+G_DEFINE_FINAL_TYPE (SysprofCallgraphSymbol, sysprof_callgraph_symbol, G_TYPE_OBJECT)
+
+static GParamSpec *properties [N_PROPS];
+
+static void
+sysprof_callgraph_symbol_finalize (GObject *object)
+{
+  SysprofCallgraphSymbol *self = (SysprofCallgraphSymbol *)object;
+
+  g_clear_weak_pointer (&self->callgraph);
+  g_clear_object (&self->symbol);
+
+  G_OBJECT_CLASS (sysprof_callgraph_symbol_parent_class)->finalize (object);
+}
+
+static void
+sysprof_callgraph_symbol_get_property (GObject    *object,
+                                      guint       prop_id,
+                                      GValue     *value,
+                                      GParamSpec *pspec)
+{
+  SysprofCallgraphSymbol *self = SYSPROF_CALLGRAPH_SYMBOL (object);
+
+  switch (prop_id)
+    {
+    case PROP_CALLGRAPH:
+      g_value_set_object (value, self->callgraph);
+      break;
+
+    case PROP_SYMBOL:
+      g_value_set_object (value, sysprof_callgraph_symbol_get_symbol (self));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    }
+}
+
+static void
+sysprof_callgraph_symbol_class_init (SysprofCallgraphSymbolClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = sysprof_callgraph_symbol_finalize;
+  object_class->get_property = sysprof_callgraph_symbol_get_property;
+
+  properties [PROP_CALLGRAPH] =
+    g_param_spec_object ("callgraph", NULL, NULL,
+                         SYSPROF_TYPE_CALLGRAPH,
+                         (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+  properties [PROP_SYMBOL] =
+    g_param_spec_object ("symbol", NULL, NULL,
+                         SYSPROF_TYPE_SYMBOL,
+                         (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_properties (object_class, N_PROPS, properties);
+}
+
+static void
+sysprof_callgraph_symbol_init (SysprofCallgraphSymbol *self)
+{
+}
+
+SysprofCallgraphSymbol *
+_sysprof_callgraph_symbol_new (SysprofCallgraph *callgraph,
+                               SysprofSymbol    *symbol)
+{
+  SysprofCallgraphSymbol *self;
+
+  g_return_val_if_fail (SYSPROF_IS_CALLGRAPH (callgraph), NULL);
+  g_return_val_if_fail (SYSPROF_IS_SYMBOL (symbol), NULL);
+
+  self = g_object_new (SYSPROF_TYPE_CALLGRAPH_SYMBOL, NULL);
+  g_set_weak_pointer (&self->callgraph, callgraph);
+  g_set_object (&self->symbol, symbol);
+
+  return self;
+}
+
+/**
+ * sysprof_callgraph_symbol_get_symbol:
+ * @self: a #SysprofCallgraphSymbol
+ *
+ * Gets the symbol for the symbol.
+ *
+ * Returns: (nullable) (transfer none): a #SysprofSymbol
+ */
+SysprofSymbol *
+sysprof_callgraph_symbol_get_symbol (SysprofCallgraphSymbol *self)
+{
+  g_return_val_if_fail (SYSPROF_IS_CALLGRAPH_SYMBOL (self), NULL);
+
+  return self->symbol;
+}
+
+/**
+ * sysprof_callgraph_symbol_get_summary_augment: (skip)
+ * @self: a #SysprofCallgraphSymbol
+ *
+ * Gets the augmentation that was attached to the summary for
+ * the callgraph node's symbol.
+ *
+ * Returns: (nullable) (transfer none): the augmentation data
+ */
+gpointer
+sysprof_callgraph_symbol_get_summary_augment (SysprofCallgraphSymbol *self)
+{
+  g_return_val_if_fail (SYSPROF_IS_CALLGRAPH_SYMBOL (self), NULL);
+
+  if (self->callgraph == NULL)
+    return NULL;
+
+  return _sysprof_callgraph_get_symbol_augment (self->callgraph, self->symbol);
+}
+
+/**
+ * sysprof_callgraph_symbol_get_callgraph:
+ * @self: a #SysprofCallgraphSymbol
+ *
+ * Gets the callgraph the symbol belongs to.
+ *
+ * Returns: (transfer none) (nullable): a #SysprofCallgraph, or %NULL
+ */
+SysprofCallgraph *
+sysprof_callgraph_symbol_get_callgraph (SysprofCallgraphSymbol *self)
+{
+  g_return_val_if_fail (SYSPROF_IS_CALLGRAPH_SYMBOL (self), NULL);
+
+  return self->callgraph;
+}
+
+struct _SysprofCallgraphSymbolListModel
+{
+  GObject parent_instance;
+  SysprofCallgraph *callgraph;
+};
+
+static guint
+sysprof_callgraph_symbol_list_model_get_n_items (GListModel *model)
+{
+  return SYSPROF_CALLGRAPH_SYMBOL (model)->callgraph->symbols->len;
+}
+
+static GType
+sysprof_callgraph_symbol_list_model_get_item_type (GListModel *model)
+{
+  return SYSPROF_TYPE_CALLGRAPH_SYMBOL;
+}
+
+static gpointer
+sysprof_callgraph_symbol_list_model_get_item (GListModel *model,
+                                              guint       position)
+{
+  SysprofCallgraphSymbol *self = SYSPROF_CALLGRAPH_SYMBOL (model);
+
+  if (position >= self->callgraph->symbols->len)
+    return NULL;
+
+  return _sysprof_callgraph_symbol_new (self->callgraph,
+                                        g_ptr_array_index (self->callgraph->symbols, position));
+}
+
+static void
+list_model_iface_init (GListModelInterface *iface)
+{
+  iface->get_n_items = sysprof_callgraph_symbol_list_model_get_n_items;
+  iface->get_item_type = sysprof_callgraph_symbol_list_model_get_item_type;
+  iface->get_item = sysprof_callgraph_symbol_list_model_get_item;
+}
+
+#define SYSPROF_TYPE_CALLGRAPH_SYMBOL_LIST_MODEL (sysprof_callgraph_symbol_list_model_get_type())
+G_DECLARE_FINAL_TYPE (SysprofCallgraphSymbolListModel, sysprof_callgraph_symbol_list_model, SYSPROF, CALLGRAPH_SYMBOL_LIST_MODEL, GObject)
+G_DEFINE_FINAL_TYPE_WITH_CODE (SysprofCallgraphSymbolListModel, sysprof_callgraph_symbol_list_model, G_TYPE_OBJECT,
+                               G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL, list_model_iface_init))
+
+static void
+sysprof_callgraph_symbol_list_model_class_init (SysprofCallgraphSymbolListModelClass *klass)
+{
+}
+
+static void
+sysprof_callgraph_symbol_list_model_init (SysprofCallgraphSymbolListModel *self)
+{
+}
+
+GListModel *
+_sysprof_callgraph_symbol_list_model_new (SysprofCallgraph *callgraph)
+{
+  SysprofCallgraphSymbolListModel *self;
+
+  g_return_val_if_fail (SYSPROF_IS_CALLGRAPH (callgraph), NULL);
+
+  self = g_object_new (SYSPROF_TYPE_CALLGRAPH_SYMBOL_LIST_MODEL, NULL);
+  self->callgraph = g_object_ref (callgraph);
+
+  return G_LIST_MODEL (self);
+}
+
+G_END_DECLS