Introduced a tracker for GObjects leaks.

1 files changed, 137 insertions, 0 deletions

diff --git a/src/gleak.c b/src/gleak.c
new file mode 100644
index 0000000..3212d9f
--- /dev/null
+++ b/src/gleak.c
@@ -0,0 +1,137 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * gleak.c - aide à la détection de fuites d'instances de GTypes
+ *
+ * Copyright (C) 2019 Cyrille Bagard
+ *
+ *  This file is part of Chrysalide.
+ *
+ *  Chrysalide 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.
+ *
+ *  Chrysalide 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 Chrysalide.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include "gleak.h"
+
+
+#include <glib-object.h>
+#include <malloc.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+
+#include "common/environment.h"
+
+
+
+#define DUMP_OPEN_MSG  "\n---------- GType instance leak dump ----------\n\n"
+#define DUMP_CLOSE_MSG "\n----------------------------------------------\n\n"
+
+
+
+/*  Parcourt l'arborescence des types à la recherche de fuites. */
+static void track_gtype_for_leak(GType, bool *);
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : root  = racine des types d'instance à retrouver.             *
+*                first = suivi des premières impressions. [OUT]               *
+*                                                                             *
+*  Description : Parcourt l'arborescence des types à la recherche de fuites.  *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void track_gtype_for_leak(GType root, bool *first)
+{
+    GType *children;                        /* Liste de tous les sous-types*/
+    guint count;                            /* Taille de cette liste       */
+    GType *iter;                            /* Boucle de parcours          */
+    int remaining;                          /* Nombre d'instances restantes*/
+
+    children = g_type_children(root, &count);
+
+    if (count == 0)
+    {
+        remaining = g_type_get_instance_count(root);
+
+        if (remaining > 0)
+        {
+            if (*first)
+            {
+                fprintf(stderr, DUMP_OPEN_MSG);
+                *first = false;
+            }
+
+            fprintf(stderr, "%s: %d\n", g_type_name(root), remaining);
+
+        }
+
+    }
+
+    else
+        for (iter = children; *iter != 0; iter++)
+            track_gtype_for_leak(*iter, first);
+
+    g_free(children);
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Affiche la liste des instances courantes restantes par type. *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+void dump_remaining_gtypes(void)
+{
+    char *debug;                            /* Conditions d'environnement  */
+    bool first;                             /* Première fois ?             */
+
+    debug = get_env_var("GOBJECT_DEBUG");
+
+    if (strstr(debug, "instance-count") == NULL)
+    {
+        fprintf(stderr, DUMP_OPEN_MSG);
+        fprintf(stderr, "The GOBJECT_DEBUG variable does not include instance-count.\n");
+        fprintf(stderr, "Exiting the dumping process...\n");
+        fprintf(stderr, DUMP_CLOSE_MSG);
+    }
+
+    else
+    {
+        first = true;
+
+        track_gtype_for_leak(G_TYPE_OBJECT, &first);
+
+        if (!first)
+            fprintf(stderr, DUMP_CLOSE_MSG);
+
+    }
+
+    free(debug);
+
+}