libsysprof-analyze: add address layout to contain mmap regions

src/libsysprof-analyze/meson.build

@@ -22,6 +22,7 @@ libsysprof_analyze_public_sources = [
 ]
 
 libsysprof_analyze_private_sources = [
+  'sysprof-address-layout.c',
   'sysprof-document-bitset-index.c',
   'sysprof-mapped-file.c',
   'sysprof-memory-map.c',

src/libsysprof-analyze/sysprof-address-layout-private.h

@@ -0,0 +1,39 @@
+/* sysprof-address-layout.h
+ *
+ * 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
+ */
+
+#pragma once
+
+#include <glib-object.h>
+
+#include "sysprof-document-mmap.h"
+
+G_BEGIN_DECLS
+
+#define SYSPROF_TYPE_ADDRESS_LAYOUT (sysprof_address_layout_get_type())
+
+G_DECLARE_FINAL_TYPE (SysprofAddressLayout, sysprof_address_layout, SYSPROF, ADDRESS_LAYOUT, GObject)
+
+SysprofAddressLayout *sysprof_address_layout_new    (void);
+void                  sysprof_address_layout_take   (SysprofAddressLayout *self,
+                                                     SysprofDocumentMmap  *map);
+SysprofDocumentMmap  *sysprof_address_layout_lookup (SysprofAddressLayout *self,
+                                                     SysprofAddress        address);
+
+G_END_DECLS

src/libsysprof-analyze/sysprof-address-layout.c

@@ -0,0 +1,126 @@
+/* sysprof-address-layout.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 "sysprof-address-layout-private.h"
+
+struct _SysprofAddressLayout
+{
+  GObject    parent_instance;
+  GSequence *mmaps;
+};
+
+G_DEFINE_FINAL_TYPE (SysprofAddressLayout, sysprof_address_layout, G_TYPE_OBJECT)
+
+static void
+sysprof_address_layout_finalize (GObject *object)
+{
+  SysprofAddressLayout *self = (SysprofAddressLayout *)object;
+
+  g_clear_pointer (&self->mmaps, g_sequence_free);
+
+  G_OBJECT_CLASS (sysprof_address_layout_parent_class)->finalize (object);
+}
+
+static void
+sysprof_address_layout_class_init (SysprofAddressLayoutClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = sysprof_address_layout_finalize;
+}
+
+static void
+sysprof_address_layout_init (SysprofAddressLayout *self)
+{
+  self->mmaps = g_sequence_new (g_object_unref);
+}
+
+SysprofAddressLayout *
+sysprof_address_layout_new (void)
+{
+  return g_object_new (SYSPROF_TYPE_ADDRESS_LAYOUT, NULL);
+}
+
+static int
+sysprof_address_layout_compare (gconstpointer a,
+                                gconstpointer b,
+                                gpointer      user_data)
+{
+  SysprofDocumentMmap *mmap_a = (SysprofDocumentMmap *)a;
+  SysprofDocumentMmap *mmap_b = (SysprofDocumentMmap *)b;
+  guint64 begin_a = sysprof_document_mmap_get_start_address (mmap_a);
+  guint64 begin_b = sysprof_document_mmap_get_start_address (mmap_b);
+
+  if (begin_a < begin_b)
+    return -1;
+
+  if (begin_a > begin_b)
+    return 1;
+
+  return 0;
+}
+
+void
+sysprof_address_layout_take (SysprofAddressLayout *self,
+                             SysprofDocumentMmap  *map)
+{
+  g_return_if_fail (SYSPROF_IS_ADDRESS_LAYOUT (self));
+  g_return_if_fail (SYSPROF_IS_DOCUMENT_MMAP (map));
+
+  g_sequence_insert_sorted (self->mmaps,
+                            map,
+                            sysprof_address_layout_compare,
+                            NULL);
+}
+
+static int
+sysprof_address_layout_lookup_func (gconstpointer a,
+                                    gconstpointer b,
+                                    gpointer      user_data)
+{
+  SysprofDocumentMmap *mmap_a = (SysprofDocumentMmap *)a;
+  const gint64 *addr = b;
+
+  if (*addr < sysprof_document_mmap_get_start_address (mmap_a))
+    return 1;
+
+  if (*addr >= sysprof_document_mmap_get_end_address (mmap_a))
+    return -1;
+
+  return 0;
+}
+
+SysprofDocumentMmap *
+sysprof_address_layout_lookup (SysprofAddressLayout *self,
+                               SysprofAddress        address)
+{
+  GSequenceIter *iter;
+
+  g_return_val_if_fail (SYSPROF_IS_ADDRESS_LAYOUT (self), NULL);
+
+  iter = g_sequence_lookup (self->mmaps,
+                            &address,
+                            sysprof_address_layout_lookup_func,
+                            NULL);
+
+  return iter ? g_sequence_get (iter) : NULL;
+}