build: rename all symbols to use sysprof_ as prefix

As we gain in usage, we need to be more careful about using a prefix
that will not collide with other symbols. So version 3 of our ABI will
change to using Sysprof/SYSPROF/sysprof as the various prefixes.

The soname/api version bump will happen later on this branch so that
things are easier to test up until then.

src/libsysprof/sysprof-symbol-dirs.c

@@ -0,0 +1,140 @@
+/* sysprof-symbol-dirs.c
+ *
+ * Copyright 2017-2019 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-symbol-dirs.h"
+
+static GPtrArray *sysprof_symbol_dirs;
+
+G_LOCK_DEFINE (sysprof_symbol_dirs);
+
+static GPtrArray *
+sysprof_get_symbol_dirs_locked (void)
+{
+  if (sysprof_symbol_dirs == NULL)
+    {
+      sysprof_symbol_dirs = g_ptr_array_new ();
+      g_ptr_array_add (sysprof_symbol_dirs, g_strdup ("/usr/lib/debug"));
+
+      /* Add path to host system if we have it */
+      if (g_file_test ("/.flatpak-info", G_FILE_TEST_EXISTS))
+        {
+          static gchar *tries[] = {
+            "/var/run/host/usr/lib/debug",
+          };
+
+          for (guint i = 0; i < G_N_ELEMENTS (tries); i++)
+            {
+              if (g_file_test (tries[i], G_FILE_TEST_EXISTS))
+                g_ptr_array_add (sysprof_symbol_dirs, g_strdup (tries[i]));
+            }
+        }
+    }
+
+  return sysprof_symbol_dirs;
+}
+
+void
+sysprof_symbol_dirs_add (const gchar *path)
+{
+  GPtrArray *ar;
+
+  G_LOCK (sysprof_symbol_dirs);
+
+  ar = sysprof_get_symbol_dirs_locked ();
+
+  for (guint i = 0; i < ar->len; i++)
+    {
+      const gchar *ele = g_ptr_array_index (ar, i);
+
+      if (g_strcmp0 (path, ele) == 0)
+        goto skip;
+    }
+
+  g_ptr_array_add (ar, g_strdup (path));
+
+skip:
+  G_UNLOCK (sysprof_symbol_dirs);
+}
+
+void
+sysprof_symbol_dirs_remove (const gchar *path)
+{
+  GPtrArray *ar;
+
+  G_LOCK (sysprof_symbol_dirs);
+
+  ar = sysprof_get_symbol_dirs_locked ();
+
+  for (guint i = 0; i < ar->len; i++)
+    {
+      const gchar *ele = g_ptr_array_index (ar, i);
+
+      if (g_strcmp0 (path, ele) == 0)
+        {
+          g_ptr_array_remove_index (ar, i);
+          break;
+        }
+    }
+
+  G_UNLOCK (sysprof_symbol_dirs);
+}
+
+/**
+ * sysprof_symbol_dirs_get_paths:
+ * @dir: the directory containing the library
+ * @name: the name of the file in @dir
+ *
+ * This function will build an array of files to look at to resolve the
+ * debug symbols for the file at path "dir/name".
+ *
+ * Returns: (transfer full): A #GStrv of possible paths.
+ */
+gchar **
+sysprof_symbol_dirs_get_paths (const gchar *dir,
+                          const gchar *name)
+{
+  GPtrArray *ret = g_ptr_array_new ();
+  GPtrArray *ar;
+
+  g_ptr_array_add (ret, g_build_filename (dir, name, NULL));
+
+  G_LOCK (sysprof_symbol_dirs);
+
+  ar = sysprof_get_symbol_dirs_locked ();
+
+  for (guint i = 0; i < ar->len; i++)
+    {
+      const gchar *ele = g_ptr_array_index (ar, i);
+
+      g_ptr_array_add (ret, g_build_filename (ele, name, NULL));
+      g_ptr_array_add (ret, g_build_filename (ele, dir, name, NULL));
+    }
+
+  g_ptr_array_add (ret, g_build_filename (dir, ".debug", name, NULL));
+  g_ptr_array_add (ret, g_build_filename (DEBUGDIR, dir, name, NULL));
+
+  G_UNLOCK (sysprof_symbol_dirs);
+
+  g_ptr_array_add (ret, NULL);
+
+  return (gchar **)g_ptr_array_free (ret, FALSE);
+}