Add initial infrastructure for Profiling

The EosProfileProbe API allows defining profiling probes that can be
used to efficiently measure the time spent in a critical section.

The Profiling API is meant to collect samples and generate a report
at the end of the lifetime of the process, either by printing out the
results once the process terminates; or by saving the raw data in a
binary file that can be loaded at a later date.

This profiling API is meant to be as close as possible to a zero cost
abstraction:

 - probes are only allocated if profiling is enabled
 - all profiling API is a no-op if profiling isn't enabled
 - the C API is meant to be easily tied to a scope, through the
   use of auto-cleanup macros provided by GLib

This allows projects using the Endless SDK to keep the profiling probes
in place, instead of conditionally compile them in.

https://phabricator.endlessm.com/T18514

1 files changed, 65 insertions, 0 deletions

diff --git a/endless/gvdb/gvdb-reader.h b/endless/gvdb/gvdb-reader.h
new file mode 100644
index 0000000..398824a
--- /dev/null
+++ b/endless/gvdb/gvdb-reader.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright © 2010 Codethink Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Allison Lortie <desrt@desrt.ca>
+ */
+
+#ifndef __gvdb_reader_h__
+#define __gvdb_reader_h__
+
+#include <glib.h>
+
+typedef struct _GvdbTable GvdbTable;
+
+G_BEGIN_DECLS
+
+G_GNUC_INTERNAL
+GvdbTable *             gvdb_table_new_from_bytes                       (GBytes       *bytes,
+                                                                         gboolean      trusted,
+                                                                         GError      **error);
+G_GNUC_INTERNAL
+GvdbTable *             gvdb_table_new                                  (const gchar  *filename,
+                                                                         gboolean      trusted,
+                                                                         GError      **error);
+G_GNUC_INTERNAL
+void                    gvdb_table_free                                 (GvdbTable    *table);
+G_GNUC_INTERNAL
+gchar **                gvdb_table_get_names                            (GvdbTable    *table,
+                                                                         gint         *length);
+G_GNUC_INTERNAL
+gchar **                gvdb_table_list                                 (GvdbTable    *table,
+                                                                         const gchar  *key);
+G_GNUC_INTERNAL
+GvdbTable *             gvdb_table_get_table                            (GvdbTable    *table,
+                                                                         const gchar  *key);
+G_GNUC_INTERNAL
+GVariant *              gvdb_table_get_raw_value                        (GvdbTable    *table,
+                                                                         const gchar  *key);
+G_GNUC_INTERNAL
+GVariant *              gvdb_table_get_value                            (GvdbTable    *table,
+                                                                         const gchar  *key);
+
+G_GNUC_INTERNAL
+gboolean                gvdb_table_has_value                            (GvdbTable    *table,
+                                                                         const gchar  *key);
+G_GNUC_INTERNAL
+gboolean                gvdb_table_is_valid                             (GvdbTable    *table);
+
+G_END_DECLS
+
+#endif /* __gvdb_reader_h__ */