1 files changed, 149 insertions, 0 deletions

diff --git a/src/service/statistics/statistics.h b/src/service/statistics/statistics.h
new file mode 100644
index 000000000..6eb75cc99
--- /dev/null
+++ b/src/service/statistics/statistics.h
@@ -0,0 +1,149 @@
+/*
+     This file is part of GNUnet.
+     Copyright (C) 2001-2014 GNUnet e.V.
+
+     GNUnet is free software: you can redistribute it and/or modify it
+     under the terms of the GNU Affero General Public License as published
+     by the Free Software Foundation, either version 3 of the License,
+     or (at your option) any later version.
+
+     GNUnet 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
+     Affero General Public License for more details.
+
+     You should have received a copy of the GNU Affero General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+     SPDX-License-Identifier: AGPL3.0-or-later
+ */
+
+/**
+ * @author Christian Grothoff
+ * @file statistics/statistics.h
+ */
+#ifndef STATISTICS_H
+#define STATISTICS_H
+
+#include "gnunet_common.h"
+
+
+GNUNET_NETWORK_STRUCT_BEGIN
+
+/**
+ * Statistics message. Contains how long the system is up
+ * and one value.
+ *
+ * The struct is be followed by the service name and
+ * name of the statistic, both 0-terminated.
+ */
+struct GNUNET_STATISTICS_ReplyMessage
+{
+  /**
+   * Type:  GNUNET_MESSAGE_TYPE_STATISTICS_VALUE
+   */
+  struct GNUNET_MessageHeader header;
+
+  /**
+   * Unique numerical identifier for the value (will
+   * not change during the same client-session).  Highest
+   * bit will be set for persistent values (see
+   * #GNUNET_STATISTICS_PERSIST_BIT).
+   */
+  uint32_t uid GNUNET_PACKED;
+
+  /**
+   * The value.
+   */
+  uint64_t value GNUNET_PACKED;
+};
+
+/**
+ * Flag for the `struct GNUNET_STATISTICS_ReplyMessage` UID only.
+ * Note that other messages use #GNUNET_STATISTICS_SETFLAG_PERSISTENT.
+ */
+#define GNUNET_STATISTICS_PERSIST_BIT ((uint32_t) (1LLU << 31))
+
+/**
+ * The value being set is an absolute change.
+ */
+#define GNUNET_STATISTICS_SETFLAG_ABSOLUTE 0
+
+/**
+ * The value being set is a relative change.
+ */
+#define GNUNET_STATISTICS_SETFLAG_RELATIVE 1
+
+/**
+ * The value being set is to be persistent (note that
+ * this bit can be combined with #GNUNET_STATISTICS_SETFLAG_RELATIVE).
+ * This value must not be used for the `uid` member of
+ * `struct GNUNET_STATISTICS_ReplyMessage`!
+ */
+#define GNUNET_STATISTICS_SETFLAG_PERSISTENT 2
+
+
+/**
+ * Message to set a statistic.  Followed
+ * by the subsystem name and the name of
+ * the statistic (each 0-terminated).
+ */
+struct GNUNET_STATISTICS_SetMessage
+{
+  /**
+   * Type: #GNUNET_MESSAGE_TYPE_STATISTICS_SET
+   */
+  struct GNUNET_MessageHeader header;
+
+  /**
+   * 0 for absolute value, 1 for relative value; 2 to make persistent
+   * (see GNUNET_STATISTICS_SETFLAG_*).
+   */
+  uint32_t flags GNUNET_PACKED;
+
+  /**
+   * Value. Note that if this is a relative value, it will
+   * be signed even though the type given here is unsigned.
+   */
+  uint64_t value GNUNET_PACKED;
+};
+
+
+/**
+ * Message transmitted if a watched value changes.
+ */
+struct GNUNET_STATISTICS_WatchValueMessage
+{
+  /**
+   * Type: #GNUNET_MESSAGE_TYPE_STATISTICS_WATCH_VALUE
+   */
+  struct GNUNET_MessageHeader header;
+
+  /**
+   * 0 for absolute value, 1 for relative value; 2 to make persistent
+   * (see GNUNET_STATISTICS_SETFLAG_*).
+   */
+  uint32_t flags GNUNET_PACKED;
+
+  /**
+   * Unique watch identification number (watch
+   * requests are enumerated in the order they
+   * are received, the first request having
+   * a wid of zero).
+   */
+  uint32_t wid GNUNET_PACKED;
+
+  /**
+   * Reserved (always 0).
+   */
+  uint32_t reserved GNUNET_PACKED;
+
+  /**
+   * Value. Note that if this is a relative value, it will
+   * be signed even though the type given here is unsigned.
+   */
+  uint64_t value GNUNET_PACKED;
+};
+GNUNET_NETWORK_STRUCT_END
+
+#endif