bin: compile lttng-sessiond as C++

[lttng-tools.git] / include / lttng / location-internal.h

diff --git a/include/lttng/location-internal.h b/include/lttng/location-internal.h
index dc7137337641ba35417f645fd4c86d3c69428c4f..9eafd471a2d5273cb4aa2273cfc304ce8f9f0b02 100644 (file)
--- a/include/lttng/location-internal.h
+++ b/include/lttng/location-internal.h
@@ -1,27 +1,32 @@
 /*
- * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
  *
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License, version 2.1 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: LGPL-2.1-only
  *
- * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #ifndef LTTNG_LOCATION_INTERNAL_H
 #define LTTNG_LOCATION_INTERNAL_H
 
 #include <lttng/location.h>
+#include <common/dynamic-buffer.h>
+#include <common/buffer-view.h>
 #include <common/macros.h>
+#include <sys/types.h>
+#include <urcu/ref.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
 
+/*
+ * The public API assumes that trace archive locations are always
+ * provided as "constant". This means that the user of liblttng-ctl never
+ * has to destroy a trace archive location. Hence, users of liblttng-ctl
+ * have no visibility of the reference counting of archive locations.
+ */
 struct lttng_trace_archive_location {
+       struct urcu_ref ref;
        enum lttng_trace_archive_location_type type;
        union {
                struct {
@@ -38,19 +43,66 @@ struct lttng_trace_archive_location {
        } types;
 };
 
-LTTNG_HIDDEN
+struct lttng_trace_archive_location_comm {
+       /* A value from enum lttng_trace_archive_location_type */
+       int8_t type;
+       union {
+               struct {
+                       /* Includes the trailing \0. */
+                       uint32_t absolute_path_len;
+               } LTTNG_PACKED local;
+               struct {
+                       /* Includes the trailing \0. */
+                       uint32_t hostname_len;
+                       /*
+                        * A value from
+                        * enum lttng_trace_archive_location_relay_protocol_type.
+                        */
+                       int8_t protocol;
+                       struct {
+                               uint16_t control, data;
+                       } ports;
+                       /* Includes the trailing \0. */
+                       uint32_t relative_path_len;
+               } LTTNG_PACKED relay;
+       } LTTNG_PACKED types;
+       /*
+        * Payload is composed of:
+        * - LTTNG_TRACE_ARCHIVE_LOCATION_TYPE_LOCAL
+        *   - absolute path, including \0
+        * - LTTNG_TRACE_ARCHIVE_LOCATION_TYPE_RELAY
+        *   - hostname, including \0
+        *   - relative path, including \0
+        */
+       char payload[];
+} LTTNG_PACKED;
+
+
 struct lttng_trace_archive_location *lttng_trace_archive_location_local_create(
                const char *path);
 
-LTTNG_HIDDEN
 struct lttng_trace_archive_location *lttng_trace_archive_location_relay_create(
                const char *host,
                enum lttng_trace_archive_location_relay_protocol_type protocol,
                uint16_t control_port, uint16_t data_port,
                const char *relative_path);
 
-LTTNG_HIDDEN
-void lttng_trace_archive_location_destroy(
+ssize_t lttng_trace_archive_location_create_from_buffer(
+               const struct lttng_buffer_view *buffer,
+               struct lttng_trace_archive_location **location);
+
+ssize_t lttng_trace_archive_location_serialize(
+               const struct lttng_trace_archive_location *location,
+               struct lttng_dynamic_buffer *buffer);
+
+void lttng_trace_archive_location_get(
+               struct lttng_trace_archive_location *location);
+
+void lttng_trace_archive_location_put(
                struct lttng_trace_archive_location *location);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* LTTNG_LOCATION_INTERNAL_H */