X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fconsumer%2Fconsumer-metadata-cache.h;h=a442dcaf25fe72f1a9fa08d4bf85bca145d95030;hp=8ce7f30b19ee7d795af047ca35f78fbf9b7f3ecb;hb=e2d1190b9ea09c54e5d7373643d62e2034bc1531;hpb=c8fea79c745d42ea8143b7020ae11b4fc2da0d8a

diff --git a/src/common/consumer/consumer-metadata-cache.h b/src/common/consumer/consumer-metadata-cache.h
index 8ce7f30b1..a442dcaf2 100644
--- a/src/common/consumer/consumer-metadata-cache.h
+++ b/src/common/consumer/consumer-metadata-cache.h
@@ -1,19 +1,9 @@
 /*
- * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com>
- *                      David Goulet <dgoulet@efficios.com>
+ * Copyright (C) 2013 Julien Desfossez <jdesfossez@efficios.com>
+ * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
  *
- * 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, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #ifndef CONSUMER_METADATA_CACHE_H
@@ -24,6 +14,10 @@
 struct consumer_metadata_cache {
 	char *data;
 	uint64_t cache_alloc_size;
+	/*
+	 * Current version of the metadata cache.
+	 */
+	uint64_t version;
 	/*
 	 * The upper-limit of data written inside the buffer.
 	 *
@@ -42,10 +36,12 @@ struct consumer_metadata_cache {
 };
 
 int consumer_metadata_cache_write(struct lttng_consumer_channel *channel,
-		unsigned int offset, unsigned int len, char *data);
+		unsigned int offset, unsigned int len, uint64_t version,
+		char *data);
 int consumer_metadata_cache_allocate(struct lttng_consumer_channel *channel);
 void consumer_metadata_cache_destroy(struct lttng_consumer_channel *channel);
 int consumer_metadata_cache_flushed(struct lttng_consumer_channel *channel,
 		uint64_t offset, int timer);
+int consumer_metadata_wakeup_pipe(const struct lttng_consumer_channel *channel);
 
 #endif /* CONSUMER_METADATA_CACHE_H */