X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=liblttng-ust%2Fltt-ring-buffer-metadata-client.h;h=1e18df9d33a14fa4dd3969faf5bd17f4d9d0477b;hb=69b8d2fae1590ec792409587123afa55b8959c07;hp=46aab3cce8d87d9300f2fcd032717e6a00cfd689;hpb=a3f61e7f689a5fc60b833a773f462989dc6cc78f;p=lttng-ust.git

diff --git a/liblttng-ust/ltt-ring-buffer-metadata-client.h b/liblttng-ust/ltt-ring-buffer-metadata-client.h
index 46aab3cc..1e18df9d 100644
--- a/liblttng-ust/ltt-ring-buffer-metadata-client.h
+++ b/liblttng-ust/ltt-ring-buffer-metadata-client.h
@@ -1,11 +1,23 @@
 /*
  * ltt-ring-buffer-client.h
  *
- * Copyright (C) 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
  * LTTng lib ring buffer client template.
  *
- * Dual LGPL v2.1/GPL v2 license.
+ * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@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 as published by the Free Software Foundation; only
+ * version 2.1 of the License.
+ *
+ * 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
  */
 
 #include <stdint.h>
@@ -34,8 +46,7 @@ struct metadata_record_header {
 
 static const struct lttng_ust_lib_ring_buffer_config client_config;
 
-static inline
-u64 lib_ring_buffer_clock_read(struct channel *chan)
+static inline uint64_t lib_ring_buffer_clock_read(struct channel *chan)
 {
 	return 0;
 }
@@ -51,7 +62,7 @@ unsigned char record_header_size(const struct lttng_ust_lib_ring_buffer_config *
 
 #include "../libringbuffer/api.h"
 
-static u64 client_ring_buffer_clock_read(struct channel *chan)
+static uint64_t client_ring_buffer_clock_read(struct channel *chan)
 {
 	return 0;
 }
@@ -77,7 +88,7 @@ static size_t client_packet_header_size(void)
 	return offsetof(struct metadata_packet_header, header_end);
 }
 
-static void client_buffer_begin(struct lttng_ust_lib_ring_buffer *buf, u64 tsc,
+static void client_buffer_begin(struct lttng_ust_lib_ring_buffer *buf, uint64_t tsc,
 				unsigned int subbuf_idx,
 				struct lttng_ust_shm_handle *handle)
 {
@@ -106,7 +117,7 @@ static void client_buffer_begin(struct lttng_ust_lib_ring_buffer *buf, u64 tsc,
  * offset is assumed to never be 0 here : never deliver a completely empty
  * subbuffer. data_size is between 1 and subbuf_size.
  */
-static void client_buffer_end(struct lttng_ust_lib_ring_buffer *buf, u64 tsc,
+static void client_buffer_end(struct lttng_ust_lib_ring_buffer *buf, uint64_t tsc,
 			      unsigned int subbuf_idx, unsigned long data_size,
 			      struct lttng_ust_shm_handle *handle)
 {
@@ -120,7 +131,11 @@ static void client_buffer_end(struct lttng_ust_lib_ring_buffer *buf, u64 tsc,
 
 	header->content_size = data_size * CHAR_BIT;		/* in bits */
 	header->packet_size = PAGE_ALIGN(data_size) * CHAR_BIT; /* in bits */
-	records_lost += lib_ring_buffer_get_records_lost_full(&client_config, buf);
+	/*
+	 * We do not care about the records lost count, because the metadata
+	 * channel waits and retry.
+	 */
+	(void) lib_ring_buffer_get_records_lost_full(&client_config, buf);
 	records_lost += lib_ring_buffer_get_records_lost_wrap(&client_config, buf);
 	records_lost += lib_ring_buffer_get_records_lost_big(&client_config, buf);
 	WARN_ON_ONCE(records_lost != 0);
@@ -168,8 +183,9 @@ struct ltt_channel *_channel_create(const char *name,
 				size_t subbuf_size, size_t num_subbuf,
 				unsigned int switch_timer_interval,
 				unsigned int read_timer_interval,
-				int *shm_fd, int *wait_fd,
-				uint64_t *memory_map_size)
+				int **shm_fd, int **wait_fd,
+				uint64_t **memory_map_size,
+				struct ltt_channel *chan_priv_init)
 {
 	void *priv;
 	struct ltt_channel *ltt_chan = NULL;
@@ -177,6 +193,7 @@ struct ltt_channel *_channel_create(const char *name,
 
 	handle = channel_create(&client_config, name,
 			&priv, __alignof__(*ltt_chan), sizeof(*ltt_chan),
+			chan_priv_init,
 			buf_addr, subbuf_size, num_subbuf,
 			switch_timer_interval, read_timer_interval,
 			shm_fd, wait_fd, memory_map_size);
@@ -197,8 +214,8 @@ void ltt_channel_destroy(struct ltt_channel *ltt_chan)
 static
 struct lttng_ust_lib_ring_buffer *ltt_buffer_read_open(struct channel *chan,
 					     struct lttng_ust_shm_handle *handle,
-					     int *shm_fd, int *wait_fd,
-					     uint64_t *memory_map_size)
+					     int **shm_fd, int **wait_fd,
+					     uint64_t **memory_map_size)
 {
 	struct lttng_ust_lib_ring_buffer *buf;
 
@@ -282,8 +299,8 @@ static
 int ltt_flush_buffer(struct channel *chan, struct lttng_ust_shm_handle *handle)
 {
 	struct lttng_ust_lib_ring_buffer *buf;
-	int shm_fd, wait_fd;
-	uint64_t memory_map_size;
+	int *shm_fd, *wait_fd;
+	uint64_t *memory_map_size;
 
 	buf = channel_get_ring_buffer(&client_config, chan,
 			0, handle, &shm_fd, &wait_fd,