X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=liblttng-ust%2Fltt-ring-buffer-metadata-client.h;h=dcbaacb61c1c1d583473ed367d4396e5de72bea9;hb=982052994af40833768fef0bd342a42a1775e572;hp=d1a83d5389e9a45ae1ffb468f56b4bb4b3cc82c0;hpb=69400ac4a4e6575f749c6326df7c2a2c8ac3bdc5;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 d1a83d53..dcbaacb6 100644
--- a/liblttng-ust/ltt-ring-buffer-metadata-client.h
+++ b/liblttng-ust/ltt-ring-buffer-metadata-client.h
@@ -16,7 +16,7 @@
 
 struct metadata_packet_header {
 	uint32_t magic;			/* 0x75D11D57 */
-	uint8_t  uuid[16];		/* Unique Universal Identifier */
+	uint8_t  uuid[LTTNG_UST_UUID_LEN]; /* Unique Universal Identifier */
 	uint32_t checksum;		/* 0 if unused */
 	uint32_t content_size;		/* in bits */
 	uint32_t packet_size;		/* in bits */
@@ -34,8 +34,7 @@ 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 +50,7 @@ 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 +76,7 @@ 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)
 {
@@ -88,10 +87,9 @@ static void client_buffer_begin(struct lttng_ust_lib_ring_buffer *buf, u64 tsc,
 				subbuf_idx * chan->backend.subbuf_size,
 				handle);
 	struct ltt_channel *ltt_chan = channel_get_private(chan);
-	struct ltt_session *session = ltt_chan->session;
 
 	header->magic = TSDL_MAGIC_NUMBER;
-	memcpy(header->uuid, session->uuid, sizeof(session->uuid));
+	memcpy(header->uuid, ltt_chan->uuid, sizeof(ltt_chan->uuid));
 	header->checksum = 0;		/* 0 if unused */
 	header->content_size = 0xFFFFFFFF; /* in bits, for debugging */
 	header->packet_size = 0xFFFFFFFF;  /* in bits, for debugging */
@@ -107,7 +105,7 @@ 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)
 {
@@ -158,23 +156,35 @@ static const struct lttng_ust_lib_ring_buffer_config client_config = {
 	.oops = RING_BUFFER_OOPS_CONSISTENCY,
 	.ipi = RING_BUFFER_NO_IPI_BARRIER,
 	.wakeup = RING_BUFFER_WAKEUP_BY_WRITER,
+	.client_type = LTTNG_CLIENT_TYPE,
 };
 
+const struct lttng_ust_lib_ring_buffer_client_cb *LTTNG_CLIENT_CALLBACKS = &client_config.cb;
+
 static
 struct ltt_channel *_channel_create(const char *name,
-				struct ltt_channel *ltt_chan, void *buf_addr,
+				void *buf_addr,
 				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)
 {
-	ltt_chan->handle = channel_create(&client_config, name, ltt_chan, buf_addr,
-			      subbuf_size, num_subbuf, switch_timer_interval,
-			      read_timer_interval, shm_fd, wait_fd,
-			      memory_map_size);
-	if (!ltt_chan->handle)
+	void *priv;
+	struct ltt_channel *ltt_chan = NULL;
+	struct lttng_ust_shm_handle *handle;
+
+	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);
+	if (!handle)
 		return NULL;
+	ltt_chan = priv;
+	ltt_chan->handle = handle;
 	ltt_chan->chan = shmp(ltt_chan->handle, ltt_chan->handle->chan);
 	return ltt_chan;
 }
@@ -188,8 +198,8 @@ 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;
 
@@ -273,8 +283,8 @@ 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,