X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fust-app.h;h=e8bb9a980ab1cf8f122016405638c8735341cfdb;hp=906a6a209b1e63eca442e438fbb76497d1937775;hb=ffe600149a7608221985751e1bf293234bf2545c;hpb=d14d33bf091e72b23b1f90ea18a0a01bed098b76

diff --git a/src/bin/lttng-sessiond/ust-app.h b/src/bin/lttng-sessiond/ust-app.h
index 906a6a209..e8bb9a980 100644
--- a/src/bin/lttng-sessiond/ust-app.h
+++ b/src/bin/lttng-sessiond/ust-app.h
@@ -20,16 +20,26 @@
 
 #include <stdint.h>
 
+#include <common/compat/uuid.h>
 #include "trace-ust.h"
 
 /* lttng-ust supported version. */
 #define LTTNG_UST_COMM_MAJOR          2	/* comm protocol major version */
-#define UST_APP_MAJOR_VERSION         2 /* UST version supported */
+#define UST_APP_MAJOR_VERSION         3 /* Internal UST version supported */
 
 #define UST_APP_EVENT_LIST_SIZE 32
 
+struct lttng_filter_bytecode;
+struct lttng_ust_filter_bytecode;
+
 extern int ust_consumerd64_fd, ust_consumerd32_fd;
 
+struct ust_app_ht_key {
+	const char *name;
+	const struct lttng_ust_filter_bytecode *filter;
+	enum lttng_ust_loglevel_type loglevel;
+};
+
 /*
  * Application registration data structure.
  */
@@ -45,16 +55,21 @@ struct ust_register_msg {
 };
 
 /*
- * Global applications HT used by the session daemon.
+ * Global applications HT used by the session daemon. This table is indexed by
+ * PID using the pid_n node and pid value of an ust_app.
  */
 struct lttng_ht *ust_app_ht;
 
-struct lttng_ht *ust_app_sock_key_map;
+/*
+ * Global applications HT used by the session daemon. This table is indexed by
+ * socket using the sock_n node and sock value of an ust_app.
+ */
+struct lttng_ht *ust_app_ht_by_sock;
 
-struct ust_app_key {
-	pid_t pid;
-	int sock;
-	struct lttng_ht_node_ulong node;
+/* Stream list containing ust_app_stream. */
+struct ust_app_stream_list {
+	unsigned int count;
+	struct cds_list_head head;
 };
 
 struct ust_app_ctx {
@@ -70,17 +85,35 @@ struct ust_app_event {
 	struct lttng_ust_object_data *obj;
 	struct lttng_ust_event attr;
 	char name[LTTNG_UST_SYM_NAME_LEN];
-	struct lttng_ht *ctx;
 	struct lttng_ht_node_str node;
+	struct lttng_ust_filter_bytecode *filter;
+};
+
+struct ust_app_stream {
+	int handle;
+	char pathname[PATH_MAX];
+	/* Format is %s_%d respectively channel name and CPU number. */
+	char name[DEFAULT_STREAM_NAME_LEN];
+	struct lttng_ust_object_data *obj;
+	/* Using a list of streams to keep order. */
+	struct cds_list_head list;
+	struct ustctl_consumer_stream *ustream;
 };
 
 struct ust_app_channel {
 	int enabled;
 	int handle;
+	/* Channel and streams were sent to the UST tracer. */
+	int is_sent;
+	/* Unique key used to identify the channel on the consumer side. */
+	unsigned long key;
+	/* Number of stream that this channel is expected to receive. */
+	unsigned int expected_stream_count;
 	char name[LTTNG_UST_SYM_NAME_LEN];
-	struct lttng_ust_channel attr;
 	struct lttng_ust_object_data *obj;
-	struct ltt_ust_stream_list streams;
+	struct ustctl_consumer_channel_attr attr;
+	struct ustctl_consumer_channel *channel;
+	struct ust_app_stream_list streams;
 	struct lttng_ht *ctx;
 	struct lttng_ht *events;
 	struct lttng_ht_node_str node;
@@ -92,13 +125,16 @@ struct ust_app_session {
 	int started;  /* allows detection of start vs restart. */
 	int handle;   /* used has unique identifier for app session */
 	int id;       /* session unique identifier */
-	struct ltt_ust_metadata *metadata;
+	struct ust_app_channel *metadata;
 	struct lttng_ht *channels; /* Registered channels */
 	struct lttng_ht_node_ulong node;
 	char path[PATH_MAX];
 	/* UID/GID of the user owning the session */
 	uid_t uid;
 	gid_t gid;
+	struct cds_list_head teardown_node;
+	/* Universal unique identifier used by the tracer. */
+	unsigned char uuid[UUID_STR_LEN];
 };
 
 /*
@@ -106,6 +142,8 @@ struct ust_app_session {
  * and a linked list is kept of all running traceable app.
  */
 struct ust_app {
+	int sock;
+	pid_t pid;
 	pid_t ppid;
 	uid_t uid;           /* User ID that owns the apps */
 	gid_t gid;           /* Group ID that owns the apps */
@@ -118,8 +156,18 @@ struct ust_app {
 	uint32_t v_minor;    /* Verion minor number */
 	char name[17];       /* Process name (short) */
 	struct lttng_ht *sessions;
-	struct lttng_ht_node_ulong node;
-	struct ust_app_key key;
+	struct lttng_ht_node_ulong pid_n;
+	struct lttng_ht_node_ulong sock_n;
+	/*
+	 * This is a list of ust app session that, once the app is going into
+	 * teardown mode, in the RCU call, each node in this list is removed and
+	 * deleted.
+	 *
+	 * Element of the list are added when an application unregisters after each
+	 * ht_del of ust_app_session associated to this app. This list is NOT used
+	 * when a session is destroyed.
+	 */
+	struct cds_list_head teardown_head;
 };
 
 #ifdef HAVE_LIBLTTNG_UST_CTL
@@ -136,9 +184,9 @@ int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app);
 int ust_app_stop_trace(struct ltt_ust_session *usess, struct ust_app *app);
 int ust_app_start_trace_all(struct ltt_ust_session *usess);
 int ust_app_stop_trace_all(struct ltt_ust_session *usess);
-int ust_app_destroy_trace(struct ltt_ust_session *usess, struct ust_app *app);
 int ust_app_destroy_trace_all(struct ltt_ust_session *usess);
 int ust_app_list_events(struct lttng_event **events);
+int ust_app_list_event_fields(struct lttng_event_field **fields);
 int ust_app_create_channel_glb(struct ltt_ust_session *usess,
 		struct ltt_ust_channel *uchan);
 int ust_app_create_event_glb(struct ltt_ust_session *usess,
@@ -161,9 +209,6 @@ int ust_app_enable_all_event_glb(struct ltt_ust_session *usess,
 		struct ltt_ust_channel *uchan);
 int ust_app_disable_event_glb(struct ltt_ust_session *usess,
 		struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
-int ust_app_add_ctx_event_glb(struct ltt_ust_session *usess,
-		struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
-		struct ltt_ust_context *uctx);
 int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
 		struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx);
 void ust_app_global_update(struct ltt_ust_session *usess, int sock);
@@ -174,6 +219,7 @@ struct lttng_ht *ust_app_get_ht(void);
 struct ust_app *ust_app_find_by_pid(pid_t pid);
 int ust_app_validate_version(int sock);
 int ust_app_calibrate_glb(struct lttng_ust_calibrate *calibrate);
+struct ust_app_stream *ust_app_alloc_stream(void);
 
 #else /* HAVE_LIBLTTNG_UST_CTL */
 
@@ -200,7 +246,12 @@ int ust_app_stop_trace_all(struct ltt_ust_session *usess)
 static inline
 int ust_app_list_events(struct lttng_event **events)
 {
-	return 0;
+	return -ENOSYS;
+}
+static inline
+int ust_app_list_event_fields(struct lttng_event_field **fields)
+{
+	return -ENOSYS;
 }
 static inline
 int ust_app_register(struct ust_register_msg *msg, int sock)
@@ -303,13 +354,6 @@ int ust_app_enable_event_glb(struct ltt_ust_session *usess,
 	return 0;
 }
 static inline
-int ust_app_add_ctx_event_glb(struct ltt_ust_session *usess,
-		struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
-		struct ltt_ust_context *uctx)
-{
-	return 0;
-}
-static inline
 int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
 		struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx)
 {