X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fust-app.h;h=6e6ff0203cdb9cc1ddf88a1d626f0cd96db5f033;hp=00d2d5ae402f5204ab9774bf03155eb48bc9f248;hb=36b588eddce05ef840bd247f6a58316925b9a0a2;hpb=d0b96690836f4b876096f3dc14801f8e25281a77

diff --git a/src/bin/lttng-sessiond/ust-app.h b/src/bin/lttng-sessiond/ust-app.h
index 00d2d5ae4..6e6ff0203 100644
--- a/src/bin/lttng-sessiond/ust-app.h
+++ b/src/bin/lttng-sessiond/ust-app.h
@@ -24,20 +24,26 @@
 #include "trace-ust.h"
 #include "ust-registry.h"
 
-/* lttng-ust supported version. */
-//#define LTTNG_UST_COMM_MAJOR          2	/* comm protocol major version */
-//#define UST_APP_MAJOR_VERSION         3 /* Internal UST version supported */
-
 #define UST_APP_EVENT_LIST_SIZE 32
 
-/* Process name (short). Extra for the NULL byte. */
-#define UST_APP_PROCNAME_LEN 	17
+/* Process name (short). */
+#define UST_APP_PROCNAME_LEN	16
 
 struct lttng_filter_bytecode;
 struct lttng_ust_filter_bytecode;
 
 extern int ust_consumerd64_fd, ust_consumerd32_fd;
 
+/*
+ * Object used to close the notify socket in a call_rcu(). Since the
+ * application might not be found, we need an independant object containing the
+ * notify socket fd.
+ */
+struct ust_app_notify_sock_obj {
+	int fd;
+	struct rcu_head head;
+};
+
 struct ust_app_ht_key {
 	const char *name;
 	const struct lttng_ust_filter_bytecode *filter;
@@ -124,7 +130,9 @@ struct ust_app_channel {
 	/* 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;
+	uint64_t key;
+	/* Id of the tracing channel set on creation. */
+	uint64_t tracing_channel_id;
 	/* Number of stream that this channel is expected to receive. */
 	unsigned int expected_stream_count;
 	char name[LTTNG_UST_SYM_NAME_LEN];
@@ -135,10 +143,8 @@ struct ust_app_channel {
 	struct ust_app_session *session;
 	struct lttng_ht *ctx;
 	struct lttng_ht *events;
-	/*
-	 * UST event registry. The ONLY writer is the application thread.
-	 */
-	struct ust_registry_channel registry;
+	uint64_t tracefile_size;
+	uint64_t tracefile_count;
 	/*
 	 * Node indexed by channel name in the channels' hash table of a session.
 	 */
@@ -148,6 +154,8 @@ struct ust_app_channel {
 	 * ust_objd hash table in the ust_app object.
 	 */
 	struct lttng_ht_node_ulong ust_objd_node;
+	/* For delayed reclaim */
+	struct rcu_head rcu_head;
 };
 
 struct ust_app_session {
@@ -162,16 +170,33 @@ struct ust_app_session {
 	/* started: has the session been in started state at any time ? */
 	int started;  /* allows detection of start vs restart. */
 	int handle;   /* used has unique identifier for app session */
-	int id;       /* session unique identifier */
-	struct ust_app_channel *metadata;
-	struct ust_registry_session registry;
+
+	/*
+	 * Tracing session ID. Multiple ust app session can have the same tracing
+	 * session id making this value NOT unique to the object.
+	 */
+	int tracing_id;
+	uint64_t id;	/* Unique session identifier */
 	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/GID of the application owning the session */
 	uid_t uid;
 	gid_t gid;
+	/* Effective UID and GID. Same as the tracing session. */
+	uid_t euid;
+	gid_t egid;
 	struct cds_list_head teardown_node;
+	/*
+	 * Once at least *one* session is created onto the application, the
+	 * corresponding consumer is set so we can use it on unregistration.
+	 */
+	struct consumer_output *consumer;
+	enum lttng_buffer_type buffer_type;
+	/* ABI of the session. Same value as the application. */
+	uint32_t bits_per_long;
+	/* For delayed reclaim */
+	struct rcu_head rcu_head;
 };
 
 /*
@@ -201,7 +226,10 @@ struct ust_app {
 	struct lttng_ust_tracer_version version;
 	uint32_t v_major;    /* Version major number */
 	uint32_t v_minor;    /* Version minor number */
-	char name[UST_APP_PROCNAME_LEN];
+	/* Extra for the NULL byte. */
+	char name[UST_APP_PROCNAME_LEN + 1];
+	/* Type of buffer this application uses. */
+	enum lttng_buffer_type buffer_type;
 	struct lttng_ht *sessions;
 	struct lttng_ht_node_ulong pid_n;
 	struct lttng_ht_node_ulong sock_n;
@@ -233,8 +261,6 @@ int ust_app_register_done(int sock)
 int ust_app_version(struct ust_app *app);
 void ust_app_unregister(int sock);
 unsigned long ust_app_list_count(void);
-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_all(struct ltt_ust_session *usess);
@@ -276,6 +302,9 @@ int ust_app_recv_registration(int sock, struct ust_register_msg *msg);
 int ust_app_recv_notify(int sock);
 void ust_app_add(struct ust_app *app);
 struct ust_app *ust_app_create(struct ust_register_msg *msg, int sock);
+void ust_app_notify_sock_unregister(int sock);
+ssize_t ust_app_push_metadata(struct ust_registry_session *registry,
+		struct consumer_socket *socket, int send_zero_data);
 
 #else /* HAVE_LIBLTTNG_UST_CTL */
 
@@ -458,6 +487,16 @@ static inline
 void ust_app_add(struct ust_app *app)
 {
 }
+static inline
+void ust_app_notify_sock_unregister(int sock)
+{
+}
+static inline
+ssize_t ust_app_push_metadata(struct ust_registry_session *registry,
+		struct consumer_socket *socket, int send_zero_data)
+{
+	return 0;
+}
 
 #endif /* HAVE_LIBLTTNG_UST_CTL */