X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fust-app.h;h=a5dc0d300c51a790bd762d85307829bd50389a44;hp=255a75cf75ee18f59e599a8d253087946b2bf3ac;hb=d5a1b7aa06b4c924b1cd30623758343c74ecab5c;hpb=b34cbebfc8e60a678782bcffdf4ff8fc12de037e

diff --git a/src/bin/lttng-sessiond/ust-app.h b/src/bin/lttng-sessiond/ust-app.h
index 255a75cf7..a5dc0d300 100644
--- a/src/bin/lttng-sessiond/ust-app.h
+++ b/src/bin/lttng-sessiond/ust-app.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2016 - Jérémie Galarneau <jeremie.galarneau@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,
@@ -15,14 +16,16 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#ifndef _LTT_UST_APP_H 
+#ifndef _LTT_UST_APP_H
 #define _LTT_UST_APP_H
 
 #include <stdint.h>
 
 #include <common/compat/uuid.h>
+
 #include "trace-ust.h"
 #include "ust-registry.h"
+#include "session.h"
 
 #define UST_APP_EVENT_LIST_SIZE 32
 
@@ -46,8 +49,9 @@ struct ust_app_notify_sock_obj {
 
 struct ust_app_ht_key {
 	const char *name;
-	const struct lttng_ust_filter_bytecode *filter;
-	enum lttng_ust_loglevel_type loglevel;
+	const struct lttng_filter_bytecode *filter;
+	enum lttng_ust_loglevel_type loglevel_type;
+	const struct lttng_event_exclusion *exclusion;
 };
 
 /*
@@ -82,6 +86,8 @@ struct lttng_ht *ust_app_ht;
 /*
  * 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.
+ *
+ * The 'sock' in question here is the 'command' socket.
  */
 struct lttng_ht *ust_app_ht_by_sock;
 
@@ -99,9 +105,10 @@ struct ust_app_stream_list {
 
 struct ust_app_ctx {
 	int handle;
-	struct lttng_ust_context ctx;
+	struct lttng_ust_context_attr ctx;
 	struct lttng_ust_object_data *obj;
 	struct lttng_ht_node_ulong node;
+	struct cds_list_head list;
 };
 
 struct ust_app_event {
@@ -111,7 +118,8 @@ struct ust_app_event {
 	struct lttng_ust_event attr;
 	char name[LTTNG_UST_SYM_NAME_LEN];
 	struct lttng_ht_node_str node;
-	struct lttng_ust_filter_bytecode *filter;
+	struct lttng_filter_bytecode *filter;
+	struct lttng_event_exclusion *exclusion;
 };
 
 struct ust_app_stream {
@@ -129,7 +137,11 @@ struct ust_app_channel {
 	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. */
+	/*
+	 * Unique key used to identify the channel on the consumer side.
+	 * 0 is a reserved 'invalid' value used to indicate that the consumer
+	 * does not know about this channel (i.e. an error occured).
+	 */
 	uint64_t key;
 	/* Id of the tracing channel set on creation. */
 	uint64_t tracing_channel_id;
@@ -141,10 +153,18 @@ struct ust_app_channel {
 	struct ust_app_stream_list streams;
 	/* Session pointer that owns this object. */
 	struct ust_app_session *session;
+	/*
+	 * Contexts are kept in a hash table for fast lookup and in an ordered list
+	 * so we are able to enable them on the tracer side in the same order the
+	 * user added them.
+	 */
 	struct lttng_ht *ctx;
+	struct cds_list_head ctx_list;
+
 	struct lttng_ht *events;
 	uint64_t tracefile_size;
 	uint64_t tracefile_count;
+	uint64_t monitor_timer_interval;
 	/*
 	 * Node indexed by channel name in the channels' hash table of a session.
 	 */
@@ -154,6 +174,8 @@ 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 {
@@ -169,14 +191,21 @@ struct ust_app_session {
 	int started;  /* allows detection of start vs restart. */
 	int handle;   /* used has unique identifier for app session */
 
+	bool deleted;	/* Session deleted flag. Check with lock held. */
+
 	/*
 	 * 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 tracing_id;
 	uint64_t id;	/* Unique session identifier */
 	struct lttng_ht *channels; /* Registered channels */
-	struct lttng_ht_node_ulong node;
+	struct lttng_ht_node_u64 node;
+	/*
+	 * Node indexed by UST session object descriptor (handle). Stored in the
+	 * ust_sessions_objd hash table in the ust_app object.
+	 */
+	struct lttng_ht_node_ulong ust_objd_node;
 	char path[PATH_MAX];
 	/* UID/GID of the application owning the session */
 	uid_t uid;
@@ -193,6 +222,17 @@ struct ust_app_session {
 	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;
+	/* If the channel's streams have to be outputed or not. */
+	unsigned int output_traces;
+	unsigned int live_timer_interval;	/* usec */
+
+	/* Metadata channel attributes. */
+	struct ustctl_consumer_channel_attr metadata_attr;
+
+	char root_shm_path[PATH_MAX];
+	char shm_path[PATH_MAX];
 };
 
 /*
@@ -201,6 +241,8 @@ struct ust_app_session {
  */
 struct ust_app {
 	int sock;
+	pthread_mutex_t sock_lock;	/* Protects sock protocol. */
+
 	int notify_sock;
 	pid_t pid;
 	pid_t ppid;
@@ -244,19 +286,26 @@ struct ust_app {
 	 * Hash table containing ust_app_channel indexed by channel objd.
 	 */
 	struct lttng_ht *ust_objd;
+	/*
+	 * Hash table containing ust_app_session indexed by objd.
+	 */
+	struct lttng_ht *ust_sessions_objd;
+
+	/*
+	 * If this application is of the agent domain and this is non negative then
+	 * a lookup MUST be done to acquire a read side reference to the
+	 * corresponding agent app object. If the lookup fails, this should be set
+	 * to a negative value indicating that the agent application is gone.
+	 */
+	int agent_app_sock;
 };
 
 #ifdef HAVE_LIBLTTNG_UST_CTL
 
 int ust_app_register(struct ust_register_msg *msg, int sock);
-static inline
-int ust_app_register_done(int sock)
-{
-	return ustctl_register_done(sock);
-}
+int ust_app_register_done(struct ust_app *app);
 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_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);
@@ -266,9 +315,6 @@ 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,
 		struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
-int ust_app_disable_event_pid(struct ltt_ust_session *usess,
-		struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
-		pid_t pid);
 int ust_app_enable_event_pid(struct ltt_ust_session *usess,
 		struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
 		pid_t pid);
@@ -278,21 +324,18 @@ int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
 		struct ltt_ust_channel *uchan);
 int ust_app_enable_event_glb(struct ltt_ust_session *usess,
 		struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
-int ust_app_disable_all_event_glb(struct ltt_ust_session *usess,
-		struct ltt_ust_channel *uchan);
 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_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);
+void ust_app_global_update(struct ltt_ust_session *usess, struct ust_app *app);
+void ust_app_global_update_all(struct ltt_ust_session *usess);
 
 void ust_app_clean_list(void);
-void ust_app_ht_alloc(void);
-struct lttng_ht *ust_app_get_ht(void);
+int ust_app_ht_alloc(void);
 struct ust_app *ust_app_find_by_pid(pid_t pid);
-int ust_app_calibrate_glb(struct lttng_ust_calibrate *calibrate);
 struct ust_app_stream *ust_app_alloc_stream(void);
 int ust_app_recv_registration(int sock, struct ust_register_msg *msg);
 int ust_app_recv_notify(int sock);
@@ -301,6 +344,29 @@ 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);
+void ust_app_destroy(struct ust_app *app);
+int ust_app_snapshot_record(struct ltt_ust_session *usess,
+		struct snapshot_output *output, int wait,
+		uint64_t nb_packets_per_stream);
+uint64_t ust_app_get_size_one_more_packet_per_stream(
+		struct ltt_ust_session *usess, uint64_t cur_nr_packets);
+struct ust_app *ust_app_find_by_sock(int sock);
+int ust_app_uid_get_channel_runtime_stats(uint64_t ust_session_id,
+		struct cds_list_head *buffer_reg_uid_list,
+		struct consumer_output *consumer, uint64_t uchan_id,
+		int overwrite, uint64_t *discarded, uint64_t *lost);
+int ust_app_pid_get_channel_runtime_stats(struct ltt_ust_session *usess,
+		struct ltt_ust_channel *uchan,
+		struct consumer_output *consumer,
+		int overwrite, uint64_t *discarded, uint64_t *lost);
+int ust_app_regenerate_statedump_all(struct ltt_ust_session *usess);
+int ust_app_rotate_session(struct ltt_session *session);
+
+static inline
+int ust_app_supported(void)
+{
+	return 1;
+}
 
 #else /* HAVE_LIBLTTNG_UST_CTL */
 
@@ -340,7 +406,7 @@ int ust_app_register(struct ust_register_msg *msg, int sock)
 	return -ENOSYS;
 }
 static inline
-int ust_app_register_done(int sock)
+int ust_app_register_done(struct ust_app *app)
 {
 	return -ENOSYS;
 }
@@ -354,11 +420,6 @@ void ust_app_unregister(int sock)
 {
 }
 static inline
-unsigned int ust_app_list_count(void)
-{
-	return 0;
-}
-static inline
 void ust_app_lock_list(void)
 {
 }
@@ -381,15 +442,12 @@ struct ust_app *ust_app_get_by_pid(pid_t pid)
 	return NULL;
 }
 static inline
-struct lttng_ht *ust_app_get_ht(void)
+int ust_app_ht_alloc(void)
 {
-	return NULL;
+	return 0;
 }
 static inline
-void ust_app_ht_alloc(void)
-{}
-static inline
-void ust_app_global_update(struct ltt_ust_session *usess, int sock)
+void ust_app_global_update(struct ltt_ust_session *usess, struct ust_app *app)
 {}
 static inline
 int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
@@ -410,12 +468,6 @@ int ust_app_create_channel_glb(struct ltt_ust_session *usess,
 	return 0;
 }
 static inline
-int ust_app_disable_all_event_glb(struct ltt_ust_session *usess,
-		struct ltt_ust_channel *uchan)
-{
-	return 0;
-}
-static inline
 int ust_app_enable_all_event_glb(struct ltt_ust_session *usess,
 		struct ltt_ust_channel *uchan)
 {
@@ -453,43 +505,97 @@ int ust_app_enable_event_pid(struct ltt_ust_session *usess,
 	return 0;
 }
 static inline
-int ust_app_disable_event_pid(struct ltt_ust_session *usess,
-		struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
-		pid_t pid)
+int ust_app_recv_registration(int sock, struct ust_register_msg *msg)
 {
 	return 0;
 }
 static inline
-int ust_app_calibrate_glb(struct lttng_ust_calibrate *calibrate)
+int ust_app_recv_notify(int sock)
 {
 	return 0;
 }
 static inline
-int ust_app_recv_registration(int sock, struct ust_register_msg *msg)
+struct ust_app *ust_app_create(struct ust_register_msg *msg, int sock)
+{
+	return NULL;
+}
+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;
 }
 static inline
-int ust_app_recv_notify(int sock)
+void ust_app_destroy(struct ust_app *app)
+{
+	return;
+}
+static inline
+int ust_app_snapshot_record(struct ltt_ust_session *usess,
+		struct snapshot_output *output, int wait, uint64_t max_stream_size)
 {
 	return 0;
 }
 static inline
-struct ust_app *ust_app_create(struct ust_register_msg *msg, int sock)
+unsigned int ust_app_get_nb_stream(struct ltt_ust_session *usess)
+{
+	return 0;
+}
+
+static inline
+int ust_app_supported(void)
+{
+	return 0;
+}
+static inline
+struct ust_app *ust_app_find_by_sock(int sock)
 {
 	return NULL;
 }
 static inline
-void ust_app_add(struct ust_app *app)
+struct ust_app *ust_app_find_by_pid(pid_t pid)
 {
+	return NULL;
 }
 static inline
-void ust_app_notify_sock_unregister(int sock)
+uint64_t ust_app_get_size_one_more_packet_per_stream(
+		struct ltt_ust_session *usess, uint64_t cur_nr_packets) {
+	return 0;
+}
+static inline
+int ust_app_uid_get_channel_runtime_stats(uint64_t ust_session_id,
+		struct cds_list_head *buffer_reg_uid_list,
+		struct consumer_output *consumer, int overwrite,
+		uint64_t uchan_id, uint64_t *discarded, uint64_t *lost)
+{
+	return 0;
+}
+
+static inline
+int ust_app_pid_get_channel_runtime_stats(struct ltt_ust_session *usess,
+		struct ltt_ust_channel *uchan,
+		struct consumer_output *consumer,
+		int overwrite, uint64_t *discarded, uint64_t *lost)
 {
+	return 0;
 }
+
 static inline
-ssize_t ust_app_push_metadata(struct ust_registry_session *registry,
-		struct consumer_socket *socket, int send_zero_data)
+int ust_app_regenerate_statedump_all(struct ltt_ust_session *usess)
+{
+	return 0;
+}
+
+static inline
+enum lttng_error_code ust_app_rotate_session(struct ltt_session *session)
 {
 	return 0;
 }