[lttng-tools.git] / src / bin / lttng-sessiond / ust-app.h

/*
 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
 *
 * 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,
 * as published by the Free Software Foundation.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#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"

/* 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

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.
 */
struct ust_register_msg {
	enum ustctl_socket_type type;
	uint32_t major;
	uint32_t minor;
	uint32_t abi_major;
	uint32_t abi_minor;
	pid_t pid;
	pid_t ppid;
	uid_t uid;
	gid_t gid;
	uint32_t bits_per_long;
	uint32_t uint8_t_alignment;
	uint32_t uint16_t_alignment;
	uint32_t uint32_t_alignment;
	uint32_t uint64_t_alignment;
	uint32_t long_alignment;
	int byte_order;		/* BIG_ENDIAN or LITTLE_ENDIAN */
	char name[LTTNG_UST_ABI_PROCNAME_LEN];
};

/*
 * 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;

/*
 * 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;

/*
 * Global applications HT used by the session daemon. This table is indexed by
 * socket using the notify_sock_n node and notify_sock value of an ust_app.
 */
struct lttng_ht *ust_app_ht_by_notify_sock;

/* Stream list containing ust_app_stream. */
struct ust_app_stream_list {
	unsigned int count;
	struct cds_list_head head;
};

struct ust_app_ctx {
	int handle;
	struct lttng_ust_context ctx;
	struct lttng_ust_object_data *obj;
	struct lttng_ht_node_ulong node;
};

struct ust_app_event {
	int enabled;
	int handle;
	struct lttng_ust_object_data *obj;
	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 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 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_object_data *obj;
	struct ustctl_consumer_channel_attr attr;
	struct ust_app_stream_list streams;
	/* Session pointer that owns this object. */
	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;
	/*
	 * Node indexed by channel name in the channels' hash table of a session.
	 */
	struct lttng_ht_node_str node;
	/*
	 * Node indexed by UST channel object descriptor (handle). Stored in the
	 * ust_objd hash table in the ust_app object.
	 */
	struct lttng_ht_node_ulong ust_objd_node;
};

struct ust_app_session {
	/*
	 * Lock protecting this session's ust app interaction. Held
	 * across command send/recv to/from app. Never nests within the
	 * session registry lock.
	 */
	pthread_mutex_t lock;

	int enabled;
	/* 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;
	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;
};

/*
 * Registered traceable applications. Libust registers to the session daemon
 * and a linked list is kept of all running traceable app.
 */
struct ust_app {
	int sock;
	int notify_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 */

	/* App ABI */
	uint32_t bits_per_long;
	uint32_t uint8_t_alignment;
	uint32_t uint16_t_alignment;
	uint32_t uint32_t_alignment;
	uint32_t uint64_t_alignment;
	uint32_t long_alignment;
	int byte_order;		/* BIG_ENDIAN or LITTLE_ENDIAN */

	int compatible; /* If the lttng-ust tracer version does not match the
					   supported version of the session daemon, this flag is
					   set to 0 (NOT compatible) else 1. */
	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];
	struct lttng_ht *sessions;
	struct lttng_ht_node_ulong pid_n;
	struct lttng_ht_node_ulong sock_n;
	struct lttng_ht_node_ulong notify_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;
	/*
	 * Hash table containing ust_app_channel indexed by channel objd.
	 */
	struct lttng_ht *ust_objd;
};

#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_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);
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,
		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);
int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
		struct ltt_ust_channel *uchan);
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_clean_list(void);
void ust_app_ht_alloc(void);
struct lttng_ht *ust_app_get_ht(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);
void ust_app_add(struct ust_app *app);
struct ust_app *ust_app_create(struct ust_register_msg *msg, int sock);

#else /* HAVE_LIBLTTNG_UST_CTL */

static inline
int ust_app_destroy_trace_all(struct ltt_ust_session *usess)
{
	return 0;
}
static inline
int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app)
{
	return 0;
}
static inline
int ust_app_start_trace_all(struct ltt_ust_session *usess)
{
	return 0;
}
static inline
int ust_app_stop_trace_all(struct ltt_ust_session *usess)
{
	return 0;
}
static inline
int ust_app_list_events(struct lttng_event **events)
{
	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)
{
	return -ENOSYS;
}
static inline
int ust_app_register_done(int sock)
{
	return -ENOSYS;
}
static inline
int ust_app_version(struct ust_app *app)
{
	return -ENOSYS;
}
static inline
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)
{
}
static inline
void ust_app_unlock_list(void)
{
}
static inline
void ust_app_clean_list(void)
{
}
static inline
struct ust_app_list *ust_app_get_list(void)
{
	return NULL;
}
static inline
struct ust_app *ust_app_get_by_pid(pid_t pid)
{
	return NULL;
}
static inline
struct lttng_ht *ust_app_get_ht(void)
{
	return NULL;
}
static inline
void ust_app_ht_alloc(void)
{}
static inline
void ust_app_global_update(struct ltt_ust_session *usess, int sock)
{}
static inline
int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
		struct ltt_ust_channel *uchan)
{
	return 0;
}
static inline
int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
		struct ltt_ust_channel *uchan)
{
	return 0;
}
static inline
int ust_app_create_channel_glb(struct ltt_ust_session *usess,
		struct ltt_ust_channel *uchan)
{
	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)
{
	return 0;
}
static inline
int ust_app_create_event_glb(struct ltt_ust_session *usess,
		struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
{
	return 0;
}
static inline
int ust_app_disable_event_glb(struct ltt_ust_session *usess,
		struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
{
	return 0;
}
static inline
int ust_app_enable_event_glb(struct ltt_ust_session *usess,
		struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
{
	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)
{
	return 0;
}
static inline
int ust_app_enable_event_pid(struct ltt_ust_session *usess,
		struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
		pid_t pid)
{
	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)
{
	return 0;
}
static inline
int ust_app_calibrate_glb(struct lttng_ust_calibrate *calibrate)
{
	return 0;
}
static inline
int ust_app_recv_registration(int sock, struct ust_register_msg *msg)
{
	return 0;
}
static inline
int ust_app_recv_notify(int sock)
{
	return 0;
}
static inline
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)
{
}

#endif /* HAVE_LIBLTTNG_UST_CTL */

#endif /* _LTT_UST_APP_H */
Commit	Line	Data
	1	/*
	2	* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License, version 2 only,
	6	* as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public License along
	14	* with this program; if not, write to the Free Software Foundation, Inc.,
	15	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	16	*/
	17
	18	#ifndef _LTT_UST_APP_H
	19	#define _LTT_UST_APP_H
	20
	21	#include <stdint.h>
	22
	23	#include <common/compat/uuid.h>
	24	#include "trace-ust.h"
	25	#include "ust-registry.h"
	26
	27	/* lttng-ust supported version. */
	28	//#define LTTNG_UST_COMM_MAJOR 2 /* comm protocol major version */
	29	//#define UST_APP_MAJOR_VERSION 3 /* Internal UST version supported */
	30
	31	#define UST_APP_EVENT_LIST_SIZE 32
	32
	33	/* Process name (short). Extra for the NULL byte. */
	34	#define UST_APP_PROCNAME_LEN 17
	35
	36	struct lttng_filter_bytecode;
	37	struct lttng_ust_filter_bytecode;
	38
	39	extern int ust_consumerd64_fd, ust_consumerd32_fd;
	40
	41	struct ust_app_ht_key {
	42	const char *name;
	43	const struct lttng_ust_filter_bytecode *filter;
	44	enum lttng_ust_loglevel_type loglevel;
	45	};
	46
	47	/*
	48	* Application registration data structure.
	49	*/
	50	struct ust_register_msg {
	51	enum ustctl_socket_type type;
	52	uint32_t major;
	53	uint32_t minor;
	54	uint32_t abi_major;
	55	uint32_t abi_minor;
	56	pid_t pid;
	57	pid_t ppid;
	58	uid_t uid;
	59	gid_t gid;
	60	uint32_t bits_per_long;
	61	uint32_t uint8_t_alignment;
	62	uint32_t uint16_t_alignment;
	63	uint32_t uint32_t_alignment;
	64	uint32_t uint64_t_alignment;
	65	uint32_t long_alignment;
	66	int byte_order; /* BIG_ENDIAN or LITTLE_ENDIAN */
	67	char name[LTTNG_UST_ABI_PROCNAME_LEN];
	68	};
	69
	70	/*
	71	* Global applications HT used by the session daemon. This table is indexed by
	72	* PID using the pid_n node and pid value of an ust_app.
	73	*/
	74	struct lttng_ht *ust_app_ht;
	75
	76	/*
	77	* Global applications HT used by the session daemon. This table is indexed by
	78	* socket using the sock_n node and sock value of an ust_app.
	79	*/
	80	struct lttng_ht *ust_app_ht_by_sock;
	81
	82	/*
	83	* Global applications HT used by the session daemon. This table is indexed by
	84	* socket using the notify_sock_n node and notify_sock value of an ust_app.
	85	*/
	86	struct lttng_ht *ust_app_ht_by_notify_sock;
	87
	88	/* Stream list containing ust_app_stream. */
	89	struct ust_app_stream_list {
	90	unsigned int count;
	91	struct cds_list_head head;
	92	};
	93
	94	struct ust_app_ctx {
	95	int handle;
	96	struct lttng_ust_context ctx;
	97	struct lttng_ust_object_data *obj;
	98	struct lttng_ht_node_ulong node;
	99	};
	100
	101	struct ust_app_event {
	102	int enabled;
	103	int handle;
	104	struct lttng_ust_object_data *obj;
	105	struct lttng_ust_event attr;
	106	char name[LTTNG_UST_SYM_NAME_LEN];
	107	struct lttng_ht_node_str node;
	108	struct lttng_ust_filter_bytecode *filter;
	109	};
	110
	111	struct ust_app_stream {
	112	int handle;
	113	char pathname[PATH_MAX];
	114	/* Format is %s_%d respectively channel name and CPU number. */
	115	char name[DEFAULT_STREAM_NAME_LEN];
	116	struct lttng_ust_object_data *obj;
	117	/* Using a list of streams to keep order. */
	118	struct cds_list_head list;
	119	};
	120
	121	struct ust_app_channel {
	122	int enabled;
	123	int handle;
	124	/* Channel and streams were sent to the UST tracer. */
	125	int is_sent;
	126	/* Unique key used to identify the channel on the consumer side. */
	127	unsigned long key;
	128	/* Number of stream that this channel is expected to receive. */
	129	unsigned int expected_stream_count;
	130	char name[LTTNG_UST_SYM_NAME_LEN];
	131	struct lttng_ust_object_data *obj;
	132	struct ustctl_consumer_channel_attr attr;
	133	struct ust_app_stream_list streams;
	134	/* Session pointer that owns this object. */
	135	struct ust_app_session *session;
	136	struct lttng_ht *ctx;
	137	struct lttng_ht *events;
	138	/*
	139	* UST event registry. The ONLY writer is the application thread.
	140	*/
	141	struct ust_registry_channel registry;
	142	/*
	143	* Node indexed by channel name in the channels' hash table of a session.
	144	*/
	145	struct lttng_ht_node_str node;
	146	/*
	147	* Node indexed by UST channel object descriptor (handle). Stored in the
	148	* ust_objd hash table in the ust_app object.
	149	*/
	150	struct lttng_ht_node_ulong ust_objd_node;
	151	};
	152
	153	struct ust_app_session {
	154	/*
	155	* Lock protecting this session's ust app interaction. Held
	156	* across command send/recv to/from app. Never nests within the
	157	* session registry lock.
	158	*/
	159	pthread_mutex_t lock;
	160
	161	int enabled;
	162	/* started: has the session been in started state at any time ? */
	163	int started; /* allows detection of start vs restart. */
	164	int handle; /* used has unique identifier for app session */
	165	int id; /* session unique identifier */
	166	struct ust_app_channel *metadata;
	167	struct ust_registry_session registry;
	168	struct lttng_ht channels; / Registered channels */
	169	struct lttng_ht_node_ulong node;
	170	char path[PATH_MAX];
	171	/* UID/GID of the user owning the session */
	172	uid_t uid;
	173	gid_t gid;
	174	struct cds_list_head teardown_node;
	175	};
	176
	177	/*
	178	* Registered traceable applications. Libust registers to the session daemon
	179	* and a linked list is kept of all running traceable app.
	180	*/
	181	struct ust_app {
	182	int sock;
	183	int notify_sock;
	184	pid_t pid;
	185	pid_t ppid;
	186	uid_t uid; /* User ID that owns the apps */
	187	gid_t gid; /* Group ID that owns the apps */
	188
	189	/* App ABI */
	190	uint32_t bits_per_long;
	191	uint32_t uint8_t_alignment;
	192	uint32_t uint16_t_alignment;
	193	uint32_t uint32_t_alignment;
	194	uint32_t uint64_t_alignment;
	195	uint32_t long_alignment;
	196	int byte_order; /* BIG_ENDIAN or LITTLE_ENDIAN */
	197
	198	int compatible; /* If the lttng-ust tracer version does not match the
	199	supported version of the session daemon, this flag is
	200	set to 0 (NOT compatible) else 1. */
	201	struct lttng_ust_tracer_version version;
	202	uint32_t v_major; /* Version major number */
	203	uint32_t v_minor; /* Version minor number */
	204	char name[UST_APP_PROCNAME_LEN];
	205	struct lttng_ht *sessions;
	206	struct lttng_ht_node_ulong pid_n;
	207	struct lttng_ht_node_ulong sock_n;
	208	struct lttng_ht_node_ulong notify_sock_n;
	209	/*
	210	* This is a list of ust app session that, once the app is going into
	211	* teardown mode, in the RCU call, each node in this list is removed and
	212	* deleted.
	213	*
	214	* Element of the list are added when an application unregisters after each
	215	* ht_del of ust_app_session associated to this app. This list is NOT used
	216	* when a session is destroyed.
	217	*/
	218	struct cds_list_head teardown_head;
	219	/*
	220	* Hash table containing ust_app_channel indexed by channel objd.
	221	*/
	222	struct lttng_ht *ust_objd;
	223	};
	224
	225	#ifdef HAVE_LIBLTTNG_UST_CTL
	226
	227	int ust_app_register(struct ust_register_msg *msg, int sock);
	228	static inline
	229	int ust_app_register_done(int sock)
	230	{
	231	return ustctl_register_done(sock);
	232	}
	233	int ust_app_version(struct ust_app *app);
	234	void ust_app_unregister(int sock);
	235	unsigned long ust_app_list_count(void);
	236	int ust_app_start_trace(struct ltt_ust_session usess, struct ust_app app);
	237	int ust_app_stop_trace(struct ltt_ust_session usess, struct ust_app app);
	238	int ust_app_start_trace_all(struct ltt_ust_session *usess);
	239	int ust_app_stop_trace_all(struct ltt_ust_session *usess);
	240	int ust_app_destroy_trace_all(struct ltt_ust_session *usess);
	241	int ust_app_list_events(struct lttng_event **events);
	242	int ust_app_list_event_fields(struct lttng_event_field **fields);
	243	int ust_app_create_channel_glb(struct ltt_ust_session *usess,
	244	struct ltt_ust_channel *uchan);
	245	int ust_app_create_event_glb(struct ltt_ust_session *usess,
	246	struct ltt_ust_channel uchan, struct ltt_ust_event uevent);
	247	int ust_app_disable_event_pid(struct ltt_ust_session *usess,
	248	struct ltt_ust_channel uchan, struct ltt_ust_event uevent,
	249	pid_t pid);
	250	int ust_app_enable_event_pid(struct ltt_ust_session *usess,
	251	struct ltt_ust_channel uchan, struct ltt_ust_event uevent,
	252	pid_t pid);
	253	int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
	254	struct ltt_ust_channel *uchan);
	255	int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
	256	struct ltt_ust_channel *uchan);
	257	int ust_app_enable_event_glb(struct ltt_ust_session *usess,
	258	struct ltt_ust_channel uchan, struct ltt_ust_event uevent);
	259	int ust_app_disable_all_event_glb(struct ltt_ust_session *usess,
	260	struct ltt_ust_channel *uchan);
	261	int ust_app_enable_all_event_glb(struct ltt_ust_session *usess,
	262	struct ltt_ust_channel *uchan);
	263	int ust_app_disable_event_glb(struct ltt_ust_session *usess,
	264	struct ltt_ust_channel uchan, struct ltt_ust_event uevent);
	265	int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
	266	struct ltt_ust_channel uchan, struct ltt_ust_context uctx);
	267	void ust_app_global_update(struct ltt_ust_session *usess, int sock);
	268
	269	void ust_app_clean_list(void);
	270	void ust_app_ht_alloc(void);
	271	struct lttng_ht *ust_app_get_ht(void);
	272	struct ust_app *ust_app_find_by_pid(pid_t pid);
	273	int ust_app_calibrate_glb(struct lttng_ust_calibrate *calibrate);
	274	struct ust_app_stream *ust_app_alloc_stream(void);
	275	int ust_app_recv_registration(int sock, struct ust_register_msg *msg);
	276	int ust_app_recv_notify(int sock);
	277	void ust_app_add(struct ust_app *app);
	278	struct ust_app ust_app_create(struct ust_register_msg msg, int sock);
	279
	280	#else /* HAVE_LIBLTTNG_UST_CTL */
	281
	282	static inline
	283	int ust_app_destroy_trace_all(struct ltt_ust_session *usess)
	284	{
	285	return 0;
	286	}
	287	static inline
	288	int ust_app_start_trace(struct ltt_ust_session usess, struct ust_app app)
	289	{
	290	return 0;
	291	}
	292	static inline
	293	int ust_app_start_trace_all(struct ltt_ust_session *usess)
	294	{
	295	return 0;
	296	}
	297	static inline
	298	int ust_app_stop_trace_all(struct ltt_ust_session *usess)
	299	{
	300	return 0;
	301	}
	302	static inline
	303	int ust_app_list_events(struct lttng_event **events)
	304	{
	305	return -ENOSYS;
	306	}
	307	static inline
	308	int ust_app_list_event_fields(struct lttng_event_field **fields)
	309	{
	310	return -ENOSYS;
	311	}
	312	static inline
	313	int ust_app_register(struct ust_register_msg *msg, int sock)
	314	{
	315	return -ENOSYS;
	316	}
	317	static inline
	318	int ust_app_register_done(int sock)
	319	{
	320	return -ENOSYS;
	321	}
	322	static inline
	323	int ust_app_version(struct ust_app *app)
	324	{
	325	return -ENOSYS;
	326	}
	327	static inline
	328	void ust_app_unregister(int sock)
	329	{
	330	}
	331	static inline
	332	unsigned int ust_app_list_count(void)
	333	{
	334	return 0;
	335	}
	336	static inline
	337	void ust_app_lock_list(void)
	338	{
	339	}
	340	static inline
	341	void ust_app_unlock_list(void)
	342	{
	343	}
	344	static inline
	345	void ust_app_clean_list(void)
	346	{
	347	}
	348	static inline
	349	struct ust_app_list *ust_app_get_list(void)
	350	{
	351	return NULL;
	352	}
	353	static inline
	354	struct ust_app *ust_app_get_by_pid(pid_t pid)
	355	{
	356	return NULL;
	357	}
	358	static inline
	359	struct lttng_ht *ust_app_get_ht(void)
	360	{
	361	return NULL;
	362	}
	363	static inline
	364	void ust_app_ht_alloc(void)
	365	{}
	366	static inline
	367	void ust_app_global_update(struct ltt_ust_session *usess, int sock)
	368	{}
	369	static inline
	370	int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
	371	struct ltt_ust_channel *uchan)
	372	{
	373	return 0;
	374	}
	375	static inline
	376	int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
	377	struct ltt_ust_channel *uchan)
	378	{
	379	return 0;
	380	}
	381	static inline
	382	int ust_app_create_channel_glb(struct ltt_ust_session *usess,
	383	struct ltt_ust_channel *uchan)
	384	{
	385	return 0;
	386	}
	387	static inline
	388	int ust_app_disable_all_event_glb(struct ltt_ust_session *usess,
	389	struct ltt_ust_channel *uchan)
	390	{
	391	return 0;
	392	}
	393	static inline
	394	int ust_app_enable_all_event_glb(struct ltt_ust_session *usess,
	395	struct ltt_ust_channel *uchan)
	396	{
	397	return 0;
	398	}
	399	static inline
	400	int ust_app_create_event_glb(struct ltt_ust_session *usess,
	401	struct ltt_ust_channel uchan, struct ltt_ust_event uevent)
	402	{
	403	return 0;
	404	}
	405	static inline
	406	int ust_app_disable_event_glb(struct ltt_ust_session *usess,
	407	struct ltt_ust_channel uchan, struct ltt_ust_event uevent)
	408	{
	409	return 0;
	410	}
	411	static inline
	412	int ust_app_enable_event_glb(struct ltt_ust_session *usess,
	413	struct ltt_ust_channel uchan, struct ltt_ust_event uevent)
	414	{
	415	return 0;
	416	}
	417	static inline
	418	int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
	419	struct ltt_ust_channel uchan, struct ltt_ust_context uctx)
	420	{
	421	return 0;
	422	}
	423	static inline
	424	int ust_app_enable_event_pid(struct ltt_ust_session *usess,
	425	struct ltt_ust_channel uchan, struct ltt_ust_event uevent,
	426	pid_t pid)
	427	{
	428	return 0;
	429	}
	430	static inline
	431	int ust_app_disable_event_pid(struct ltt_ust_session *usess,
	432	struct ltt_ust_channel uchan, struct ltt_ust_event uevent,
	433	pid_t pid)
	434	{
	435	return 0;
	436	}
	437	static inline
	438	int ust_app_calibrate_glb(struct lttng_ust_calibrate *calibrate)
	439	{
	440	return 0;
	441	}
	442	static inline
	443	int ust_app_recv_registration(int sock, struct ust_register_msg *msg)
	444	{
	445	return 0;
	446	}
	447	static inline
	448	int ust_app_recv_notify(int sock)
	449	{
	450	return 0;
	451	}
	452	static inline
	453	struct ust_app ust_app_create(struct ust_register_msg msg, int sock)
	454	{
	455	return NULL;
	456	}
	457	static inline
	458	void ust_app_add(struct ust_app *app)
	459	{
	460	}
	461
	462	#endif /* HAVE_LIBLTTNG_UST_CTL */
	463
	464	#endif /* _LTT_UST_APP_H */