[lttng-ust.git] / include / lttng / ust-abi.h

#ifndef _LTTNG_UST_ABI_H
#define _LTTNG_UST_ABI_H

/*
 * lttng/ust-abi.h
 *
 * LTTng-UST ABI header
 *
 * Copyright 2010-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <stdint.h>
#include <lttng/ust-compiler.h>

#ifndef LTTNG_PACKED
#error "LTTNG_PACKED should be defined"
#endif

#ifndef __ust_stringify
#define __ust_stringify1(x)	#x
#define __ust_stringify(x)	__ust_stringify1(x)
#endif /* __ust_stringify */

#define LTTNG_UST_SYM_NAME_LEN			256
#define LTTNG_UST_ABI_PROCNAME_LEN		16

/* UST comm magic number, used to validate protocol and endianness. */
#define LTTNG_UST_COMM_MAGIC			0xC57C57C5

/* Version for ABI between liblttng-ust, sessiond, consumerd */
#define LTTNG_UST_ABI_MAJOR_VERSION		8
#define LTTNG_UST_ABI_MINOR_VERSION		0

enum lttng_ust_instrumentation {
	LTTNG_UST_TRACEPOINT		= 0,
	LTTNG_UST_PROBE			= 1,
	LTTNG_UST_FUNCTION		= 2,
};

enum lttng_ust_loglevel_type {
	LTTNG_UST_LOGLEVEL_ALL		= 0,
	LTTNG_UST_LOGLEVEL_RANGE	= 1,
	LTTNG_UST_LOGLEVEL_SINGLE	= 2,
};

enum lttng_ust_output {
	LTTNG_UST_MMAP		= 0,
};

enum lttng_ust_chan_type {
	LTTNG_UST_CHAN_PER_CPU = 0,
	LTTNG_UST_CHAN_METADATA = 1,
};

struct lttng_ust_tracer_version {
	uint32_t major;
	uint32_t minor;
	uint32_t patchlevel;
} LTTNG_PACKED;

#define LTTNG_UST_CHANNEL_PADDING	(LTTNG_UST_SYM_NAME_LEN + 32)
/*
 * Given that the consumerd is limited to 64k file descriptors, we
 * cannot expect much more than 1MB channel structure size. This size is
 * depends on the number of streams within a channel, which depends on
 * the number of possible CPUs on the system.
 */
#define LTTNG_UST_CHANNEL_DATA_MAX_LEN	1048576U
struct lttng_ust_channel {
	uint64_t len;
	enum lttng_ust_chan_type type;
	char padding[LTTNG_UST_CHANNEL_PADDING];
	char data[];	/* variable sized data */
} LTTNG_PACKED;

#define LTTNG_UST_STREAM_PADDING1	(LTTNG_UST_SYM_NAME_LEN + 32)
struct lttng_ust_stream {
	uint64_t len;		/* shm len */
	uint32_t stream_nr;	/* stream number */
	char padding[LTTNG_UST_STREAM_PADDING1];
	/*
	 * shm_fd and wakeup_fd are send over unix socket as file
	 * descriptors after this structure.
	 */
} LTTNG_PACKED;

#define LTTNG_UST_EVENT_PADDING1	16
#define LTTNG_UST_EVENT_PADDING2	(LTTNG_UST_SYM_NAME_LEN + 32)
struct lttng_ust_event {
	enum lttng_ust_instrumentation instrumentation;
	char name[LTTNG_UST_SYM_NAME_LEN];	/* event name */

	enum lttng_ust_loglevel_type loglevel_type;
	int loglevel;	/* value, -1: all */
	char padding[LTTNG_UST_EVENT_PADDING1];

	/* Per instrumentation type configuration */
	union {
		char padding[LTTNG_UST_EVENT_PADDING2];
	} u;
} LTTNG_PACKED;

enum lttng_ust_field_type {
	LTTNG_UST_FIELD_OTHER			= 0,
	LTTNG_UST_FIELD_INTEGER			= 1,
	LTTNG_UST_FIELD_ENUM			= 2,
	LTTNG_UST_FIELD_FLOAT			= 3,
	LTTNG_UST_FIELD_STRING			= 4,
};

#define LTTNG_UST_FIELD_ITER_PADDING	(LTTNG_UST_SYM_NAME_LEN + 28)
struct lttng_ust_field_iter {
	char event_name[LTTNG_UST_SYM_NAME_LEN];
	char field_name[LTTNG_UST_SYM_NAME_LEN];
	enum lttng_ust_field_type type;
	int loglevel;				/* event loglevel */
	int nowrite;
	char padding[LTTNG_UST_FIELD_ITER_PADDING];
} LTTNG_PACKED;

enum lttng_ust_context_type {
	LTTNG_UST_CONTEXT_VTID			= 0,
	LTTNG_UST_CONTEXT_VPID			= 1,
	LTTNG_UST_CONTEXT_PTHREAD_ID		= 2,
	LTTNG_UST_CONTEXT_PROCNAME		= 3,
	LTTNG_UST_CONTEXT_IP			= 4,
	LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER	= 5,
	LTTNG_UST_CONTEXT_CPU_ID		= 6,
	LTTNG_UST_CONTEXT_APP_CONTEXT		= 7,
	LTTNG_UST_CONTEXT_CGROUP_NS		= 8,
	LTTNG_UST_CONTEXT_IPC_NS		= 9,
	LTTNG_UST_CONTEXT_MNT_NS		= 10,
	LTTNG_UST_CONTEXT_NET_NS		= 11,
	LTTNG_UST_CONTEXT_PID_NS		= 12,
	LTTNG_UST_CONTEXT_USER_NS		= 13,
	LTTNG_UST_CONTEXT_UTS_NS		= 14,
};

struct lttng_ust_perf_counter_ctx {
	uint32_t type;
	uint64_t config;
	char name[LTTNG_UST_SYM_NAME_LEN];
} LTTNG_PACKED;

#define LTTNG_UST_CONTEXT_PADDING1	16
#define LTTNG_UST_CONTEXT_PADDING2	(LTTNG_UST_SYM_NAME_LEN + 32)
struct lttng_ust_context {
	enum lttng_ust_context_type ctx;
	char padding[LTTNG_UST_CONTEXT_PADDING1];

	union {
		struct lttng_ust_perf_counter_ctx perf_counter;
		struct {
			/* Includes trailing '\0'. */
			uint32_t provider_name_len;
			uint32_t ctx_name_len;
		} app_ctx;
		char padding[LTTNG_UST_CONTEXT_PADDING2];
	} u;
} LTTNG_PACKED;

/*
 * Tracer channel attributes.
 */
#define LTTNG_UST_CHANNEL_ATTR_PADDING	(LTTNG_UST_SYM_NAME_LEN + 32)
struct lttng_ust_channel_attr {
	uint64_t subbuf_size;			/* bytes */
	uint64_t num_subbuf;			/* power of 2 */
	int overwrite;				/* 1: overwrite, 0: discard */
	unsigned int switch_timer_interval;	/* usec */
	unsigned int read_timer_interval;	/* usec */
	enum lttng_ust_output output;		/* splice, mmap */
	union {
		struct {
			int64_t blocking_timeout;	/* Blocking timeout (usec) */
		} s;
		char padding[LTTNG_UST_CHANNEL_ATTR_PADDING];
	} u;
} LTTNG_PACKED;

#define LTTNG_UST_TRACEPOINT_ITER_PADDING	16
struct lttng_ust_tracepoint_iter {
	char name[LTTNG_UST_SYM_NAME_LEN];	/* provider:name */
	int loglevel;
	char padding[LTTNG_UST_TRACEPOINT_ITER_PADDING];
} LTTNG_PACKED;

enum lttng_ust_object_type {
	LTTNG_UST_OBJECT_TYPE_UNKNOWN = -1,
	LTTNG_UST_OBJECT_TYPE_CHANNEL = 0,
	LTTNG_UST_OBJECT_TYPE_STREAM = 1,
	LTTNG_UST_OBJECT_TYPE_EVENT = 2,
	LTTNG_UST_OBJECT_TYPE_CONTEXT = 3,
};

#define LTTNG_UST_OBJECT_DATA_PADDING1	32
#define LTTNG_UST_OBJECT_DATA_PADDING2	(LTTNG_UST_SYM_NAME_LEN + 32)

struct lttng_ust_object_data {
	enum lttng_ust_object_type type;
	int handle;
	uint64_t size;
	char padding1[LTTNG_UST_OBJECT_DATA_PADDING1];
	union {
		struct {
			void *data;
			enum lttng_ust_chan_type type;
			int wakeup_fd;
		} channel;
		struct {
			int shm_fd;
			int wakeup_fd;
			uint32_t stream_nr;
		} stream;
		char padding2[LTTNG_UST_OBJECT_DATA_PADDING2];
	} u;
} LTTNG_PACKED;

enum lttng_ust_calibrate_type {
	LTTNG_UST_CALIBRATE_TRACEPOINT,
};

#define LTTNG_UST_CALIBRATE_PADDING1	16
#define LTTNG_UST_CALIBRATE_PADDING2	(LTTNG_UST_SYM_NAME_LEN + 32)
struct lttng_ust_calibrate {
	enum lttng_ust_calibrate_type type;	/* type (input) */
	char padding[LTTNG_UST_CALIBRATE_PADDING1];

	union {
		char padding[LTTNG_UST_CALIBRATE_PADDING2];
	} u;
} LTTNG_PACKED;

#define FILTER_BYTECODE_MAX_LEN		65536
#define LTTNG_UST_FILTER_PADDING	32
struct lttng_ust_filter_bytecode {
	uint32_t len;
	uint32_t reloc_offset;
	uint64_t seqnum;
	char padding[LTTNG_UST_FILTER_PADDING];
	char data[0];
} LTTNG_PACKED;

#define LTTNG_UST_EXCLUSION_PADDING	32
struct lttng_ust_event_exclusion {
	uint32_t count;
	char padding[LTTNG_UST_EXCLUSION_PADDING];
	char names[LTTNG_UST_SYM_NAME_LEN][0];
} LTTNG_PACKED;

#define _UST_CMD(minor)				(minor)
#define _UST_CMDR(minor, type)			(minor)
#define _UST_CMDW(minor, type)			(minor)

/* Handled by object descriptor */
#define LTTNG_UST_RELEASE			_UST_CMD(0x1)

/* Handled by object cmd */

/* LTTng-UST commands */
#define LTTNG_UST_SESSION			_UST_CMD(0x40)
#define LTTNG_UST_TRACER_VERSION		\
	_UST_CMDR(0x41, struct lttng_ust_tracer_version)
#define LTTNG_UST_TRACEPOINT_LIST		_UST_CMD(0x42)
#define LTTNG_UST_WAIT_QUIESCENT		_UST_CMD(0x43)
#define LTTNG_UST_REGISTER_DONE			_UST_CMD(0x44)
#define LTTNG_UST_TRACEPOINT_FIELD_LIST		_UST_CMD(0x45)

/* Session FD commands */
#define LTTNG_UST_CHANNEL			\
	_UST_CMDW(0x51, struct lttng_ust_channel)
#define LTTNG_UST_SESSION_START			_UST_CMD(0x52)
#define LTTNG_UST_SESSION_STOP			_UST_CMD(0x53)
#define LTTNG_UST_SESSION_STATEDUMP		_UST_CMD(0x54)

/* Channel FD commands */
#define LTTNG_UST_STREAM			_UST_CMD(0x60)
#define LTTNG_UST_EVENT			\
	_UST_CMDW(0x61, struct lttng_ust_event)

/* Event and Channel FD commands */
#define LTTNG_UST_CONTEXT			\
	_UST_CMDW(0x70, struct lttng_ust_context)
#define LTTNG_UST_FLUSH_BUFFER			\
	_UST_CMD(0x71)

/* Event, Channel and Session commands */
#define LTTNG_UST_ENABLE			_UST_CMD(0x80)
#define LTTNG_UST_DISABLE			_UST_CMD(0x81)

/* Tracepoint list commands */
#define LTTNG_UST_TRACEPOINT_LIST_GET		_UST_CMD(0x90)
#define LTTNG_UST_TRACEPOINT_FIELD_LIST_GET	_UST_CMD(0x91)

/* Event FD commands */
#define LTTNG_UST_FILTER			_UST_CMD(0xA0)
#define LTTNG_UST_EXCLUSION			_UST_CMD(0xA1)

#define LTTNG_UST_ROOT_HANDLE	0

struct lttng_ust_obj;

union ust_args {
	struct {
		void *chan_data;
		int wakeup_fd;
	} channel;
	struct {
		int shm_fd;
		int wakeup_fd;
	} stream;
	struct {
		struct lttng_ust_field_iter entry;
	} field_list;
	struct {
		char *ctxname;
	} app_context;
};

struct lttng_ust_objd_ops {
	long (*cmd)(int objd, unsigned int cmd, unsigned long arg,
		union ust_args *args, void *owner);
	int (*release)(int objd);
};

/* Create root handle. Always ID 0. */
int lttng_abi_create_root_handle(void);

const struct lttng_ust_objd_ops *objd_ops(int id);
int lttng_ust_objd_unref(int id, int is_owner);

void lttng_ust_abi_exit(void);
void lttng_ust_events_exit(void);
void lttng_ust_objd_table_owner_cleanup(void *owner);

#endif /* _LTTNG_UST_ABI_H */
Commit	Line	Data
9f3fdbc6 MD	1	#ifndef _LTTNG_UST_ABI_H
	2	#define _LTTNG_UST_ABI_H
	3
	4	/*
4318ae1b	5	* lttng/ust-abi.h
9f3fdbc6	6	*
9f3fdbc6 MD	7	* LTTng-UST ABI header
9f3fdbc6 MD	8	*
e92f3e28 MD	9	* Copyright 2010-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	10	*
	11	* Permission is hereby granted, free of charge, to any person obtaining a copy
	12	* of this software and associated documentation files (the "Software"), to deal
	13	* in the Software without restriction, including without limitation the rights
	14	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	15	* copies of the Software, and to permit persons to whom the Software is
	16	* furnished to do so, subject to the following conditions:
a60d70e6	17	*
e92f3e28 MD	18	* The above copyright notice and this permission notice shall be included in
e92f3e28 MD	19	* all copies or substantial portions of the Software.
d2428e87 MD	20	*
	21	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	22	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	23	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	24	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	25	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	26	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	27	* SOFTWARE.
9f3fdbc6 MD	28	*/
9f3fdbc6 MD	29
0a42beb6	30	#include <stdint.h>
b3f60bbf	31	#include <lttng/ust-compiler.h>
0a42beb6	32
db56acaf MD	33	#ifndef LTTNG_PACKED
	34	#error "LTTNG_PACKED should be defined"
	35	#endif
	36
32ce8569 MD	37	#ifndef __ust_stringify
	38	#define __ust_stringify1(x) #x
	39	#define __ust_stringify(x) __ust_stringify1(x)
	40	#endif /* __ust_stringify */
9f3fdbc6	41
32ce8569 MD	42	#define LTTNG_UST_SYM_NAME_LEN 256
	43	#define LTTNG_UST_ABI_PROCNAME_LEN 16
	44
	45	/* UST comm magic number, used to validate protocol and endianness. */
	46	#define LTTNG_UST_COMM_MAGIC 0xC57C57C5
b35d179d	47
0f4eaec3	48	/* Version for ABI between liblttng-ust, sessiond, consumerd */
6c737d05 MD	49	#define LTTNG_UST_ABI_MAJOR_VERSION 8
6c737d05 MD	50	#define LTTNG_UST_ABI_MINOR_VERSION 0
0f4eaec3	51
9f3fdbc6	52	enum lttng_ust_instrumentation {
df854e41 MD	53	LTTNG_UST_TRACEPOINT = 0,
	54	LTTNG_UST_PROBE = 1,
	55	LTTNG_UST_FUNCTION = 2,
6b0e60f1 MD	56	};
	57
	58	enum lttng_ust_loglevel_type {
882a56d7 MD	59	LTTNG_UST_LOGLEVEL_ALL = 0,
	60	LTTNG_UST_LOGLEVEL_RANGE = 1,
	61	LTTNG_UST_LOGLEVEL_SINGLE = 2,
9f3fdbc6 MD	62	};
9f3fdbc6 MD	63
9f3fdbc6	64	enum lttng_ust_output {
b35d179d	65	LTTNG_UST_MMAP = 0,
9f3fdbc6 MD	66	};
9f3fdbc6 MD	67
74d81a6c MD	68	enum lttng_ust_chan_type {
	69	LTTNG_UST_CHAN_PER_CPU = 0,
	70	LTTNG_UST_CHAN_METADATA = 1,
	71	};
	72
b35d179d	73	struct lttng_ust_tracer_version {
b728d87e MD	74	uint32_t major;
b728d87e MD	75	uint32_t minor;
b35d179d	76	uint32_t patchlevel;
b3f60bbf	77	} LTTNG_PACKED;
9f3fdbc6	78
74d81a6c MD	79	#define LTTNG_UST_CHANNEL_PADDING (LTTNG_UST_SYM_NAME_LEN + 32)
	80	/*
	81	* Given that the consumerd is limited to 64k file descriptors, we
	82	* cannot expect much more than 1MB channel structure size. This size is
	83	* depends on the number of streams within a channel, which depends on
	84	* the number of possible CPUs on the system.
	85	*/
	86	#define LTTNG_UST_CHANNEL_DATA_MAX_LEN 1048576U
9f3fdbc6	87	struct lttng_ust_channel {
74d81a6c MD	88	uint64_t len;
74d81a6c MD	89	enum lttng_ust_chan_type type;
1332bb04	90	char padding[LTTNG_UST_CHANNEL_PADDING];
74d81a6c	91	char data[]; /* variable sized data */
b3f60bbf	92	} LTTNG_PACKED;
9f3fdbc6	93
74d81a6c	94	#define LTTNG_UST_STREAM_PADDING1 (LTTNG_UST_SYM_NAME_LEN + 32)
381c0f1e	95	struct lttng_ust_stream {
74d81a6c MD	96	uint64_t len; /* shm len */
74d81a6c MD	97	uint32_t stream_nr; /* stream number */
1332bb04	98	char padding[LTTNG_UST_STREAM_PADDING1];
74d81a6c MD	99	/*
	100	* shm_fd and wakeup_fd are send over unix socket as file
	101	* descriptors after this structure.
	102	*/
b3f60bbf	103	} LTTNG_PACKED;
381c0f1e	104
89f26d57	105	#define LTTNG_UST_EVENT_PADDING1 16
74d81a6c	106	#define LTTNG_UST_EVENT_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32)
9f3fdbc6	107	struct lttng_ust_event {
9f3fdbc6	108	enum lttng_ust_instrumentation instrumentation;
6b0e60f1 MD	109	char name[LTTNG_UST_SYM_NAME_LEN]; /* event name */
	110
	111	enum lttng_ust_loglevel_type loglevel_type;
882a56d7	112	int loglevel; /* value, -1: all */
1332bb04	113	char padding[LTTNG_UST_EVENT_PADDING1];
6b0e60f1	114
9f3fdbc6 MD	115	/* Per instrumentation type configuration */
9f3fdbc6 MD	116	union {
1332bb04	117	char padding[LTTNG_UST_EVENT_PADDING2];
9f3fdbc6	118	} u;
b3f60bbf	119	} LTTNG_PACKED;
9f3fdbc6	120
06d4f27e MD	121	enum lttng_ust_field_type {
	122	LTTNG_UST_FIELD_OTHER = 0,
	123	LTTNG_UST_FIELD_INTEGER = 1,
	124	LTTNG_UST_FIELD_ENUM = 2,
	125	LTTNG_UST_FIELD_FLOAT = 3,
	126	LTTNG_UST_FIELD_STRING = 4,
	127	};
	128
74d81a6c	129	#define LTTNG_UST_FIELD_ITER_PADDING (LTTNG_UST_SYM_NAME_LEN + 28)
06d4f27e MD	130	struct lttng_ust_field_iter {
	131	char event_name[LTTNG_UST_SYM_NAME_LEN];
	132	char field_name[LTTNG_UST_SYM_NAME_LEN];
	133	enum lttng_ust_field_type type;
	134	int loglevel; /* event loglevel */
180901e6	135	int nowrite;
06d4f27e	136	char padding[LTTNG_UST_FIELD_ITER_PADDING];
b3f60bbf	137	} LTTNG_PACKED;
06d4f27e	138
9f3fdbc6	139	enum lttng_ust_context_type {
3b402b40	140	LTTNG_UST_CONTEXT_VTID = 0,
c1ef86f0 MD	141	LTTNG_UST_CONTEXT_VPID = 1,
c1ef86f0 MD	142	LTTNG_UST_CONTEXT_PTHREAD_ID = 2,
4847e9bb	143	LTTNG_UST_CONTEXT_PROCNAME = 3,
96f85541	144	LTTNG_UST_CONTEXT_IP = 4,
d58d1454	145	LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER = 5,
c7ea8487	146	LTTNG_UST_CONTEXT_CPU_ID = 6,
53f0df51	147	LTTNG_UST_CONTEXT_APP_CONTEXT = 7,
735bef47 MJ	148	LTTNG_UST_CONTEXT_CGROUP_NS = 8,
	149	LTTNG_UST_CONTEXT_IPC_NS = 9,
	150	LTTNG_UST_CONTEXT_MNT_NS = 10,
	151	LTTNG_UST_CONTEXT_NET_NS = 11,
	152	LTTNG_UST_CONTEXT_PID_NS = 12,
	153	LTTNG_UST_CONTEXT_USER_NS = 13,
	154	LTTNG_UST_CONTEXT_UTS_NS = 14,
9f3fdbc6 MD	155	};
9f3fdbc6 MD	156
d58d1454 MD	157	struct lttng_ust_perf_counter_ctx {
	158	uint32_t type;
	159	uint64_t config;
	160	char name[LTTNG_UST_SYM_NAME_LEN];
	161	} LTTNG_PACKED;
	162
1332bb04	163	#define LTTNG_UST_CONTEXT_PADDING1 16
74d81a6c	164	#define LTTNG_UST_CONTEXT_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32)
9f3fdbc6 MD	165	struct lttng_ust_context {
9f3fdbc6 MD	166	enum lttng_ust_context_type ctx;
1332bb04 MD	167	char padding[LTTNG_UST_CONTEXT_PADDING1];
1332bb04 MD	168
9f3fdbc6	169	union {
d58d1454	170	struct lttng_ust_perf_counter_ctx perf_counter;
53f0df51 JG	171	struct {
	172	/* Includes trailing '\0'. */
	173	uint32_t provider_name_len;
	174	uint32_t ctx_name_len;
	175	} app_ctx;
1332bb04	176	char padding[LTTNG_UST_CONTEXT_PADDING2];
9f3fdbc6	177	} u;
b3f60bbf	178	} LTTNG_PACKED;
9f3fdbc6	179
92462b01 MD	180	/*
	181	* Tracer channel attributes.
	182	*/
74d81a6c	183	#define LTTNG_UST_CHANNEL_ATTR_PADDING (LTTNG_UST_SYM_NAME_LEN + 32)
92462b01	184	struct lttng_ust_channel_attr {
92462b01 MD	185	uint64_t subbuf_size; /* bytes */
92462b01 MD	186	uint64_t num_subbuf; /* power of 2 */
b3f60bbf	187	int overwrite; /* 1: overwrite, 0: discard */
92462b01 MD	188	unsigned int switch_timer_interval; /* usec */
	189	unsigned int read_timer_interval; /* usec */
	190	enum lttng_ust_output output; /* splice, mmap */
b2c5f61a MD	191	union {
	192	struct {
	193	int64_t blocking_timeout; /* Blocking timeout (usec) */
	194	} s;
	195	char padding[LTTNG_UST_CHANNEL_ATTR_PADDING];
	196	} u;
b3f60bbf	197	} LTTNG_PACKED;
92462b01	198
1332bb04	199	#define LTTNG_UST_TRACEPOINT_ITER_PADDING 16
cbef6901 MD	200	struct lttng_ust_tracepoint_iter {
cbef6901 MD	201	char name[LTTNG_UST_SYM_NAME_LEN]; /* provider:name */
882a56d7	202	int loglevel;
1332bb04	203	char padding[LTTNG_UST_TRACEPOINT_ITER_PADDING];
b3f60bbf	204	} LTTNG_PACKED;
cbef6901	205
74d81a6c MD	206	enum lttng_ust_object_type {
	207	LTTNG_UST_OBJECT_TYPE_UNKNOWN = -1,
	208	LTTNG_UST_OBJECT_TYPE_CHANNEL = 0,
	209	LTTNG_UST_OBJECT_TYPE_STREAM = 1,
32ce8569 MD	210	LTTNG_UST_OBJECT_TYPE_EVENT = 2,
32ce8569 MD	211	LTTNG_UST_OBJECT_TYPE_CONTEXT = 3,
74d81a6c MD	212	};
	213
	214	#define LTTNG_UST_OBJECT_DATA_PADDING1 32
	215	#define LTTNG_UST_OBJECT_DATA_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32)
	216
92462b01	217	struct lttng_ust_object_data {
74d81a6c	218	enum lttng_ust_object_type type;
92462b01	219	int handle;
74d81a6c MD	220	uint64_t size;
	221	char padding1[LTTNG_UST_OBJECT_DATA_PADDING1];
	222	union {
	223	struct {
	224	void *data;
	225	enum lttng_ust_chan_type type;
ff0f5728	226	int wakeup_fd;
74d81a6c MD	227	} channel;
	228	struct {
	229	int shm_fd;
	230	int wakeup_fd;
	231	uint32_t stream_nr;
	232	} stream;
	233	char padding2[LTTNG_UST_OBJECT_DATA_PADDING2];
	234	} u;
b3f60bbf	235	} LTTNG_PACKED;
92462b01	236
d9a9a33b MD	237	enum lttng_ust_calibrate_type {
	238	LTTNG_UST_CALIBRATE_TRACEPOINT,
	239	};
	240
1332bb04	241	#define LTTNG_UST_CALIBRATE_PADDING1 16
74d81a6c	242	#define LTTNG_UST_CALIBRATE_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32)
d9a9a33b MD	243	struct lttng_ust_calibrate {
d9a9a33b MD	244	enum lttng_ust_calibrate_type type; /* type (input) */
1332bb04 MD	245	char padding[LTTNG_UST_CALIBRATE_PADDING1];
	246
	247	union {
	248	char padding[LTTNG_UST_CALIBRATE_PADDING2];
	249	} u;
b3f60bbf	250	} LTTNG_PACKED;
d9a9a33b	251
5b4839a8	252	#define FILTER_BYTECODE_MAX_LEN 65536
a5930599	253	#define LTTNG_UST_FILTER_PADDING 32
2d78951a	254	struct lttng_ust_filter_bytecode {
2734ca65 CB	255	uint32_t len;
2734ca65 CB	256	uint32_t reloc_offset;
3f6fd224	257	uint64_t seqnum;
a5930599	258	char padding[LTTNG_UST_FILTER_PADDING];
2d78951a	259	char data[0];
b3f60bbf	260	} LTTNG_PACKED;
2d78951a	261
86e0c24e JI	262	#define LTTNG_UST_EXCLUSION_PADDING 32
	263	struct lttng_ust_event_exclusion {
	264	uint32_t count;
	265	char padding[LTTNG_UST_EXCLUSION_PADDING];
	266	char names[LTTNG_UST_SYM_NAME_LEN][0];
	267	} LTTNG_PACKED;
	268
9f3fdbc6 MD	269	#define _UST_CMD(minor) (minor)
	270	#define _UST_CMDR(minor, type) (minor)
	271	#define _UST_CMDW(minor, type) (minor)
	272
46050b1a MD	273	/* Handled by object descriptor */
	274	#define LTTNG_UST_RELEASE _UST_CMD(0x1)
	275
	276	/* Handled by object cmd */
	277
9f3fdbc6 MD	278	/* LTTng-UST commands */
	279	#define LTTNG_UST_SESSION _UST_CMD(0x40)
	280	#define LTTNG_UST_TRACER_VERSION \
	281	_UST_CMDR(0x41, struct lttng_ust_tracer_version)
	282	#define LTTNG_UST_TRACEPOINT_LIST _UST_CMD(0x42)
	283	#define LTTNG_UST_WAIT_QUIESCENT _UST_CMD(0x43)
11ff9c7d	284	#define LTTNG_UST_REGISTER_DONE _UST_CMD(0x44)
06d4f27e	285	#define LTTNG_UST_TRACEPOINT_FIELD_LIST _UST_CMD(0x45)
9f3fdbc6	286
46050b1a	287	/* Session FD commands */
9f3fdbc6 MD	288	#define LTTNG_UST_CHANNEL \
	289	_UST_CMDW(0x51, struct lttng_ust_channel)
	290	#define LTTNG_UST_SESSION_START _UST_CMD(0x52)
	291	#define LTTNG_UST_SESSION_STOP _UST_CMD(0x53)
710b8ee3	292	#define LTTNG_UST_SESSION_STATEDUMP _UST_CMD(0x54)
9f3fdbc6	293
46050b1a	294	/* Channel FD commands */
9f3fdbc6 MD	295	#define LTTNG_UST_STREAM _UST_CMD(0x60)
	296	#define LTTNG_UST_EVENT \
	297	_UST_CMDW(0x61, struct lttng_ust_event)
	298
46050b1a	299	/* Event and Channel FD commands */
9f3fdbc6 MD	300	#define LTTNG_UST_CONTEXT \
9f3fdbc6 MD	301	_UST_CMDW(0x70, struct lttng_ust_context)
43d330a4	302	#define LTTNG_UST_FLUSH_BUFFER \
43861eab	303	_UST_CMD(0x71)
9f3fdbc6	304
46050b1a	305	/* Event, Channel and Session commands */
9f3fdbc6 MD	306	#define LTTNG_UST_ENABLE _UST_CMD(0x80)
	307	#define LTTNG_UST_DISABLE _UST_CMD(0x81)
	308
51489cad MD	309	/* Tracepoint list commands */
51489cad MD	310	#define LTTNG_UST_TRACEPOINT_LIST_GET _UST_CMD(0x90)
06d4f27e	311	#define LTTNG_UST_TRACEPOINT_FIELD_LIST_GET _UST_CMD(0x91)
51489cad	312
2d78951a MD	313	/* Event FD commands */
2d78951a MD	314	#define LTTNG_UST_FILTER _UST_CMD(0xA0)
75582b3a	315	#define LTTNG_UST_EXCLUSION _UST_CMD(0xA1)
2d78951a	316
46050b1a MD	317	#define LTTNG_UST_ROOT_HANDLE 0
46050b1a MD	318
b61ce3b2	319	struct lttng_ust_obj;
46050b1a	320
ef9ff354 MD	321	union ust_args {
ef9ff354 MD	322	struct {
74d81a6c	323	void *chan_data;
ff0f5728	324	int wakeup_fd;
ef9ff354 MD	325	} channel;
ef9ff354 MD	326	struct {
74d81a6c MD	327	int shm_fd;
74d81a6c MD	328	int wakeup_fd;
ef9ff354	329	} stream;
40003310 MD	330	struct {
	331	struct lttng_ust_field_iter entry;
	332	} field_list;
8e696cfa MD	333	struct {
	334	char *ctxname;
	335	} app_context;
ef9ff354 MD	336	};
ef9ff354 MD	337
b61ce3b2	338	struct lttng_ust_objd_ops {
ef9ff354	339	long (*cmd)(int objd, unsigned int cmd, unsigned long arg,
f59ed768	340	union ust_args args, void owner);
46050b1a MD	341	int (*release)(int objd);
	342	};
	343
	344	/* Create root handle. Always ID 0. */
	345	int lttng_abi_create_root_handle(void);
	346
b61ce3b2	347	const struct lttng_ust_objd_ops *objd_ops(int id);
1849ef7c	348	int lttng_ust_objd_unref(int id, int is_owner);
46050b1a MD	349
46050b1a MD	350	void lttng_ust_abi_exit(void);
003fedf4	351	void lttng_ust_events_exit(void);
f59ed768	352	void lttng_ust_objd_table_owner_cleanup(void *owner);
b35d179d	353
9f3fdbc6	354	#endif /* _LTTNG_UST_ABI_H */