[lttng-ust.git] / include / lttng / ust-context-provider.h

/*
 * SPDX-License-Identifier: MIT
 *
 * Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 */

#ifndef _LTTNG_UST_CONTEXT_PROVIDER_H
#define _LTTNG_UST_CONTEXT_PROVIDER_H

#include <stddef.h>
#include <lttng/ust-events.h>
#include <urcu/hlist.h>

struct lttng_ust_context_provider {
	char *name;
	size_t (*get_size)(struct lttng_ctx_field *field, size_t offset);
	void (*record)(struct lttng_ctx_field *field,
		       struct lttng_ust_lib_ring_buffer_ctx *ctx,
		       struct lttng_channel *chan);
	void (*get_value)(struct lttng_ctx_field *field,
			 struct lttng_ctx_value *value);
	struct cds_hlist_node node;
};

int lttng_ust_context_provider_register(struct lttng_ust_context_provider *provider);
void lttng_ust_context_provider_unregister(struct lttng_ust_context_provider *provider);

int lttng_context_is_app(const char *name);

void lttng_ust_context_set_session_provider(const char *name,
		size_t (*get_size)(struct lttng_ctx_field *field, size_t offset),
		void (*record)(struct lttng_ctx_field *field,
			struct lttng_ust_lib_ring_buffer_ctx *ctx,
			struct lttng_channel *chan),
		void (*get_value)(struct lttng_ctx_field *field,
			struct lttng_ctx_value *value));

int lttng_ust_add_app_context_to_ctx_rcu(const char *name, struct lttng_ctx **ctx);
int lttng_ust_context_set_provider_rcu(struct lttng_ctx **_ctx,
		const char *name,
		size_t (*get_size)(struct lttng_ctx_field *field, size_t offset),
		void (*record)(struct lttng_ctx_field *field,
			struct lttng_ust_lib_ring_buffer_ctx *ctx,
			struct lttng_channel *chan),
		void (*get_value)(struct lttng_ctx_field *field,
			struct lttng_ctx_value *value));
int lttng_context_add_rcu(struct lttng_ctx **ctx_p,
		const struct lttng_ctx_field *f);

#endif /* _LTTNG_UST_CONTEXT_PROVIDER_H */
Commit	Line	Data
53569322	1	/*
c0c0989a	2	* SPDX-License-Identifier: MIT
53569322	3	*
c0c0989a	4	* Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
53569322 MD	5	*/
53569322 MD	6
c0c0989a MJ	7	#ifndef _LTTNG_UST_CONTEXT_PROVIDER_H
	8	#define _LTTNG_UST_CONTEXT_PROVIDER_H
	9
b4051ad8	10	#include <stddef.h>
53569322 MD	11	#include <lttng/ust-events.h>
	12	#include <urcu/hlist.h>
	13
	14	struct lttng_ust_context_provider {
	15	char *name;
	16	size_t (get_size)(struct lttng_ctx_field field, size_t offset);
	17	void (record)(struct lttng_ctx_field field,
	18	struct lttng_ust_lib_ring_buffer_ctx *ctx,
	19	struct lttng_channel *chan);
	20	void (get_value)(struct lttng_ctx_field field,
	21	struct lttng_ctx_value *value);
	22	struct cds_hlist_node node;
	23	};
	24
	25	int lttng_ust_context_provider_register(struct lttng_ust_context_provider *provider);
	26	void lttng_ust_context_provider_unregister(struct lttng_ust_context_provider *provider);
	27
	28	int lttng_context_is_app(const char *name);
	29
	30	void lttng_ust_context_set_session_provider(const char *name,
	31	size_t (get_size)(struct lttng_ctx_field field, size_t offset),
	32	void (record)(struct lttng_ctx_field field,
	33	struct lttng_ust_lib_ring_buffer_ctx *ctx,
	34	struct lttng_channel *chan),
	35	void (get_value)(struct lttng_ctx_field field,
	36	struct lttng_ctx_value *value));
	37
	38	int lttng_ust_add_app_context_to_ctx_rcu(const char name, struct lttng_ctx *ctx);
	39	int lttng_ust_context_set_provider_rcu(struct lttng_ctx **_ctx,
	40	const char *name,
	41	size_t (get_size)(struct lttng_ctx_field field, size_t offset),
	42	void (record)(struct lttng_ctx_field field,
	43	struct lttng_ust_lib_ring_buffer_ctx *ctx,
	44	struct lttng_channel *chan),
	45	void (get_value)(struct lttng_ctx_field field,
	46	struct lttng_ctx_value *value));
	47	int lttng_context_add_rcu(struct lttng_ctx **ctx_p,
	48	const struct lttng_ctx_field *f);
	49
	50	#endif /* _LTTNG_UST_CONTEXT_PROVIDER_H */