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

#ifndef _LTTNG_UST_CONTEXT_PROVIDER_H
#define _LTTNG_UST_CONTEXT_PROVIDER_H

/*
 * Copyright 2016 - 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 <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 MD	1	#ifndef _LTTNG_UST_CONTEXT_PROVIDER_H
	2	#define _LTTNG_UST_CONTEXT_PROVIDER_H
	3
	4	/*
	5	* Copyright 2016 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	6	*
	7	* Permission is hereby granted, free of charge, to any person obtaining a copy
	8	* of this software and associated documentation files (the "Software"), to deal
	9	* in the Software without restriction, including without limitation the rights
	10	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	11	* copies of the Software, and to permit persons to whom the Software is
	12	* furnished to do so, subject to the following conditions:
	13	*
	14	* The above copyright notice and this permission notice shall be included in
	15	* all copies or substantial portions of the Software.
	16	*
	17	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	18	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	19	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	20	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	21	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	22	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	23	* SOFTWARE.
	24	*/
	25
	26	#include <lttng/ust-events.h>
	27	#include <urcu/hlist.h>
	28
	29	struct lttng_ust_context_provider {
	30	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	struct cds_hlist_node node;
	38	};
	39
	40	int lttng_ust_context_provider_register(struct lttng_ust_context_provider *provider);
	41	void lttng_ust_context_provider_unregister(struct lttng_ust_context_provider *provider);
	42
	43	int lttng_context_is_app(const char *name);
	44
	45	void lttng_ust_context_set_session_provider(const char *name,
	46	size_t (get_size)(struct lttng_ctx_field field, size_t offset),
	47	void (record)(struct lttng_ctx_field field,
	48	struct lttng_ust_lib_ring_buffer_ctx *ctx,
	49	struct lttng_channel *chan),
	50	void (get_value)(struct lttng_ctx_field field,
	51	struct lttng_ctx_value *value));
	52
	53	int lttng_ust_add_app_context_to_ctx_rcu(const char name, struct lttng_ctx *ctx);
	54	int lttng_ust_context_set_provider_rcu(struct lttng_ctx **_ctx,
	55	const char *name,
	56	size_t (get_size)(struct lttng_ctx_field field, size_t offset),
	57	void (record)(struct lttng_ctx_field field,
	58	struct lttng_ust_lib_ring_buffer_ctx *ctx,
	59	struct lttng_channel *chan),
	60	void (get_value)(struct lttng_ctx_field field,
	61	struct lttng_ctx_value *value));
	62	int lttng_context_add_rcu(struct lttng_ctx **ctx_p,
	63	const struct lttng_ctx_field *f);
	64
65	#endif /* _LTTNG_UST_CONTEXT_PROVIDER_H */