#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 */