[lttng-tools.git] / src / common / index-allocator.h

/*
 * Copyright (C) 2020 Francis Deslauriers <francis.deslauriers@efficios.com>
 *
 * SPDX-License-Identifier: GPL-2.0-only
 *
 */

#ifndef _COMMON_INDEX_ALLOCATOR_H
#define _COMMON_INDEX_ALLOCATOR_H

#include <inttypes.h>

struct lttng_index_allocator;

enum lttng_index_allocator_status {
	LTTNG_INDEX_ALLOCATOR_STATUS_OK,
	LTTNG_INDEX_ALLOCATOR_STATUS_EMPTY,
	LTTNG_INDEX_ALLOCATOR_STATUS_ERROR,
};

struct lttng_index_allocator *lttng_index_allocator_create(
		uint64_t index_count);

uint64_t lttng_index_allocator_get_index_count(
	struct lttng_index_allocator *allocator);

enum lttng_index_allocator_status lttng_index_allocator_alloc(
		struct lttng_index_allocator *allocator,
		uint64_t *index);

enum lttng_index_allocator_status lttng_index_allocator_release(
		struct lttng_index_allocator *allocator, uint64_t index);

void lttng_index_allocator_destroy(struct lttng_index_allocator *allocator);

#endif /* _COMMON_INDEX_ALLOCATOR_H */
Commit	Line	Data
2463b787 JR	1	/*
	2	* Copyright (C) 2020 Francis Deslauriers <francis.deslauriers@efficios.com>
	3	*
	4	* SPDX-License-Identifier: GPL-2.0-only
	5	*
	6	*/
	7
	8	#ifndef _COMMON_INDEX_ALLOCATOR_H
	9	#define _COMMON_INDEX_ALLOCATOR_H
	10
	11	#include <inttypes.h>
	12
	13	struct lttng_index_allocator;
	14
	15	enum lttng_index_allocator_status {
	16	LTTNG_INDEX_ALLOCATOR_STATUS_OK,
	17	LTTNG_INDEX_ALLOCATOR_STATUS_EMPTY,
	18	LTTNG_INDEX_ALLOCATOR_STATUS_ERROR,
	19	};
	20
	21	struct lttng_index_allocator *lttng_index_allocator_create(
	22	uint64_t index_count);
	23
	24	uint64_t lttng_index_allocator_get_index_count(
	25	struct lttng_index_allocator *allocator);
	26
	27	enum lttng_index_allocator_status lttng_index_allocator_alloc(
	28	struct lttng_index_allocator *allocator,
	29	uint64_t *index);
	30
	31	enum lttng_index_allocator_status lttng_index_allocator_release(
	32	struct lttng_index_allocator *allocator, uint64_t index);
	33
	34	void lttng_index_allocator_destroy(struct lttng_index_allocator *allocator);
	35
	36	#endif /* _COMMON_INDEX_ALLOCATOR_H */