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/* Copyright (C) CZ.NIC, z.s.p.o. <knot-resolver@labs.nic.cz>
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#include <stdbool.h>
#include "lib/defines.h"
#include "lib/utils.h"
struct kr_request;
/** Initialize rate-limiting with shared mmapped memory.
* The existing data are used if another instance is already using the file
* and it was initialized with the same parameters; it fails on mismatch. */
KR_EXPORT
int ratelimiting_init(const char *mmap_file, size_t capacity, uint32_t instant_limit, uint32_t rate_limit, uint16_t slip);
/** Do rate-limiting, during knot_layer_api::begin. */
KR_EXPORT
bool ratelimiting_request_begin(struct kr_request *req);
/** Remove mmapped file data if not used by other processes. */
KR_EXPORT
void ratelimiting_deinit(void);
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