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We don't know anything about most channels, so we create an array of fp16_t containing them. We zero out ones where we do know something, and use the previous code as the slow path. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
43 lines
1.6 KiB
C
43 lines
1.6 KiB
C
#ifndef LIGHTNING_PLUGINS_ASKRENE_RESERVE_H
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#define LIGHTNING_PLUGINS_ASKRENE_RESERVE_H
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/* We have to know what payments are in progress, so we can take into
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* account the reduced capacity of channels. We do this by telling
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* everyone to reserve / unreserve paths as they use them. */
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#include "config.h"
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#include <bitcoin/short_channel_id.h>
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#include <common/amount.h>
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#include <common/fp16.h>
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/* We reserve a path being used. This records how many and how much */
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struct reserve {
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size_t num_htlcs;
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struct short_channel_id_dir scidd;
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struct amount_msat amount;
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};
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/* Initialize hash table for reservations */
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struct reserve_hash *new_reserve_hash(const tal_t *ctx);
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/* Find a reservation for this scidd (if any!) */
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const struct reserve *find_reserve(const struct reserve_hash *reserved,
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const struct short_channel_id_dir *scidd);
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/* Atomically add to reserves, or fail.
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* Returns offset of failure, or num on success */
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size_t reserves_add(struct reserve_hash *reserved,
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const struct short_channel_id_dir *scidds,
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const struct amount_msat *amounts,
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size_t num);
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/* Atomically remove from reserves, to fail.
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* Returns offset of failure or tal_count(scidds) */
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size_t reserves_remove(struct reserve_hash *reserved,
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const struct short_channel_id_dir *scidds,
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const struct amount_msat *amounts,
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size_t num);
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/* Clear capacities array where we have reserves */
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void reserves_clear_capacities(struct reserve_hash *reserved,
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const struct gossmap *gossmap,
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fp16_t *capacities);
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#endif /* LIGHTNING_PLUGINS_ASKRENE_RESERVE_H */
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