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53 lines
2.8 KiB
C
53 lines
2.8 KiB
C
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// Copyright (c) 2018, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#pragma once
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#include <stdint.h>
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namespace tools
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{
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static constexpr uint32_t PRUNING_SEED_LOG_STRIPES_SHIFT = 7;
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static constexpr uint32_t PRUNING_SEED_LOG_STRIPES_MASK = 0x7;
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static constexpr uint32_t PRUNING_SEED_STRIPE_SHIFT = 0;
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static constexpr uint32_t PRUNING_SEED_STRIPE_MASK = 0x7f;
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constexpr inline uint32_t get_pruning_log_stripes(uint32_t pruning_seed) { return (pruning_seed >> PRUNING_SEED_LOG_STRIPES_SHIFT) & PRUNING_SEED_LOG_STRIPES_MASK; }
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inline uint32_t get_pruning_stripe(uint32_t pruning_seed) { if (pruning_seed == 0) return 0; return 1 + ((pruning_seed >> PRUNING_SEED_STRIPE_SHIFT) & PRUNING_SEED_STRIPE_MASK); }
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uint32_t make_pruning_seed(uint32_t stripe, uint32_t log_stripes);
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bool has_unpruned_block(uint64_t block_height, uint64_t blockchain_height, uint32_t pruning_seed);
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uint32_t get_pruning_stripe(uint64_t block_height, uint64_t blockchain_height, uint32_t log_stripes);
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uint32_t get_pruning_seed(uint64_t block_height, uint64_t blockchain_height, uint32_t log_stripes);
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uint64_t get_next_unpruned_block_height(uint64_t block_height, uint64_t blockchain_height, uint32_t pruning_seed);
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uint64_t get_next_pruned_block_height(uint64_t block_height, uint64_t blockchain_height, uint32_t pruning_seed);
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uint32_t get_random_stripe();
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}
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