blockdb.h
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blockdb.h
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	// Copyright 2020 The Bitcoin developers
	// Distributed under the MIT software license, see the accompanying
	// file COPYING or http://www.opensource.org/licenses/mit-license.php.

	#ifndef BITCOIN_BLOCKDB_H
	#define BITCOIN_BLOCKDB_H

	#include <flatfile.h>

	namespace Consensus {
	struct Params;
	}

	class CBlock;
	class CBlockIndex;

	/** The pre-allocation chunk size for blk?????.dat files (since 0.8) */
	static constexpr unsigned int BLOCKFILE_CHUNK_SIZE = 0x1000000; // 16 MiB
	/** The pre-allocation chunk size for rev?????.dat files (since 0.8) */
	static const unsigned int UNDOFILE_CHUNK_SIZE = 0x100000; // 1 MiB

	FlatFileSeq BlockFileSeq();
	FlatFileSeq UndoFileSeq();
	FILE *OpenUndoFile(const FlatFilePos &pos, bool fReadOnly = false);

	/**
	* Translation to a filesystem path.
	*/
	fs::path GetBlockPosFilename(const FlatFilePos &pos);

	/**
	* Open a block file (blk?????.dat).
	*/
	FILE *OpenBlockFile(const FlatFilePos &pos, bool fReadOnly = false);

	#endif // BITCOIN_BLOCKDB_H