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// Copyright (c) 2011, Cornell University
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of HyperDex nor the names of its contributors may be
// used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
#ifndef hyperdisk_shard_constants_h_
#define hyperdisk_shard_constants_h_
// Keep this a power of two or else change HASH_INTO_TABLE
#define HASH_TABLE_ENTRIES 65536
#define HASH_TABLE_ENTRY_SIZE 8
#define HASH_TABLE_SIZE (HASH_TABLE_ENTRIES * HASH_TABLE_ENTRY_SIZE)
#define SEARCH_INDEX_ENTRIES 32768
#define SEARCH_INDEX_ENTRY_SIZE 32
#define SEARCH_INDEX_SIZE (SEARCH_INDEX_ENTRIES * SEARCH_INDEX_ENTRY_SIZE)
#define INDEX_SEGMENT_SIZE (HASH_TABLE_SIZE + SEARCH_INDEX_SIZE)
#define DATA_SEGMENT_SIZE (SEARCH_INDEX_ENTRIES * 1024)
#define FILE_SIZE (INDEX_SEGMENT_SIZE + DATA_SEGMENT_SIZE)
#define HASH_INTO_TABLE(X) ((X) & (HASH_TABLE_ENTRIES - 1))
#if SEARCH_INDEX_ENTRIES > HASH_TABLE_ENTRIES
#error There must be more entries in the hash table than SEARCH_INDEX_ENTRIES.
#endif
#define HASH_OFFSET_INVALID static_cast<uint32_t>(1 << 31)
#endif // hyperdisk_shard_h_