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/* |
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* Copyright 2008-2009 Katholieke Universiteit Leuven |
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* |
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* Use of this software is governed by the MIT license |
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* |
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* Written by Sven Verdoolaege, K.U.Leuven, Departement |
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* Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium |
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*/ |
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|
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#ifndef ISL_HASH_H |
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#define ISL_HASH_H |
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|
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#include <stdlib.h> |
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#include <isl/stdint.h> |
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#include <isl/ctx.h> |
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|
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#if defined(__cplusplus) |
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extern "C" { |
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#endif |
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|
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#define isl_hash_init() (2166136261u) |
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#define isl_hash_byte(h,b) do { \ |
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h *= 16777619; \ |
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h ^= b; \ |
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} while(0) |
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#define isl_hash_hash(h,h2) \ |
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do { \ |
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isl_hash_byte(h, (h2) & 0xFF); \ |
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isl_hash_byte(h, ((h2) >> 8) & 0xFF); \ |
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isl_hash_byte(h, ((h2) >> 16) & 0xFF); \ |
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isl_hash_byte(h, ((h2) >> 24) & 0xFF); \ |
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} while(0) |
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#define isl_hash_bits(h,bits) \ |
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((bits) == 32) ? (h) : \ |
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((bits) >= 16) ? \ |
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((h) >> (bits)) ^ ((h) & (((uint32_t)1 << (bits)) - 1)) : \ |
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(((h) >> (bits)) ^ (h)) & (((uint32_t)1 << (bits)) - 1) |
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|
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uint32_t isl_hash_string(uint32_t hash, const char *s); |
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uint32_t isl_hash_mem(uint32_t hash, const void *p, size_t len); |
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|
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#define isl_hash_builtin(h,l) isl_hash_mem(h, &l, sizeof(l)) |
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|
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struct isl_hash_table_entry |
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{ |
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uint32_t hash; |
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void *data; |
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}; |
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|
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struct isl_hash_table { |
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int bits; |
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int n; |
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struct isl_hash_table_entry *entries; |
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}; |
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|
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struct isl_hash_table *isl_hash_table_alloc(struct isl_ctx *ctx, int min_size); |
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void isl_hash_table_free(struct isl_ctx *ctx, struct isl_hash_table *table); |
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|
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int isl_hash_table_init(struct isl_ctx *ctx, struct isl_hash_table *table, |
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int min_size); |
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void isl_hash_table_clear(struct isl_hash_table *table); |
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extern struct isl_hash_table_entry *isl_hash_table_entry_none; |
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struct isl_hash_table_entry *isl_hash_table_find(struct isl_ctx *ctx, |
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struct isl_hash_table *table, |
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uint32_t key_hash, |
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isl_bool (*eq)(const void *entry, const void *val), |
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const void *val, int reserve); |
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isl_stat isl_hash_table_foreach(isl_ctx *ctx, struct isl_hash_table *table, |
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isl_stat (*fn)(void **entry, void *user), void *user); |
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void isl_hash_table_remove(struct isl_ctx *ctx, |
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struct isl_hash_table *table, |
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struct isl_hash_table_entry *entry); |
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|
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#if defined(__cplusplus) |
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} |
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#endif |
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|
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#endif |
