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113 lines
4.0 KiB
C
113 lines
4.0 KiB
C
#ifndef __CMPH_H__
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#define __CMPH_H__
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#include <stdlib.h>
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#include <stdio.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include "cmph_types.h"
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typedef struct __config_t cmph_config_t;
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typedef struct __cmph_t cmph_t;
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typedef struct
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{
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void *data;
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cmph_uint32 nkeys;
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int (*read)(void *, char **, cmph_uint32 *);
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void (*dispose)(void *, char *, cmph_uint32);
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void (*rewind)(void *);
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} cmph_io_adapter_t;
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/** Adapter pattern API **/
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/* please call free() in the created adapters */
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cmph_io_adapter_t *cmph_io_nlfile_adapter(FILE * keys_fd);
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void cmph_io_nlfile_adapter_destroy(cmph_io_adapter_t * key_source);
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cmph_io_adapter_t *cmph_io_nlnkfile_adapter(FILE * keys_fd, cmph_uint32 nkeys);
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void cmph_io_nlnkfile_adapter_destroy(cmph_io_adapter_t * key_source);
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cmph_io_adapter_t *cmph_io_vector_adapter(char ** vector, cmph_uint32 nkeys);
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void cmph_io_vector_adapter_destroy(cmph_io_adapter_t * key_source);
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cmph_io_adapter_t *cmph_io_byte_vector_adapter(cmph_uint8 ** vector, cmph_uint32 nkeys);
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void cmph_io_byte_vector_adapter_destroy(cmph_io_adapter_t * key_source);
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cmph_io_adapter_t *cmph_io_struct_vector_adapter(void * vector,
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cmph_uint32 struct_size,
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cmph_uint32 key_offset,
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cmph_uint32 key_len,
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cmph_uint32 nkeys);
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void cmph_io_struct_vector_adapter_destroy(cmph_io_adapter_t * key_source);
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/** Hash configuration API **/
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cmph_config_t *cmph_config_new(cmph_io_adapter_t *key_source);
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void cmph_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs);
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void cmph_config_set_verbosity(cmph_config_t *mph, cmph_uint32 verbosity);
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void cmph_config_set_graphsize(cmph_config_t *mph, double c);
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void cmph_config_set_algo(cmph_config_t *mph, CMPH_ALGO algo);
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void cmph_config_set_tmp_dir(cmph_config_t *mph, cmph_uint8 *tmp_dir);
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void cmph_config_set_mphf_fd(cmph_config_t *mph, FILE *mphf_fd);
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void cmph_config_set_b(cmph_config_t *mph, cmph_uint32 b);
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void cmph_config_set_keys_per_bin(cmph_config_t *mph, cmph_uint32 keys_per_bin);
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void cmph_config_set_memory_availability(cmph_config_t *mph, cmph_uint32 memory_availability);
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void cmph_config_destroy(cmph_config_t *mph);
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/** Hash API **/
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cmph_t *cmph_new(cmph_config_t *mph);
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/** cmph_uint32 cmph_search(cmph_t *mphf, const char *key, cmph_uint32 keylen);
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* \brief Computes the mphf value.
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* \param mphf pointer to the resulting function
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* \param key is the key to be hashed
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* \param keylen is the key legth in bytes
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* \return The mphf value
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*/
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cmph_uint32 cmph_search(cmph_t *mphf, const char *key, cmph_uint32 keylen);
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cmph_uint32 cmph_size(cmph_t *mphf);
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void cmph_destroy(cmph_t *mphf);
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/** Hash serialization/deserialization */
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int cmph_dump(cmph_t *mphf, FILE *f);
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cmph_t *cmph_load(FILE *f);
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/** \fn void cmph_pack(cmph_t *mphf, void *packed_mphf);
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* \brief Support the ability to pack a perfect hash function into a preallocated contiguous memory space pointed by packed_mphf.
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* \param mphf pointer to the resulting mphf
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* \param packed_mphf pointer to the contiguous memory area used to store the
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* \param resulting mphf. The size of packed_mphf must be at least cmph_packed_size()
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*/
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void cmph_pack(cmph_t *mphf, void *packed_mphf);
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/** \fn cmph_uint32 cmph_packed_size(cmph_t *mphf);
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* \brief Return the amount of space needed to pack mphf.
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* \param mphf pointer to a mphf
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* \return the size of the packed function or zero for failures
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*/
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cmph_uint32 cmph_packed_size(cmph_t *mphf);
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/** cmph_uint32 cmph_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
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* \brief Use the packed mphf to do a search.
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* \param packed_mphf pointer to the packed mphf
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* \param key key to be hashed
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* \param keylen key legth in bytes
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* \return The mphf value
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*/
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cmph_uint32 cmph_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen);
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// TIMING functions. To use the macro CMPH_TIMING must be defined
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#include "cmph_time.h"
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#ifdef __cplusplus
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}
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#endif
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#endif
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