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/*\ 
||| This file a part of Pike, and is copyright by Fredrik Hubinette 
||| Pike is distributed as GPL (General Public License) 
||| See the files COPYING and DISCLAIMER for more information. 
\*/ 
#ifndef MEMORY_H 
#define MEMORY_H 
 
#include "global.h" 
 
#define MEMSEARCH_LINKS 512 
 
struct link 
{ 
  struct link *next; 
  INT32 key, offset; 
}; 
 
enum methods { 
  no_search, 
  use_memchr, 
  memchr_and_memcmp, 
  hubbe_search 
}; 
 
struct mem_searcher 
{ 
  enum methods method; 
  char *needle; 
  SIZE_T needlelen; 
  unsigned INT32 hsize, max; 
  struct link links[MEMSEARCH_LINKS]; 
  struct link *set[MEMSEARCH_LINKS]; 
}; 
 
/* Prototypes begin here */ 
extern char *debug_xalloc(long); 
void swap(char *a, char *b, INT32 size); 
void reverse(char *memory, INT32 nitems, INT32 size); 
void reorder(char *memory, INT32 nitems, INT32 size,INT32 *order); 
unsigned INT32 hashmem(const unsigned char *a,INT32 len,INT32 mlen); 
unsigned INT32 hashstr(const unsigned char *str,INT32 maxn); 
void init_memsearch(struct mem_searcher *s, 
                    char *needle, 
                    SIZE_T needlelen, 
                    SIZE_T max_haystacklen); 
char *memory_search(struct mem_searcher *s, 
                    char *haystack, 
                    SIZE_T haystacklen); 
char *my_memmem(char *needle, 
                SIZE_T needlelen, 
                char *haystack, 
                SIZE_T haystacklen); 
void memfill(char *to, 
             INT32 tolen, 
             char *from, 
             INT32 fromlen, 
             INT32 offset); 
/* Prototypes end here */ 
 
#endif