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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. 
\*/ 
 
/* 
 * $Id: pike_memory.h,v 1.6 1998/10/11 11:18:52 hubbe Exp $ 
 */ 
#ifndef MEMORY_H 
#define MEMORY_H 
 
#include "global.h" 
#include "stralloc.h" 
 
#define MEMSEARCH_LINKS 512 
 
struct link 
{ 
  struct link *next; 
  INT32 key, offset; 
}; 
 
enum methods { 
  no_search, 
  use_memchr, 
  memchr_and_memcmp, 
  hubbe_search, 
  boyer_moore 
}; 
 
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]; 
}; 
 
struct generic_mem_searcher 
{ 
  char needle_shift; 
  char haystack_shift; 
  union data_u 
  { 
    struct mem_searcher eightbit; 
    struct other_search_s 
    { 
      enum methods method; 
      void *needle; 
      SIZE_T needlelen; 
      int first_char; 
    } other; 
  } data; 
}; 
 
#define BLOCK_ALLOC(X,Y) 
#define MEMCHR0 MEMCHR 
 
/* Prototypes begin here */ 
INLINE p_wchar1 *MEMCHR1(p_wchar1 *p,p_wchar1 c,INT32 e); 
INLINE p_wchar2 *MEMCHR2(p_wchar2 *p,p_wchar2 c,INT32 e); 
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); 
void init_generic_memsearcher(struct generic_mem_searcher *s, 
                              void *needle, 
                              SIZE_T needlelen, 
                              char needle_shift, 
                              SIZE_T estimated_haystack, 
                              char haystack_shift); 
void *generic_memory_search(struct generic_mem_searcher *s, 
                            void *haystack, 
                            SIZE_T haystacklen, 
                            char haystack_shift); 
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); 
char *debug_xalloc(long size); 
struct fileloc; 
BLOCK_ALLOC(fileloc, 4090) 
struct memloc; 
BLOCK_ALLOC(memloc, 16382) 
struct memhdr; 
char *do_pad(char *mem, long size); 
void check_pad(struct memhdr *mh, int freeok); 
void low_add_marks_to_memhdr(struct memhdr *to, 
                             struct memhdr *from); 
void add_marks_to_memhdr(struct memhdr *to, void *ptr); 
BLOCK_ALLOC(memhdr,16382) 
 
 
 
 
static struct memhdr *find_memhdr(void *p); 
void *debug_malloc(size_t s, const char *fn, int line); 
void *debug_calloc(size_t a, size_t b, const char *fn, int line); 
void *debug_realloc(void *p, size_t s, const char *fn, int line); 
void debug_free(void *p, const char *fn, int line); 
char *debug_strdup(const char *s, const char *fn, int line); 
void dump_memhdr_locations(struct memhdr *from, 
                           struct memhdr *notfrom); 
void debug_malloc_dump_references(void *x); 
void cleanup_memhdrs(); 
int main(int argc, char *argv[]); 
void * debug_malloc_update_location(void *p,const char *fn, int line); 
void reset_debug_malloc(void); 
/* Prototypes end here */ 
 
#undef BLOCK_ALLOC 
 
#endif