diff options
Diffstat (limited to 'include/ruby/st.h')
| -rw-r--r-- | include/ruby/st.h | 210 |
1 files changed, 126 insertions, 84 deletions
diff --git a/include/ruby/st.h b/include/ruby/st.h index c2294a92c1..f35ab43603 100644 --- a/include/ruby/st.h +++ b/include/ruby/st.h @@ -1,6 +1,8 @@ -/* This is a public domain general purpose hash table package written by Peter Moore @ UCB. */ +/* This is a public domain general purpose hash table package + originally written by Peter Moore @ UCB. -/* @(#) st.h 5.1 89/12/14 */ + The hash table data structures were redesigned and the package was + rewritten by Vladimir Makarov <vmakarov@redhat.com>. */ #ifndef RUBY_ST_H #define RUBY_ST_H 1 @@ -14,22 +16,7 @@ extern "C" { #include "ruby/defines.h" -#if defined STDC_HEADERS -#include <stddef.h> -#elif defined HAVE_STDLIB_H -#include <stdlib.h> -#endif - -#ifdef HAVE_STDINT_H -# include <stdint.h> -#endif -#ifdef HAVE_INTTYPES_H -# include <inttypes.h> -#endif - -#if defined __GNUC__ && __GNUC__ >= 4 -#pragma GCC visibility push(default) -#endif +RUBY_SYMBOL_EXPORT_BEGIN #if SIZEOF_LONG == SIZEOF_VOIDP typedef unsigned long st_data_t; @@ -61,6 +48,10 @@ typedef unsigned LONG_LONG st_data_t; typedef struct st_table st_table; typedef st_data_t st_index_t; + +/* Maximal value of unsigned integer type st_index_t. */ +#define MAX_ST_INDEX_VAL (~(st_index_t) 0) + typedef int st_compare_func(st_data_t, st_data_t); typedef st_index_t st_hash_func(st_data_t); @@ -68,84 +59,135 @@ typedef char st_check_for_sizeof_st_index_t[SIZEOF_VOIDP == (int)sizeof(st_index #define SIZEOF_ST_INDEX_T SIZEOF_VOIDP struct st_hash_type { - int (*compare)(ANYARGS /*st_data_t, st_data_t*/); /* st_compare_func* */ - st_index_t (*hash)(ANYARGS /*st_data_t*/); /* st_hash_func* */ + int (*compare)(st_data_t, st_data_t); /* st_compare_func* */ + st_index_t (*hash)(st_data_t); /* st_hash_func* */ }; -#define ST_INDEX_BITS (sizeof(st_index_t) * CHAR_BIT) +#define ST_INDEX_BITS (SIZEOF_ST_INDEX_T * CHAR_BIT) + +#if defined(HAVE_BUILTIN___BUILTIN_CHOOSE_EXPR) && defined(HAVE_BUILTIN___BUILTIN_TYPES_COMPATIBLE_P) +# define ST_DATA_COMPATIBLE_P(type) \ + __builtin_choose_expr(__builtin_types_compatible_p(type, st_data_t), 1, 0) +#else +# define ST_DATA_COMPATIBLE_P(type) 0 +#endif + +typedef struct st_table_entry st_table_entry; + +struct st_table_entry; /* defined in st.c */ struct st_table { + /* Cached features of the table -- see st.c for more details. */ + unsigned char entry_power, bin_power, size_ind; + /* How many times the table was rebuilt. */ + unsigned int rebuilds_num; const struct st_hash_type *type; - st_index_t num_bins; - unsigned int entries_packed : 1; -#ifdef __GNUC__ - /* - * C spec says, - * A bit-field shall have a type that is a qualified or unqualified - * version of _Bool, signed int, unsigned int, or some other - * implementation-defined type. It is implementation-defined whether - * atomic types are permitted. - * In short, long and long long bit-field are implementation-defined - * feature. Therefore we want to supress a warning explicitly. - */ - __extension__ -#endif - st_index_t num_entries : ST_INDEX_BITS - 1; - union { - struct { - struct st_table_entry **bins; - struct st_table_entry *head, *tail; - } big; - struct { - struct st_packed_entry *entries; - st_index_t real_entries; - } packed; - } as; + /* Number of entries currently in the table. */ + st_index_t num_entries; + /* Array of bins used for access by keys. */ + st_index_t *bins; + /* Start and bound index of entries in array entries. + entries_starts and entries_bound are in interval + [0,allocated_entries]. */ + st_index_t entries_start, entries_bound; + /* Array of size 2^entry_power. */ + st_table_entry *entries; }; #define st_is_member(table,key) st_lookup((table),(key),(st_data_t *)0) -enum st_retval {ST_CONTINUE, ST_STOP, ST_DELETE, ST_CHECK}; - -st_table *st_init_table(const struct st_hash_type *); -st_table *st_init_table_with_size(const struct st_hash_type *, st_index_t); -st_table *st_init_numtable(void); -st_table *st_init_numtable_with_size(st_index_t); -st_table *st_init_strtable(void); -st_table *st_init_strtable_with_size(st_index_t); -st_table *st_init_strcasetable(void); -st_table *st_init_strcasetable_with_size(st_index_t); -int st_delete(st_table *, st_data_t *, st_data_t *); /* returns 0:notfound 1:deleted */ -int st_delete_safe(st_table *, st_data_t *, st_data_t *, st_data_t); -int st_insert(st_table *, st_data_t, st_data_t); -int st_insert2(st_table *, st_data_t, st_data_t, st_data_t (*)(st_data_t)); -int st_lookup(st_table *, st_data_t, st_data_t *); -int st_get_key(st_table *, st_data_t, st_data_t *); +enum st_retval {ST_CONTINUE, ST_STOP, ST_DELETE, ST_CHECK, ST_REPLACE}; + +size_t rb_st_table_size(const struct st_table *tbl); +#define st_table_size rb_st_table_size +st_table *rb_st_init_table(const struct st_hash_type *); +#define st_init_table rb_st_init_table +st_table *rb_st_init_table_with_size(const struct st_hash_type *, st_index_t); +#define st_init_table_with_size rb_st_init_table_with_size +st_table *rb_st_init_numtable(void); +#define st_init_numtable rb_st_init_numtable +st_table *rb_st_init_numtable_with_size(st_index_t); +#define st_init_numtable_with_size rb_st_init_numtable_with_size +st_table *rb_st_init_strtable(void); +#define st_init_strtable rb_st_init_strtable +st_table *rb_st_init_strtable_with_size(st_index_t); +#define st_init_strtable_with_size rb_st_init_strtable_with_size +st_table *rb_st_init_strcasetable(void); +#define st_init_strcasetable rb_st_init_strcasetable +st_table *rb_st_init_strcasetable_with_size(st_index_t); +#define st_init_strcasetable_with_size rb_st_init_strcasetable_with_size +int rb_st_delete(st_table *, st_data_t *, st_data_t *); /* returns 0:notfound 1:deleted */ +#define st_delete rb_st_delete +int rb_st_delete_safe(st_table *, st_data_t *, st_data_t *, st_data_t); +#define st_delete_safe rb_st_delete_safe +int rb_st_shift(st_table *, st_data_t *, st_data_t *); /* returns 0:notfound 1:deleted */ +#define st_shift rb_st_shift +int rb_st_insert(st_table *, st_data_t, st_data_t); +#define st_insert rb_st_insert +int rb_st_insert2(st_table *, st_data_t, st_data_t, st_data_t (*)(st_data_t)); +#define st_insert2 rb_st_insert2 +int rb_st_lookup(st_table *, st_data_t, st_data_t *); +#define st_lookup rb_st_lookup +int rb_st_get_key(st_table *, st_data_t, st_data_t *); +#define st_get_key rb_st_get_key typedef int st_update_callback_func(st_data_t *key, st_data_t *value, st_data_t arg, int existing); -int st_update(st_table *table, st_data_t key, st_update_callback_func *func, st_data_t arg); -int st_foreach(st_table *, int (*)(ANYARGS), st_data_t); -int st_foreach_check(st_table *, int (*)(ANYARGS), st_data_t, st_data_t); -int st_reverse_foreach(st_table *, int (*)(ANYARGS), st_data_t); -void st_add_direct(st_table *, st_data_t, st_data_t); -void st_free_table(st_table *); -void st_cleanup_safe(st_table *, st_data_t); -void st_clear(st_table *); -st_table *st_copy(st_table *); -int st_numcmp(st_data_t, st_data_t); -st_index_t st_numhash(st_data_t); -int st_strcasecmp(const char *s1, const char *s2); -int st_strncasecmp(const char *s1, const char *s2, size_t n); -size_t st_memsize(const st_table *); -st_index_t st_hash(const void *ptr, size_t len, st_index_t h); -st_index_t st_hash_uint32(st_index_t h, uint32_t i); -st_index_t st_hash_uint(st_index_t h, st_index_t i); -st_index_t st_hash_end(st_index_t h); -st_index_t st_hash_start(st_index_t h); +/* *key may be altered, but must equal to the old key, i.e., the + * results of hash() are same and compare() returns 0, otherwise the + * behavior is undefined */ +int rb_st_update(st_table *table, st_data_t key, st_update_callback_func *func, st_data_t arg); +#define st_update rb_st_update +typedef int st_foreach_callback_func(st_data_t, st_data_t, st_data_t); +typedef int st_foreach_check_callback_func(st_data_t, st_data_t, st_data_t, int); +int rb_st_foreach_with_replace(st_table *tab, st_foreach_check_callback_func *func, st_update_callback_func *replace, st_data_t arg); +#define st_foreach_with_replace rb_st_foreach_with_replace +int rb_st_foreach(st_table *, st_foreach_callback_func *, st_data_t); +#define st_foreach rb_st_foreach +int rb_st_foreach_check(st_table *, st_foreach_check_callback_func *, st_data_t, st_data_t); +#define st_foreach_check rb_st_foreach_check +st_index_t rb_st_keys(st_table *table, st_data_t *keys, st_index_t size); +#define st_keys rb_st_keys +st_index_t rb_st_keys_check(st_table *table, st_data_t *keys, st_index_t size, st_data_t never); +#define st_keys_check rb_st_keys_check +st_index_t rb_st_values(st_table *table, st_data_t *values, st_index_t size); +#define st_values rb_st_values +st_index_t rb_st_values_check(st_table *table, st_data_t *values, st_index_t size, st_data_t never); +#define st_values_check rb_st_values_check +void rb_st_add_direct(st_table *, st_data_t, st_data_t); +#define st_add_direct rb_st_add_direct +void rb_st_free_table(st_table *); +#define st_free_table rb_st_free_table +void rb_st_cleanup_safe(st_table *, st_data_t); +#define st_cleanup_safe rb_st_cleanup_safe +void rb_st_clear(st_table *); +#define st_clear rb_st_clear +st_table *rb_st_copy(st_table *); +#define st_copy rb_st_copy +CONSTFUNC(int rb_st_numcmp(st_data_t, st_data_t)); +#define st_numcmp rb_st_numcmp +CONSTFUNC(st_index_t rb_st_numhash(st_data_t)); +#define st_numhash rb_st_numhash +PUREFUNC(int rb_st_locale_insensitive_strcasecmp(const char *s1, const char *s2)); +#define st_locale_insensitive_strcasecmp rb_st_locale_insensitive_strcasecmp +PUREFUNC(int rb_st_locale_insensitive_strncasecmp(const char *s1, const char *s2, size_t n)); +#define st_locale_insensitive_strncasecmp rb_st_locale_insensitive_strncasecmp +#define st_strcasecmp rb_st_locale_insensitive_strcasecmp +#define st_strncasecmp rb_st_locale_insensitive_strncasecmp +PUREFUNC(size_t rb_st_memsize(const st_table *)); +#define st_memsize rb_st_memsize +PUREFUNC(st_index_t rb_st_hash(const void *ptr, size_t len, st_index_t h)); +#define st_hash rb_st_hash +CONSTFUNC(st_index_t rb_st_hash_uint32(st_index_t h, uint32_t i)); +#define st_hash_uint32 rb_st_hash_uint32 +CONSTFUNC(st_index_t rb_st_hash_uint(st_index_t h, st_index_t i)); +#define st_hash_uint rb_st_hash_uint +CONSTFUNC(st_index_t rb_st_hash_end(st_index_t h)); +#define st_hash_end rb_st_hash_end +CONSTFUNC(st_index_t rb_st_hash_start(st_index_t h)); #define st_hash_start(h) ((st_index_t)(h)) -#if defined __GNUC__ && __GNUC__ >= 4 -#pragma GCC visibility pop -#endif +void rb_hash_bulk_insert_into_st_table(long, const VALUE *, VALUE); + +RUBY_SYMBOL_EXPORT_END #if defined(__cplusplus) #if 0 |