ComputerSurge/bind9
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undefine action; assertions

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This commit is contained in:
Bob Halley
1998-12-18 21:17:37 +00:00
parent 06c29e22e0
commit f058f96484
1 changed files with 32 additions and 18 deletions
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50
lib/isc/symtab.c
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@@ -23,24 +23,33 @@
#include <isc/list.h>
#include <isc/symtab.h>
#include "util.h"
typedef struct elt {
char * key;
unsigned int type;
isc_symvalue_t value;
isc_symvalue_t value;
LINK(struct elt) link;
} elt_t;
typedef LIST(elt_t) eltlist_t;
#define SYMTAB_MAGIC 0x53796D54U /* SymT. */
#define VALID_SYMTAB(st) ((st) != NULL && \
(st)->magic == SYMTAB_MAGIC)
struct isc_symtab {
/* Unlocked. */
unsigned int magic;
isc_mem_t * mctx;
unsigned int size;
eltlist_t * table;
LIST(isc_symtabaction_t) undefine_actions;
isc_symtabaction_t undefine_action;
};
isc_result_t
isc_symtab_create(isc_mem_t *mctx, unsigned int size,
isc_symtabaction_t undefine_action,
isc_symtab_t **symtabp)
{
isc_symtab_t *symtab;
@@ -63,42 +72,37 @@ isc_symtab_create(isc_mem_t *mctx, unsigned int size,
INIT_LIST(symtab->table[i]);
symtab->mctx = mctx;
symtab->size = size;
INIT_LIST(symtab->undefine_actions);
symtab->undefine_action = undefine_action;
symtab->magic = SYMTAB_MAGIC;
*symtabp = symtab;
return (ISC_R_SUCCESS);
}
isc_result_t
isc_symtab_onundefine(isc_symtab_t *symtab, unsigned int type,
isc_symtabaction_t action) {
/* REQUIRE(VALID_SYMTAB(symtab)); */
/* malloc structure, link onto action list */
return (ISC_R_SUCCESS);
}
void
isc_symtab_destroy(isc_symtab_t **symtabp) {
isc_symtab_t *symtab;
unsigned int i;
elt_t *elt, *nelt;
/* XXX REQUIRE XXX */
REQUIRE(symtabp != NULL);
symtab = *symtabp;
REQUIRE(VALID_SYMTAB(symtab));
for (i = 0; i < symtab->size; i++) {
for (elt = HEAD(symtab->table[i]); elt != NULL; elt = nelt) {
nelt = NEXT(elt, link);
/* XXX call undefine action here */
if (symtab->undefine_action != NULL)
(symtab->undefine_action)(elt->key,
elt->type,
elt->value);
isc_mem_put(symtab->mctx, elt, sizeof *elt);
}
}
isc_mem_put(symtab->mctx, symtab->table,
symtab->size * sizeof (eltlist_t));
symtab->magic = 0;
isc_mem_put(symtab->mctx, symtab, sizeof *symtab);
*symtabp = NULL;
@@ -146,6 +150,9 @@ isc_symtab_lookup(isc_symtab_t *symtab, const char *key, unsigned int type,
unsigned int bucket;
elt_t *elt;
REQUIRE(VALID_SYMTAB(symtab));
REQUIRE(key != NULL);
FIND(symtab, key, type, bucket, elt);
if (elt == NULL)
@@ -164,6 +171,9 @@ isc_symtab_define(isc_symtab_t *symtab, char *key, unsigned int type,
unsigned int bucket;
elt_t *elt;
REQUIRE(VALID_SYMTAB(symtab));
REQUIRE(key != NULL);
FIND(symtab, key, type, bucket, elt);
if (elt != NULL)
@@ -175,6 +185,7 @@ isc_symtab_define(isc_symtab_t *symtab, char *key, unsigned int type,
elt->key = key;
elt->type = type;
elt->value = value;
APPEND(symtab->table[bucket], elt, link);
return (ISC_R_SUCCESS);
@@ -185,13 +196,16 @@ isc_symtab_undefine(isc_symtab_t *symtab, char *key, unsigned int type) {
unsigned int bucket;
elt_t *elt;
REQUIRE(VALID_SYMTAB(symtab));
REQUIRE(key != NULL);
FIND(symtab, key, type, bucket, elt);
if (elt == NULL)
return (ISC_R_NOTFOUND);
/* XXX call undefine routines here */
if (symtab->undefine_action != NULL)
(symtab->undefine_action)(elt->key, elt->type, elt->value);
UNLINK(symtab->table[bucket], elt, link);
isc_mem_put(symtab->mctx, elt, sizeof *elt);