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Allocate SQL functions on heap, not end of struct.

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Allocating the functions hash_t struct as an extension to the dbsql_db_t struct
was foolish.  Allocate it on the heap, remember to free it when we close the
database.
This commit is contained in:
Gregory Burd 2007-10-21 01:24:20 +01:00
parent 89646d2c84
commit ed5cf2a8d3
3 changed files with 20 additions and 15 deletions
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26
src/api.c
View file

@ -414,7 +414,7 @@ __api_open(dbp, filename, mode, err_msgs)
dbp->nDb = 2;
if (__dbsql_calloc(dbp, 2, sizeof(dbsql_db_t), &dbp->aDb) == ENOMEM)
goto no_mem_on_open;
goto no_mem_on_open1;
if (filename[0] == ':' && strcmp(filename, ":memory:") == 0)
mem = 1;
@ -435,13 +435,15 @@ __api_open(dbp, filename, mode, err_msgs)
dbp->aDb[1].zName = "temp";
/* Attempt to read the schema. */
__hash_init((hash_t*)dbp->aFunc, DBSQL_HASH_STRING, 1);
if (__dbsql_calloc(dbp, 1, sizeof(hash_t), &dbp->fns) == ENOMEM)
goto no_mem_on_open2;
__hash_init((hash_t*)dbp->fns, DBSQL_HASH_STRING, 1);
__register_builtin_funcs(dbp);
rc = __init_databases(dbp, err_msgs);
dbp->magic = DBSQL_STATUS_OPEN;
if (rc == ENOMEM) {
dbp->close(dbp);
goto no_mem_on_open;
goto no_mem_on_open2;
} else if (rc != DBSQL_SUCCESS && rc != DBSQL_BUSY) {
dbp->close(dbp);
__str_urealloc(err_msgs);
@ -454,7 +456,9 @@ __api_open(dbp, filename, mode, err_msgs)
/* Return a pointer to the newly opened database structure */
return DBSQL_SUCCESS;
no_mem_on_open:
no_mem_on_open2:
__dbsql_free(NULL, dbp);
no_mem_on_open1:
__str_append(err_msgs, "out of memory", (char*)0);
__str_urealloc(err_msgs);
return DBSQL_NOMEM;
@ -531,7 +535,7 @@ __api_close(dbp)
}
__reset_internal_schema(dbp, 0);
DBSQL_ASSERT(dbp->nDb <= 2);
for (i = __hash_first((hash_t*)dbp->aFunc); i; i = __hash_next(i)){
for (i = __hash_first((hash_t*)dbp->fns); i; i = __hash_next(i)){
func_def_t *func, *next;
for (func = (func_def_t*)__hash_data(i); func; func = next){
next = func->pNext;
@ -541,8 +545,9 @@ __api_close(dbp)
if (dbp->dbsql_errpfx)
__dbsql_free(dbp, dbp->dbsql_errpfx);
__dbsql_free(dbp, dbp->aDb);
__hash_clear((hash_t*)dbp->aFunc);
__dbsql_free(dbp, dbp);
__hash_clear((hash_t*)dbp->fns);
__dbsql_free(dbp, dbp->fns);
__dbsql_free(NULL, dbp);
return DBSQL_SUCCESS;
}
@ -1161,7 +1166,7 @@ __api_func_return_type(dbp, name, data_type)
const char *name;
int data_type;
{
func_def_t *p = (func_def_t*)__hash_find((hash_t*)dbp->aFunc, name,
func_def_t *p = (func_def_t*)__hash_find((hash_t*)dbp->fns, name,
strlen(name));
while(p) {
p->dataType = data_type;
@ -1438,12 +1443,9 @@ dbsql_create(dbpp, dbenv, flags)
DBSQL_GLOBAL(encoding) = "iso8859";
#endif
if (__dbsql_calloc(NULL, 1, sizeof(DBSQL) + sizeof(hash_t), &dbp)
== ENOMEM)
if (__dbsql_calloc(NULL, 1, sizeof(DBSQL), &dbp) == ENOMEM)
return DBSQL_NOMEM;
dbp->aFunc = dbp + sizeof(DBSQL);
if (LF_ISSET(DBSQL_THREAD))
F_SET(dbp, DBSQL_Threaded);
if (LF_ISSET(DBSQL_DURABLE_TEMP))

7
src/cg_expr.c
View file

@ -1949,7 +1949,10 @@ __find_function(dbp, name, len, nargs, create)
int create;
{
func_def_t *first, *p, *maybe;
first = p = (func_def_t *)__hash_find((hash_t*)dbp->aFunc, name, len);
DBSQL_ASSERT(dbp->fns != 0);
p = (func_def_t *)__hash_find((hash_t*)dbp->fns, name, len);
first = p;
if (p && !create && nargs < 0) {
while (p && p->xFunc==0 && p->xStep == 0) {
p = p->pNext;
@ -1974,7 +1977,7 @@ __find_function(dbp, name, len, nargs, create)
p->nArg = nargs;
p->pNext = first;
p->dataType = first ? first->dataType : DBSQL_NUMERIC;
__hash_insert((hash_t*)dbp->aFunc, name, len, (void*)p);
__hash_insert((hash_t*)dbp->fns, name, len, (void*)p);
}
return p;
}

2
src/dbsql.in
View file

@ -353,7 +353,7 @@ struct __dbsql {
int (*xBusyCallback)(DBSQL *, void *, const char*, int);
void *pCommitArg; /* Argument to xCommitCallback() */
int (*xCommitCallback)(void*);/* Invoked at every commit. */
void *aFunc; /* All functions that can be in SQL exprs */
void *fns; /* All functions that can be in SQL exprs */
int lastRowid; /* ROWID of most recent insert */
int priorNewRowid; /* Last generated ROWID */
int onError; /* Default conflict algorithm */