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Add assertions in the quest to track down a refcount leak. 

(closes issue #14485)
 Reported by: davevg


git-svn-id: http://svn.digium.com/svn/asterisk/trunk@176592 f38db490-d61c-443f-a65b-d21fe96a405b
This commit is contained in:
tilghman 2009-02-17 18:49:20 +00:00
parent b6cc1075c4
commit 2a22b3a479
2 changed files with 49 additions and 11 deletions
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27
funcs/func_odbc.c
View File

@ -338,8 +338,10 @@ static int acf_odbc_write(struct ast_channel *chan, const char *cmd, char *s, co
SQLCloseCursor(stmt);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
}
if (obj)
if (obj) {
ast_odbc_release_obj(obj);
obj = NULL;
}
if (chan)
ast_autoservice_stop(chan);
@ -443,6 +445,7 @@ static int acf_odbc_read(struct ast_channel *chan, const char *cmd, char *s, cha
ast_log(LOG_ERROR, "Unable to execute query [%s]\n", ast_str_buffer(sql));
if (obj) {
ast_odbc_release_obj(obj);
obj = NULL;
}
pbx_builtin_setvar_helper(chan, "ODBCROWS", rowcount);
if (chan) {
@ -460,6 +463,7 @@ static int acf_odbc_read(struct ast_channel *chan, const char *cmd, char *s, cha
SQLCloseCursor(stmt);
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
obj = NULL;
pbx_builtin_setvar_helper(chan, "ODBCROWS", rowcount);
if (chan) {
ast_autoservice_stop(chan);
@ -486,6 +490,7 @@ static int acf_odbc_read(struct ast_channel *chan, const char *cmd, char *s, cha
SQLCloseCursor(stmt);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
obj = NULL;
pbx_builtin_setvar_helper(chan, "ODBCROWS", rowcount);
pbx_builtin_setvar_helper(chan, "ODBCSTATUS", status);
if (chan)
@ -528,6 +533,7 @@ static int acf_odbc_read(struct ast_channel *chan, const char *cmd, char *s, cha
SQLCloseCursor(stmt);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
obj = NULL;
pbx_builtin_setvar_helper(chan, "ODBCROWS", rowcount);
pbx_builtin_setvar_helper(chan, "ODBCSTATUS", "MEMERROR");
if (chan)
@ -625,6 +631,7 @@ end_acf_read:
SQLCloseCursor(stmt);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
obj = NULL;
if (chan)
ast_autoservice_stop(chan);
if (bogus_chan)
@ -637,6 +644,7 @@ end_acf_read:
SQLCloseCursor(stmt);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
obj = NULL;
if (chan)
ast_autoservice_stop(chan);
if (bogus_chan)
@ -1056,6 +1064,7 @@ static char *cli_odbc_read(struct ast_cli_entry *e, int cmd, struct ast_cli_args
ast_debug(1, "Got obj\n");
if (!(stmt = ast_odbc_direct_execute(obj, generic_execute, ast_str_buffer(sql)))) {
ast_odbc_release_obj(obj);
obj = NULL;
continue;
}
@ -1067,6 +1076,7 @@ static char *cli_odbc_read(struct ast_cli_entry *e, int cmd, struct ast_cli_args
SQLCloseCursor(stmt);
SQLFreeHandle (SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
obj = NULL;
AST_RWLIST_UNLOCK(&queries);
return CLI_SUCCESS;
}
@ -1076,6 +1086,7 @@ static char *cli_odbc_read(struct ast_cli_entry *e, int cmd, struct ast_cli_args
SQLCloseCursor(stmt);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
obj = NULL;
if (res == SQL_NO_DATA) {
ast_cli(a->fd, "Returned %d rows. Query executed on handle %d:%s [%s]\n", rows, dsn, query->readhandle[dsn], ast_str_buffer(sql));
break;
@ -1103,27 +1114,33 @@ static char *cli_odbc_read(struct ast_cli_entry *e, int cmd, struct ast_cli_args
SQLCloseCursor(stmt);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
obj = NULL;
AST_RWLIST_UNLOCK(&queries);
return CLI_SUCCESS;
}
ast_cli(a->fd, "%-20.20s %s\n", colname, ast_str_buffer(coldata));
}
rows++;
/* Get next row */
res = SQLFetch(stmt);
if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
break;
}
ast_cli(a->fd, "%-20.20s %s\n", "----------", "----------");
rows++;
}
SQLCloseCursor(stmt);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
ast_cli(a->fd, "Returned %d rows. Query executed on handle %d [%s]\n", rows, dsn, query->readhandle[dsn]);
obj = NULL;
ast_cli(a->fd, "Returned %d row%s. Query executed on handle %d [%s]\n", rows, rows == 1 ? "" : "s", dsn, query->readhandle[dsn]);
break;
}
ast_odbc_release_obj(obj);
if (obj) {
ast_odbc_release_obj(obj);
obj = NULL;
}
if (!executed) {
ast_cli(a->fd, "Failed to execute query. [%s]\n", ast_str_buffer(sql));
@ -1252,6 +1269,7 @@ static char *cli_odbc_write(struct ast_cli_entry *e, int cmd, struct ast_cli_arg
}
if (!(stmt = ast_odbc_direct_execute(obj, generic_execute, ast_str_buffer(sql)))) {
ast_odbc_release_obj(obj);
obj = NULL;
continue;
}
@ -1259,6 +1277,7 @@ static char *cli_odbc_write(struct ast_cli_entry *e, int cmd, struct ast_cli_arg
SQLCloseCursor(stmt);
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
ast_odbc_release_obj(obj);
obj = NULL;
ast_cli(a->fd, "Affected %d rows. Query executed on handle %d [%s]\n", (int)rows, dsn, query->writehandle[dsn]);
executed = 1;
break;

33
res/res_odbc.c
View File

@ -100,9 +100,11 @@ static int null_hash_fn(const void *obj, const int flags)
static void odbc_obj_destructor(void *data)
{
struct odbc_obj *obj = data;
struct odbc_class *class = obj->parent;
obj->parent = NULL;
odbc_obj_disconnect(obj);
ast_mutex_destroy(&obj->lock);
ao2_ref(obj->parent, -1);
ao2_ref(class, -1);
}
static void destroy_table_cache(struct odbc_cache_tables *table) {
@ -573,10 +575,11 @@ static char *handle_cli_odbc_show(struct ast_cli_entry *e, int cmd, struct ast_c
while ((class = ao2_iterator_next(&aoi))) {
if (!strncasecmp(a->word, class->name, length) && ++which > a->n) {
ret = ast_strdup(class->name);
ao2_ref(class, -1);
break;
}
ao2_ref(class, -1);
if (ret) {
break;
}
}
if (!ret && !strncasecmp(a->word, "all", length) && ++which > a->n) {
ret = ast_strdup("all");
@ -691,6 +694,8 @@ struct odbc_obj *ast_odbc_request_obj(const char *name, int check)
if (!class)
return NULL;
ast_assert(ao2_ref(class, 0) > 1);
if (class->haspool) {
/* Recycle connections before building another */
aoi = ao2_iterator_init(class->obj_container, 0);
@ -704,6 +709,10 @@ struct odbc_obj *ast_odbc_request_obj(const char *name, int check)
ao2_ref(obj, -1);
}
if (obj) {
ast_assert(ao2_ref(obj, 0) > 1);
}
if (!obj && (class->count < class->limit)) {
class->count++;
obj = ao2_alloc(sizeof(*obj), odbc_obj_destructor);
@ -711,12 +720,14 @@ struct odbc_obj *ast_odbc_request_obj(const char *name, int check)
ao2_ref(class, -1);
return NULL;
}
ast_assert(ao2_ref(obj, 0) == 1);
ast_mutex_init(&obj->lock);
/* obj inherits the outstanding reference to class */
obj->parent = class;
if (odbc_obj_connect(obj) == ODBC_FAIL) {
ast_log(LOG_WARNING, "Failed to connect to %s\n", name);
ao2_ref(obj, -1);
ast_assert(ao2_ref(class, 0) > 0);
obj = NULL;
} else {
obj->used = 1;
@ -738,12 +749,14 @@ struct odbc_obj *ast_odbc_request_obj(const char *name, int check)
if (obj) {
/* Object is not constructed, so delete outstanding reference to class. */
ast_assert(ao2_ref(class, 0) > 1);
ao2_ref(class, -1);
class = NULL;
} else {
/* No entry: build one */
obj = ao2_alloc(sizeof(*obj), odbc_obj_destructor);
if (!obj) {
ast_assert(ao2_ref(class, 0) > 1);
ao2_ref(class, -1);
return NULL;
}
@ -756,6 +769,7 @@ struct odbc_obj *ast_odbc_request_obj(const char *name, int check)
obj = NULL;
} else {
ao2_link(class->obj_container, obj);
ast_assert(ao2_ref(obj, 0) > 1);
}
class = NULL;
}
@ -775,6 +789,9 @@ struct odbc_obj *ast_odbc_request_obj(const char *name, int check)
#endif
ast_assert(class == NULL);
if (obj) {
ast_assert(ao2_ref(obj, 0) > 1);
}
return obj;
}
@ -794,10 +811,12 @@ static odbc_status odbc_obj_disconnect(struct odbc_obj *obj)
res = SQLDisconnect(obj->con);
if (res == SQL_SUCCESS || res == SQL_SUCCESS_WITH_INFO) {
ast_log(LOG_DEBUG, "Disconnected %d from %s [%s]\n", res, obj->parent->name, obj->parent->dsn);
} else {
ast_log(LOG_DEBUG, "res_odbc: %s [%s] already disconnected\n", obj->parent->name, obj->parent->dsn);
if (obj->parent) {
if (res == SQL_SUCCESS || res == SQL_SUCCESS_WITH_INFO) {
ast_log(LOG_DEBUG, "Disconnected %d from %s [%s]\n", res, obj->parent->name, obj->parent->dsn);
} else {
ast_log(LOG_DEBUG, "res_odbc: %s [%s] already disconnected\n", obj->parent->name, obj->parent->dsn);
}
}
if ((res = SQLFreeHandle(SQL_HANDLE_DBC, obj->con) == SQL_SUCCESS)) {