Free all the memory we have allocated during running.
v2.: split creating objects and getting rid of leaks
into two patches
move check for NULL description into free_description
Signed-off-by: Marek Chalupa <mchqwe...@gmail.com>
---
src/scanner.c | 110 +++++++++++++++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 105 insertions(+), 5 deletions(-)
diff --git a/src/scanner.c b/src/scanner.c
index 85c283b..92f336f 100644
--- a/src/scanner.c
+++ b/src/scanner.c
@@ -333,6 +333,15 @@ create_message(struct location loc, const char *name)
return message;
}
+static void
+free_arg(struct arg *arg)
+{
+ free(arg->name);
+ free(arg->interface_name);
+ free(arg->summary);
+ free(arg);
+}
+
static struct arg *
create_arg(const char *name, const char *type)
{
@@ -359,12 +368,41 @@ create_arg(const char *name, const char *type)
arg->type = NEW_ID;
else if (strcmp(type, "object") == 0)
arg->type = OBJECT;
- else
+ else {
+ free_arg(arg);
return NULL;
+ }
return arg;
}
+static void
+free_description(struct description *desc)
+{
+ if (!desc)
+ return;
+
+ free(desc->summary);
+ free(desc->text);
+
+ free(desc);
+}
+
+static void
+free_message(struct message *message)
+{
+ struct arg *a, *a_next;
+
+ free(message->name);
+ free(message->uppercase_name);
+ free_description(message->description);
+
+ wl_list_for_each_safe(a, a_next, &message->arg_list, link)
+ free_arg(a);
+
+ free(message);
+}
+
static struct enumeration *
create_enumeration(const char *name)
{
@@ -393,6 +431,32 @@ create_entry(const char *name, const char *value)
return entry;
}
+static void
+free_entry(struct entry *entry)
+{
+ free(entry->name);
+ free(entry->uppercase_name);
+ free(entry->value);
+ free(entry->summary);
+
+ free(entry);
+}
+
+static void
+free_enumeration(struct enumeration *enumeration)
+{
+ struct entry *e, *e_next;
+
+ free(enumeration->name);
+ free(enumeration->uppercase_name);
+ free_description(enumeration->description);
+
+ wl_list_for_each_safe(e, e_next, &enumeration->entry_list, link)
+ free_entry(e);
+
+ free(enumeration);
+}
+
static struct interface *
create_interface(struct location loc, const char *name, int version)
{
@@ -413,6 +477,26 @@ create_interface(struct location loc, const char *name,
int version)
}
static void
+free_interface(struct interface *interface)
+{
+ struct message *m, *next_m;
+ struct enumeration *e, *next_e;
+
+ free(interface->name);
+ free(interface->uppercase_name);
+ free_description(interface->description);
+
+ wl_list_for_each_safe(m, next_m, &interface->request_list, link)
+ free_message(m);
+ wl_list_for_each_safe(m, next_m, &interface->event_list, link)
+ free_message(m);
+ wl_list_for_each_safe(e, next_e, &interface->enumeration_list, link)
+ free_enumeration(e);
+
+ free(interface);
+}
+
+static void
start_element(void *data, const char *element_name, const char **atts)
{
struct parse_context *ctx = data;
@@ -1101,7 +1185,7 @@ get_include_name(bool core, enum side side)
static void
emit_header(struct protocol *protocol, enum side side)
{
- struct interface *i;
+ struct interface *i, *i_next;
struct wl_array types;
const char *s = (side == SERVER) ? "SERVER" : "CLIENT";
char **p, *prev;
@@ -1154,7 +1238,7 @@ emit_header(struct protocol *protocol, enum side side)
printf("\n");
- wl_list_for_each(i, &protocol->interface_list, link) {
+ wl_list_for_each_safe(i, i_next, &protocol->interface_list, link) {
emit_enumerations(i);
@@ -1168,6 +1252,8 @@ emit_header(struct protocol *protocol, enum side side)
emit_opcodes(&i->request_list, i);
emit_stubs(&i->request_list, i);
}
+
+ free_interface(i);
}
printf("#ifdef __cplusplus\n"
@@ -1283,7 +1369,7 @@ emit_messages(struct wl_list *message_list,
static void
emit_code(struct protocol *protocol)
{
- struct interface *i;
+ struct interface *i, *next;
struct wl_array types;
char **p, *prev;
@@ -1318,7 +1404,7 @@ emit_code(struct protocol *protocol)
}
printf("};\n\n");
- wl_list_for_each(i, &protocol->interface_list, link) {
+ wl_list_for_each_safe(i, next, &protocol->interface_list, link) {
emit_messages(&i->request_list, i, "requests");
emit_messages(&i->event_list, i, "events");
@@ -1341,9 +1427,21 @@ emit_code(struct protocol *protocol)
printf("\t0, NULL,\n");
printf("};\n\n");
+
+ /* we won't need it any further */
+ free_interface(i);
}
}
+static void
+free_protocol(struct protocol *protocol)
+{
+ free(protocol->name);
+ free(protocol->uppercase_name);
+ free(protocol->copyright);
+ free_description(protocol->description);
+}
+
int main(int argc, char *argv[])
{
struct parse_context ctx;
@@ -1467,5 +1565,7 @@ int main(int argc, char *argv[])
break;
}
+ free_protocol(&protocol);
+
return 0;
}
--
2.4.3
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