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colo-compare: kick compare thread to exit after some cleanup in finalization

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We should call g_main_loop_quit() to notify colo compare thread to
exit, Or it will run in g_main_loop_run() forever.

Besides, the finalizing process can't happen in context of colo thread,
it is reasonable to remove the 'if (qemu_thread_is_self(&s->thread))'
branch.

Before compare thead exits, some cleanup works need to be
done,  All unhandled packets need to be released and connection_track_table
needs to be freed, or there will be memory leak.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
zhanghailiang 2017-02-17 10:53:12 +08:00 committed by Jason Wang
parent 66d2a2423e
commit dfd917a9c2
1 changed files with 29 additions and 10 deletions
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39
net/colo-compare.c
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@ -83,6 +83,8 @@ typedef struct CompareState {
GHashTable *connection_track_table;
/* compare thread, a thread for each NIC */
QemuThread thread;
GMainLoop *compare_loop;
} CompareState;
typedef struct CompareClass {
@ -496,7 +498,6 @@ static gboolean check_old_packet_regular(void *opaque)
static void *colo_compare_thread(void *opaque)
{
GMainContext *worker_context;
GMainLoop *compare_loop;
CompareState *s = opaque;
GSource *timeout_source;
@ -507,7 +508,7 @@ static void *colo_compare_thread(void *opaque)
qemu_chr_fe_set_handlers(&s->chr_sec_in, compare_chr_can_read,
compare_sec_chr_in, NULL, s, worker_context, true);
compare_loop = g_main_loop_new(worker_context, FALSE);
s->compare_loop = g_main_loop_new(worker_context, FALSE);
/* To kick any packets that the secondary doesn't match */
timeout_source = g_timeout_source_new(REGULAR_PACKET_CHECK_MS);
@ -515,10 +516,10 @@ static void *colo_compare_thread(void *opaque)
(GSourceFunc)check_old_packet_regular, s, NULL);
g_source_attach(timeout_source, worker_context);
g_main_loop_run(compare_loop);
g_main_loop_run(s->compare_loop);
g_source_unref(timeout_source);
g_main_loop_unref(compare_loop);
g_main_loop_unref(s->compare_loop);
g_main_context_unref(worker_context);
return NULL;
}
@ -675,6 +676,23 @@ static void colo_compare_complete(UserCreatable *uc, Error **errp)
return;
}
static void colo_flush_packets(void *opaque, void *user_data)
{
CompareState *s = user_data;
Connection *conn = opaque;
Packet *pkt = NULL;
while (!g_queue_is_empty(&conn->primary_list)) {
pkt = g_queue_pop_head(&conn->primary_list);
compare_chr_send(&s->chr_out, pkt->data, pkt->size);
packet_destroy(pkt, NULL);
}
while (!g_queue_is_empty(&conn->secondary_list)) {
pkt = g_queue_pop_head(&conn->secondary_list);
packet_destroy(pkt, NULL);
}
}
static void colo_compare_class_init(ObjectClass *oc, void *data)
{
UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
@ -703,14 +721,15 @@ static void colo_compare_finalize(Object *obj)
qemu_chr_fe_deinit(&s->chr_sec_in);
qemu_chr_fe_deinit(&s->chr_out);
g_main_loop_quit(s->compare_loop);
qemu_thread_join(&s->thread);
/* Release all unhandled packets after compare thead exited */
g_queue_foreach(&s->conn_list, colo_flush_packets, s);
g_queue_free(&s->conn_list);
if (qemu_thread_is_self(&s->thread)) {
/* compare connection */
g_queue_foreach(&s->conn_list, colo_compare_connection, s);
qemu_thread_join(&s->thread);
}
g_hash_table_destroy(s->connection_track_table);
g_free(s->pri_indev);
g_free(s->sec_indev);
g_free(s->outdev);