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authorStefan Hajnoczi <stefanha@redhat.com>2023-08-30 18:48:01 -0400
committerEric Blake <eblake@redhat.com>2023-09-07 20:32:11 -0500
commitacd4be64b865e81094c690503b4f39804eb67a0b (patch)
tree4a95a21cf10a963e247cfaf5101e1de84b7e1f97
parent078c8adaa61df4fe081660f0c14ce35ddd938de0 (diff)
downloadfocaccia-qemu-acd4be64b865e81094c690503b4f39804eb67a0b.tar.gz
focaccia-qemu-acd4be64b865e81094c690503b4f39804eb67a0b.zip
io: check there are no qio_channel_yield() coroutines during ->finalize()
Callers must clean up their coroutines before calling
object_unref(OBJECT(ioc)) to prevent an fd handler leak. Add an
assertion to check this.

This patch is preparation for the fd handler changes that follow.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-ID: <20230830224802.493686-4-stefanha@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
-rw-r--r--io/channel.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/io/channel.c b/io/channel.c
index 72f0066af5..c415f3fc88 100644
--- a/io/channel.c
+++ b/io/channel.c
@@ -653,6 +653,10 @@ static void qio_channel_finalize(Object *obj)
 {
     QIOChannel *ioc = QIO_CHANNEL(obj);
 
+    /* Must not have coroutines in qio_channel_yield() */
+    assert(!ioc->read_coroutine);
+    assert(!ioc->write_coroutine);
+
     g_free(ioc->name);
 
 #ifdef _WIN32