[gRPC-ObjC] Fix potential over releasing crash for grp channel (#27061)

4 years ago · d10b2a677d
parent 793cb25d4a
commit d10b2a677d
1 changed files with 5 additions and 2 deletions
--- a/src/objective-c/GRPCClient/private/GRPCCore/GRPCChannel.m
+++ b/src/objective-c/GRPCClient/private/GRPCCore/GRPCChannel.m
@ -291,8 +291,11 @@
 }

 - (void)dealloc {
-  if (_unmanagedChannel) {
-    grpc_channel_destroy(_unmanagedChannel);
+  @synchronized(self) {
+    if (_unmanagedChannel) {
+      grpc_channel_destroy(_unmanagedChannel);
+      _unmanagedChannel = NULL;
+    }
  }
 }