Add cancellation to asynchronous security APIs.

1 files changed, 14 insertions, 2 deletions

diff --git a/src/core/lib/security/credentials/plugin/plugin_credentials.h b/src/core/lib/security/credentials/plugin/plugin_credentials.h
index ba3dd76859..57266d589a 100644
--- a/src/core/lib/security/credentials/plugin/plugin_credentials.h
+++ b/src/core/lib/security/credentials/plugin/plugin_credentials.h
@@ -21,10 +21,22 @@
 
 #include "src/core/lib/security/credentials/credentials.h"
 
-typedef struct {
+struct grpc_plugin_credentials;
+
+typedef struct grpc_plugin_credentials_pending_request {
+  bool cancelled;
+  struct grpc_plugin_credentials *creds;
+  grpc_credentials_mdelem_array *md_array;
+  grpc_closure *on_request_metadata;
+  struct grpc_plugin_credentials_pending_request *prev;
+  struct grpc_plugin_credentials_pending_request *next;
+} grpc_plugin_credentials_pending_request;
+
+typedef struct grpc_plugin_credentials {
   grpc_call_credentials base;
   grpc_metadata_credentials_plugin plugin;
-  grpc_credentials_md_store *plugin_md;
+  gpr_mu mu;
+  grpc_plugin_credentials_pending_request *pending_requests;
 } grpc_plugin_credentials;
 
 #endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_PLUGIN_PLUGIN_CREDENTIALS_H */