Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc-cloned / deps / grpc / src / core / lib / channel / channelz_registry.h

diff --git a/legacy-libs/grpc-cloned/deps/grpc/src/core/lib/channel/channelz_registry.h b/legacy-libs/grpc-cloned/deps/grpc/src/core/lib/channel/channelz_registry.h
new file mode 100644 (file)
index 0000000..e04d7c4
--- /dev/null
+++ b/legacy-libs/grpc-cloned/deps/grpc/src/core/lib/channel/channelz_registry.h
@@ -0,0 +1,97 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_CHANNEL_CHANNELZ_REGISTRY_H
+#define GRPC_CORE_LIB_CHANNEL_CHANNELZ_REGISTRY_H
+
+#include <grpc/impl/codegen/port_platform.h>
+
+#include <stdint.h>
+
+#include "src/core/lib/channel/channel_trace.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/gprpp/map.h"
+#include "src/core/lib/gprpp/sync.h"
+
+namespace grpc_core {
+namespace channelz {
+
+// singleton registry object to track all objects that are needed to support
+// channelz bookkeeping. All objects share globally distributed uuids.
+class ChannelzRegistry {
+ public:
+  // To be called in grpc_init()
+  static void Init();
+
+  // To be called in grpc_shutdown();
+  static void Shutdown();
+
+  static void Register(BaseNode* node) {
+    return Default()->InternalRegister(node);
+  }
+  static void Unregister(intptr_t uuid) { Default()->InternalUnregister(uuid); }
+  static RefCountedPtr<BaseNode> Get(intptr_t uuid) {
+    return Default()->InternalGet(uuid);
+  }
+
+  // Returns the allocated JSON string that represents the proto
+  // GetTopChannelsResponse as per channelz.proto.
+  static char* GetTopChannels(intptr_t start_channel_id) {
+    return Default()->InternalGetTopChannels(start_channel_id);
+  }
+
+  // Returns the allocated JSON string that represents the proto
+  // GetServersResponse as per channelz.proto.
+  static char* GetServers(intptr_t start_server_id) {
+    return Default()->InternalGetServers(start_server_id);
+  }
+
+  // Test only helper function to dump the JSON representation to std out.
+  // This can aid in debugging channelz code.
+  static void LogAllEntities() { Default()->InternalLogAllEntities(); }
+
+ private:
+  // Returned the singleton instance of ChannelzRegistry;
+  static ChannelzRegistry* Default();
+
+  // globally registers an Entry. Returns its unique uuid
+  void InternalRegister(BaseNode* node);
+
+  // globally unregisters the object that is associated to uuid. Also does
+  // sanity check that an object doesn't try to unregister the wrong type.
+  void InternalUnregister(intptr_t uuid);
+
+  // if object with uuid has previously been registered as the correct type,
+  // returns the void* associated with that uuid. Else returns nullptr.
+  RefCountedPtr<BaseNode> InternalGet(intptr_t uuid);
+
+  char* InternalGetTopChannels(intptr_t start_channel_id);
+  char* InternalGetServers(intptr_t start_server_id);
+
+  void InternalLogAllEntities();
+
+  // protects members
+  Mutex mu_;
+  Map<intptr_t, BaseNode*> node_map_;
+  intptr_t uuid_generator_ = 0;
+};
+
+}  // namespace channelz
+}  // namespace grpc_core
+
+#endif /* GRPC_CORE_LIB_CHANNEL_CHANNELZ_REGISTRY_H */