Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc / deps / grpc / src / core / ext / filters / client_channel / local_subchannel_pool.cc

diff --git a/legacy-libs/grpc/deps/grpc/src/core/ext/filters/client_channel/local_subchannel_pool.cc b/legacy-libs/grpc/deps/grpc/src/core/ext/filters/client_channel/local_subchannel_pool.cc
new file mode 100644 (file)
index 0000000..d1c1cac
--- /dev/null
+++ b/legacy-libs/grpc/deps/grpc/src/core/ext/filters/client_channel/local_subchannel_pool.cc
@@ -0,0 +1,96 @@
+//
+//
+// Copyright 2018 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.
+//
+//
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/local_subchannel_pool.h"
+
+#include "src/core/ext/filters/client_channel/subchannel.h"
+
+namespace grpc_core {
+
+LocalSubchannelPool::LocalSubchannelPool() {
+  subchannel_map_ = grpc_avl_create(&subchannel_avl_vtable_);
+}
+
+LocalSubchannelPool::~LocalSubchannelPool() {
+  grpc_avl_unref(subchannel_map_, nullptr);
+}
+
+Subchannel* LocalSubchannelPool::RegisterSubchannel(SubchannelKey* key,
+                                                    Subchannel* constructed) {
+  // Check to see if a subchannel already exists.
+  Subchannel* c =
+      static_cast<Subchannel*>(grpc_avl_get(subchannel_map_, key, nullptr));
+  if (c != nullptr) {
+    // The subchannel already exists. Reuse it.
+    c = GRPC_SUBCHANNEL_REF(c, "subchannel_register+reuse");
+    GRPC_SUBCHANNEL_UNREF(constructed, "subchannel_register+found_existing");
+  } else {
+    // There hasn't been such subchannel. Add one.
+    subchannel_map_ = grpc_avl_add(subchannel_map_, New<SubchannelKey>(*key),
+                                   constructed, nullptr);
+    c = constructed;
+  }
+  return c;
+}
+
+void LocalSubchannelPool::UnregisterSubchannel(SubchannelKey* key) {
+  subchannel_map_ = grpc_avl_remove(subchannel_map_, key, nullptr);
+}
+
+Subchannel* LocalSubchannelPool::FindSubchannel(SubchannelKey* key) {
+  Subchannel* c =
+      static_cast<Subchannel*>(grpc_avl_get(subchannel_map_, key, nullptr));
+  return c == nullptr ? c : GRPC_SUBCHANNEL_REF(c, "found_from_pool");
+}
+
+namespace {
+
+void sck_avl_destroy(void* p, void* user_data) {
+  SubchannelKey* key = static_cast<SubchannelKey*>(p);
+  Delete(key);
+}
+
+void* sck_avl_copy(void* p, void* unused) {
+  const SubchannelKey* key = static_cast<const SubchannelKey*>(p);
+  auto new_key = New<SubchannelKey>(*key);
+  return static_cast<void*>(new_key);
+}
+
+long sck_avl_compare(void* a, void* b, void* unused) {
+  const SubchannelKey* key_a = static_cast<const SubchannelKey*>(a);
+  const SubchannelKey* key_b = static_cast<const SubchannelKey*>(b);
+  return key_a->Cmp(*key_b);
+}
+
+void scv_avl_destroy(void* p, void* user_data) {}
+
+void* scv_avl_copy(void* p, void* unused) { return p; }
+
+}  // namespace
+
+const grpc_avl_vtable LocalSubchannelPool::subchannel_avl_vtable_ = {
+    sck_avl_destroy,  // destroy_key
+    sck_avl_copy,     // copy_key
+    sck_avl_compare,  // compare_keys
+    scv_avl_destroy,  // destroy_value
+    scv_avl_copy      // copy_value
+};
+
+}  // namespace grpc_core