1 files changed, 83 insertions, 0 deletions
diff --git a/src/core/ext/filters/client_channel/resolver.cc b/src/core/ext/filters/client_channel/resolver.cc
new file mode 100644
index 0000000000..8401504fcf
--- /dev/null
+++ b/src/core/ext/filters/client_channel/resolver.cc
@@ -0,0 +1,83 @@
+/*
+ *
+ * Copyright 2015 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 "src/core/ext/filters/client_channel/resolver.h"
+#include "src/core/lib/iomgr/combiner.h"
+
+#ifndef NDEBUG
+grpc_tracer_flag grpc_trace_resolver_refcount =
+    GRPC_TRACER_INITIALIZER(false, "resolver_refcount");
+#endif
+
+void grpc_resolver_init(grpc_resolver *resolver,
+                        const grpc_resolver_vtable *vtable,
+                        grpc_combiner *combiner) {
+  resolver->vtable = vtable;
+  resolver->combiner = GRPC_COMBINER_REF(combiner, "resolver");
+  gpr_ref_init(&resolver->refs, 1);
+}
+
+#ifndef NDEBUG
+void grpc_resolver_ref(grpc_resolver *resolver, const char *file, int line,
+                       const char *reason) {
+  if (GRPC_TRACER_ON(grpc_trace_resolver_refcount)) {
+    gpr_atm old_refs = gpr_atm_no_barrier_load(&resolver->refs.count);
+    gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+            "RESOLVER:%p   ref %" PRIdPTR " -> %" PRIdPTR " %s", resolver,
+            old_refs, old_refs + 1, reason);
+  }
+#else
+void grpc_resolver_ref(grpc_resolver *resolver) {
+#endif
+  gpr_ref(&resolver->refs);
+}
+
+#ifndef NDEBUG
+void grpc_resolver_unref(grpc_exec_ctx *exec_ctx, grpc_resolver *resolver,
+                         const char *file, int line, const char *reason) {
+  if (GRPC_TRACER_ON(grpc_trace_resolver_refcount)) {
+    gpr_atm old_refs = gpr_atm_no_barrier_load(&resolver->refs.count);
+    gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+            "RESOLVER:%p unref %" PRIdPTR " -> %" PRIdPTR " %s", resolver,
+            old_refs, old_refs - 1, reason);
+  }
+#else
+void grpc_resolver_unref(grpc_exec_ctx *exec_ctx, grpc_resolver *resolver) {
+#endif
+  if (gpr_unref(&resolver->refs)) {
+    grpc_combiner *combiner = resolver->combiner;
+    resolver->vtable->destroy(exec_ctx, resolver);
+    GRPC_COMBINER_UNREF(exec_ctx, combiner, "resolver");
+  }
+}
+
+void grpc_resolver_shutdown_locked(grpc_exec_ctx *exec_ctx,
+                                   grpc_resolver *resolver) {
+  resolver->vtable->shutdown_locked(exec_ctx, resolver);
+}
+
+void grpc_resolver_channel_saw_error_locked(grpc_exec_ctx *exec_ctx,
+                                            grpc_resolver *resolver) {
+  resolver->vtable->channel_saw_error_locked(exec_ctx, resolver);
+}
+
+void grpc_resolver_next_locked(grpc_exec_ctx *exec_ctx, grpc_resolver *resolver,
+                               grpc_channel_args **result,
+                               grpc_closure *on_complete) {
+  resolver->vtable->next_locked(exec_ctx, resolver, result, on_complete);
+}