From 6392e00653d3b81062ef60d8ae2fa2621873533f Mon Sep 17 00:00:00 2001 From: Dominik Süß Date: Tue, 9 May 2023 19:19:48 +0200 Subject: feat: initial tracing support (#1623) --- .../grpc/internal/grpcsync/oncefunc.go | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 vendor/google.golang.org/grpc/internal/grpcsync/oncefunc.go (limited to 'vendor/google.golang.org/grpc/internal/grpcsync/oncefunc.go') diff --git a/vendor/google.golang.org/grpc/internal/grpcsync/oncefunc.go b/vendor/google.golang.org/grpc/internal/grpcsync/oncefunc.go new file mode 100644 index 000000000..6635f7bca --- /dev/null +++ b/vendor/google.golang.org/grpc/internal/grpcsync/oncefunc.go @@ -0,0 +1,32 @@ +/* + * + * Copyright 2022 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. + * + */ + +package grpcsync + +import ( + "sync" +) + +// OnceFunc returns a function wrapping f which ensures f is only executed +// once even if the returned function is executed multiple times. +func OnceFunc(f func()) func() { + var once sync.Once + return func() { + once.Do(f) + } +} -- cgit v1.2.3