From f6ad4dcef54c5ce997a4bad5a6d86de229015700 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 16 Apr 2024 21:25:22 +0200 Subject: Adding upstream version 1.22.1. Signed-off-by: Daniel Baumann --- src/runtime/retry.go | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 src/runtime/retry.go (limited to 'src/runtime/retry.go') diff --git a/src/runtime/retry.go b/src/runtime/retry.go new file mode 100644 index 0000000..2e2f813 --- /dev/null +++ b/src/runtime/retry.go @@ -0,0 +1,23 @@ +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build unix + +package runtime + +// retryOnEAGAIN retries a function until it does not return EAGAIN. +// It will use an increasing delay between calls, and retry up to 20 times. +// The function argument is expected to return an errno value, +// and retryOnEAGAIN will return any errno value other than EAGAIN. +// If all retries return EAGAIN, then retryOnEAGAIN will return EAGAIN. +func retryOnEAGAIN(fn func() int32) int32 { + for tries := 0; tries < 20; tries++ { + errno := fn() + if errno != _EAGAIN { + return errno + } + usleep_no_g(uint32(tries+1) * 1000) // milliseconds + } + return _EAGAIN +} -- cgit v1.2.3