mirror of https://go.googlesource.com/go
24 lines
760 B
Go
24 lines
760 B
Go
// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build unix
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package runtime
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// retryOnEAGAIN retries a function until it does not return EAGAIN.
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// It will use an increasing delay between calls, and retry up to 20 times.
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// The function argument is expected to return an errno value,
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// and retryOnEAGAIN will return any errno value other than EAGAIN.
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// If all retries return EAGAIN, then retryOnEAGAIN will return EAGAIN.
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func retryOnEAGAIN(fn func() int32) int32 {
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for tries := 0; tries < 20; tries++ {
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errno := fn()
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if errno != _EAGAIN {
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return errno
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}
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usleep_no_g(uint32(tries+1) * 1000) // milliseconds
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}
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return _EAGAIN
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}
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