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ee53f858c5
We receive a `SIGPIPE` if we write to a pipe that points to a crashed process. This in particular happens if the target of a `JSONRPCConnection` has crashed and we try to send it a message. On Darwin, `DispatchIO` ignores `SIGPIPE` for the pipes handled by it, but that features is not available on Linux. Instead, globally ignore `SIGPIPE` on Linux to prevent us from crashing if the `JSONRPCConnection`'s target crashes. Fixes rdar://75580936
34 lines
1.1 KiB
Swift
34 lines
1.1 KiB
Swift
//===----------------------------------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2021 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#if canImport(Glibc)
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import Glibc
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#endif
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#if os(Linux) || os(Android)
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// This is a lazily initialised global variable that when read for the first time, will ignore SIGPIPE.
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private let globallyIgnoredSIGPIPE: Bool = {
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/* no F_SETNOSIGPIPE on Linux :( */
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_ = Glibc.signal(SIGPIPE, SIG_IGN)
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return true
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}()
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internal func globallyDisableSigpipe() {
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let haveWeIgnoredSIGPIEThisIsHereToTriggerIgnoringIt = globallyIgnoredSIGPIPE
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guard haveWeIgnoredSIGPIEThisIsHereToTriggerIgnoringIt else {
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fatalError("globallyIgnoredSIGPIPE should always be true")
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}
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}
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#endif
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