child_process: remove use of stream private state #29358
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addaleax
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lib/internal/child_process.js
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| @@ -298,8 +298,7 @@ function flushStdio(subprocess) { | |||
| // which data can be read from a stream, e.g. being consumed on the | |||
| // native layer directly as a StreamBase. | |||
| if (!stream || !stream.readable || | |||
| stream._readableState.readableListening || | |||
| stream[kIsUsedAsStdio]) { | |||
| stream[kIsUsedAsStdio]) { | |||
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Suggested change
| stream[kIsUsedAsStdio]) { | |
| stream[kIsUsedAsStdio]) { |
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Alternatively, it should be able to fit on one line now:
if (!stream || !stream.readable || stream[kIsUsedAsStdio]) {There was a problem hiding this comment.
Thanks @mscdex for the suggestion. Updated the PR accordingly.
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@addaleax I'd prefer to land this on Node 12 to catch a regression early |
jasnell
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PR-URL: #29358 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
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Landed in f9c16b8 |
MylesBorins
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PR-URL: #29358 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
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In child_process.js L#301, the state
stream._readableState.readableListeningis used to determine if any paused stdio streams exist, and if so, theresume()method is used to flush it. Checking this state seems unnecessary as theresume()method has no effect on the streams subscribed withreadableevent. Also, all existing tests pass even after removing it.If this is correct analysis, this PR includes change as part of the issue #445, to remove direct references to internal state of the stream implementation.
cc: @addaleax @mcollina
Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passes