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fix: Prevent server subprocess hang on Linux (#8442)

This commit is contained in:
calm329 2026-01-11 20:17:58 -08:00
parent e7323171a2
commit 476730aba2
1 changed files with 7 additions and 0 deletions
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7
main-command/src/main/scala/sbt/internal/client/NetworkClient.scala
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@ -390,10 +390,17 @@ class NetworkClient(
if (Util.isEmacs && !Util.isWindows) List("nohup") if (Util.isEmacs && !Util.isWindows) List("nohup")
else Nil else Nil
// https://github.com/sbt/sbt/issues/8442
// On Linux, if stdout/stderr are inherited and the buffer fills up (~64KB),
// the server process will block on writes. Discard output since the server
// communicates via the boot socket, not stdout/stderr.
val nullFile = new File(if (Util.isWindows) "NUL" else "/dev/null")
val processBuilder = val processBuilder =
new ProcessBuilder((nohup ++ cmd)*) new ProcessBuilder((nohup ++ cmd)*)
.directory(arguments.baseDirectory) .directory(arguments.baseDirectory)
.redirectInput(Redirect.PIPE) .redirectInput(Redirect.PIPE)
.redirectOutput(nullFile)
.redirectError(nullFile)
processBuilder.environment.put(Terminal.TERMINAL_PROPS, props) processBuilder.environment.put(Terminal.TERMINAL_PROPS, props)
Try(processBuilder.start()) match { Try(processBuilder.start()) match {
case Success(process) => case Success(process) =>