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ParentProcessWatcher is not working properly on macOS #2488
Description
OS: macOS Catalina
vscode-java: 1.6.0
Open a Java project in VS Code, wait for the projects to be imported, and then click x button to close VS Code Window. Java extension is supposed to detect parent process exit and shutdown itself. Actually the log shows the ParentProcessWatcher didn't work.
!ENTRY org.eclipse.jdt.ls.core 4 0 2022-05-31 21:04:11.286
!MESSAGE Cannot run program "kill": error=316, posix_spawn failed
!STACK 0
java.io.IOException: Cannot run program "kill": error=316, posix_spawn failed
at java.base/java.lang.ProcessBuilder.start(Unknown Source)
at java.base/java.lang.ProcessBuilder.start(Unknown Source)
at java.base/java.lang.Runtime.exec(Unknown Source)
at java.base/java.lang.Runtime.exec(Unknown Source)
at java.base/java.lang.Runtime.exec(Unknown Source)
at org.eclipse.jdt.ls.core.internal.ParentProcessWatcher.parentProcessStillRunning(ParentProcessWatcher.java:77)
at org.eclipse.jdt.ls.core.internal.ParentProcessWatcher.run(ParentProcessWatcher.java:49)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.runAndReset(Unknown Source)
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: error=316, posix_spawn failed
at java.base/java.lang.ProcessImpl.forkAndExec(Native Method)
at java.base/java.lang.ProcessImpl.<init>(Unknown Source)
at java.base/java.lang.ProcessImpl.start(Unknown Source)
... 13 more
Activity
testforstephen commentedon Jun 1, 2022
An alternative approach is to use JDK ProcessHandle API. It supports getting a ProcessHandle from a pid, and listening at its exit event via
ProcessHandle.onExit().