RUBY-20358 Added experimental feature for closing WSL process stdin (disabled by default)

IDEA-CR-42215

platform/platform-impl/src/com/intellij/execution/wsl/WSLUtil.java

@@ -10,6 +10,7 @@ import com.intellij.openapi.util.SystemInfo;
 import com.intellij.openapi.util.io.FileUtil;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.util.containers.ContainerUtil;
+import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -122,10 +123,13 @@ public class WSLUtil {
    * Temporary hack method to fix <a href="https://github.com/Microsoft/BashOnWindows/issues/2592">WSL bug</a>
    * Must be invoked just before execution, see RUBY-20358
    */
+  @ApiStatus.ScheduledForRemoval(inVersion = "2019.2")
   @NotNull
   public static <T extends ProcessHandler> T addInputCloseListener(@NotNull T processHandler) {
-    processHandler.removeProcessListener(INPUT_CLOSE_LISTENER);
-    processHandler.addProcessListener(INPUT_CLOSE_LISTENER);
+    if (Experiments.isFeatureEnabled("wsl.close.process.input")) {
+      processHandler.removeProcessListener(INPUT_CLOSE_LISTENER);
+      processHandler.addProcessListener(INPUT_CLOSE_LISTENER);
+    }
     return processHandler;
   }
 

platform/platform-resources/src/META-INF/PlatformExtensions.xml

@@ -13,6 +13,12 @@
     <appStarter implementation="com.intellij.ide.plugins.BundledPluginsLister"/>
 
     <applicationService serviceImplementation="com.intellij.execution.wsl.WSLDistributionService"/>
+    <experimentalFeature id="wsl.close.process.input" percentOfUsers="0">
+      <description>Forces closing of WSL process input stream to prevent process zombification. See
+        https://github.com/Microsoft/WSL/issues/2592
+        Required for Windows 10 version prior 1803
+      </description>
+    </experimentalFeature>
 
     <applicationService serviceInterface="com.intellij.openapi.components.impl.stores.IComponentStore"
                         serviceImplementation="com.intellij.configurationStore.ApplicationStoreImpl"/>