From bc0f86df07436db27261b91edd8473d2a318cc32 Mon Sep 17 00:00:00 2001
From: Vasil Vasilev <vasil.vasilev@jetbrains.com>
Date: Thu, 21 Nov 2024 19:57:14 +0100
Subject: [PATCH] [compiler] Avoid computing zinc stamps for JDK 9+ module .sig
 files/paths #SCL-22939 fixed

- These paths really do not like being accessed through the regular Java IO means, throwing ClosedFileSystemException instances when accessed concurrently, like we do in the Scala compile server.
- https://github.com/sbt/zinc/issues/1383
---
 .../scala/local/zinc/StampReader.scala        | 26 ++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

diff --git a/scala/compile-server/src/org/jetbrains/jps/incremental/scala/local/zinc/StampReader.scala b/scala/compile-server/src/org/jetbrains/jps/incremental/scala/local/zinc/StampReader.scala
index 01f65916809..de556dafc33 100644
--- a/scala/compile-server/src/org/jetbrains/jps/incremental/scala/local/zinc/StampReader.scala
+++ b/scala/compile-server/src/org/jetbrains/jps/incremental/scala/local/zinc/StampReader.scala
@@ -1,8 +1,28 @@
 package org.jetbrains.jps.incremental.scala.local.zinc
 
-import sbt.internal.inc.{PlainVirtualFileConverter, Stamps}
-import xsbti.compile.analysis.ReadStamps
+import sbt.internal.inc.{FarmHash, PlainVirtualFileConverter, Stamper, Stamps}
+import xsbti.VirtualFileRef
+import xsbti.compile.analysis.{ReadStamps, Stamp}
 
 private[local] object StampReader {
-  val Instance: ReadStamps = Stamps.timeWrapBinaryStamps(PlainVirtualFileConverter.converter)
+
+  private def avoidSigs(ref: VirtualFileRef): Stamp = {
+    if (ref.id.endsWith(".sig")) {
+      val path = PlainVirtualFileConverter.converter.toPath(ref)
+      if (path.getClass.getName == "jdk.nio.zipfs.ZipPath")
+        return FarmHash.fromLong(path.##.toLong)
+    }
+    fallback(ref)
+  }
+
+  private def fallback(ref: VirtualFileRef): Stamp =
+    Stamper.forHashInRootPaths(PlainVirtualFileConverter.converter).apply(ref)
+
+  private val uncached: ReadStamps = Stamps.uncachedStamps(
+    avoidSigs,
+    Stamper.forContentHash,
+    avoidSigs
+  )
+
+  val Instance: ReadStamps = Stamps.timeWrapBinaryStamps(uncached, PlainVirtualFileConverter.converter)
 }