From d01be91844b9a053bd73ff05c725e27a929a1309 Mon Sep 17 00:00:00 2001
From: Mark Harrah <dmharrah@gmail.com>
Date: Fri, 29 Jan 2010 20:29:23 -0500
Subject: [PATCH] fix GlobalLock behavior when lock file's directory does not
 exist

---
 launch/Locks.scala                    |  7 ++++++-
 launch/src/test/scala/LocksTest.scala | 14 ++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 launch/src/test/scala/LocksTest.scala

diff --git a/launch/Locks.scala b/launch/Locks.scala
index 431860ca4..5d87c2160 100644
--- a/launch/Locks.scala
+++ b/launch/Locks.scala
@@ -9,7 +9,12 @@ object Locks extends xsbti.GlobalLock
 {
 	private[this] val locks = new Cache[File, GlobalLock](new GlobalLock(_))
 	def apply[T](file: File, action: Callable[T]): T =
-		synchronized { locks(file.getCanonicalFile).withLock(action) }
+		synchronized
+		{
+			file.getParentFile.mkdirs()
+			file.createNewFile()
+			locks(file.getCanonicalFile).withLock(action)
+		}
 
 	private[this] class GlobalLock(file: File)
 	{
diff --git a/launch/src/test/scala/LocksTest.scala b/launch/src/test/scala/LocksTest.scala
new file mode 100644
index 000000000..626df0bbc
--- /dev/null
+++ b/launch/src/test/scala/LocksTest.scala
@@ -0,0 +1,14 @@
+package xsbt.boot
+
+import org.scalacheck._
+import Prop._
+import java.io.File
+
+object LocksTest extends Properties("Locks")
+{
+	property("Lock in nonexisting directory") = 
+		FileUtilities.withTemporaryDirectory { dir =>
+			val lockFile = new File(dir, "doesntexist/lock")
+			Locks(lockFile, new java.util.concurrent.Callable[Boolean] { def call = true })
+		}
+}
\ No newline at end of file