--- a/src/Pure/Concurrent/consumer_thread.scala Sat Apr 04 21:38:20 2020 +0200
+++ b/src/Pure/Concurrent/consumer_thread.scala Sun Apr 05 13:05:40 2020 +0200
@@ -47,7 +47,7 @@
private var active = true
private val mailbox = Mailbox[Option[Request]]
- private val thread = Standard_Thread.fork(name = name, daemon = daemon) { main_loop(Nil) }
+ private val thread = Isabelle_Thread.fork(name = name, daemon = daemon) { main_loop(Nil) }
def is_active: Boolean = active && thread.isAlive
def check_thread: Boolean = Thread.currentThread == thread