# HG changeset patch
# User Fabian Huch <huch@in.tum.de>
# Date 1709832282 -3600
# Node ID 45198ea3f0b32b0e11a465dfe85e1bf80e5583a6
# Parent  1f7dcfdb3e671a537a49f2092f9227b2f144aeef
parallelize schedule optimization;

diff -r 1f7dcfdb3e67 -r 45198ea3f0b3 src/Pure/Build/build_schedule.scala
--- a/src/Pure/Build/build_schedule.scala	Wed Mar 06 21:52:58 2024 +0100
+++ b/src/Pure/Build/build_schedule.scala	Thu Mar 07 18:24:42 2024 +0100
@@ -601,8 +601,10 @@
   case class Optimizer(schedulers: List[Scheduler]) extends Scheduler {
     require(schedulers.nonEmpty)
 
-    def schedule(state: Build_Process.State): Schedule =
-      schedulers.map(_.schedule(state)).minBy(_.duration.ms)
+    def schedule(state: Build_Process.State): Schedule = {
+      def main(scheduler: Scheduler): Schedule = scheduler.schedule(state)
+      Par_List.map(main, schedulers).minBy(_.duration.ms)
+    }
   }