From b75ff8cd5c2ac1a1bd88ddf513f3a07a570eafcf Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sat, 17 Aug 2019 15:23:18 +0200
Subject: Tweak deadlock detection thread wait time

---
 libbuild2/scheduler.cxx | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libbuild2/scheduler.cxx b/libbuild2/scheduler.cxx
index 37220c7..3c06176 100644
--- a/libbuild2/scheduler.cxx
+++ b/libbuild2/scheduler.cxx
@@ -832,16 +832,16 @@ namespace build2
         size_t op (s.progress_.load (memory_order_relaxed)), np (op);
 
         l.unlock ();
-        for (size_t i (0), n (10000), m (9900); op == np && i != n; ++i)
+        for (size_t i (0), n (10000), m (9990); op == np && i != n; ++i)
         {
           // On the last few iterations sleep a bit instead of yielding (in
           // case yield() is a noop; we use the consume order for the same
           // reason).
           //
-          if (i < m)
+          if (i <= m)
             this_thread::yield ();
           else
-            active_sleep (1ms);
+            active_sleep ((i - m) * 10ms);
 
           np = s.progress_.load (memory_order_consume);
         }
-- 
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