# HG changeset patch
# User coleenp
# Date 1237601328 14400
# Node ID c664a0794f85f7dece476e97d5677ed4257d26ec
# Parent  e55bcaf3a6a1d0e90aeede98ca9e5918829f0ff2
6805748: Assertion "don't reset to 0 -- could be mistaken for never-executed" in CompilationPolicy
Summary: Resetting the invocation counter for a method invocation event was setting count to zero for CompileThreshold=1, making it look like a never executed method.
Reviewed-by: phh, kamg, acorn, never

diff -r e55bcaf3a6a1 -r c664a0794f85 src/share/vm/interpreter/invocationCounter.cpp
--- a/src/share/vm/interpreter/invocationCounter.cpp	Fri Mar 20 11:23:24 2009 -0400
+++ b/src/share/vm/interpreter/invocationCounter.cpp	Fri Mar 20 22:08:48 2009 -0400
@@ -47,6 +47,8 @@
   // executed many more times before re-entering the VM.
   int old_count = count();
   int new_count = MIN2(old_count, (int) (CompileThreshold / 2));
+  // prevent from going to zero, to distinguish from never-executed methods
+  if (new_count == 0)  new_count = 1;
   if (old_count != new_count)  set(state(), new_count);
 }