# HG changeset patch
# User jmasa
# Date 1267632641 28800
# Node ID d47555d7aca8d1649ed309005a41286b77a3ab34
# Parent  c76ca382971be8e2e57bc7236b4e60bcf064bdd4
6910182: CMS: assert(_cursor[j] == _survivor_plab_array[j].end(),"Ctl pt invariant")
Summary: Calculation of the slicing of survivor spaces for MT was incorrect.
Reviewed-by: ysr

diff -r c76ca382971b -r d47555d7aca8 src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp
--- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp	Tue Mar 02 13:59:37 2010 -0800
+++ b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp	Wed Mar 03 08:10:41 2010 -0800
@@ -723,8 +723,9 @@
 
   // Support for parallelizing survivor space rescan
   if (CMSParallelRemarkEnabled && CMSParallelSurvivorRemarkEnabled) {
-    size_t max_plab_samples = cp->max_gen0_size()/
-                                ((SurvivorRatio+2)*MinTLABSize);
+    const size_t max_plab_samples =
+      ((DefNewGeneration*)_young_gen)->max_survivor_size()/MinTLABSize;
+
     _survivor_plab_array  = NEW_C_HEAP_ARRAY(ChunkArray, ParallelGCThreads);
     _survivor_chunk_array = NEW_C_HEAP_ARRAY(HeapWord*, 2*max_plab_samples);
     _cursor               = NEW_C_HEAP_ARRAY(size_t, ParallelGCThreads);