changeset 640:ba50942c8138

Merge
author tonyp
date Wed, 18 Mar 2009 11:37:48 -0400
parents 2581d90c6c9b 922c573ea67d
children bd441136a5ce 2314b7336582
files src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp src/share/vm/gc_implementation/g1/g1RemSet.cpp src/share/vm/gc_implementation/g1/g1_globals.hpp
diffstat 9 files changed, 239 insertions(+), 107 deletions(-) [+]
line wrap: on
line diff
--- a/make/jprt.properties	Thu Mar 12 18:17:25 2009 -0700
+++ b/make/jprt.properties	Wed Mar 18 11:37:48 2009 -0400
@@ -19,12 +19,12 @@
 # Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 # CA 95054 USA or visit www.sun.com if you need additional information or
 # have any questions.
-#  
+#
 #
 
 # Properties for jprt
 
-# All build result bundles are full jdks, so the 64bit testing does not 
+# All build result bundles are full jdks, so the 64bit testing does not
 #    need the 32bit sibling bundle installed.
 #    Note: If the hotspot/make/Makefile changed to only bundle the 64bit files
 #          when bundling 64bit, and stripped out the 64bit files from any 32bit
@@ -89,60 +89,52 @@
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-jvm98, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-scimark, \
     ${jprt.my.solaris.sparc}-product-{c1|c2}-runThese, \
-    ${jprt.my.solaris.sparc}-product-{c1|c2}-runThese_Xcomp, \
-    ${jprt.my.solaris.sparc}-product-{c1|c2}-runThese_Xcomp_2, \
-    ${jprt.my.solaris.sparc}-product-{c1|c2}-runThese_Xcomp_3, \
     ${jprt.my.solaris.sparc}-fastdebug-c1-runThese_Xshare, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCBasher_default, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCBasher_SerialGC, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCBasher_ParallelGC, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCBasher_ParNewGC, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCBasher_CMS, \
-    ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCBasher_default_2, \
-    ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCBasher_SerialGC_2, \
-    ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCBasher_ParallelGC_2, \
-    ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCBasher_ParNewGC_2, \
-    ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCBasher_CMS_2, \
+    ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCBasher_G1, \
+    ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCBasher_ParOldGC, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCOld_default, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCOld_SerialGC, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCOld_ParallelGC, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCOld_ParNewGC, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCOld_CMS, \
+    ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCOld_G1, \
+    ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-GCOld_ParOldGC, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-jbb_default, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-jbb_SerialGC, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-jbb_ParallelGC, \
     ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-jbb_CMS, \
-    ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-scimark_2, \
-    ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-scimark_3
+    ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-jbb_G1, \
+    ${jprt.my.solaris.sparc}-{product|fastdebug}-{c1|c2}-jbb_ParOldGC
 
 jprt.my.solaris.sparcv9.test.targets= \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-jvm98, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-scimark, \
     ${jprt.my.solaris.sparcv9}-product-c2-runThese, \
-    ${jprt.my.solaris.sparcv9}-product-c2-runThese_Xcomp, \
-    ${jprt.my.solaris.sparcv9}-product-c2-runThese_Xcomp_2, \
-    ${jprt.my.solaris.sparcv9}-product-c2-runThese_Xcomp_3, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_default, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_SerialGC, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_ParallelGC, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_ParNewGC, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_CMS, \
-    ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_default_2, \
-    ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_SerialGC_2, \
-    ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_ParallelGC_2, \
-    ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_ParNewGC_2, \
-    ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_CMS_2, \
+    ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_G1, \
+    ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCBasher_ParOldGC, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCOld_default, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCOld_SerialGC, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCOld_ParallelGC, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCOld_ParNewGC, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCOld_CMS, \
+    ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCOld_G1, \
+    ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-GCOld_ParOldGC, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-jbb_default, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-jbb_SerialGC, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-jbb_ParallelGC, \
     ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-jbb_CMS, \
-    ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-scimark_2, \
-    ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-scimark_3
+    ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-jbb_G1, \
+    ${jprt.my.solaris.sparcv9}-{product|fastdebug}-c2-jbb_ParOldGC
 
 jprt.my.solaris.x64.test.targets= \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-jvm98, \
@@ -154,73 +146,80 @@
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCBasher_ParallelGC, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCBasher_ParNewGC, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCBasher_CMS, \
-    ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCBasher_default_2, \
-    ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCBasher_SerialGC_2, \
-    ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCBasher_ParallelGC_2, \
-    ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCBasher_ParNewGC_2, \
-    ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCBasher_CMS_2, \
+    ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCBasher_G1, \
+    ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCBasher_ParOldGC, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCOld_default, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCOld_SerialGC, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCOld_ParallelGC, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCOld_ParNewGC, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCOld_CMS, \
+    ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCOld_G1, \
+    ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCOld_ParOldGC, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-jbb_default, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-jbb_SerialGC, \
     ${jprt.my.solaris.x64}-{product|fastdebug}-c2-jbb_ParallelGC, \
-    ${jprt.my.solaris.x64}-{product|fastdebug}-c2-jbb_CMS
+    ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCOld_CMS, \
+    ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCOld_G1, \
+    ${jprt.my.solaris.x64}-{product|fastdebug}-c2-GCOld_ParOldGC
 
 jprt.my.solaris.i586.test.targets= \
     ${jprt.my.solaris.i586}-{product|fastdebug}-{c1|c2}-jvm98, \
     ${jprt.my.solaris.i586}-{product|fastdebug}-{c1|c2}-scimark, \
     ${jprt.my.solaris.i586}-product-{c1|c2}-runThese_Xcomp, \
-    ${jprt.my.solaris.i586}-product-c2-runThese_Xcomp_2, \
-    ${jprt.my.solaris.i586}-fastdebug-c1-runThese_Xcomp_2, \
+    ${jprt.my.solaris.i586}-fastdebug-c1-runThese_Xcomp, \
     ${jprt.my.solaris.i586}-fastdebug-c1-runThese_Xshare, \
     ${jprt.my.solaris.i586}-product-c1-GCBasher_default, \
     ${jprt.my.solaris.i586}-product-c1-GCBasher_SerialGC, \
     ${jprt.my.solaris.i586}-product-c1-GCBasher_ParallelGC, \
     ${jprt.my.solaris.i586}-product-c1-GCBasher_ParNewGC, \
     ${jprt.my.solaris.i586}-product-c1-GCBasher_CMS, \
+    ${jprt.my.solaris.i586}-product-c1-GCBasher_G1, \
+    ${jprt.my.solaris.i586}-product-c1-GCBasher_ParOldGC, \
     ${jprt.my.solaris.i586}-fastdebug-c2-GCBasher_default, \
     ${jprt.my.solaris.i586}-fastdebug-c2-GCBasher_SerialGC, \
     ${jprt.my.solaris.i586}-fastdebug-c2-GCBasher_ParallelGC, \
     ${jprt.my.solaris.i586}-fastdebug-c2-GCBasher_ParNewGC, \
     ${jprt.my.solaris.i586}-fastdebug-c2-GCBasher_CMS, \
+    ${jprt.my.solaris.i586}-fastdebug-c2-GCBasher_G1, \
+    ${jprt.my.solaris.i586}-fastdebug-c2-GCBasher_ParOldGC, \
     ${jprt.my.solaris.i586}-product-c1-GCOld_default, \
     ${jprt.my.solaris.i586}-product-c1-GCOld_SerialGC, \
     ${jprt.my.solaris.i586}-product-c1-GCOld_ParallelGC, \
     ${jprt.my.solaris.i586}-product-c1-GCOld_ParNewGC, \
     ${jprt.my.solaris.i586}-product-c1-GCOld_CMS, \
+    ${jprt.my.solaris.i586}-product-c1-GCOld_G1, \
+    ${jprt.my.solaris.i586}-product-c1-GCOld_ParOldGC, \
     ${jprt.my.solaris.i586}-fastdebug-c2-jbb_default, \
     ${jprt.my.solaris.i586}-fastdebug-c2-jbb_ParallelGC, \
     ${jprt.my.solaris.i586}-fastdebug-c2-jbb_CMS, \
-    ${jprt.my.solaris.i586}-{product|fastdebug}-{c1|c2}-scimark_2, \
-    ${jprt.my.solaris.i586}-{product|fastdebug}-{c1|c2}-scimark_3
+    ${jprt.my.solaris.i586}-fastdebug-c2-jbb_G1, \
+    ${jprt.my.solaris.i586}-fastdebug-c2-jbb_ParOldGC
 
 jprt.my.linux.i586.test.targets = \
     ${jprt.my.linux.i586}-{product|fastdebug}-{c1|c2}-jvm98, \
     ${jprt.my.linux.i586}-{product|fastdebug}-{c1|c2}-scimark, \
     ${jprt.my.linux.i586}-product-c1-runThese_Xcomp, \
-    ${jprt.my.linux.i586}-product-c1-runThese_Xcomp_2, \
-    ${jprt.my.linux.i586}-product-c1-runThese_Xcomp_3, \
     ${jprt.my.linux.i586}-fastdebug-c1-runThese_Xshare, \
     ${jprt.my.linux.i586}-fastdebug-c2-runThese_Xcomp, \
-    ${jprt.my.linux.i586}-fastdebug-c2-runThese_Xcomp_2, \
     ${jprt.my.linux.i586}-{product|fastdebug}-{c1|c2}-GCBasher_default, \
     ${jprt.my.linux.i586}-{product|fastdebug}-{c1|c2}-GCBasher_SerialGC, \
     ${jprt.my.linux.i586}-{product|fastdebug}-{c1|c2}-GCBasher_ParallelGC, \
     ${jprt.my.linux.i586}-{product|fastdebug}-{c1|c2}-GCBasher_ParNewGC, \
     ${jprt.my.linux.i586}-{product|fastdebug}-{c1|c2}-GCBasher_CMS, \
+    ${jprt.my.linux.i586}-{product|fastdebug}-{c1|c2}-GCBasher_G1, \
+    ${jprt.my.linux.i586}-{product|fastdebug}-{c1|c2}-GCBasher_ParOldGC, \
     ${jprt.my.linux.i586}-product-{c1|c2}-GCOld_default, \
     ${jprt.my.linux.i586}-product-{c1|c2}-GCOld_SerialGC, \
     ${jprt.my.linux.i586}-product-{c1|c2}-GCOld_ParallelGC, \
     ${jprt.my.linux.i586}-product-{c1|c2}-GCOld_ParNewGC, \
     ${jprt.my.linux.i586}-product-{c1|c2}-GCOld_CMS, \
+    ${jprt.my.linux.i586}-product-{c1|c2}-GCOld_G1, \
+    ${jprt.my.linux.i586}-product-{c1|c2}-GCOld_ParOldGC, \
     ${jprt.my.linux.i586}-{product|fastdebug}-c1-jbb_default, \
     ${jprt.my.linux.i586}-{product|fastdebug}-c1-jbb_ParallelGC, \
     ${jprt.my.linux.i586}-{product|fastdebug}-c1-jbb_CMS, \
-    ${jprt.my.linux.i586}-{product|fastdebug}-c2-scimark_2, \
-    ${jprt.my.linux.i586}-{product|fastdebug}-c2-scimark_3
+    ${jprt.my.linux.i586}-{product|fastdebug}-c1-jbb_G1, \
+    ${jprt.my.linux.i586}-{product|fastdebug}-c1-jbb_ParOldGC
 
 jprt.my.linux.x64.test.targets = \
     ${jprt.my.linux.x64}-{product|fastdebug}-c2-jvm98, \
@@ -230,15 +229,19 @@
     ${jprt.my.linux.x64}-{product|fastdebug}-c2-GCBasher_ParallelGC, \
     ${jprt.my.linux.x64}-{product|fastdebug}-c2-GCBasher_ParNewGC, \
     ${jprt.my.linux.x64}-{product|fastdebug}-c2-GCBasher_CMS, \
+    ${jprt.my.linux.x64}-{product|fastdebug}-c2-GCBasher_G1, \
+    ${jprt.my.linux.x64}-{product|fastdebug}-c2-GCBasher_ParOldGC, \
     ${jprt.my.linux.x64}-{product|fastdebug}-c2-GCOld_default, \
     ${jprt.my.linux.x64}-{product|fastdebug}-c2-GCOld_SerialGC, \
     ${jprt.my.linux.x64}-{product|fastdebug}-c2-GCOld_ParallelGC, \
     ${jprt.my.linux.x64}-{product|fastdebug}-c2-GCOld_ParNewGC, \
     ${jprt.my.linux.x64}-{product|fastdebug}-c2-GCOld_CMS, \
+    ${jprt.my.linux.x64}-{product|fastdebug}-c2-GCOld_G1, \
+    ${jprt.my.linux.x64}-{product|fastdebug}-c2-GCOld_ParOldGC, \
     ${jprt.my.linux.x64}-{product|fastdebug}-c2-jbb_default, \
     ${jprt.my.linux.x64}-{product|fastdebug}-c2-jbb_ParallelGC, \
-    ${jprt.my.linux.x64}-{product|fastdebug}-c2-scimark_2, \
-    ${jprt.my.linux.x64}-{product|fastdebug}-c2-scimark_3
+    ${jprt.my.linux.x64}-{product|fastdebug}-c2-jbb_G1, \
+    ${jprt.my.linux.x64}-{product|fastdebug}-c2-jbb_ParOldGC
 
 jprt.my.windows.i586.test.targets = \
     ${jprt.my.windows.i586}-{product|fastdebug}-{c1|c2}-jvm98, \
@@ -251,16 +254,20 @@
     ${jprt.my.windows.i586}-{product|fastdebug}-{c1|c2}-GCBasher_ParallelGC, \
     ${jprt.my.windows.i586}-{product|fastdebug}-{c1|c2}-GCBasher_ParNewGC, \
     ${jprt.my.windows.i586}-{product|fastdebug}-{c1|c2}-GCBasher_CMS, \
+    ${jprt.my.windows.i586}-{product|fastdebug}-{c1|c2}-GCBasher_G1, \
+    ${jprt.my.windows.i586}-{product|fastdebug}-{c1|c2}-GCBasher_ParOldGC, \
     ${jprt.my.windows.i586}-product-{c1|c2}-GCOld_default, \
     ${jprt.my.windows.i586}-product-{c1|c2}-GCOld_SerialGC, \
     ${jprt.my.windows.i586}-product-{c1|c2}-GCOld_ParallelGC, \
     ${jprt.my.windows.i586}-product-{c1|c2}-GCOld_ParNewGC, \
     ${jprt.my.windows.i586}-product-{c1|c2}-GCOld_CMS, \
+    ${jprt.my.windows.i586}-product-{c1|c2}-GCOld_G1, \
+    ${jprt.my.windows.i586}-product-{c1|c2}-GCOld_ParOldGC, \
     ${jprt.my.windows.i586}-{product|fastdebug}-{c1|c2}-jbb_default, \
     ${jprt.my.windows.i586}-product-{c1|c2}-jbb_ParallelGC, \
     ${jprt.my.windows.i586}-product-{c1|c2}-jbb_CMS, \
-    ${jprt.my.windows.i586}-product-{c1|c2}-scimark_2, \
-    ${jprt.my.windows.i586}-product-{c1|c2}-scimark_3
+    ${jprt.my.windows.i586}-product-{c1|c2}-jbb_G1, \
+    ${jprt.my.windows.i586}-product-{c1|c2}-jbb_ParOldGC
 
 jprt.my.windows.x64.test.targets = \
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-jvm98, \
@@ -272,16 +279,20 @@
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCBasher_ParallelGC, \
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCBasher_ParNewGC, \
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCBasher_CMS, \
+    ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCBasher_G1, \
+    ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCBasher_ParOldGC, \
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCOld_default, \
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCOld_SerialGC, \
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCOld_ParallelGC, \
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCOld_ParNewGC, \
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCOld_CMS, \
+    ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCOld_G1, \
+    ${jprt.my.windows.x64}-{product|fastdebug}-c2-GCOld_ParOldGC, \
     ${jprt.my.windows.x64}-{product|fastdebug}-c2-jbb_default, \
     ${jprt.my.windows.x64}-product-c2-jbb_CMS, \
     ${jprt.my.windows.x64}-product-c2-jbb_ParallelGC, \
-    ${jprt.my.windows.x64}-{product|fastdebug}-c2-scimark_2, \
-    ${jprt.my.windows.x64}-{product|fastdebug}-c2-scimark_3
+    ${jprt.my.windows.x64}-product-c2-jbb_G1, \
+    ${jprt.my.windows.x64}-product-c2-jbb_ParOldGC
 
 # The complete list of test targets for jprt
 
--- a/src/share/vm/gc_implementation/g1/concurrentG1Refine.cpp	Thu Mar 12 18:17:25 2009 -0700
+++ b/src/share/vm/gc_implementation/g1/concurrentG1Refine.cpp	Wed Mar 18 11:37:48 2009 -0400
@@ -145,14 +145,9 @@
   if (G1RSBarrierUseQueue) {
     DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set();
     dcqs.abandon_logs();
-    if (_cg1rThread->do_traversal()) {
-      _pya = PYA_restart;
-    } else {
-      _cg1rThread->set_do_traversal(true);
-      // Reset the post-yield actions.
-      _pya = PYA_continue;
-      _last_pya = PYA_continue;
-    }
+    // Reset the post-yield actions.
+    _pya = PYA_continue;
+    _last_pya = PYA_continue;
   } else {
     _pya = PYA_restart;
   }
--- a/src/share/vm/gc_implementation/g1/concurrentMark.cpp	Thu Mar 12 18:17:25 2009 -0700
+++ b/src/share/vm/gc_implementation/g1/concurrentMark.cpp	Wed Mar 18 11:37:48 2009 -0400
@@ -1232,7 +1232,16 @@
     if (!_final && _regions_done == 0)
       _start_vtime_sec = os::elapsedVTime();
 
-    if (hr->continuesHumongous()) return false;
+    if (hr->continuesHumongous()) {
+      HeapRegion* hum_start = hr->humongous_start_region();
+      // If the head region of the humongous region has been determined
+      // to be alive, then all the tail regions should be marked
+      // such as well.
+      if (_region_bm->at(hum_start->hrs_index())) {
+        _region_bm->par_at_put(hr->hrs_index(), 1);
+      }
+      return false;
+    }
 
     HeapWord* nextTop = hr->next_top_at_mark_start();
     HeapWord* start   = hr->top_at_conc_mark_count();
--- a/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp	Thu Mar 12 18:17:25 2009 -0700
+++ b/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp	Wed Mar 18 11:37:48 2009 -0400
@@ -786,6 +786,12 @@
   }
 }
 
+void G1CollectedHeap::abandon_gc_alloc_regions() {
+  // first, make sure that the GC alloc region list is empty (it should!)
+  assert(_gc_alloc_region_list == NULL, "invariant");
+  release_gc_alloc_regions(true /* totally */);
+}
+
 class PostMCRemSetClearClosure: public HeapRegionClosure {
   ModRefBarrierSet* _mr_bs;
 public:
@@ -914,6 +920,7 @@
 
     // Make sure we'll choose a new allocation region afterwards.
     abandon_cur_alloc_region();
+    abandon_gc_alloc_regions();
     assert(_cur_alloc_region == NULL, "Invariant.");
     g1_rem_set()->as_HRInto_G1RemSet()->cleanupHRRS();
     tear_down_region_lists();
@@ -954,6 +961,7 @@
     if (VerifyAfterGC && total_collections() >= VerifyGCStartAt) {
       HandleMark hm;  // Discard invalid handles created during verification
       gclog_or_tty->print(" VerifyAfterGC:");
+      prepare_for_verify();
       Universe::verify(false);
     }
     NOT_PRODUCT(ref_processor()->verify_no_references_recorded());
@@ -1306,7 +1314,7 @@
 }
 
 void G1CollectedHeap::shrink(size_t shrink_bytes) {
-  release_gc_alloc_regions();
+  release_gc_alloc_regions(true /* totally */);
   tear_down_region_lists();  // We will rebuild them in a moment.
   shrink_helper(shrink_bytes);
   rebuild_region_lists();
@@ -1345,8 +1353,7 @@
   _gc_time_stamp(0),
   _surviving_young_words(NULL),
   _in_cset_fast_test(NULL),
-  _in_cset_fast_test_base(NULL)
-{
+  _in_cset_fast_test_base(NULL) {
   _g1h = this; // To catch bugs.
   if (_process_strong_tasks == NULL || !_process_strong_tasks->valid()) {
     vm_exit_during_initialization("Failed necessary allocation.");
@@ -1371,9 +1378,19 @@
   }
 
   for (int ap = 0; ap < GCAllocPurposeCount; ++ap) {
-    _gc_alloc_regions[ap]       = NULL;
-    _gc_alloc_region_counts[ap] = 0;
-  }
+    _gc_alloc_regions[ap]          = NULL;
+    _gc_alloc_region_counts[ap]    = 0;
+    _retained_gc_alloc_regions[ap] = NULL;
+    // by default, we do not retain a GC alloc region for each ap;
+    // we'll override this, when appropriate, below
+    _retain_gc_alloc_region[ap]    = false;
+  }
+
+  // We will try to remember the last half-full tenured region we
+  // allocated to at the end of a collection so that we can re-use it
+  // during the next collection.
+  _retain_gc_alloc_region[GCAllocForTenured]  = true;
+
   guarantee(_task_queues != NULL, "task_queues allocation failure.");
 }
 
@@ -2119,15 +2136,7 @@
   bool doHeapRegion(HeapRegion* r) {
     guarantee(_par || r->claim_value() == HeapRegion::InitialClaimValue,
               "Should be unclaimed at verify points.");
-    if (r->isHumongous()) {
-      if (r->startsHumongous()) {
-        // Verify the single H object.
-        oop(r->bottom())->verify();
-        size_t word_sz = oop(r->bottom())->size();
-        guarantee(r->top() == r->bottom() + word_sz,
-                  "Only one object in a humongous region");
-      }
-    } else {
+    if (!r->continuesHumongous()) {
       VerifyObjsInRegionClosure not_dead_yet_cl(r);
       r->verify(_allow_dirty);
       r->object_iterate(&not_dead_yet_cl);
@@ -2179,6 +2188,7 @@
     _g1h(g1h), _allow_dirty(allow_dirty) { }
 
   void work(int worker_i) {
+    HandleMark hm;
     VerifyRegionClosure blk(_allow_dirty, true);
     _g1h->heap_region_par_iterate_chunked(&blk, worker_i,
                                           HeapRegion::ParVerifyClaimValue);
@@ -2644,7 +2654,7 @@
         popular_region->set_popular_pending(false);
       }
 
-      release_gc_alloc_regions();
+      release_gc_alloc_regions(false /* totally */);
 
       cleanup_surviving_young_words();
 
@@ -2697,6 +2707,7 @@
     if (VerifyAfterGC && total_collections() >= VerifyGCStartAt) {
       HandleMark hm;  // Discard invalid handles created during verification
       gclog_or_tty->print(" VerifyAfterGC:");
+      prepare_for_verify();
       Universe::verify(false);
     }
 
@@ -2735,6 +2746,10 @@
 
 void G1CollectedHeap::set_gc_alloc_region(int purpose, HeapRegion* r) {
   assert(purpose >= 0 && purpose < GCAllocPurposeCount, "invalid purpose");
+  // make sure we don't call set_gc_alloc_region() multiple times on
+  // the same region
+  assert(r == NULL || !r->is_gc_alloc_region(),
+         "shouldn't already be a GC alloc region");
   HeapWord* original_top = NULL;
   if (r != NULL)
     original_top = r->top();
@@ -2824,6 +2839,12 @@
   while (_gc_alloc_region_list != NULL) {
     HeapRegion* r = _gc_alloc_region_list;
     assert(r->is_gc_alloc_region(), "Invariant.");
+    // We need HeapRegion::oops_on_card_seq_iterate_careful() to work on
+    // newly allocated data in order to be able to apply deferred updates
+    // before the GC is done for verification purposes (i.e to allow
+    // G1HRRSFlushLogBuffersOnVerify). It's safe thing to do after the
+    // collection.
+    r->ContiguousSpace::set_saved_mark();
     _gc_alloc_region_list = r->next_gc_alloc_region();
     r->set_next_gc_alloc_region(NULL);
     r->set_is_gc_alloc_region(false);
@@ -2851,23 +2872,55 @@
 }
 
 void G1CollectedHeap::get_gc_alloc_regions() {
+  // First, let's check that the GC alloc region list is empty (it should)
+  assert(_gc_alloc_region_list == NULL, "invariant");
+
   for (int ap = 0; ap < GCAllocPurposeCount; ++ap) {
+    assert(_gc_alloc_regions[ap] == NULL, "invariant");
+
     // Create new GC alloc regions.
-    HeapRegion* alloc_region = _gc_alloc_regions[ap];
-    // Clear this alloc region, so that in case it turns out to be
-    // unacceptable, we end up with no allocation region, rather than a bad
-    // one.
-    _gc_alloc_regions[ap] = NULL;
-    if (alloc_region == NULL || alloc_region->in_collection_set()) {
-      // Can't re-use old one.  Allocate a new one.
+    HeapRegion* alloc_region = _retained_gc_alloc_regions[ap];
+    _retained_gc_alloc_regions[ap] = NULL;
+
+    if (alloc_region != NULL) {
+      assert(_retain_gc_alloc_region[ap], "only way to retain a GC region");
+
+      // let's make sure that the GC alloc region is not tagged as such
+      // outside a GC operation
+      assert(!alloc_region->is_gc_alloc_region(), "sanity");
+
+      if (alloc_region->in_collection_set() ||
+          alloc_region->top() == alloc_region->end() ||
+          alloc_region->top() == alloc_region->bottom()) {
+        // we will discard the current GC alloc region if it's in the
+        // collection set (it can happen!), if it's already full (no
+        // point in using it), or if it's empty (this means that it
+        // was emptied during a cleanup and it should be on the free
+        // list now).
+
+        alloc_region = NULL;
+      }
+    }
+
+    if (alloc_region == NULL) {
+      // we will get a new GC alloc region
       alloc_region = newAllocRegionWithExpansion(ap, 0);
     }
+
     if (alloc_region != NULL) {
+      assert(_gc_alloc_regions[ap] == NULL, "pre-condition");
       set_gc_alloc_region(ap, alloc_region);
     }
+
+    assert(_gc_alloc_regions[ap] == NULL ||
+           _gc_alloc_regions[ap]->is_gc_alloc_region(),
+           "the GC alloc region should be tagged as such");
+    assert(_gc_alloc_regions[ap] == NULL ||
+           _gc_alloc_regions[ap] == _gc_alloc_region_list,
+           "the GC alloc region should be the same as the GC alloc list head");
   }
   // Set alternative regions for allocation purposes that have reached
-  // thier limit.
+  // their limit.
   for (int ap = 0; ap < GCAllocPurposeCount; ++ap) {
     GCAllocPurpose alt_purpose = g1_policy()->alternative_purpose(ap);
     if (_gc_alloc_regions[ap] == NULL && alt_purpose != ap) {
@@ -2877,27 +2930,55 @@
   assert(check_gc_alloc_regions(), "alloc regions messed up");
 }
 
-void G1CollectedHeap::release_gc_alloc_regions() {
+void G1CollectedHeap::release_gc_alloc_regions(bool totally) {
   // We keep a separate list of all regions that have been alloc regions in
-  // the current collection pause.  Forget that now.
+  // the current collection pause. Forget that now. This method will
+  // untag the GC alloc regions and tear down the GC alloc region
+  // list. It's desirable that no regions are tagged as GC alloc
+  // outside GCs.
   forget_alloc_region_list();
 
   // The current alloc regions contain objs that have survived
   // collection. Make them no longer GC alloc regions.
   for (int ap = 0; ap < GCAllocPurposeCount; ++ap) {
     HeapRegion* r = _gc_alloc_regions[ap];
-    if (r != NULL && r->is_empty()) {
-      {
+    _retained_gc_alloc_regions[ap] = NULL;
+
+    if (r != NULL) {
+      // we retain nothing on _gc_alloc_regions between GCs
+      set_gc_alloc_region(ap, NULL);
+      _gc_alloc_region_counts[ap] = 0;
+
+      if (r->is_empty()) {
+        // we didn't actually allocate anything in it; let's just put
+        // it on the free list
         MutexLockerEx x(ZF_mon, Mutex::_no_safepoint_check_flag);
         r->set_zero_fill_complete();
         put_free_region_on_list_locked(r);
+      } else if (_retain_gc_alloc_region[ap] && !totally) {
+        // retain it so that we can use it at the beginning of the next GC
+        _retained_gc_alloc_regions[ap] = r;
       }
     }
-    // set_gc_alloc_region will also NULLify all aliases to the region
-    set_gc_alloc_region(ap, NULL);
-    _gc_alloc_region_counts[ap] = 0;
-  }
-}
+  }
+}
+
+#ifndef PRODUCT
+// Useful for debugging
+
+void G1CollectedHeap::print_gc_alloc_regions() {
+  gclog_or_tty->print_cr("GC alloc regions");
+  for (int ap = 0; ap < GCAllocPurposeCount; ++ap) {
+    HeapRegion* r = _gc_alloc_regions[ap];
+    if (r == NULL) {
+      gclog_or_tty->print_cr("  %2d : "PTR_FORMAT, ap, NULL);
+    } else {
+      gclog_or_tty->print_cr("  %2d : "PTR_FORMAT" "SIZE_FORMAT,
+                             ap, r->bottom(), r->used());
+    }
+  }
+}
+#endif // PRODUCT
 
 void G1CollectedHeap::init_for_evac_failure(OopsInHeapRegionClosure* cl) {
   _drain_in_progress = false;
@@ -3658,7 +3739,9 @@
   CardTableModRefBS* ctbs()                      { return _ct_bs; }
 
   void immediate_rs_update(HeapRegion* from, oop* p, int tid) {
-    _g1_rem->par_write_ref(from, p, tid);
+    if (!from->is_survivor()) {
+      _g1_rem->par_write_ref(from, p, tid);
+    }
   }
 
   void deferred_rs_update(HeapRegion* from, oop* p, int tid) {
--- a/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Thu Mar 12 18:17:25 2009 -0700
+++ b/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	Wed Mar 18 11:37:48 2009 -0400
@@ -172,7 +172,6 @@
     NumAPIs = HeapRegion::MaxAge
   };
 
-
   // The one and only G1CollectedHeap, so static functions can find it.
   static G1CollectedHeap* _g1h;
 
@@ -217,11 +216,20 @@
 
   // Postcondition: cur_alloc_region == NULL.
   void abandon_cur_alloc_region();
+  void abandon_gc_alloc_regions();
 
   // The to-space memory regions into which objects are being copied during
   // a GC.
   HeapRegion* _gc_alloc_regions[GCAllocPurposeCount];
   size_t _gc_alloc_region_counts[GCAllocPurposeCount];
+  // These are the regions, one per GCAllocPurpose, that are half-full
+  // at the end of a collection and that we want to reuse during the
+  // next collection.
+  HeapRegion* _retained_gc_alloc_regions[GCAllocPurposeCount];
+  // This specifies whether we will keep the last half-full region at
+  // the end of a collection so that it can be reused during the next
+  // collection (this is specified per GCAllocPurpose)
+  bool _retain_gc_alloc_region[GCAllocPurposeCount];
 
   // A list of the regions that have been set to be alloc regions in the
   // current collection.
@@ -589,8 +597,21 @@
 
   // Ensure that the relevant gc_alloc regions are set.
   void get_gc_alloc_regions();
-  // We're done with GC alloc regions; release them, as appropriate.
-  void release_gc_alloc_regions();
+  // We're done with GC alloc regions. We are going to tear down the
+  // gc alloc list and remove the gc alloc tag from all the regions on
+  // that list. However, we will also retain the last (i.e., the one
+  // that is half-full) GC alloc region, per GCAllocPurpose, for
+  // possible reuse during the next collection, provided
+  // _retain_gc_alloc_region[] indicates that it should be the
+  // case. Said regions are kept in the _retained_gc_alloc_regions[]
+  // array. If the parameter totally is set, we will not retain any
+  // regions, irrespective of what _retain_gc_alloc_region[]
+  // indicates.
+  void release_gc_alloc_regions(bool totally);
+#ifndef PRODUCT
+  // Useful for debugging.
+  void print_gc_alloc_regions();
+#endif // !PRODUCT
 
   // ("Weak") Reference processing support
   ReferenceProcessor* _ref_processor;
--- a/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp	Thu Mar 12 18:17:25 2009 -0700
+++ b/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp	Wed Mar 18 11:37:48 2009 -0400
@@ -1087,6 +1087,7 @@
 
   assert(_g1->used_regions() == _g1->recalculate_used_regions(),
          "sanity");
+  assert(_g1->used() == _g1->recalculate_used(), "sanity");
 
   double s_w_t_ms = (start_time_sec - _stop_world_start) * 1000.0;
   _all_stop_world_times_ms->add(s_w_t_ms);
--- a/src/share/vm/gc_implementation/g1/g1RemSet.cpp	Thu Mar 12 18:17:25 2009 -0700
+++ b/src/share/vm/gc_implementation/g1/g1RemSet.cpp	Wed Mar 18 11:37:48 2009 -0400
@@ -502,14 +502,17 @@
   }
 
   if (ParallelGCThreads > 0) {
-    // This is a temporary change to serialize the update and scanning
-    // of remembered sets. There are some race conditions when this is
-    // done in parallel and they are causing failures. When we resolve
-    // said race conditions, we'll revert back to parallel remembered
-    // set updating and scanning. See CRs 6677707 and 6677708.
-    if (worker_i == 0) {
+    // The two flags below were introduced temporarily to serialize
+    // the updating and scanning of remembered sets. There are some
+    // race conditions when these two operations are done in parallel
+    // and they are causing failures. When we resolve said race
+    // conditions, we'll revert back to parallel remembered set
+    // updating and scanning. See CRs 6677707 and 6677708.
+    if (G1EnableParallelRSetUpdating || (worker_i == 0)) {
       updateRS(worker_i);
       scanNewRefsRS(oc, worker_i);
+    }
+    if (G1EnableParallelRSetScanning || (worker_i == 0)) {
       scanRS(oc, worker_i);
     }
   } else {
@@ -716,8 +719,7 @@
   bool doHeapRegion(HeapRegion* r) {
     if (!r->in_collection_set() &&
         !r->continuesHumongous() &&
-        !r->is_young() &&
-        !r->is_survivor()) {
+        !r->is_young()) {
       _update_rs_oop_cl.set_from(r);
       UpdateRSObjectClosure update_rs_obj_cl(&_update_rs_oop_cl);
 
@@ -854,7 +856,7 @@
   // before all the cards on the region are dirtied. This is unlikely,
   // and it doesn't happen often, but it can happen. So, the extra
   // check below filters out those cards.
-  if (r->is_young() || r->is_survivor()) {
+  if (r->is_young()) {
     return;
   }
   // While we are processing RSet buffers during the collection, we
@@ -1025,7 +1027,9 @@
   }
 }
 void HRInto_G1RemSet::prepare_for_verify() {
-  if (G1HRRSFlushLogBuffersOnVerify && VerifyBeforeGC && !_g1->full_collection()) {
+  if (G1HRRSFlushLogBuffersOnVerify &&
+      (VerifyBeforeGC || VerifyAfterGC)
+      &&  !_g1->full_collection()) {
     cleanupHRRS();
     _g1->set_refine_cte_cl_concurrency(false);
     if (SafepointSynchronize::is_at_safepoint()) {
@@ -1036,5 +1040,7 @@
     _cg1r->set_use_cache(false);
     updateRS(0);
     _cg1r->set_use_cache(cg1r_use_cache);
+
+    assert(JavaThread::dirty_card_queue_set().completed_buffers_num() == 0, "All should be consumed");
   }
 }
--- a/src/share/vm/gc_implementation/g1/g1_globals.hpp	Thu Mar 12 18:17:25 2009 -0700
+++ b/src/share/vm/gc_implementation/g1/g1_globals.hpp	Wed Mar 18 11:37:48 2009 -0400
@@ -295,6 +295,14 @@
                                                                             \
   product(uintx, G1FixedSurvivorSpaceSize, 0,                               \
           "If non-0 is the size of the G1 survivor space, "                 \
-          "otherwise SurvivorRatio is used to determine the size")
+          "otherwise SurvivorRatio is used to determine the size")          \
+                                                                            \
+  experimental(bool, G1EnableParallelRSetUpdating, false,                   \
+          "Enables the parallelization of remembered set updating "         \
+          "during evacuation pauses")                                       \
+                                                                            \
+  experimental(bool, G1EnableParallelRSetScanning, false,                   \
+          "Enables the parallelization of remembered set scanning "         \
+          "during evacuation pauses")
 
 G1_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG, DECLARE_MANAGEABLE_FLAG, DECLARE_PRODUCT_RW_FLAG)
--- a/src/share/vm/gc_implementation/parNew/parGCAllocBuffer.hpp	Thu Mar 12 18:17:25 2009 -0700
+++ b/src/share/vm/gc_implementation/parNew/parGCAllocBuffer.hpp	Wed Mar 18 11:37:48 2009 -0400
@@ -63,9 +63,8 @@
   // return NULL.
   HeapWord* allocate(size_t word_sz) {
     HeapWord* res = _top;
-    HeapWord* new_top = _top + word_sz;
-    if (new_top <= _end) {
-      _top = new_top;
+    if (pointer_delta(_end, _top) >= word_sz) {
+      _top = _top + word_sz;
       return res;
     } else {
       return NULL;
@@ -75,10 +74,9 @@
   // Undo the last allocation in the buffer, which is required to be of the
   // "obj" of the given "word_sz".
   void undo_allocation(HeapWord* obj, size_t word_sz) {
-    assert(_top - word_sz >= _bottom
-           && _top - word_sz == obj,
-           "Bad undo_allocation");
-    _top = _top - word_sz;
+    assert(pointer_delta(_top, _bottom) >= word_sz, "Bad undo");
+    assert(pointer_delta(_top, obj)     == word_sz, "Bad undo");
+    _top = obj;
   }
 
   // The total (word) size of the buffer, including both allocated and