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diff src/share/vm/gc_implementation/parallelScavenge/psTasks.cpp @ 1706:9d7a8ab3736b

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6962589: remove breadth first scanning code from parallel gc Summary: Remove the breadth-first copying order from ParallelScavenge and use depth-first by default. Reviewed-by: jcoomes, ysr, johnc
author tonyp
date Thu, 22 Jul 2010 10:27:41 -0400
parents a93a9eda13f7
children f95d63e2154a
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/parallelScavenge/psTasks.cpp	Mon Aug 02 12:51:43 2010 -0700
+++ b/src/share/vm/gc_implementation/parallelScavenge/psTasks.cpp	Thu Jul 22 10:27:41 2010 -0400
@@ -144,29 +144,15 @@
             "stacks should be empty at this point");
 
   int random_seed = 17;
-  if (pm->depth_first()) {
-    while(true) {
-      StarTask p;
-      if (PSPromotionManager::steal_depth(which, &random_seed, p)) {
-        TASKQUEUE_STATS_ONLY(pm->record_steal(p));
-        pm->process_popped_location_depth(p);
-        pm->drain_stacks_depth(true);
-      } else {
-        if (terminator()->offer_termination()) {
-          break;
-        }
-      }
-    }
-  } else {
-    while(true) {
-      oop obj;
-      if (PSPromotionManager::steal_breadth(which, &random_seed, obj)) {
-        obj->copy_contents(pm);
-        pm->drain_stacks_breadth(true);
-      } else {
-        if (terminator()->offer_termination()) {
-          break;
-        }
+  while(true) {
+    StarTask p;
+    if (PSPromotionManager::steal_depth(which, &random_seed, p)) {
+      TASKQUEUE_STATS_ONLY(pm->record_steal(p));
+      pm->process_popped_location_depth(p);
+      pm->drain_stacks_depth(true);
+    } else {
+      if (terminator()->offer_termination()) {
+        break;
       }
     }
   }