6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap

Summary: Remove two unused parameters from the mem_allocate() method and update its uses accordingly.
Reviewed-by: stefank, johnc

src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp

@@ -829,12 +829,8 @@ HeapWord* G1CollectedHeap::allocate_new_tlab(size_t word_size) {
 
 HeapWord*
 G1CollectedHeap::mem_allocate(size_t word_size,
-                              bool   is_noref,
-                              bool   is_tlab,
                               bool*  gc_overhead_limit_was_exceeded) {
   assert_heap_not_locked_and_not_at_safepoint();
-  assert(!is_tlab, "mem_allocate() this should not be called directly "
-         "to allocate TLABs");
 
   // Loop until the allocation is satisified, or unsatisfied after GC.
   for (int try_count = 1; /* we'll return */; try_count += 1) {
@@ -2622,11 +2618,6 @@ size_t G1CollectedHeap::unsafe_max_tlab_alloc(Thread* ignored) const {
   }
 }
 
-size_t G1CollectedHeap::large_typearray_limit() {
-  // FIXME
-  return HeapRegion::GrainBytes/HeapWordSize;
-}
-
 size_t G1CollectedHeap::max_capacity() const {
   return _g1_reserved.byte_size();
 }

src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp

@@ -446,8 +446,7 @@ protected:
   // * All allocation requests for new TLABs should go to
   //   allocate_new_tlab().
   //
-  // * All non-TLAB allocation requests should go to mem_allocate()
-  //   and mem_allocate() should never be called with is_tlab == true.
+  // * All non-TLAB allocation requests should go to mem_allocate().
   //
   // * If either call cannot satisfy the allocation request using the
   //   current allocating region, they will try to get a new one. If
@@ -467,8 +466,6 @@ protected:
   virtual HeapWord* allocate_new_tlab(size_t word_size);
 
   virtual HeapWord* mem_allocate(size_t word_size,
-                                 bool   is_noref,
-                                 bool   is_tlab, /* expected to be false */
                                  bool*  gc_overhead_limit_was_exceeded);
 
   // The following three methods take a gc_count_before_ret
@@ -1304,10 +1301,6 @@ public:
     return true;
   }
 
-  // The boundary between a "large" and "small" array of primitives, in
-  // words.
-  virtual size_t large_typearray_limit();
-
   // Returns "true" iff the given word_size is "very large".
   static bool isHumongous(size_t word_size) {
     // Note this has to be strictly greater-than as the TLABs

src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp

@@ -386,8 +386,6 @@ bool ParallelScavengeHeap::is_in_partial_collection(const void *p) {
 // we rely on the size_policy object to force a bail out.
 HeapWord* ParallelScavengeHeap::mem_allocate(
                                      size_t size,
-                                     bool is_noref,
-                                     bool is_tlab,
                                      bool* gc_overhead_limit_was_exceeded) {
   assert(!SafepointSynchronize::is_at_safepoint(), "should not be at safepoint");
   assert(Thread::current() != (Thread*)VMThread::vm_thread(), "should not be in vm thread");
@@ -398,7 +396,7 @@ HeapWord* ParallelScavengeHeap::mem_allocate(
   // limit is being exceeded as checked below.
   *gc_overhead_limit_was_exceeded = false;
 
-  HeapWord* result = young_gen()->allocate(size, is_tlab);
+  HeapWord* result = young_gen()->allocate(size);
 
   uint loop_count = 0;
   uint gc_count = 0;
@@ -419,7 +417,7 @@ HeapWord* ParallelScavengeHeap::mem_allocate(
       MutexLocker ml(Heap_lock);
       gc_count = Universe::heap()->total_collections();
 
-      result = young_gen()->allocate(size, is_tlab);
+      result = young_gen()->allocate(size);
 
       // (1) If the requested object is too large to easily fit in the
       //     young_gen, or
@@ -433,21 +431,13 @@ HeapWord* ParallelScavengeHeap::mem_allocate(
       if (result != NULL) {
         return result;
       }
-      if (!is_tlab &&
-          size >= (young_gen()->eden_space()->capacity_in_words(Thread::current()) / 2)) {
-        result = old_gen()->allocate(size, is_tlab);
+      if (size >= (young_gen()->eden_space()->capacity_in_words(Thread::current()) / 2)) {
+        result = old_gen()->allocate(size);
         if (result != NULL) {
           return result;
         }
       }
       if (GC_locker::is_active_and_needs_gc()) {
-        // GC is locked out. If this is a TLAB allocation,
-        // return NULL; the requestor will retry allocation
-        // of an idividual object at a time.
-        if (is_tlab) {
-          return NULL;
-        }
-
         // If this thread is not in a jni critical section, we stall
         // the requestor until the critical section has cleared and
         // GC allowed. When the critical section clears, a GC is
@@ -472,7 +462,7 @@ HeapWord* ParallelScavengeHeap::mem_allocate(
     if (result == NULL) {
 
       // Generate a VM operation
-      VM_ParallelGCFailedAllocation op(size, is_tlab, gc_count);
+      VM_ParallelGCFailedAllocation op(size, gc_count);
       VMThread::execute(&op);
 
       // Did the VM operation execute? If so, return the result directly.
@@ -526,7 +516,7 @@ HeapWord* ParallelScavengeHeap::mem_allocate(
     if ((result == NULL) && (QueuedAllocationWarningCount > 0) &&
         (loop_count % QueuedAllocationWarningCount == 0)) {
       warning("ParallelScavengeHeap::mem_allocate retries %d times \n\t"
-              " size=%d %s", loop_count, size, is_tlab ? "(TLAB)" : "");
+              " size=%d", loop_count, size);
     }
   }
 
@@ -539,7 +529,7 @@ HeapWord* ParallelScavengeHeap::mem_allocate(
 // time over limit here, that is the responsibility of the heap specific
 // collection methods. This method decides where to attempt allocations,
 // and when to attempt collections, but no collection specific policy.
-HeapWord* ParallelScavengeHeap::failed_mem_allocate(size_t size, bool is_tlab) {
+HeapWord* ParallelScavengeHeap::failed_mem_allocate(size_t size) {
   assert(SafepointSynchronize::is_at_safepoint(), "should be at safepoint");
   assert(Thread::current() == (Thread*)VMThread::vm_thread(), "should be in vm thread");
   assert(!Universe::heap()->is_gc_active(), "not reentrant");
@@ -553,7 +543,7 @@ HeapWord* ParallelScavengeHeap::failed_mem_allocate(size_t size, bool is_tlab) {
   // First level allocation failure, scavenge and allocate in young gen.
   GCCauseSetter gccs(this, GCCause::_allocation_failure);
   PSScavenge::invoke();
-  HeapWord* result = young_gen()->allocate(size, is_tlab);
+  HeapWord* result = young_gen()->allocate(size);
 
   // Second level allocation failure.
   //   Mark sweep and allocate in young generation.
@@ -562,28 +552,28 @@ HeapWord* ParallelScavengeHeap::failed_mem_allocate(size_t size, bool is_tlab) {
     // Don't mark sweep twice if so.
     if (mark_sweep_invocation_count == total_invocations()) {
       invoke_full_gc(false);
-      result = young_gen()->allocate(size, is_tlab);
+      result = young_gen()->allocate(size);
     }
   }
 
   // Third level allocation failure.
   //   After mark sweep and young generation allocation failure,
   //   allocate in old generation.
-  if (result == NULL && !is_tlab) {
-    result = old_gen()->allocate(size, is_tlab);
+  if (result == NULL) {
+    result = old_gen()->allocate(size);
   }
 
   // Fourth level allocation failure. We're running out of memory.
   //   More complete mark sweep and allocate in young generation.
   if (result == NULL) {
     invoke_full_gc(true);
-    result = young_gen()->allocate(size, is_tlab);
+    result = young_gen()->allocate(size);
   }
 
   // Fifth level allocation failure.
   //   After more complete mark sweep, allocate in old generation.
-  if (result == NULL && !is_tlab) {
-    result = old_gen()->allocate(size, is_tlab);
+  if (result == NULL) {
+    result = old_gen()->allocate(size);
   }
 
   return result;
@@ -761,7 +751,7 @@ size_t ParallelScavengeHeap::unsafe_max_tlab_alloc(Thread* thr) const {
 }
 
 HeapWord* ParallelScavengeHeap::allocate_new_tlab(size_t size) {
-  return young_gen()->allocate(size, true);
+  return young_gen()->allocate(size);
 }
 
 void ParallelScavengeHeap::accumulate_statistics_all_tlabs() {

src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.hpp

 /*
- * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -165,12 +165,13 @@ CollectorPolicy* collector_policy() const { return (CollectorPolicy*) _collector
   // an excessive amount of time is being spent doing collections
   // and caused a NULL to be returned.  If a NULL is not returned,
   // "gc_time_limit_was_exceeded" has an undefined meaning.
-
   HeapWord* mem_allocate(size_t size,
-                         bool is_noref,
-                         bool is_tlab,
                          bool* gc_overhead_limit_was_exceeded);
-  HeapWord* failed_mem_allocate(size_t size, bool is_tlab);
+
+  // Allocation attempt(s) during a safepoint. It should never be called
+  // to allocate a new TLAB as this allocation might be satisfied out
+  // of the old generation.
+  HeapWord* failed_mem_allocate(size_t size);
 
   HeapWord* permanent_mem_allocate(size_t size);
   HeapWord* failed_permanent_mem_allocate(size_t size);
@@ -194,8 +195,6 @@ CollectorPolicy* collector_policy() const { return (CollectorPolicy*) _collector
   inline void invoke_scavenge();
   inline void invoke_full_gc(bool maximum_compaction);
 
-  size_t large_typearray_limit() { return FastAllocateSizeLimit; }
-
   bool supports_inline_contig_alloc() const { return !UseNUMA; }
 
   HeapWord** top_addr() const { return !UseNUMA ? young_gen()->top_addr() : (HeapWord**)-1; }

src/share/vm/gc_implementation/parallelScavenge/psOldGen.cpp

@@ -182,12 +182,12 @@ size_t PSOldGen::contiguous_available() const {
 
 // Allocation. We report all successful allocations to the size policy
 // Note that the perm gen does not use this method, and should not!
-HeapWord* PSOldGen::allocate(size_t word_size, bool is_tlab) {
+HeapWord* PSOldGen::allocate(size_t word_size) {
   assert_locked_or_safepoint(Heap_lock);
-  HeapWord* res = allocate_noexpand(word_size, is_tlab);
+  HeapWord* res = allocate_noexpand(word_size);
 
   if (res == NULL) {
-    res = expand_and_allocate(word_size, is_tlab);
+    res = expand_and_allocate(word_size);
   }
 
   // Allocations in the old generation need to be reported
@@ -199,13 +199,12 @@ HeapWord* PSOldGen::allocate(size_t word_size, bool is_tlab) {
   return res;
 }
 
-HeapWord* PSOldGen::expand_and_allocate(size_t word_size, bool is_tlab) {
-  assert(!is_tlab, "TLAB's are not supported in PSOldGen");
+HeapWord* PSOldGen::expand_and_allocate(size_t word_size) {
   expand(word_size*HeapWordSize);
   if (GCExpandToAllocateDelayMillis > 0) {
     os::sleep(Thread::current(), GCExpandToAllocateDelayMillis, false);
   }
-  return allocate_noexpand(word_size, is_tlab);
+  return allocate_noexpand(word_size);
 }
 
 HeapWord* PSOldGen::expand_and_cas_allocate(size_t word_size) {

src/share/vm/gc_implementation/parallelScavenge/psOldGen.hpp

@@ -60,9 +60,8 @@ class PSOldGen : public CHeapObj {
   // Used when initializing the _name field.
   static inline const char* select_name();
 
-  HeapWord* allocate_noexpand(size_t word_size, bool is_tlab) {
+  HeapWord* allocate_noexpand(size_t word_size) {
     // We assume the heap lock is held here.
-    assert(!is_tlab, "Does not support TLAB allocation");
     assert_locked_or_safepoint(Heap_lock);
     HeapWord* res = object_space()->allocate(word_size);
     if (res != NULL) {
@@ -89,7 +88,7 @@ class PSOldGen : public CHeapObj {
     return (res == NULL) ? expand_and_cas_allocate(word_size) : res;
   }
 
-  HeapWord* expand_and_allocate(size_t word_size, bool is_tlab);
+  HeapWord* expand_and_allocate(size_t word_size);
   HeapWord* expand_and_cas_allocate(size_t word_size);
   void expand(size_t bytes);
   bool expand_by(size_t bytes);
@@ -164,7 +163,7 @@ class PSOldGen : public CHeapObj {
 
   // Allocation. We report all successful allocations to the size policy
   // Note that the perm gen does not use this method, and should not!
-  HeapWord* allocate(size_t word_size, bool is_tlab);
+  HeapWord* allocate(size_t word_size);
 
   // Iteration.
   void oop_iterate(OopClosure* cl) { object_space()->oop_iterate(cl); }

src/share/vm/gc_implementation/parallelScavenge/psPermGen.cpp

@@ -46,10 +46,10 @@ PSPermGen::PSPermGen(ReservedSpace rs, size_t alignment,
 
 HeapWord* PSPermGen::allocate_permanent(size_t size) {
   assert_locked_or_safepoint(Heap_lock);
-  HeapWord* obj = allocate_noexpand(size, false);
+  HeapWord* obj = allocate_noexpand(size);
 
   if (obj == NULL) {
-    obj = expand_and_allocate(size, false);
+    obj = expand_and_allocate(size);
   }
 
   return obj;

src/share/vm/gc_implementation/parallelScavenge/psYoungGen.hpp

@@ -157,7 +157,7 @@ class PSYoungGen : public CHeapObj {
   }
 
   // Allocation
-  HeapWord* allocate(size_t word_size, bool is_tlab) {
+  HeapWord* allocate(size_t word_size) {
     HeapWord* result = eden_space()->cas_allocate(word_size);
     return result;
   }

src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.cpp

@@ -33,10 +33,9 @@
 
 // The following methods are used by the parallel scavenge collector
 VM_ParallelGCFailedAllocation::VM_ParallelGCFailedAllocation(size_t size,
-  bool is_tlab, unsigned int gc_count) :
+                                                      unsigned int gc_count) :
   VM_GC_Operation(gc_count, GCCause::_allocation_failure),
   _size(size),
-  _is_tlab(is_tlab),
   _result(NULL)
 {
 }
@@ -48,7 +47,7 @@ void VM_ParallelGCFailedAllocation::doit() {
   assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap");
 
   GCCauseSetter gccs(heap, _gc_cause);
-  _result = heap->failed_mem_allocate(_size, _is_tlab);
+  _result = heap->failed_mem_allocate(_size);
 
   if (_result == NULL && GC_locker::is_active_and_needs_gc()) {
     set_gc_locked();

src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.hpp

 /*
- * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -32,12 +32,10 @@
 class VM_ParallelGCFailedAllocation: public VM_GC_Operation {
  private:
   size_t    _size;
-  bool      _is_tlab;
   HeapWord* _result;
 
  public:
-  VM_ParallelGCFailedAllocation(size_t size, bool is_tlab,
-                                unsigned int gc_count);
+  VM_ParallelGCFailedAllocation(size_t size, unsigned int gc_count);
 
   virtual VMOp_Type type() const {
     return VMOp_ParallelGCFailedAllocation;

src/share/vm/gc_interface/collectedHeap.hpp

 /*
- * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -93,7 +93,7 @@ class CollectedHeap : public CHeapObj {
   // pure virtual.
   void pre_initialize();
 
-  // Create a new tlab
+  // Create a new tlab. All TLAB allocations must go through this.
   virtual HeapWord* allocate_new_tlab(size_t size);
 
   // Accumulate statistics on all tlabs.
@@ -109,11 +109,11 @@ class CollectedHeap : public CHeapObj {
 
   // Allocate an uninitialized block of the given size, or returns NULL if
   // this is impossible.
-  inline static HeapWord* common_mem_allocate_noinit(size_t size, bool is_noref, TRAPS);
+  inline static HeapWord* common_mem_allocate_noinit(size_t size, TRAPS);
 
   // Like allocate_init, but the block returned by a successful allocation
   // is guaranteed initialized to zeros.
-  inline static HeapWord* common_mem_allocate_init(size_t size, bool is_noref, TRAPS);
+  inline static HeapWord* common_mem_allocate_init(size_t size, TRAPS);
 
   // Same as common_mem version, except memory is allocated in the permanent area
   // If there is no permanent area, revert to common_mem_allocate_noinit
@@ -322,7 +322,6 @@ class CollectedHeap : public CHeapObj {
   // General obj/array allocation facilities.
   inline static oop obj_allocate(KlassHandle klass, int size, TRAPS);
   inline static oop array_allocate(KlassHandle klass, int size, int length, TRAPS);
-  inline static oop large_typearray_allocate(KlassHandle klass, int size, int length, TRAPS);
 
   // Special obj/array allocation facilities.
   // Some heaps may want to manage "permanent" data uniquely. These default
@@ -345,16 +344,12 @@ class CollectedHeap : public CHeapObj {
   // Raw memory allocation facilities
   // The obj and array allocate methods are covers for these methods.
   // The permanent allocation method should default to mem_allocate if
-  // permanent memory isn't supported.
+  // permanent memory isn't supported. mem_allocate() should never be
+  // called to allocate TLABs, only individual objects.
   virtual HeapWord* mem_allocate(size_t size,
-                                 bool is_noref,
-                                 bool is_tlab,
                                  bool* gc_overhead_limit_was_exceeded) = 0;
   virtual HeapWord* permanent_mem_allocate(size_t size) = 0;
 
-  // The boundary between a "large" and "small" array of primitives, in words.
-  virtual size_t large_typearray_limit() = 0;
-
   // Utilities for turning raw memory into filler objects.
   //
   // min_fill_size() is the smallest region that can be filled.

src/share/vm/gc_interface/collectedHeap.inline.hpp

@@ -122,7 +122,7 @@ void CollectedHeap::post_allocation_setup_array(KlassHandle klass,
   post_allocation_notify(klass, (oop)obj);
 }
 
-HeapWord* CollectedHeap::common_mem_allocate_noinit(size_t size, bool is_noref, TRAPS) {
+HeapWord* CollectedHeap::common_mem_allocate_noinit(size_t size, TRAPS) {
 
   // Clear unhandled oops for memory allocation.  Memory allocation might
   // not take out a lock if from tlab, so clear here.
@@ -133,7 +133,6 @@ HeapWord* CollectedHeap::common_mem_allocate_noinit(size_t size, bool is_noref,
     return NULL;  // caller does a CHECK_0 too
   }
 
-  // We may want to update this, is_noref objects might not be allocated in TLABs.
   HeapWord* result = NULL;
   if (UseTLAB) {
     result = CollectedHeap::allocate_from_tlab(THREAD, size);
@@ -145,8 +144,6 @@ HeapWord* CollectedHeap::common_mem_allocate_noinit(size_t size, bool is_noref,
   }
   bool gc_overhead_limit_was_exceeded = false;
   result = Universe::heap()->mem_allocate(size,
-                                          is_noref,
-                                          false,
                                           &gc_overhead_limit_was_exceeded);
   if (result != NULL) {
     NOT_PRODUCT(Universe::heap()->
@@ -183,8 +180,8 @@ HeapWord* CollectedHeap::common_mem_allocate_noinit(size_t size, bool is_noref,
   }
 }
 
-HeapWord* CollectedHeap::common_mem_allocate_init(size_t size, bool is_noref, TRAPS) {
-  HeapWord* obj = common_mem_allocate_noinit(size, is_noref, CHECK_NULL);
+HeapWord* CollectedHeap::common_mem_allocate_init(size_t size, TRAPS) {
+  HeapWord* obj = common_mem_allocate_noinit(size, CHECK_NULL);
   init_obj(obj, size);
   return obj;
 }
@@ -255,7 +252,7 @@ oop CollectedHeap::obj_allocate(KlassHandle klass, int size, TRAPS) {
   debug_only(check_for_valid_allocation_state());
   assert(!Universe::heap()->is_gc_active(), "Allocation during gc not allowed");
   assert(size >= 0, "int won't convert to size_t");
-  HeapWord* obj = common_mem_allocate_init(size, false, CHECK_NULL);
+  HeapWord* obj = common_mem_allocate_init(size, CHECK_NULL);
   post_allocation_setup_obj(klass, obj, size);
   NOT_PRODUCT(Universe::heap()->check_for_bad_heap_word_value(obj, size));
   return (oop)obj;
@@ -268,20 +265,7 @@ oop CollectedHeap::array_allocate(KlassHandle klass,
   debug_only(check_for_valid_allocation_state());
   assert(!Universe::heap()->is_gc_active(), "Allocation during gc not allowed");
   assert(size >= 0, "int won't convert to size_t");
-  HeapWord* obj = common_mem_allocate_init(size, false, CHECK_NULL);
-  post_allocation_setup_array(klass, obj, size, length);
-  NOT_PRODUCT(Universe::heap()->check_for_bad_heap_word_value(obj, size));
-  return (oop)obj;
-}
-
-oop CollectedHeap::large_typearray_allocate(KlassHandle klass,
-                                            int size,
-                                            int length,
-                                            TRAPS) {
-  debug_only(check_for_valid_allocation_state());
-  assert(!Universe::heap()->is_gc_active(), "Allocation during gc not allowed");
-  assert(size >= 0, "int won't convert to size_t");
-  HeapWord* obj = common_mem_allocate_init(size, true, CHECK_NULL);
+  HeapWord* obj = common_mem_allocate_init(size, CHECK_NULL);
   post_allocation_setup_array(klass, obj, size, length);
   NOT_PRODUCT(Universe::heap()->check_for_bad_heap_word_value(obj, size));
   return (oop)obj;

src/share/vm/memory/collectorPolicy.cpp

@@ -750,10 +750,6 @@ HeapWord* GenCollectorPolicy::satisfy_failed_allocation(size_t size,
   return NULL;
 }
 
-size_t GenCollectorPolicy::large_typearray_limit() {
-  return FastAllocateSizeLimit;
-}
-
 // Return true if any of the following is true:
 // . the allocation won't fit into the current young gen heap
 // . gc locker is occupied (jni critical section)

src/share/vm/memory/collectorPolicy.hpp

 /*
- * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -280,9 +280,6 @@ class GenCollectorPolicy : public CollectorPolicy {
 
   HeapWord *satisfy_failed_allocation(size_t size, bool is_tlab);
 
-  // The size that defines a "large array".
-  virtual size_t large_typearray_limit();
-
   // Adaptive size policy
   virtual void initialize_size_policy(size_t init_eden_size,
                                       size_t init_promo_size,

src/share/vm/memory/genCollectedHeap.cpp

@@ -434,11 +434,9 @@ HeapWord* GenCollectedHeap::attempt_allocation(size_t size,
 }
 
 HeapWord* GenCollectedHeap::mem_allocate(size_t size,
-                                         bool is_large_noref,
-                                         bool is_tlab,
                                          bool* gc_overhead_limit_was_exceeded) {
   return collector_policy()->mem_allocate_work(size,
-                                               is_tlab,
+                                               false /* is_tlab */,
                                                gc_overhead_limit_was_exceeded);
 }
 
@@ -1120,11 +1118,9 @@ size_t GenCollectedHeap::unsafe_max_tlab_alloc(Thread* thr) const {
 
 HeapWord* GenCollectedHeap::allocate_new_tlab(size_t size) {
   bool gc_overhead_limit_was_exceeded;
-  HeapWord* result = mem_allocate(size   /* size */,
-                                  false  /* is_large_noref */,
-                                  true   /* is_tlab */,
-                                  &gc_overhead_limit_was_exceeded);
-  return result;
+  return collector_policy()->mem_allocate_work(size /* size */,
+                                               true /* is_tlab */,
+                                               &gc_overhead_limit_was_exceeded);
 }
 
 // Requires "*prev_ptr" to be non-NULL.  Deletes and a block of minimal size
@@ -1179,10 +1175,6 @@ void GenCollectedHeap::release_scratch() {
   }
 }
 
-size_t GenCollectedHeap::large_typearray_limit() {
-  return gen_policy()->large_typearray_limit();
-}
-
 class GenPrepareForVerifyClosure: public GenCollectedHeap::GenClosure {
   void do_generation(Generation* gen) {
     gen->prepare_for_verify();

src/share/vm/memory/genCollectedHeap.hpp

 /*
- * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -161,8 +161,6 @@ public:
   size_t max_capacity() const;
 
   HeapWord* mem_allocate(size_t size,
-                         bool   is_large_noref,
-                         bool   is_tlab,
                          bool*  gc_overhead_limit_was_exceeded);
 
   // We may support a shared contiguous allocation area, if the youngest
@@ -315,8 +313,6 @@ public:
   // contributed as it needs.
   void release_scratch();
 
-  size_t large_typearray_limit();
-
   // Ensure parsability: override
   virtual void ensure_parsability(bool retire_tlabs);
 

src/share/vm/oops/typeArrayKlass.cpp

@@ -84,11 +84,7 @@ typeArrayOop typeArrayKlass::allocate(int length, TRAPS) {
       KlassHandle h_k(THREAD, as_klassOop());
       typeArrayOop t;
       CollectedHeap* ch = Universe::heap();
-      if (size < ch->large_typearray_limit()) {
-        t = (typeArrayOop)CollectedHeap::array_allocate(h_k, (int)size, length, CHECK_NULL);
-      } else {
-        t = (typeArrayOop)CollectedHeap::large_typearray_allocate(h_k, (int)size, length, CHECK_NULL);
-      }
+      t = (typeArrayOop)CollectedHeap::array_allocate(h_k, (int)size, length, CHECK_NULL);
       assert(t->is_parsable(), "Don't publish unless parsable");
       return t;
     } else {