Force growth when retrying an old-space allocation.

runtime/vm/pages.h

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_PAGES_H_
 #define VM_PAGES_H_
 
 #include "vm/freelist.h"
 #include "vm/globals.h"
 #include "vm/virtual_memory.h"
@@ skipping 133 matching lines @@
   DISALLOW_IMPLICIT_CONSTRUCTORS(PageSpaceController);
 };
 
 
 class PageSpace {
  public:
   // TODO(iposva): Determine heap sizes and tune the page size accordingly.
   static const intptr_t kPageSize = 256 * KB;
   static const intptr_t kPageAlignment = kPageSize;
 
+  enum GrowthPolicy {
+    kControlGrowth,
+    kForceGrowth
+  };
+
   PageSpace(Heap* heap, intptr_t max_capacity, bool is_executable = false);
   ~PageSpace();
 
   uword TryAllocate(intptr_t size);
+  uword TryAllocate(intptr_t size, GrowthPolicy growth_policy);
 
   intptr_t in_use() const { return in_use_; }
   intptr_t capacity() const { return capacity_; }
 
   bool Contains(uword addr) const;
   bool IsValidAddress(uword addr) const {
     return Contains(addr);
   }
   static bool IsPageAllocatableSize(intptr_t size) {
     return size <= kAllocatablePageSize;
@@ skipping 62 matching lines @@
   bool sweeping_;
 
   PageSpaceController page_space_controller_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(PageSpace);
 };
 
 }  // namespace dart
 
 #endif  // VM_PAGES_H_