RegExp stack and zone limits.

src/zone.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 43 matching lines @@
 
 class Zone {
  public:
   // Allocate 'size' bytes of memory in the Zone; expands the Zone by
   // allocating new segments of memory on demand using malloc().
   static inline void* New(int size);
 
   // Delete all objects and free all memory allocated in the Zone.
   static void DeleteAll();
 
+  // Returns true if more memory has been allocated in zones than
+  // the limit allows.
+  static inline bool excess_allocation();
+
  private:
+  friend class Segment;
+
   // All pointers returned from New() have this alignment.
   static const int kAlignment = kPointerSize;
 
   // Never allocate segments smaller than this size in bytes.
   static const int kMinimumSegmentSize = 8 * KB;
 
   // Never keep segments larger than this size in bytes around.
   static const int kMaximumKeptSegmentSize = 64 * KB;
 
+  // Report zone excess when allocation exceeds this limit.
+  static int zone_excess_limit_;
+
+  // The number of bytes allocated in segments.  Note that this number
+  // includes memory allocated from the OS but not yet allocated from
+  // the zone.
+  static int segment_bytes_allocated_;
 
   // The Zone is intentionally a singleton; you should not try to
   // allocate instances of the class.
   Zone() { UNREACHABLE(); }
 
 
   // Expand the Zone to hold at least 'size' more bytes and allocate
   // the bytes. Returns the address of the newly allocated chunk of
   // memory in the Zone. Should only be called if there isn't enough
   // room in the Zone already.
@@ skipping 88 matching lines @@
 
  private:
   ZoneScopeMode mode_;
   static int nesting_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ZONE_H_