Limit the generation of regexp code with large inlined constants.

src/jsregexp.cc

 // Copyright 2006-2009 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 840 matching lines @@
   accept_ = new EndNode(EndNode::ACCEPT);
   ASSERT(next_register_ - 1 <= RegExpMacroAssembler::kMaxRegister);
 }
 
 
 RegExpEngine::CompilationResult RegExpCompiler::Assemble(
     RegExpMacroAssembler* macro_assembler,
     RegExpNode* start,
     int capture_count,
     Handle<String> pattern) {
+  Heap* heap = pattern->GetHeap();
+
+  bool use_slow_safe_regexp_compiler = false;
+  if (heap->total_regexp_code_generated() >
+          RegExpImpl::kRegWxpCompiledLimit &&
+      heap->isolate()->memory_allocator()->SizeExecutable() >
+          RegExpImpl::kRegExpExecutableMemoryLimit) {
+    use_slow_safe_regexp_compiler = true;
+  }
+
+  macro_assembler->set_slow_safe(use_slow_safe_regexp_compiler);
+
 #ifdef DEBUG
   if (FLAG_trace_regexp_assembler)
     macro_assembler_ = new RegExpMacroAssemblerTracer(macro_assembler);
   else
 #endif
     macro_assembler_ = macro_assembler;
+
   List <RegExpNode*> work_list(0);
   work_list_ = &work_list;
   Label fail;
   macro_assembler_->PushBacktrack(&fail);
   Trace new_trace;
   start->Emit(this, &new_trace);
   macro_assembler_->Bind(&fail);
   macro_assembler_->Fail();
   while (!work_list.is_empty()) {
     work_list.RemoveLast()->Emit(this, &new_trace);
   }
   if (reg_exp_too_big_) return IrregexpRegExpTooBig();
 
-  Handle<Object> code = macro_assembler_->GetCode(pattern);
+  Handle<HeapObject> code = macro_assembler_->GetCode(pattern);
+  heap->IncreaseTotalRegexpCodeGenerated(code->Size());
   work_list_ = NULL;
 #ifdef DEBUG
   if (FLAG_print_code) {
     Handle<Code>::cast(code)->Disassemble(*pattern->ToCString());
   }
   if (FLAG_trace_regexp_assembler) {
     delete macro_assembler_;
   }
 #endif
   return RegExpEngine::CompilationResult(*code, next_register_);
@@ skipping 4471 matching lines @@
   }
 
   return compiler.Assemble(&macro_assembler,
                            node,
                            data->capture_count,
                            pattern);
 }
 
 
 }}  // namespace v8::internal