Short term JSON eval cache

src/runtime.cc

 // Copyright 2012 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 13082 matching lines @@
   return Smi::FromInt(message->start_position());
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_MessageGetScript) {
   CONVERT_ARG_CHECKED(JSMessageObject, message, 0);
   return message->script();
 }
 
 
+RUNTIME_FUNCTION(MaybeObject*,
+                 Runtime_GetShortTermEvalCompilationCacheStatistics) {
+  if (!FLAG_json_eval_cache) return isolate->heap()->undefined_value();
+  HandleScope scope(isolate);
+
+  const int kValueCount = 4;
+  const char* keys[kValueCount] = { "entryCount",
+                                    "maxEntries",
+                                    "totalSize",
+                                    "maxTotalSize" };
+  int values[kValueCount];
+  isolate->compilation_cache()->GetShortTermEvalStatistics(&values[0],
+                                                           &values[1],
+                                                           &values[2],
+                                                           &values[3]);
+
+  Handle<JSObject> result =
+    isolate->factory()->NewJSObject(isolate->object_function());
+  PropertyAttributes attribs = NONE;
+
+  for (int i = 0; i < kValueCount; i++) {
+    Handle<String> key =
+        isolate->factory()->LookupAsciiSymbol(CStrVector(keys[i]));
+    Handle<Object> value(Smi::FromInt(values[i]));
+    RETURN_IF_EMPTY_HANDLE(isolate,
+        SetProperty(result, key, value, attribs, kStrictMode));
+  }
+
+  return *result;
+}
+
+
+RUNTIME_FUNCTION(MaybeObject*, Runtime_ClearShortTermCompilationCache) {
+  bool result = isolate->compilation_cache()->ClearShortTerm();
+  return result
+      ? isolate->heap()->true_value()
+      : isolate->heap()->false_value();
+}
+
+
 #ifdef DEBUG
 // ListNatives is ONLY used by the fuzz-natives.js in debug mode
 // Exclude the code in release mode.
 RUNTIME_FUNCTION(MaybeObject*, Runtime_ListNatives) {
   ASSERT(args.length() == 0);
   HandleScope scope;
 #define COUNT_ENTRY(Name, argc, ressize) + 1
   int entry_count = 0
       RUNTIME_FUNCTION_LIST(COUNT_ENTRY)
       INLINE_FUNCTION_LIST(COUNT_ENTRY)
@@ skipping 166 matching lines @@
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags,
                                        "Runtime::PerformGC");
   }
 }
 
 
 } }  // namespace v8::internal