Introducing a kUninitialized constant used for clearing the function cache.

Review URL: http://codereview.chromium.org/17639

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1057 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/apinatives.js

@@ -64,8 +64,7 @@ function InstantiateFunction(data, name) {
   var cache = kApiFunctionCache;
   var serialNumber = %GetTemplateField(data, kApiSerialNumberOffset);
   var isFunctionCached =
-   (serialNumber in cache) &&
-   (cache[serialNumber] != -1);
+   (serialNumber in cache) && (cache[serialNumber] != kUninitialized);
   if (!isFunctionCached) {
     try {
       cache[serialNumber] = null;
@@ -82,7 +81,7 @@ function InstantiateFunction(data, name) {
       }
       ConfigureTemplateInstance(fun, data);
     } catch (e) {
-      cache[serialNumber] = -1;
+      cache[serialNumber] = kUninitialized;
       throw e;
     }
   }

src/macros.py

@@ -61,6 +61,9 @@ const msPerMinute      = 60000;
 const msPerHour        = 3600000;
 const msPerDay         = 86400000;
 
+# For apinatives.js
+const kUninitialized = -1;
+
 # Note: kDayZeroInJulianDay = ToJulianDay(1970, 0, 1).
 const kInvalidDate        = 'Invalid Date';
 const kDayZeroInJulianDay = 2440588;