Add support for startup data (snapshot) compression.

include/v8.h

 // Copyright 2011 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 2623 matching lines @@
 
   Isolate();
   Isolate(const Isolate&);
   ~Isolate();
   Isolate& operator=(const Isolate&);
   void* operator new(size_t size);
   void operator delete(void*, size_t);
 };
 
 
+class StartupData {
+ public:
+  int id;

[Søren Thygesen Gjesse, 2011/04/29 06:50:29]

Is this id actually required?

[mnaganov (inactive), 2011/04/29 12:07:58]

I think, no. As we don't expose to embedder what those ids mean, they make no
sense.

+  const char* data;
+  int compressed_size;
+  int decompressed_size;

[Søren Thygesen Gjesse, 2011/04/29 06:50:29]

Should the compression algorithm be exposed here (enum or string)?

[mnaganov (inactive), 2011/04/29 12:07:58]

Makes sense. But not for every resource, as it is the same for all of them. I've
added another API function for returning it.

+};
+
+
 /**
  * Container class for static utility functions.
  */
 class V8EXPORT V8 {
  public:
   /** Set the callback to invoke in case of fatal errors. */
   static void SetFatalErrorHandler(FatalErrorCallback that);
 
   /**
    * Ignore out-of-memory exceptions.
    *
    * V8 running out of memory is treated as a fatal error by default.
    * This means that the fatal error handler is called and that V8 is
    * terminated.
    *
    * IgnoreOutOfMemoryException can be used to not treat a
    * out-of-memory situation as a fatal error.  This way, the contexts
    * that did not cause the out of memory problem might be able to
    * continue execution.
    */
   static void IgnoreOutOfMemoryException();
 
   /**
    * Check if V8 is dead and therefore unusable.  This is the case after
    * fatal errors such as out-of-memory situations.
    */
   static bool IsDead();
 
   /**
+   * The following 3 functions are to be used when V8 is built with

[Søren Thygesen Gjesse, 2011/04/29 06:50:29]

with -> with the

[mnaganov (inactive), 2011/04/29 12:07:58]

Done.

+   * 'compress_startup_data' flag enabled. In this case, the embedder
+   * must decompress startup data prior to initializing V8.
+   *
+   * This is how interaction with V8 should look like:
+   *   int compressed_data_count = v8::V8::GetCompressedStartupDataCount();
+   *   v8::StartupData* compressed_data =
+   *     new v8::StartupData[compressed_data_count];
+   *   v8::V8::GetCompressedStartupData(compressed_data);
+   *   ... decompress data (compressed_data can be updated in-place) ...
+   *   v8::V8::SetDecompressedStartupData(compressed_data);
+   *   ... now V8 can be initialized
+   *   ... make sure the decompressed data stays valid until V8 shutdown
+   */
+  static int GetCompressedStartupDataCount();
+  static void GetCompressedStartupData(StartupData* compressed_data);
+  static void SetDecompressedStartupData(StartupData* decompressed_data);
+
+  /**
    * Adds a message listener.
    *
    * The same message listener can be added more than once and it that
    * case it will be called more than once for each message.
    */
   static bool AddMessageListener(MessageCallback that,
                                  Handle<Value> data = Handle<Value>());
 
   /**
    * Remove all message listeners from the specified callback function.
@@ skipping 1310 matching lines @@
 
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_