Add support for startup data (snapshot) compression.

src/api.cc

 // 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 293 matching lines @@
   i::Isolate* isolate = i::Isolate::UncheckedCurrent();
   if (isolate != NULL)
     return isolate;
 
   i::Isolate::EnterDefaultIsolate();
   isolate = i::Isolate::Current();
   return isolate;
 }
 
 
+enum CompressedStartupDataItems {
+  kSnapshot = 0,
+  kSnapshotContext,
+  kCompressedStartupDataCount
+};
+
+int V8::GetCompressedStartupDataCount() {
+#ifdef COMPRESS_STARTUP_DATA_BZ2
+  return kCompressedStartupDataCount;
+#else
+  return 0;
+#endif
+}
+
+
+void V8::GetCompressedStartupData(StartupData* compressed_data) {
+#ifdef COMPRESS_STARTUP_DATA_BZ2
+  compressed_data->id = kSnapshot;
+  compressed_data->data = reinterpret_cast<const char*>(i::Snapshot::data());
+  compressed_data->compressed_size = i::Snapshot::size();
+  compressed_data->decompressed_size = i::Snapshot::decompressed_size();
+
+  ++compressed_data;
+  compressed_data->id = kSnapshotContext;
+  compressed_data->data =
+      reinterpret_cast<const char*>(i::Snapshot::context_data());
+  compressed_data->compressed_size = i::Snapshot::context_size();
+  compressed_data->decompressed_size = i::Snapshot::context_decompressed_size();
+#endif
+}
+
+
+void V8::SetDecompressedStartupData(StartupData* decompressed_data) {
+#ifdef COMPRESS_STARTUP_DATA_BZ2
+  for (int i = 0;
+       i < GetCompressedStartupDataCount();
+       ++i, ++decompressed_data) {
+    switch (decompressed_data->id) {
+      case kSnapshot:
+        ASSERT(i::Snapshot::decompressed_size() ==
+               decompressed_data->decompressed_size);
+        i::Snapshot::set_decompressed_data(
+            reinterpret_cast<const i::byte*>(decompressed_data->data));
+        break;
+      case kSnapshotContext:
+        ASSERT(i::Snapshot::context_decompressed_size() ==
+               decompressed_data->decompressed_size);
+        i::Snapshot::set_context_decompressed_data(
+            reinterpret_cast<const i::byte*>(decompressed_data->data));
+        break;
+      default:
+        UNREACHABLE();
+    }
+  }
+#endif
+}
+
+
 void V8::SetFatalErrorHandler(FatalErrorCallback that) {
   i::Isolate* isolate = EnterIsolateIfNeeded();
   isolate->set_exception_behavior(that);
 }
 
 
 #ifdef DEBUG
 void ImplementationUtilities::ZapHandleRange(i::Object** begin,
                                              i::Object** end) {
   i::HandleScope::ZapRange(begin, end);
@@ skipping 5361 matching lines @@
 
 
 char* HandleScopeImplementer::Iterate(ObjectVisitor* v, char* storage) {
   HandleScopeImplementer* scope_implementer =
       reinterpret_cast<HandleScopeImplementer*>(storage);
   scope_implementer->IterateThis(v);
   return storage + ArchiveSpacePerThread();
 }
 
 } }  // namespace v8::internal