VM: Precompiled rodata snapshot.

runtime/bin/main.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
 #include "include/dart_api.h"
 #include "include/dart_tools_api.h"
@@ skipping 81 matching lines @@
 // same process.
 // Always set this with dart_noopt.
 #if defined(DART_PRECOMPILER) && !defined(DART_NO_SNAPSHOT)
 static const bool is_noopt = true;
 #else
 static const bool is_noopt = false;
 #endif
 
 
 extern const char* kPrecompiledLibraryName;
-extern const char* kPrecompiledSymbolName;
+extern const char* kPrecompiledInstructionsSymbolName;
+extern const char* kPrecompiledDataSymbolName;
 static const char* kPrecompiledVmIsolateName = "precompiled.vmisolate";
 static const char* kPrecompiledIsolateName = "precompiled.isolate";
 static const char* kPrecompiledInstructionsName = "precompiled.S";
 static const char* kVMIsolateSuffix = "vmisolate";
 static const char* kIsolateSuffix = "isolate";
 
 // Global flag that is used to indicate that we want to trace resolution of
 // URIs and the loading of libraries, parts and scripts.
 static bool trace_loading = false;
 
@@ skipping 1452 matching lines @@
   vm_options.AddArgument("--precompilation");
 #endif
 
   Dart_SetVMFlags(vm_options.count(), vm_options.arguments());
 
   // Start event handler.
   TimerUtils::InitOnce();
   EventHandler::Start();
 
   const uint8_t* instructions_snapshot = NULL;
+  const uint8_t* data_snapshot = NULL;
   if (run_precompiled_snapshot) {
     instructions_snapshot = reinterpret_cast<const uint8_t*>(
-        LoadLibrarySymbol(kPrecompiledLibraryName, kPrecompiledSymbolName));
+        LoadLibrarySymbol(kPrecompiledLibraryName,
+                          kPrecompiledInstructionsSymbolName));
+    data_snapshot = reinterpret_cast<const uint8_t*>(
+        LoadLibrarySymbol(kPrecompiledLibraryName,
+                          kPrecompiledDataSymbolName));
     ReadSnapshotFile(precompiled_snapshot_directory,
                      kPrecompiledVmIsolateName,
                      &vm_isolate_snapshot_buffer);
     ReadSnapshotFile(precompiled_snapshot_directory,
                      kPrecompiledIsolateName,
                      &isolate_snapshot_buffer);
+
   } else if (run_full_snapshot) {
     char* vm_snapshot_fname;
     char* isolate_snapshot_fname;
 
     // Compute file names.
     ComputeSnapshotFilenames(snapshot_filename,
                              &vm_snapshot_fname,
                              &isolate_snapshot_fname);
 
     ReadSnapshotFile(NULL, vm_snapshot_fname, &vm_isolate_snapshot_buffer);
     ReadSnapshotFile(NULL, isolate_snapshot_fname, &isolate_snapshot_buffer);
     delete vm_snapshot_fname;
     delete isolate_snapshot_fname;
   }
 
   // Initialize the Dart VM.
   char* error = Dart_Initialize(
-      vm_isolate_snapshot_buffer, instructions_snapshot,
+      vm_isolate_snapshot_buffer, instructions_snapshot, data_snapshot,
       CreateIsolateAndSetup, NULL, NULL, ShutdownIsolate,
       DartUtils::OpenFile,
       DartUtils::ReadFile,
       DartUtils::WriteFile,
       DartUtils::CloseFile,
       DartUtils::EntropySource,
       GetVMServiceAssetsArchiveCallback);
   if (error != NULL) {
     if (do_vm_shutdown) {
       EventHandler::Stop();
@@ skipping 45 matching lines @@
   Platform::Exit(Process::GlobalExitCode());
 }
 
 }  // namespace bin
 }  // namespace dart
 
 int main(int argc, char** argv) {
   dart::bin::main(argc, argv);
   UNREACHABLE();
 }