First step towards splitting a full snapshot into a vm isolate snapshot and a

runtime/vm/dart_api_impl.cc

 // Copyright (c) 2013, 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 "include/dart_api.h"
 #include "include/dart_mirrors_api.h"
 #include "include/dart_native_api.h"
 
 #include "platform/assert.h"
 #include "vm/class_finalizer.h"
@@ skipping 1182 matching lines @@
 }
 
 
 // --- Initialization and Globals ---
 
 DART_EXPORT const char* Dart_VersionString() {
   return Version::String();
 }
 
 DART_EXPORT bool Dart_Initialize(
+    const uint8_t* vm_isolate_snapshot,
     Dart_IsolateCreateCallback create,
     Dart_IsolateInterruptCallback interrupt,
     Dart_IsolateUnhandledExceptionCallback unhandled,
     Dart_IsolateShutdownCallback shutdown,
     Dart_FileOpenCallback file_open,
     Dart_FileReadCallback file_read,
     Dart_FileWriteCallback file_write,
     Dart_FileCloseCallback file_close,
     Dart_EntropySource entropy_source) {
-  const char* err_msg = Dart::InitOnce(create, interrupt, unhandled, shutdown,
+  const char* err_msg = Dart::InitOnce(vm_isolate_snapshot,
+                                       create, interrupt, unhandled, shutdown,
                                        file_open, file_read, file_write,
                                        file_close, entropy_source);
   if (err_msg != NULL) {
     OS::PrintErr("Dart_Initialize: %s\n", err_msg);
     return false;
   }
   return true;
 }
 
 
@@ skipping 178 matching lines @@
 
 
 static uint8_t* ApiReallocate(uint8_t* ptr,
                               intptr_t old_size,
                               intptr_t new_size) {
   return Api::TopScope(Isolate::Current())->zone()->Realloc<uint8_t>(
       ptr, old_size, new_size);
 }
 
 
-DART_EXPORT Dart_Handle Dart_CreateSnapshot(uint8_t** buffer,
-                                            intptr_t* size) {
+DART_EXPORT Dart_Handle Dart_CreateSnapshot(
+    uint8_t** vm_isolate_snapshot_buffer,
+    intptr_t* vm_isolate_snapshot_size,
+    uint8_t** isolate_snapshot_buffer,
+    intptr_t* isolate_snapshot_size) {
   Isolate* isolate = Isolate::Current();
   DARTSCOPE(isolate);
   TIMERSCOPE(isolate, time_creating_snapshot);
-  if (buffer == NULL) {
-    RETURN_NULL_ERROR(buffer);
+  if (vm_isolate_snapshot_buffer == NULL) {
+    RETURN_NULL_ERROR(vm_isolate_snapshot_buffer);
   }
-  if (size == NULL) {
-    RETURN_NULL_ERROR(size);
+  if (vm_isolate_snapshot_size == NULL) {
+    RETURN_NULL_ERROR(vm_isolate_snapshot_size);
+  }
+  if (isolate_snapshot_buffer == NULL) {
+    RETURN_NULL_ERROR(isolate_snapshot_buffer);
+  }
+  if (isolate_snapshot_size == NULL) {
+    RETURN_NULL_ERROR(isolate_snapshot_size);
   }
   // Finalize all classes if needed.
   Dart_Handle state = Api::CheckAndFinalizePendingClasses(isolate);
   if (::Dart_IsError(state)) {
     return state;
   }
   // Since this is only a snapshot the root library should not be set.
   isolate->object_store()->set_root_library(Library::Handle(isolate));
-  FullSnapshotWriter writer(buffer, ApiReallocate);
+  FullSnapshotWriter writer(vm_isolate_snapshot_buffer,
+                            isolate_snapshot_buffer,
+                            ApiReallocate);
   writer.WriteFullSnapshot();
-  *size = writer.BytesWritten();
+  *vm_isolate_snapshot_size = writer.VmIsolateSnapshotSize();
+  *isolate_snapshot_size = writer.IsolateSnapshotSize();
   return Api::Success();
 }
 
 
 DART_EXPORT Dart_Handle Dart_CreateScriptSnapshot(uint8_t** buffer,
                                                   intptr_t* size) {
   Isolate* isolate = Isolate::Current();
   DARTSCOPE(isolate);
   TIMERSCOPE(isolate, time_creating_snapshot);
   if (buffer == NULL) {
@@ skipping 4078 matching lines @@
 
 
 DART_EXPORT void Dart_RegisterRootServiceRequestCallback(
     const char* name,
     Dart_ServiceRequestCallback callback,
     void* user_data) {
   Service::RegisterRootEmbedderCallback(name, callback, user_data);
 }
 
 }  // namespace dart