VM: Precompiled rodata snapshot.

runtime/vm/isolate.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 "vm/isolate.h"
 
 #include "include/dart_api.h"
 #include "include/dart_native_api.h"
 #include "platform/assert.h"
 #include "platform/text_buffer.h"
@@ skipping 956 matching lines @@
   InstructionsSnapshot snapshot(instructions_snapshot_buffer);
 #if defined(DEBUG)
   if (FLAG_trace_isolates) {
     OS::Print("Precompiled instructions are at [0x%" Px ", 0x%" Px ")\n",
               reinterpret_cast<uword>(snapshot.instructions_start()),
               reinterpret_cast<uword>(snapshot.instructions_start()) +
               snapshot.instructions_size());
   }
 #endif
   heap_->SetupInstructionsSnapshotPage(snapshot.instructions_start(),
-                                       snapshot.instructions_size());
+                                       snapshot.instructions_size(),
+                                       /* is_executable = */ true);
 }
 
 
+void Isolate::SetupDataSnapshotPage(const uint8_t* data_snapshot_buffer) {
+  DataSnapshot snapshot(data_snapshot_buffer);
+#if defined(DEBUG)
+  if (FLAG_trace_isolates) {
+    OS::Print("Precompiled rodata are at [0x%" Px ", 0x%" Px ")\n",
+              reinterpret_cast<uword>(snapshot.data_start()),
+              reinterpret_cast<uword>(snapshot.data_start()) +
+              snapshot.data_size());
+  }
+#endif
+  heap_->SetupInstructionsSnapshotPage(snapshot.data_start(),
+                                       snapshot.data_size(),
+                                       /* is_executable = */ false);
+}
+
+
+
 void Isolate::set_debugger_name(const char* name) {
   free(debugger_name_);
   debugger_name_ = strdup(name);
 }
 
 
 void Isolate::BuildName(const char* name_prefix) {
   ASSERT(name_ == NULL);
   if (name_prefix == NULL) {
     name_prefix = "isolate";
@@ skipping 1562 matching lines @@
 void IsolateSpawnState::DecrementSpawnCount() {
   ASSERT(spawn_count_monitor_ != NULL);
   ASSERT(spawn_count_ != NULL);
   MonitorLocker ml(spawn_count_monitor_);
   ASSERT(*spawn_count_ > 0);
   *spawn_count_ = *spawn_count_ - 1;
   ml.Notify();
 }
 
 }  // namespace dart