JIT precompilated snapshots.

runtime/vm/snapshot.h

 // 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.
 
 #ifndef VM_SNAPSHOT_H_
 #define VM_SNAPSHOT_H_
 
 #include "platform/assert.h"
 #include "vm/allocation.h"
 #include "vm/bitfield.h"
@@ skipping 143 matching lines @@
     kCore = 0,    // Full snapshot of core libraries. No root library, no code.
     kAppWithJIT,  // Full snapshot of core libraries and application. Has some
                   // code, but may compile in the future because we haven't
                   // necessarily included code for every function or to
                   // (de)optimize.
     kAppNoJIT,    // Full snapshot of core libraries and application. Has
                   // complete code for the application that never deopts. Will
                   // not compile in the future.
     kScript,      // A partial snapshot of only the application script.
     kMessage,     // A partial snapshot used only for isolate messaging.
+    kNone,        // dart_bootstrap/gen_snapshot
+    kInvalid
   };
 
   static const int kHeaderSize = 2 * sizeof(int64_t);
   static const int kLengthIndex = 0;
   static const int kSnapshotFlagIndex = 1;
 
   static const Snapshot* SetupFromBuffer(const void* raw_memory);
 
   // Getters.
   const uint8_t* content() const { OPEN_ARRAY_START(uint8_t, uint8_t); }
@@ skipping 738 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(InstructionsWriter);
 };
 
 
 class AssemblyInstructionsWriter : public InstructionsWriter {
  public:
   AssemblyInstructionsWriter(uint8_t** assembly_buffer,
                              ReAlloc alloc,
                              intptr_t initial_size)
     : InstructionsWriter(),
-      assembly_stream_(assembly_buffer, alloc, initial_size) {
+      assembly_stream_(assembly_buffer, alloc, initial_size),
+      binary_size_(0) {
   }
 
   virtual void Write();
   virtual intptr_t binary_size() { return binary_size_; }
 
   intptr_t AssemblySize() const { return assembly_stream_.bytes_written(); }
 
  private:
   void WriteWordLiteral(uword value) {
     // Padding is helpful for comparing the .S with --disassemble.
@@ skipping 239 matching lines @@
   ForwardList* forward_list_;
   InstructionsWriter* instructions_writer_;
   Array& scripts_;
   Array& symbol_table_;
   bool vm_isolate_is_symbolic_;
 
   DISALLOW_COPY_AND_ASSIGN(FullSnapshotWriter);
 };
 
 
-class PrecompiledSnapshotWriter : public FullSnapshotWriter {
- public:
-  PrecompiledSnapshotWriter(uint8_t** vm_isolate_snapshot_buffer,
-                            uint8_t** isolate_snapshot_buffer,
-                            ReAlloc alloc,
-                            InstructionsWriter* instructions_writer);
-  ~PrecompiledSnapshotWriter();
-};
-
-
 class ScriptSnapshotWriter : public SnapshotWriter {
  public:
   static const intptr_t kInitialSize = 64 * KB;
   ScriptSnapshotWriter(uint8_t** buffer, ReAlloc alloc);
   ~ScriptSnapshotWriter() { }
 
   // Writes a partial snapshot of the script.
   void WriteScriptSnapshot(const Library& lib);
 
  private:
@@ skipping 32 matching lines @@
  private:
   SnapshotWriter* writer_;
   bool as_references_;
 
   DISALLOW_COPY_AND_ASSIGN(SnapshotWriterVisitor);
 };
 
 }  // namespace dart
 
 #endif  // VM_SNAPSHOT_H_