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27
28#include "isolate.h"
29
30#ifndef V8_SNAPSHOT_H_
31#define V8_SNAPSHOT_H_
32
33namespace v8 {
34namespace internal {
35
36class Snapshot {
37 public:
38  // Initialize the VM from the given snapshot file. If snapshot_file is
39  // NULL, use the internal snapshot instead. Returns false if no snapshot
40  // could be found.
41  static bool Initialize(const char* snapshot_file = NULL);
42
43  // Create a new context using the internal partial snapshot.
44  static Handle<Context> NewContextFromSnapshot();
45
46  // Returns whether or not the snapshot is enabled.
47  static bool IsEnabled() { return size_ != 0; }
48
49  // Write snapshot to the given file. Returns true if snapshot was written
50  // successfully.
51  static bool WriteToFile(const char* snapshot_file);
52
53  static const byte* data() { return data_; }
54  static int size() { return size_; }
55  static int raw_size() { return raw_size_; }
56  static void set_raw_data(const byte* raw_data) {
57    raw_data_ = raw_data;
58  }
59  static const byte* context_data() { return context_data_; }
60  static int context_size() { return context_size_; }
61  static int context_raw_size() { return context_raw_size_; }
62  static void set_context_raw_data(
63      const byte* context_raw_data) {
64    context_raw_data_ = context_raw_data;
65  }
66
67 private:
68  static const byte data_[];
69  static const byte* raw_data_;
70  static const byte context_data_[];
71  static const byte* context_raw_data_;
72  static const int new_space_used_;
73  static const int pointer_space_used_;
74  static const int data_space_used_;
75  static const int code_space_used_;
76  static const int map_space_used_;
77  static const int cell_space_used_;
78  static const int large_space_used_;
79  static const int size_;
80  static const int raw_size_;
81  static const int context_size_;
82  static const int context_raw_size_;
83
84  static bool Deserialize(const byte* content, int len);
85
86  DISALLOW_IMPLICIT_CONSTRUCTORS(Snapshot);
87};
88
89} }  // namespace v8::internal
90
91#endif  // V8_SNAPSHOT_H_
92