1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5
6 #include "src/snapshot/snapshot-source-sink.h"
7
8 #include "src/base/logging.h"
9 #include "src/handles/handles-inl.h"
10 #include "src/objects/objects-inl.h"
11
12 namespace v8 {
13 namespace internal {
14
PutInt(uintptr_t integer,const char * description)15 void SnapshotByteSink::PutInt(uintptr_t integer, const char* description) {
16 DCHECK_LT(integer, 1 << 30);
17 integer <<= 2;
18 int bytes = 1;
19 if (integer > 0xFF) bytes = 2;
20 if (integer > 0xFFFF) bytes = 3;
21 if (integer > 0xFFFFFF) bytes = 4;
22 integer |= (bytes - 1);
23 Put(static_cast<byte>(integer & 0xFF), "IntPart1");
24 if (bytes > 1) Put(static_cast<byte>((integer >> 8) & 0xFF), "IntPart2");
25 if (bytes > 2) Put(static_cast<byte>((integer >> 16) & 0xFF), "IntPart3");
26 if (bytes > 3) Put(static_cast<byte>((integer >> 24) & 0xFF), "IntPart4");
27 }
28
PutRaw(const byte * data,int number_of_bytes,const char * description)29 void SnapshotByteSink::PutRaw(const byte* data, int number_of_bytes,
30 const char* description) {
31 data_.insert(data_.end(), data, data + number_of_bytes);
32 }
33
Append(const SnapshotByteSink & other)34 void SnapshotByteSink::Append(const SnapshotByteSink& other) {
35 data_.insert(data_.end(), other.data_.begin(), other.data_.end());
36 }
37
GetBlob(const byte ** data)38 int SnapshotByteSource::GetBlob(const byte** data) {
39 int size = GetInt();
40 CHECK(position_ + size <= length_);
41 *data = &data_[position_];
42 Advance(size);
43 return size;
44 }
45 } // namespace internal
46 } // namespace v8
47