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-inl.h" 10 #include "src/snapshot/serialize.h" // for SerializerDeserializer::nop() 11 12 13 namespace v8 { 14 namespace internal { 15 16 void SnapshotByteSource::CopyRaw(byte* to, int number_of_bytes) { 17 memcpy(to, data_ + position_, number_of_bytes); 18 position_ += number_of_bytes; 19 } 20 21 22 void SnapshotByteSink::PutInt(uintptr_t integer, const char* description) { 23 DCHECK(integer < 1 << 30); 24 integer <<= 2; 25 int bytes = 1; 26 if (integer > 0xff) bytes = 2; 27 if (integer > 0xffff) bytes = 3; 28 if (integer > 0xffffff) bytes = 4; 29 integer |= (bytes - 1); 30 Put(static_cast<int>(integer & 0xff), "IntPart1"); 31 if (bytes > 1) Put(static_cast<int>((integer >> 8) & 0xff), "IntPart2"); 32 if (bytes > 2) Put(static_cast<int>((integer >> 16) & 0xff), "IntPart3"); 33 if (bytes > 3) Put(static_cast<int>((integer >> 24) & 0xff), "IntPart4"); 34 } 35 36 37 void SnapshotByteSink::PutRaw(const byte* data, int number_of_bytes, 38 const char* description) { 39 data_.AddAll(Vector<byte>(const_cast<byte*>(data), number_of_bytes)); 40 } 41 42 43 int SnapshotByteSource::GetBlob(const byte** data) { 44 int size = GetInt(); 45 CHECK(position_ + size <= length_); 46 *data = &data_[position_]; 47 Advance(size); 48 return size; 49 } 50 } // namespace internal 51 } // namespace v8 52
