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