d07a2eb806
This way we don't clash with the ASSERT* macros defined by GoogleTest, and we are one step closer to being able to replace our homegrown base/ with base/ from Chrome. R=jochen@chromium.org, svenpanne@chromium.org Review URL: https://codereview.chromium.org/430503007 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22812 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
102 lines
2.7 KiB
C++
102 lines
2.7 KiB
C++
// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/snapshot-source-sink.h"
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#include "src/base/logging.h"
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#include "src/handles-inl.h"
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#include "src/serialize.h" // for SerializerDeserializer::nop() in AtEOF()
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namespace v8 {
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namespace internal {
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SnapshotByteSource::SnapshotByteSource(const byte* array, int length)
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: data_(array), length_(length), position_(0) {
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}
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SnapshotByteSource::~SnapshotByteSource() { }
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int32_t SnapshotByteSource::GetUnalignedInt() {
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DCHECK(position_ < length_); // Require at least one byte left.
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#if defined(V8_HOST_CAN_READ_UNALIGNED) && __BYTE_ORDER == __LITTLE_ENDIAN
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int32_t answer = *reinterpret_cast<const int32_t*>(data_ + position_);
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#else
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int32_t answer = data_[position_];
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answer |= data_[position_ + 1] << 8;
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answer |= data_[position_ + 2] << 16;
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answer |= data_[position_ + 3] << 24;
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#endif
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return answer;
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}
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void SnapshotByteSource::CopyRaw(byte* to, int number_of_bytes) {
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MemCopy(to, data_ + position_, number_of_bytes);
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position_ += number_of_bytes;
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}
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void SnapshotByteSink::PutInt(uintptr_t integer, const char* description) {
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DCHECK(integer < 1 << 22);
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integer <<= 2;
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int bytes = 1;
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if (integer > 0xff) bytes = 2;
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if (integer > 0xffff) bytes = 3;
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integer |= bytes;
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Put(static_cast<int>(integer & 0xff), "IntPart1");
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if (bytes > 1) Put(static_cast<int>((integer >> 8) & 0xff), "IntPart2");
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if (bytes > 2) Put(static_cast<int>((integer >> 16) & 0xff), "IntPart3");
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}
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void SnapshotByteSink::PutRaw(byte* data, int number_of_bytes,
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const char* description) {
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for (int i = 0; i < number_of_bytes; ++i) {
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Put(data[i], description);
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}
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}
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void SnapshotByteSink::PutBlob(byte* data, int number_of_bytes,
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const char* description) {
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PutInt(number_of_bytes, description);
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PutRaw(data, number_of_bytes, description);
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}
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bool SnapshotByteSource::AtEOF() {
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if (0u + length_ - position_ > 2 * sizeof(uint32_t)) return false;
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for (int x = position_; x < length_; x++) {
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if (data_[x] != SerializerDeserializer::nop()) return false;
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}
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return true;
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}
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bool SnapshotByteSource::GetBlob(const byte** data, int* number_of_bytes) {
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int size = GetInt();
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*number_of_bytes = size;
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if (position_ + size < length_) {
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*data = &data_[position_];
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Advance(size);
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return true;
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} else {
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Advance(length_ - position_); // proceed until end.
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return false;
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}
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}
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void DebugSnapshotSink::Put(byte b, const char* description) {
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PrintF("%24s: %x\n", description, b);
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sink_->Put(b, description);
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}
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} // namespace v8::internal
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} // namespace v8
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