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#include "serialize.h"
#include <yt/yt/core/concurrency/fls.h>
#include <library/cpp/yt/assert/assert.h>
namespace NYT {
////////////////////////////////////////////////////////////////////////////////
const std::array<ui8, ZeroBufferSize> ZeroBuffer{};
////////////////////////////////////////////////////////////////////////////////
void AssertSerializationAligned(i64 byteSize)
{
YT_ASSERT(AlignUpSpace<i64>(byteSize, SerializationAlignment) == 0);
}
void VerifySerializationAligned(i64 byteSize)
{
YT_VERIFY(AlignUpSpace<i64>(byteSize, SerializationAlignment) == 0);
}
////////////////////////////////////////////////////////////////////////////////
namespace {
int& CrashOnErrorDepth()
{
static NConcurrency::TFlsSlot<int> Slot;
return *Slot;
}
} // namespace
TCrashOnDeserializationErrorGuard::TCrashOnDeserializationErrorGuard()
{
++CrashOnErrorDepth();
}
TCrashOnDeserializationErrorGuard::~TCrashOnDeserializationErrorGuard()
{
YT_VERIFY(--CrashOnErrorDepth() >= 0);
}
void TCrashOnDeserializationErrorGuard::OnError()
{
YT_VERIFY(CrashOnErrorDepth() == 0);
}
////////////////////////////////////////////////////////////////////////////////
TSaveContextStream::TSaveContextStream(IOutputStream* output)
: BufferedOutput_(output)
, Output_(&*BufferedOutput_)
{ }
TSaveContextStream::TSaveContextStream(IZeroCopyOutput* output)
: Output_(output)
{ }
void TSaveContextStream::FlushBuffer()
{
Output_->Undo(BufferRemaining_);
BufferPtr_ = nullptr;
BufferRemaining_ = 0;
Output_->Flush();
if (BufferedOutput_) {
BufferedOutput_->Flush();
}
}
void TSaveContextStream::WriteSlow(const void* buf, size_t len)
{
auto bufPtr = static_cast<const char*>(buf);
auto toWrite = len;
while (toWrite > 0) {
if (BufferRemaining_ == 0) {
BufferRemaining_ = Output_->Next(&BufferPtr_);
}
YT_ASSERT(BufferRemaining_ > 0);
auto toCopy = std::min(toWrite, BufferRemaining_);
::memcpy(BufferPtr_, bufPtr, toCopy);
BufferPtr_ += toCopy;
BufferRemaining_ -= toCopy;
bufPtr += toCopy;
toWrite -= toCopy;
}
}
////////////////////////////////////////////////////////////////////////////////
TStreamSaveContext::TStreamSaveContext(
IOutputStream* output,
int version)
: Output_(output)
, Version_(version)
{ }
TStreamSaveContext::TStreamSaveContext(
IZeroCopyOutput* output,
int version)
: Output_(output)
, Version_(version)
{ }
void TStreamSaveContext::Finish()
{
Output_.FlushBuffer();
}
////////////////////////////////////////////////////////////////////////////////
TLoadContextStream::TLoadContextStream(IInputStream* input)
: Input_(input)
{ }
TLoadContextStream::TLoadContextStream(IZeroCopyInput* input)
: ZeroCopyInput_(input)
{ }
void TLoadContextStream::ClearBuffer()
{
if (BufferRemaining_ > 0) {
BufferPtr_ = nullptr;
BufferRemaining_ = 0;
}
}
size_t TLoadContextStream::LoadSlow(void* buf, size_t len)
{
if (ZeroCopyInput_) {
auto bufPtr = static_cast<char*>(buf);
auto toRead = len;
while (toRead > 0) {
if (BufferRemaining_ == 0) {
BufferRemaining_ = ZeroCopyInput_->Next(&BufferPtr_);
if (BufferRemaining_ == 0) {
break;
}
}
YT_ASSERT(BufferRemaining_ > 0);
auto toCopy = std::min(toRead, BufferRemaining_);
::memcpy(bufPtr, BufferPtr_, toCopy);
BufferPtr_ += toCopy;
BufferRemaining_ -= toCopy;
bufPtr += toCopy;
toRead -= toCopy;
}
return len - toRead;
} else {
return Input_->Load(buf, len);
}
}
////////////////////////////////////////////////////////////////////////////////
TStreamLoadContext::TStreamLoadContext(IInputStream* input)
: Input_(input)
{ }
TStreamLoadContext::TStreamLoadContext(IZeroCopyInput* input)
: Input_(input)
{ }
////////////////////////////////////////////////////////////////////////////////
TEntityStreamSaveContext::TEntityStreamSaveContext(
IZeroCopyOutput* output,
TEntityStreamSaveContext* parentContext)
: TStreamSaveContext(
output,
parentContext->GetVersion())
, ParentContext_(parentContext)
{ }
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
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