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//
// PipeImpl_WIN32.cpp
//
// Library: Foundation
// Package: Processes
// Module: PipeImpl
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/PipeImpl_WIN32.h"
#include "Poco/Exception.h"
namespace Poco {
PipeImpl::PipeImpl()
{
SECURITY_ATTRIBUTES attr;
attr.nLength = sizeof(attr);
attr.lpSecurityDescriptor = NULL;
attr.bInheritHandle = FALSE;
if (!CreatePipe(&_readHandle, &_writeHandle, &attr, 0))
throw CreateFileException("anonymous pipe");
}
PipeImpl::~PipeImpl()
{
closeRead();
closeWrite();
}
int PipeImpl::writeBytes(const void* buffer, int length)
{
poco_assert (_writeHandle != INVALID_HANDLE_VALUE);
DWORD bytesWritten = 0;
if (!WriteFile(_writeHandle, buffer, length, &bytesWritten, NULL))
throw WriteFileException("anonymous pipe");
return bytesWritten;
}
int PipeImpl::readBytes(void* buffer, int length)
{
poco_assert (_readHandle != INVALID_HANDLE_VALUE);
DWORD bytesRead = 0;
BOOL ok = ReadFile(_readHandle, buffer, length, &bytesRead, NULL);
if (ok || GetLastError() == ERROR_BROKEN_PIPE)
return bytesRead;
else
throw ReadFileException("anonymous pipe");
}
PipeImpl::Handle PipeImpl::readHandle() const
{
return _readHandle;
}
PipeImpl::Handle PipeImpl::writeHandle() const
{
return _writeHandle;
}
void PipeImpl::closeRead()
{
if (_readHandle != INVALID_HANDLE_VALUE)
{
CloseHandle(_readHandle);
_readHandle = INVALID_HANDLE_VALUE;
}
}
void PipeImpl::closeWrite()
{
if (_writeHandle != INVALID_HANDLE_VALUE)
{
CloseHandle(_writeHandle);
_writeHandle = INVALID_HANDLE_VALUE;
}
}
} // namespace Poco
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