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//===-- PipePosix.h ---------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_Host_windows_PipeWindows_h_
#define liblldb_Host_windows_PipeWindows_h_
#include "lldb/Host/PipeBase.h"
#include "lldb/Host/windows/windows.h"
namespace lldb_private {
//----------------------------------------------------------------------
/// @class Pipe PipeWindows.h "lldb/Host/windows/PipeWindows.h"
/// A windows-based implementation of Pipe, a class that abtracts
/// unix style pipes.
///
/// A class that abstracts the LLDB core from host pipe functionality.
//----------------------------------------------------------------------
class PipeWindows : public PipeBase {
public:
static const int kInvalidDescriptor = -1;
public:
PipeWindows();
PipeWindows(lldb::pipe_t read, lldb::pipe_t write);
~PipeWindows() override;
// Create an unnamed pipe.
Status CreateNew(bool child_process_inherit) override;
// Create a named pipe.
Status CreateNewNamed(bool child_process_inherit);
Status CreateNew(llvm::StringRef name, bool child_process_inherit) override;
Status CreateWithUniqueName(llvm::StringRef prefix,
bool child_process_inherit,
llvm::SmallVectorImpl<char> &name) override;
Status OpenAsReader(llvm::StringRef name,
bool child_process_inherit) override;
Status
OpenAsWriterWithTimeout(llvm::StringRef name, bool child_process_inherit,
const std::chrono::microseconds &timeout) override;
bool CanRead() const override;
bool CanWrite() const override;
lldb::pipe_t GetReadPipe() const { return lldb::pipe_t(m_read); }
lldb::pipe_t GetWritePipe() const { return lldb::pipe_t(m_write); }
int GetReadFileDescriptor() const override;
int GetWriteFileDescriptor() const override;
int ReleaseReadFileDescriptor() override;
int ReleaseWriteFileDescriptor() override;
void CloseReadFileDescriptor() override;
void CloseWriteFileDescriptor() override;
void Close() override;
Status Delete(llvm::StringRef name) override;
Status Write(const void *buf, size_t size, size_t &bytes_written) override;
Status ReadWithTimeout(void *buf, size_t size,
const std::chrono::microseconds &timeout,
size_t &bytes_read) override;
// PipeWindows specific methods. These allow access to the underlying OS
// handle.
HANDLE GetReadNativeHandle();
HANDLE GetWriteNativeHandle();
private:
Status OpenNamedPipe(llvm::StringRef name, bool child_process_inherit,
bool is_read);
HANDLE m_read;
HANDLE m_write;
int m_read_fd;
int m_write_fd;
OVERLAPPED m_read_overlapped;
OVERLAPPED m_write_overlapped;
};
} // namespace lldb_private
#endif // liblldb_Host_posix_PipePosix_h_
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