StreamAsynchronousIO.h

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//===-- StreamAsynchronousIO.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 LLDB_CORE_STREAMASYNCHRONOUSIO_H
#define LLDB_CORE_STREAMASYNCHRONOUSIO_H
 
#include "lldb/Utility/Stream.h"
 
#include <string>
 
#include <cstddef>
 
namespace lldb_private {
class Debugger;
 
/// A stream meant for asynchronously printing output. Output is buffered until
/// the stream is flushed or destroyed. Printing is handled by the currently
/// active IOHandler, or the debugger's output or error stream if there is none.
class StreamAsynchronousIO : public Stream {
public:
  enum ForSTDOUT : bool {
    STDOUT = true,
    STDERR = false,
  };
 
  StreamAsynchronousIO(Debugger &debugger, ForSTDOUT for_stdout);
 
  ~StreamAsynchronousIO() override;
 
  void Flush() override;
 
protected:
  size_t WriteImpl(const void *src, size_t src_len) override;
 
private:
  Debugger &m_debugger;
  std::string m_data;
  ForSTDOUT m_for_stdout;
};
 
} // namespace lldb_private
 
#endif // LLDB_CORE_STREAMASYNCHRONOUSIO_H