IOObject.h revision 320543 
1//===-- IOObject.h ----------------------------------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef liblldb_Host_Common_IOObject_h_
11#define liblldb_Host_Common_IOObject_h_
12
13#include <stdarg.h>
14#include <stdio.h>
15#include <sys/types.h>
16
17#include "lldb/lldb-private.h"
18
19namespace lldb_private {
20
21class IOObject {
22public:
23  typedef enum {
24    eFDTypeFile,   // Other FD requiring read/write
25    eFDTypeSocket, // Socket requiring send/recv
26  } FDType;
27
28  // TODO: On Windows this should be a HANDLE, and wait should use
29  // WaitForMultipleObjects
30  typedef int WaitableHandle;
31  static const WaitableHandle kInvalidHandleValue;
32
33  IOObject(FDType type, bool should_close)
34      : m_fd_type(type), m_should_close_fd(should_close) {}
35  virtual ~IOObject();
36
37  virtual Status Read(void *buf, size_t &num_bytes) = 0;
38  virtual Status Write(const void *buf, size_t &num_bytes) = 0;
39  virtual bool IsValid() const = 0;
40  virtual Status Close() = 0;
41
42  FDType GetFdType() const { return m_fd_type; }
43
44  virtual WaitableHandle GetWaitableHandle() = 0;
45
46protected:
47  FDType m_fd_type;
48  bool m_should_close_fd; // True if this class should close the file descriptor
49                          // when it goes away.
50
51private:
52  DISALLOW_COPY_AND_ASSIGN(IOObject);
53};
54} // namespace lldb_private
55
56#endif
57