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28
29/// \file utils/process/systembuf.hpp
30/// Provides the utils::process::systembuf class.
31
32#if !defined(UTILS_PROCESS_SYSTEMBUF_HPP)
33#define UTILS_PROCESS_SYSTEMBUF_HPP
34
35#include "utils/process/systembuf_fwd.hpp"
36
37#include <cstddef>
38#include <memory>
39#include <streambuf>
40
41#include "utils/noncopyable.hpp"
42
43namespace utils {
44namespace process {
45
46
47/// A std::streambuf implementation for raw file descriptors.
48///
49/// This class grabs ownership of the file descriptor.  I.e. when the class is
50/// destroyed, the file descriptor is closed unconditionally.
51class systembuf : public std::streambuf, noncopyable {
52    struct impl;
53
54    /// Pointer to the shared internal implementation.
55    std::auto_ptr< impl > _pimpl;
56
57protected:
58    int_type underflow(void);
59    int_type overflow(int);
60    int sync(void);
61
62public:
63    explicit systembuf(const int, std::size_t = 8192);
64    ~systembuf(void);
65};
66
67
68}  // namespace process
69}  // namespace utils
70
71#endif  // !defined(UTILS_PROCESS_SYSTEMBUF_HPP)
72