1 // Copyright 2010 The Kyua Authors. 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above copyright 11 // notice, this list of conditions and the following disclaimer in the 12 // documentation and/or other materials provided with the distribution. 13 // * Neither the name of Google Inc. nor the names of its contributors 14 // may be used to endorse or promote products derived from this software 15 // without specific prior written permission. 16 // 17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 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 43 namespace utils { 44 namespace 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. 51 class systembuf : public std::streambuf, noncopyable { 52 struct impl; 53 54 /// Pointer to the shared internal implementation. 55 std::auto_ptr< impl > _pimpl; 56 57 protected: 58 int_type underflow(void); 59 int_type overflow(int); 60 int sync(void); 61 62 public: 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