ceph/src/boost/boost/stacktrace/detail/safe_dump_win.ipp

   1 // Copyright Antony Polukhin, 2016-2017.
   2 //
   3 // Distributed under the Boost Software License, Version 1.0. (See
   4 // accompanying file LICENSE_1_0.txt or copy at
   5 // http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #ifndef BOOST_STACKTRACE_DETAIL_SAFE_DUMP_WIN_IPP
   8 #define BOOST_STACKTRACE_DETAIL_SAFE_DUMP_WIN_IPP
   9
  10 #include <boost/config.hpp>
  11 #ifdef BOOST_HAS_PRAGMA_ONCE
  12 #   pragma once
  13 #endif
  14
  15 #include <boost/stacktrace/safe_dump_to.hpp>
  16
  17 #include <boost/core/noncopyable.hpp>
  18
  19 #include <boost/detail/winapi/get_current_process.hpp>
  20 #include <boost/detail/winapi/file_management.hpp>
  21 #include <boost/detail/winapi/handles.hpp>
  22 #include <boost/detail/winapi/access_rights.hpp>
  23
  24 namespace boost { namespace stacktrace { namespace detail {
  25
  26 std::size_t dump(void* fd, const native_frame_ptr_t* frames, std::size_t frames_count) BOOST_NOEXCEPT {
  27     boost::detail::winapi::DWORD_ written;
  28     const boost::detail::winapi::DWORD_ bytes_to_write = static_cast<boost::detail::winapi::DWORD_>(
  29         sizeof(native_frame_ptr_t) * frames_count
  30     );
  31     if (!boost::detail::winapi::WriteFile(fd, frames, bytes_to_write, &written, 0)) {
  32         return 0;
  33     }
  34
  35     return frames_count;
  36 }
  37
  38 std::size_t dump(const char* file, const native_frame_ptr_t* frames, std::size_t frames_count) BOOST_NOEXCEPT {
  39     void* const fd = boost::detail::winapi::CreateFileA(
  40         file,
  41         boost::detail::winapi::GENERIC_WRITE_,
  42         0,
  43         0,
  44         boost::detail::winapi::CREATE_ALWAYS_,
  45         boost::detail::winapi::FILE_ATTRIBUTE_NORMAL_,
  46         0
  47     );
  48
  49     if (fd == boost::detail::winapi::invalid_handle_value) {
  50         return 0;
  51     }
  52
  53     const std::size_t size = boost::stacktrace::detail::dump(fd, frames, frames_count);
  54     boost::detail::winapi::CloseHandle(fd);
  55     return size;
  56 }
  57
  58 }}} // namespace boost::stacktrace::detail
  59
  60 #endif // BOOST_STACKTRACE_DETAIL_SAFE_DUMP_WIN_IPP