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

   1 // Copyright Antony Polukhin, 2016-2022.
   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/winapi/get_current_process.hpp>
  20 #include <boost/winapi/file_management.hpp>
  21 #include <boost/winapi/handles.hpp>
  22 #include <boost/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 #if 0 // This code potentially could cause deadlocks (according to the MSDN). Disabled
  28     boost::winapi::DWORD_ written;
  29     const boost::winapi::DWORD_ bytes_to_write = static_cast<boost::winapi::DWORD_>(
  30         sizeof(native_frame_ptr_t) * frames_count
  31     );
  32     if (!boost::winapi::WriteFile(fd, frames, bytes_to_write, &written, 0)) {
  33         return 0;
  34     }
  35
  36     return frames_count;
  37 #endif
  38     return 0;
  39 }
  40
  41 std::size_t dump(const char* /*file*/, const native_frame_ptr_t* /*frames*/, std::size_t /*frames_count*/) BOOST_NOEXCEPT {
  42 #if 0 // This code causing deadlocks on some platforms. Disabled
  43     void* const fd = boost::winapi::CreateFileA(
  44         file,
  45         boost::winapi::GENERIC_WRITE_,
  46         0,
  47         0,
  48         boost::winapi::CREATE_ALWAYS_,
  49         boost::winapi::FILE_ATTRIBUTE_NORMAL_,
  50         0
  51     );
  52
  53     if (fd == boost::winapi::invalid_handle_value) {
  54         return 0;
  55     }
  56
  57     const std::size_t size = boost::stacktrace::detail::dump(fd, frames, frames_count);
  58     boost::winapi::CloseHandle(fd);
  59     return size;
  60 #endif
  61     return 0;
  62 }
  63
  64 }}} // namespace boost::stacktrace::detail
  65
  66 #endif // BOOST_STACKTRACE_DETAIL_SAFE_DUMP_WIN_IPP