Term::Private::Sigwinch Class Reference

#include <cpp-terminal/private/sigwinch.hpp>

Static Public Member Functions
static void	registerSigwinch ()
static void	blockSigwinch ()
static void	unblockSigwinch ()
static bool	isSigwinch (const std::int32_t &file_descriptor=-1) noexcept
static std::int32_t	get () noexcept

Static Private Attributes
static std::int32_t	m_fd {-1}

Detailed Description

Definition at line 19 of file sigwinch.hpp.

Member Function Documentation

blockSigwinch()

void Term::Private::Sigwinch::blockSigwinch ( )

static

Definition at line 65 of file sigwinch.cpp.

{
#if !defined(_WIN32)
  ::sigset_t windows_event = {};
  Term::Private::Errno().check_if(sigemptyset(&windows_event) != 0).throw_exception("sigemptyset(&windows_event)");
  Term::Private::Errno().check_if(sigaddset(&windows_event, SIGWINCH) != 0).throw_exception("sigaddset(&windows_event, SIGWINCH)");
  Term::Private::Errno().check_if(::pthread_sigmask(SIG_BLOCK, &windows_event, nullptr) != 0).throw_exception("::pthread_sigmask(SIG_BLOCK, &windows_event, nullptr)");
#endif
}

get()

std::int32_t Term::Private::Sigwinch::get ( )

staticnoexcept

Definition at line 38 of file sigwinch.cpp.

{
#if defined(__APPLE__) || defined(__wasm__) || defined(__wasm) || defined(__EMSCRIPTEN__)
  return Term::Private::m_signalStatus;
#else
  return m_fd;
#endif
}

isSigwinch()

bool Term::Private::Sigwinch::isSigwinch ( const std::int32_t & file_descriptor = -1 )

staticnoexcept

Definition at line 85 of file sigwinch.cpp.

{
#if defined(__APPLE__) || defined(__wasm__) || defined(__wasm) || defined(__EMSCRIPTEN__)
  if(Term::Private::m_signalStatus == 1)
  {
    static_cast<void>(file_descriptor);  // suppress warning
    Term::Private::m_signalStatus = {0};
    return true;
  }
  return false;
#elif defined(__linux__)
  if(m_fd == file_descriptor)
  {
    // read it to clean
    ::signalfd_siginfo fdsi = {};
    ::read(m_fd, &fdsi, sizeof(fdsi));
    return true;
  }
  return false;
#else
  static_cast<void>(file_descriptor);  // suppress warning
  return false;
#endif
}

registerSigwinch()

void Term::Private::Sigwinch::registerSigwinch ( )

static

Definition at line 49 of file sigwinch.cpp.

{
#if defined(__APPLE__) || defined(__wasm__) || defined(__wasm) || defined(__EMSCRIPTEN__)
  struct sigaction sa;
  Term::Private::Errno().check_if(sigemptyset(&sa.sa_mask) != 0).throw_exception("sigemptyset(&sa.sa_mask)");
  sa.sa_flags   = {0};
  sa.sa_handler = {Term::Private::sigwinchHandler};
  Term::Private::Errno().check_if(sigaction(SIGWINCH, &sa, nullptr) != 0).throw_exception("sigaction(SIGWINCH, &sa, nullptr)");
#elif defined(__linux__)
  ::sigset_t windows_event = {};
  Term::Private::Errno().check_if(sigemptyset(&windows_event) != 0).throw_exception("sigemptyset(&windows_event)");
  Term::Private::Errno().check_if(sigaddset(&windows_event, SIGWINCH) != 0).throw_exception("sigaddset(&windows_event, SIGWINCH)");
  Term::Private::Errno().check_if((m_fd = ::signalfd(-1, &windows_event, SFD_NONBLOCK | SFD_CLOEXEC)) == -1).throw_exception("m_fd = ::signalfd(-1, &windows_event, SFD_NONBLOCK | SFD_CLOEXEC)");
#endif
}

unblockSigwinch()

void Term::Private::Sigwinch::unblockSigwinch ( )

static

Definition at line 75 of file sigwinch.cpp.

{
#if !defined(_WIN32)
  ::sigset_t windows_event = {};
  Term::Private::Errno().check_if(sigemptyset(&windows_event) != 0).throw_exception("sigemptyset(&windows_event)");
  Term::Private::Errno().check_if(sigaddset(&windows_event, SIGWINCH) != 0).throw_exception("sigaddset(&windows_event, SIGWINCH)");
  Term::Private::Errno().check_if(::pthread_sigmask(SIG_UNBLOCK, &windows_event, nullptr) != 0).throw_exception("::pthread_sigmask(SIG_UNBLOCK, &windows_event, nullptr)");
#endif
}

Member Data Documentation

m_fd

std::int32_t Term::Private::Sigwinch::m_fd {-1}

staticprivate

Definition at line 47 of file sigwinch.hpp.

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The documentation for this class was generated from the following files:

• cpp-terminal/private/sigwinch.hpp
• cpp-terminal/private/sigwinch.cpp