/* * Copyright (C) 2003-2013 The Music Player Daemon Project * http://www.musicpd.org * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "config.h" #ifdef USE_EVENTFD #include "EventFD.hxx" #include "fd_util.h" #include "gcc.h" #include #include #ifdef WIN32 static bool PoorSocketPair(int fd[2]); #endif bool EventFD::Create() { assert(fd == -1); fd = eventfd_cloexec_nonblock(0, 0); return fd >= 0; } void EventFD::Destroy() { close(fd); #ifndef NDEBUG fd = -1; #endif } bool EventFD::Read() { assert(fd >= 0); eventfd_t value; return read(fd, &value, sizeof(value)) == (ssize_t)sizeof(value); } void EventFD::Write() { assert(fd >= 0); static constexpr eventfd_t value = 1; gcc_unused ssize_t nbytes = write(fd, &value, sizeof(value)); } #endif /* USE_EVENTFD */