| /* |
| Copyright (c) 2012-2013 Martin Sustrik All rights reserved. |
| Copyright (c) 2015-2016 Jack R. Dunaway. All rights reserved. |
| Copyright 2017 Garrett D'Amore <garrett@damore.org> |
| Copyright 2017 Capitar IT Group BV <info@capitar.com> |
| |
| |
| Permission is hereby granted, free of charge, to any person obtaining a copy |
| of this software and associated documentation files (the "Software"), |
| to deal in the Software without restriction, including without limitation |
| the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| and/or sell copies of the Software, and to permit persons to whom |
| the Software is furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included |
| in all copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| IN THE SOFTWARE. |
| */ |
| |
| #include "efd.h" |
| #include "clock.h" |
| |
| #if defined NN_USE_EVENTFD |
| #include "efd_eventfd.inc" |
| #elif defined NN_USE_PIPE |
| #include "efd_pipe.inc" |
| #elif defined NN_USE_SOCKETPAIR |
| #include "efd_socketpair.inc" |
| #elif defined NN_USE_WINSOCK |
| #include "efd_win.inc" |
| #else |
| #error |
| #endif |
| |
| #if defined NN_HAVE_POLL |
| |
| #include <poll.h> |
| |
| int nn_efd_wait (struct nn_efd *self, int timeout) |
| { |
| int rc; |
| struct pollfd pfd; |
| |
| pfd.fd = nn_efd_getfd (self); |
| pfd.events = POLLIN; |
| if (pfd.fd < 0) |
| return -EBADF; |
| |
| rc = poll (&pfd, 1, timeout); |
| switch (rc) { |
| case 0: |
| return -ETIMEDOUT; |
| case -1: |
| return (-errno); |
| } |
| return 0; |
| } |
| |
| #elif defined NN_HAVE_WINDOWS |
| |
| int nn_efd_wait (struct nn_efd *self, int timeout) |
| { |
| int rc; |
| WSAPOLLFD pfd; |
| |
| pfd.fd = self->r; |
| if (nn_slow (pfd.fd == INVALID_SOCKET)) { |
| return -EBADF; |
| } |
| pfd.events = POLLIN; |
| rc = WSAPoll(&pfd, 1, timeout); |
| |
| switch (rc) { |
| case 0: |
| return -ETIMEDOUT; |
| case SOCKET_ERROR: |
| rc = nn_err_wsa_to_posix (WSAGetLastError ()); |
| errno = rc; |
| |
| /* Treat these as a non-fatal errors, typically occuring when the |
| socket is being closed from a separate thread during a blocking |
| I/O operation. */ |
| if (rc == EINTR || rc == ENOTSOCK) { |
| return self->r == INVALID_SOCKET ? -EBADF : -EINTR; |
| } |
| return (-rc); |
| } |
| return (0); |
| } |
| |
| #else |
| #error |
| #endif |