1 files changed, 133 insertions, 0 deletions
diff --git a/src/common/fdset_poll.h b/src/common/fdset_poll.h
new file mode 100644
index 0000000..d72b5bb
--- /dev/null
+++ b/src/common/fdset_poll.h
@@ -0,0 +1,133 @@
+/*  Copyright (C) 2011 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+/*!
+ * \file fdset_poll.h
+ *
+ * \author Marek Vavrusa <marek.vavrusa@nic.cz>
+ *
+ * \brief Wrapper for poll I/O multiplexing.
+ *
+ * \addtogroup common_lib
+ * @{
+ */
+
+#ifndef _KNOTD_FDSET_POLL_H_
+#define _KNOTD_FDSET_POLL_H_
+
+#include "fdset.h"
+
+/*!
+ * \brief Create new fdset.
+ *
+ * POSIX poll() backend.
+ *
+ * \retval Pointer to initialized FDSET structure if successful.
+ * \retval NULL on error.
+ */
+fdset_t *fdset_poll_new();
+
+/*!
+ * \brief Destroy FDSET.
+ *
+ * \retval 0 if successful.
+ * \retval -1 on error.
+ */
+int fdset_poll_destroy(fdset_t * fdset);
+
+/*!
+ * \brief Add file descriptor to watched set.
+ *
+ * \param fdset Target set.
+ * \param fd Added file descriptor.
+ * \param events Mask of watched events.
+ *
+ * \retval 0 if successful.
+ * \retval -1 on errors.
+ */
+int fdset_poll_add(fdset_t *fdset, int fd, int events);
+
+/*!
+ * \brief Remove file descriptor from watched set.
+ *
+ * \param fdset Target set.
+ * \param fd File descriptor to be removed.
+ *
+ * \retval 0 if successful.
+ * \retval -1 on errors.
+ */
+int fdset_poll_remove(fdset_t *fdset, int fd);
+
+/*!
+ * \brief Poll set for new events.
+ *
+ * \param fdset Target set.
+ *
+ * \retval Number of events if successful.
+ * \retval -1 on errors.
+ *
+ * \todo Timeout.
+ */
+int fdset_poll_wait(fdset_t *fdset);
+
+/*!
+ * \brief Set event iterator to the beginning of last polled events.
+ *
+ * \param fdset Target set.
+ * \param it Event iterator.
+ *
+ * \retval 0 if successful.
+ * \retval -1 on errors.
+ */
+int fdset_poll_begin(fdset_t *fdset, fdset_it_t *it);
+
+/*!
+ * \brief Set event iterator to the end of last polled events.
+ *
+ * \param fdset Target set.
+ * \param it Event iterator.
+ *
+ * \retval 0 if successful.
+ * \retval -1 on errors.
+ */
+int fdset_poll_end(fdset_t *fdset, fdset_it_t *it);
+
+/*!
+ * \brief Set event iterator to the next event.
+ *
+ * Event iterator fd will be set to -1 if next event doesn't exist.
+ *
+ * \param fdset Target set.
+ * \param it Event iterator.
+ *
+ * \retval 0 if successful.
+ * \retval -1 on errors.
+ */
+int fdset_poll_next(fdset_t *fdset, fdset_it_t *it);
+
+/*!
+ * \brief Returned name of poll method.
+ *
+ * \retval Name if successful.
+ * \retval NULL if no method was loaded (shouldn't happen).
+ */
+const char* fdset_poll_method();
+
+/*! \brief Exported API. */
+extern struct fdset_backend_t FDSET_POLL;
+
+#endif /* _KNOTD_FDSET_POLL_H_ */
+
+/*! @} */