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Diffstat (limited to 'test/packetdrill/epoll.h')
-rw-r--r-- | test/packetdrill/epoll.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/test/packetdrill/epoll.h b/test/packetdrill/epoll.h new file mode 100644 index 0000000..dac032a --- /dev/null +++ b/test/packetdrill/epoll.h @@ -0,0 +1,62 @@ +/* + * Copyright 2017 Google Inc. + * + * 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. + */ +/* + * Author: weiwan@google.com (Wei Wang) + * + * Interface for tracking epolls in the kernel under test. + */ + +#ifndef __EPOLL_HDR_H__ +#define __EPOLL_HDR_H__ + +#include "types.h" + +#include "fd_state.h" + +/* Type specification for epoll_event->data */ +enum epoll_data_type_t { + EPOLL_DATA_PTR = 1, + EPOLL_DATA_FD, + EPOLL_DATA_U32, + EPOLL_DATA_U64, +}; + +/* The runtime state for epoll */ +struct epoll { + /* NOTE: struct fd_state must be first field in all fd flavors. */ + struct fd_state fd; /* info about fd for this epoll event */ +}; + +/* Convert to epoll pointer if the fd has type FD_EPOLL, + * otherwise return NULL. + */ +static inline struct epoll *fd_to_epoll(struct fd_state *fd) +{ + if (fd && fd->ops->type == FD_EPOLL) + return (struct epoll *)fd; + else + return NULL; +} + +struct state; + +/* Allocate and return a new epoll object. */ +extern struct epoll *epoll_new(struct state *state); + +#endif /* __EPOLL_HDR_H__ */ |