Knight KE / Mbed OS Game_Master

游戏王对战板，目前code还是空的

mbed-os/platform/mbed_poll.h@0:9b3d4731edbb, 2018-06-21 (annotated)

Committer:
WFKnight
Date:
Thu Jun 21 13:51:43 2018 +0000
Revision:
0:9b3d4731edbb
UART, RTOS, LED

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WFKnight 0:9b3d4731edbb 1 /* mbed Microcontroller Library
WFKnight 0:9b3d4731edbb 2 * Copyright (c) 2017 ARM Limited
WFKnight 0:9b3d4731edbb 3 *
WFKnight 0:9b3d4731edbb 4 * Licensed under the Apache License, Version 2.0 (the "License");
WFKnight 0:9b3d4731edbb 5 * you may not use this file except in compliance with the License.
WFKnight 0:9b3d4731edbb 6 * You may obtain a copy of the License at
WFKnight 0:9b3d4731edbb 7 *
WFKnight 0:9b3d4731edbb 8 * http://www.apache.org/licenses/LICENSE-2.0
WFKnight 0:9b3d4731edbb 9 *
WFKnight 0:9b3d4731edbb 10 * Unless required by applicable law or agreed to in writing, software
WFKnight 0:9b3d4731edbb 11 * distributed under the License is distributed on an "AS IS" BASIS,
WFKnight 0:9b3d4731edbb 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
WFKnight 0:9b3d4731edbb 13 * See the License for the specific language governing permissions and
WFKnight 0:9b3d4731edbb 14 * limitations under the License.
WFKnight 0:9b3d4731edbb 15 */
WFKnight 0:9b3d4731edbb 16 #ifndef MBED_POLL_H
WFKnight 0:9b3d4731edbb 17 #define MBED_POLL_H
WFKnight 0:9b3d4731edbb 18
WFKnight 0:9b3d4731edbb 19 #define POLLIN 0x0001 ///< Data may be read without blocking
WFKnight 0:9b3d4731edbb 20 #define POLLOUT 0x0010 ///< Data may be written without blocking
WFKnight 0:9b3d4731edbb 21 #define POLLERR 0x1000 ///< An error has occurred on the device or stream
WFKnight 0:9b3d4731edbb 22 #define POLLHUP 0x2000 ///< The device has been disconnected
WFKnight 0:9b3d4731edbb 23 #define POLLNVAL 0x4000 ///< The specified file handle value is invalid
WFKnight 0:9b3d4731edbb 24
WFKnight 0:9b3d4731edbb 25 namespace mbed {
WFKnight 0:9b3d4731edbb 26
WFKnight 0:9b3d4731edbb 27 class FileHandle;
WFKnight 0:9b3d4731edbb 28
WFKnight 0:9b3d4731edbb 29 /** \addtogroup platform */
WFKnight 0:9b3d4731edbb 30 /** @{*/
WFKnight 0:9b3d4731edbb 31 /**
WFKnight 0:9b3d4731edbb 32 * \defgroup platform_poll poll functions
WFKnight 0:9b3d4731edbb 33 * @{
WFKnight 0:9b3d4731edbb 34 */
WFKnight 0:9b3d4731edbb 35
WFKnight 0:9b3d4731edbb 36 struct pollfh {
WFKnight 0:9b3d4731edbb 37 FileHandle *fh;
WFKnight 0:9b3d4731edbb 38 short events;
WFKnight 0:9b3d4731edbb 39 short revents;
WFKnight 0:9b3d4731edbb 40 };
WFKnight 0:9b3d4731edbb 41
WFKnight 0:9b3d4731edbb 42 /** A mechanism to multiplex input/output over a set of file handles(file descriptors).
WFKnight 0:9b3d4731edbb 43 * For every file handle provided, poll() examines it for any events registered for that particular
WFKnight 0:9b3d4731edbb 44 * file handle.
WFKnight 0:9b3d4731edbb 45 *
WFKnight 0:9b3d4731edbb 46 * @param fhs an array of PollFh struct carrying a FileHandle and bitmasks of events
WFKnight 0:9b3d4731edbb 47 * @param nfhs number of file handles
WFKnight 0:9b3d4731edbb 48 * @param timeout timer value to timeout or -1 for loop forever
WFKnight 0:9b3d4731edbb 49 *
WFKnight 0:9b3d4731edbb 50 * @return number of file handles selected (for which revents is non-zero). 0 if timed out with nothing selected. -1 for error.
WFKnight 0:9b3d4731edbb 51 */
WFKnight 0:9b3d4731edbb 52 int poll(pollfh fhs[], unsigned nfhs, int timeout);
WFKnight 0:9b3d4731edbb 53
WFKnight 0:9b3d4731edbb 54 /**@}*/
WFKnight 0:9b3d4731edbb 55
WFKnight 0:9b3d4731edbb 56 /**@}*/
WFKnight 0:9b3d4731edbb 57
WFKnight 0:9b3d4731edbb 58 } // namespace mbed
WFKnight 0:9b3d4731edbb 59
WFKnight 0:9b3d4731edbb 60 #endif //MBED_POLL_H