1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef _ASYNCIO_H 18 #define _ASYNCIO_H 19 20 #include <cstring> 21 #include <cstdint> 22 #include <linux/aio_abi.h> 23 #include <sys/cdefs.h> 24 #include <sys/types.h> 25 #include <time.h> 26 #include <unistd.h> 27 28 #ifdef __cplusplus 29 extern "C" { 30 #endif 31 32 /** 33 * Provides kernel aio operations. 34 */ 35 36 int io_setup(unsigned nr, aio_context_t* ctxp); 37 int io_destroy(aio_context_t ctx); 38 int io_submit(aio_context_t ctx, long nr, iocb** iocbpp); 39 int io_getevents(aio_context_t ctx, long min_nr, long max_nr, io_event* events, timespec* timeout); 40 int io_cancel(aio_context_t ctx, iocb*, io_event* result); 41 void io_prep(iocb* iocb, int fd, const void* buf, uint64_t count, int64_t offset, bool read); 42 43 #ifdef __cplusplus 44 }; 45 #endif 46 47 #endif // ASYNCIO_H 48
