64 lines
2.1 KiB
C
Executable File
64 lines
2.1 KiB
C
Executable File
// POSIX asynchronous I/O
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//
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// Copyright (c) 2003 Jan Wassenberg
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// Contact info:
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// Jan.Wassenberg@stud.uni-karlsruhe.de
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// http://www.stud.uni-karlsruhe.de/~urkt/
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// included by posix.h
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// Note: for maximum efficiency, transfer buffers, offsets, and lengths
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// should be sector aligned (otherwise, buffer is copied).
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struct aiocb
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{
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int aio_fildes; // File descriptor.
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off_t aio_offset; // File offset.
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void* aio_buf; // Location of buffer.
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size_t aio_nbytes; // Length of transfer.
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int aio_reqprio; // Request priority offset.
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struct sigevent aio_sigevent; // Signal number and value.
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int aio_lio_opcode; // Operation to be performed.
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};
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enum
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{
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// aio_cancel return
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AIO_ALLDONE, // None of the requested operations could be canceled since they are already complete.
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AIO_CANCELED, // All requested operations have been canceled.
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AIO_NOTCANCELED, // Some of the requested operations could not be canceled since they are in progress.
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// lio_listio mode
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LIO_WAIT, // wait until all I/O is complete
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LIO_NOWAIT,
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// lio_listio ops
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LIO_NOP,
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LIO_READ,
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LIO_WRITE
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};
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extern int aio_cancel(int, struct aiocb*);
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extern int aio_error(const struct aiocb*);
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extern int aio_fsync(int, struct aiocb*);
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extern int aio_read(struct aiocb*);
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extern ssize_t aio_return(struct aiocb*);
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extern int aio_suspend(const struct aiocb* const[], int, const struct timespec*);
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extern int aio_write(struct aiocb*);
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extern int lio_listio(int, struct aiocb* const[], int, struct sigevent*);
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extern int aio_close(int fd);
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extern int aio_open(const char* fn, int mode, int fd);
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