109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
/* aio.h - asynchronous I/O header file */
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/* Copyright 1984-2006, 2010 Wind River Systems, Inc.
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*
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* The right to copy, distribute, modify or otherwise make use
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* of this software may be licensed only pursuant to the terms
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* of an applicable Wind River license agreement.
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*/
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/*
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modification history
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--------------------
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01l,21jun10,jxu LP64: add prototype for aioVerboseEnable.
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01k,28apr10,pad Moved extern C statement after include statements.
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01j,11aug06,jlk Fix: WIND0006174 - lio_listio for pse52
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01i,15mar06,mil Updated include quotes.
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01h,18jan06,mil Updated for POSIX namespace conformance (P1).
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01g,08jan06,hya fixed prototype of aio_return.
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01f,21nov05,md fix prototypes for lio_listio and aio_suspend
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01f,19apr05,hya added aio_fsync.
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01e,30jan04,dat Rework for RTP compatibility
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01d,18jul96,dbt added aioPxLibInit() and aioShow() prototypes (SPR #3227).
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01c,23jan96,tpr added ; after lio_listio () prototype definition.
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added Copyright line.
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01b,26jan94,kdl removed prototype for aio_fsync(); minor cleanup.
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01a,04apr93,elh written.
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*/
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#ifndef __INCaioh
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#define __INCaioh
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/* includes */
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#include <sys/types.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <private/aioPxLibP.h> /* private APIs, do not use */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* defines */
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/* aio_cancel() return values */
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#define AIO_CANCELED 1 /* operations canceled */
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#define AIO_NOTCANCELED 2 /* operations are in progress */
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#define AIO_ALLDONE 3 /* operations complete */
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/* lio_listio() modes */
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#define LIO_WAIT 4 /* wait for completion */
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#define LIO_NOWAIT 5 /* don't wait for completion */
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/* lio_listio() operations */
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/* lio op codes */
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#define LIO_READ 0 /* read operation */
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#define LIO_WRITE 1 /* write operation */
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#define LIO_NOP 2 /* no transfer operation*/
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/* Asynchronous I/O control block */
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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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volatile 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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/* WRS addition */
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struct aio_sys aio_sys; /* implementation-specific */
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};
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/* forward declarations */
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extern int aio_read (struct aiocb *);
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extern int aio_write (struct aiocb *);
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#ifdef _WRS_KERNEL
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extern int lio_listio (int, struct aiocb * const[], int,
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struct sigevent *);
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#else
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extern int lio_listio (int, struct aiocb * _Restrict const[], int,
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struct sigevent * _Restrict);
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#endif
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extern int aio_error (const struct aiocb *);
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extern ssize_t aio_return (struct aiocb *);
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extern int aio_cancel (int, struct aiocb *);
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extern int aio_suspend (const struct aiocb *const[], int ,
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const struct timespec *);
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extern int aio_fsync (int, struct aiocb *);
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#if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) && \
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!defined(_POSIX_AEP_RT_CONTROLLER_C_SOURCE)
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extern STATUS aioPxLibInit (int lioMax);
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extern STATUS aioShow (int notUsed);
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extern int aioVerboseEnable (void);
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#endif /* _POSIX_xxx_SOURCE */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __INCaioh */
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