From 5e9b32b439627068a0292370fe595220dbfc95a0 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Tue, 26 Sep 1995 19:27:15 +0000 Subject: posix support initially added --- c/src/exec/posix/include/aio.h | 136 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 136 insertions(+) create mode 100644 c/src/exec/posix/include/aio.h (limited to 'c/src/exec/posix/include/aio.h') diff --git a/c/src/exec/posix/include/aio.h b/c/src/exec/posix/include/aio.h new file mode 100644 index 0000000000..2fbb8ad925 --- /dev/null +++ b/c/src/exec/posix/include/aio.h @@ -0,0 +1,136 @@ +/* aio.h + * + */ + +#ifndef __POSIX_ASYNCHRONOUS_IO_h +#define __POSIX_ASYNCHRONOUS_IO_h + +#include + +#if defined(_POSIX_ASYNCHRONOUS_IO) + +/* + * 6.7.1 Data Definitions for Asynchronous Input and Output, + * P1003.1b-1993, p. 151 + */ + +#include +#include +#include +#include + +/* + * 6.7.1.2 Manifest Constants, P1003.1b-1993, p. 153 + */ + +#define AIO_CANCELED 0 /* all requested operations have been canceled */ +#define AIO_NOTCANCELED 0 /* some of the operations could not be canceled */ + /* since they are in progress */ +#define AIO_ALLDONE 0 /* none of the requested operations could be */ + /* canceled since they are already complete */ + +/* lio_listio() options */ + +#define LIO_WAIT 0 /* calling process is to suspend until the */ + /* operation is complete */ +#define LIO_NOWAIT 0 /* calling process is to continue execution while */ + /* the operation is performed and no notification */ + /* shall be given when the operation is completed */ +#define LIO_READ 0 /* request a read() */ +#define LIO_WRITE 0 /* request a write() */ +#define LIO_NOP 0 /* no transfer is requested */ + +/* + * 6.7.1.1 Asynchronous I/O Control Block, P1003.1b-1993, p. 151 + */ + +struct aiocb { + int aio_fildes; /* File descriptor */ + off_t aio_offset; /* File offset */ + volatile void *aio_buf; /* Location of buffer */ + size_t aio_nbytes; /* Length of transfer */ + int aio_reqprio; /* Request priority offset */ + struct sigevent aio_sigevent; /* Signal number and value */ + int aoi_lio_opcode; /* Operation to be performed */ +}; + +/* + * 6.7.2 Asynchronous Read, P1003.1b-1993, p. 154 + */ + +int aio_read( + struct aiocb *aiocbp +); + +/* + * 6.7.3 Asynchronous Write, P1003.1b-1993, p. 155 + */ + +int aio_write( + struct aiocb *aiocbp +); + +/* + * 6.7.4 List Directed I/O, P1003.1b-1993, p. 158 + */ + +int lio_listio( + int mode, + struct aiocb * const list[], + int nent, + struct sigevent *sig +); + +/* + * 6.7.5 Retrieve Error of Asynchronous I/O Operation, P1003.1b-1993, p. 161 + */ + +int aio_error( + const struct aiocb *aiocbp +); + +/* + * 6.7.6 Retrieve Return Status of Asynchronous I/O Operation, + * P1003.1b-1993, p. 162 + */ + +int aio_return( + const struct aiocb *aiocbp +); + +/* + * 6.7.7 Cancel Asynchronous I/O Operation, P1003.1b-1993, p. 163 + */ + +int aio_cancel( + int filedes, + struct aiocb *aiocbp +); + +/* + * 6.7.7 Wait for Asynchronous I/O Request, P1003.1b-1993, p. 164 + */ + +int aio_suspend( + struct aiocb * const list[], + int nent, + const struct timespec *timeout +); + +#if defined(_POSIX_SYNCHRONIZED_IO) + +/* + * 6.7.9 Asynchronous File Synchronization, P1003.1b-1993, p. 166 + */ + +int aio_fsync( + int op, + struct aiocb *aiocbp +); + +#endif /* _POSIX_SYNCHRONIZED_IO */ + +#endif /* _POSIX_ASYNCHRONOUS_IO */ + +#endif +/* end of include file */ -- cgit v1.2.3