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/****************************************************************
* *
* Copyright (c) 2003-2017 Fidelity National Information *
* Services, Inc. and/or its subsidiaries. All rights reserved. *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#ifndef GTM_AIO_H
#define GTM_AIO_H
#if defined(MUR_USE_AIO)
#ifndef __CYGWIN__
#include <aio.h>
#endif
#if defined(__CYGWIN__) && !defined(AIO_CANCELED)
/* minimal just to satisfy mur_init.c and mur_read_file.h.
* More would be needed if MUR_USE_AIO were defined */
struct aiocb {
int aio_fildes;
volatile void *aio_buf;
size_t aio_nbytes;
off_t aio_offset;
size_t aio_bytesread;
int aio_errno;
};
#endif /* __CYGWIN__ empty aio.h */
#define AIO_POLL_SLEEP_TIME 10 /* 10 msec */
#if defined(_AIX)
#define AIO_READ(FD, AIOCBP, STATUS1, STATUS2) \
{ \
STATUS2 = SS_NORMAL; \
(AIOCBP)->aio_whence = SEEK_SET; \
do \
{ \
STATUS1 = aio_read(FD, AIOCBP); \
} while(-1 == STATUS1 && EAGAIN == errno); \
if (-1 == STATUS1) \
STATUS1 = errno; \
}
#define AIO_ERROR(AIOCBP, STATUS) \
MBSTART { \
intrpt_state_t prev_intrpt_state; \
\
DEFER_INTERRUPTS(INTRPT_IN_AIO_ERROR, prev_intrpt_state); \
STATUS = aio_error((AIOCBP)->aio_handle); \
while(STATUS == EINPROGRESS) \
{ \
ENABLE_INTERRUPTS(INTRPT_IN_AIO_ERROR, prev_intrpt_state); \
SHORT_SLEEP(AIO_POLL_SLEEP_TIME); \
DEFER_INTERRUPTS(INTRPT_IN_AIO_ERROR, prev_intrpt_state); \
STATUS = aio_error((AIOCBP)->aio_handle); \
} \
ENABLE_INTERRUPTS(INTRPT_IN_AIO_ERROR, prev_intrpt_state); \
} MBEND
#define AIO_RETURN(AIOCBP, STATUS) \
{ \
STATUS = aio_return((AIOCBP)->aio_handle); \
}
#else
/* Non-AIX */
#define AIO_READ(FD, AIOCBP, STATUS1, STATUS2) \
{ \
STATUS2 = SS_NORMAL; \
AIOCBP->aio_fildes = FD; \
do \
{ \
STATUS1 = aio_read(AIOCBP); \
} while(-1 == STATUS1 && EAGAIN == errno); \
if (-1 == STATUS1) \
STATUS1 = errno; \
}
#define AIO_ERROR(AIOCBP, STATUS) \
MBSTART { \
intrpt_state_t prev_intrpt_state; \
\
DEFER_INTERRUPTS(INTRPT_IN_AIO_ERROR, prev_intrpt_state); \
STATUS = aio_error(AIOCBP); \
while(STATUS == EINPROGRESS) \
{ \
ENABLE_INTERRUPTS(prev_intrpt_state, INTRPT_IN_AIO_ERROR); \
SHORT_SLEEP(AIO_POLL_SLEEP_TIME); \
DEFER_INTERRUPTS(INTRPT_IN_AIO_ERROR, prev_intrpt_state); \
STATUS = aio_error(AIOCBP); \
} \
ENABLE_INTERRUPTS(prev_intrpt_state, INTRPT_IN_AIO_ERROR); \
} MBEND
#define AIO_RETURN(AIOCBP, STATUS) \
{ \
STATUS = aio_return(AIOCBP); \
}
#endif
#define AIO_CANCEL(FD, AIOCBP, STATUS) \
{ \
STATUS = aio_cancel(FD, AIOCBP); \
}
#endif
#endif
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