-: 0:Source:/home/MPI/testing/mpich2/mpich2/src/mpi/romio/adio/ad_nfs/ad_nfs_iwrite.c
-: 0:Graph:ad_nfs_iwrite.gcno
-: 0:Data:-
-: 0:Runs:0
-: 0:Programs:0
-: 1:/* -*- Mode: C; c-basic-offset:4 ; -*- */
-: 2:/*
-: 3: * Copyright (C) 1997 University of Chicago.
-: 4: * See COPYRIGHT notice in top-level directory.
-: 5: */
-: 6:
-: 7:#include "ad_nfs.h"
-: 8:
-: 9:#include "../../mpi-io/mpioimpl.h"
-: 10:#include "../../mpi-io/mpioprof.h"
-: 11:#include "mpiu_greq.h"
-: 12:
-: 13:#include <string.h>
-: 14:
-: 15:#ifdef ROMIO_HAVE_WORKING_AIO
-: 16:static MPIX_Grequest_class ADIOI_GEN_greq_class = 0;
-: 17:/* this routine is nearly identical to ADIOI_GEN_IwriteContig, except we lock
-: 18: * around I/O */
-: 19:void ADIOI_NFS_IwriteContig(ADIO_File fd, void *buf, int count,
-: 20: MPI_Datatype datatype, int file_ptr_type,
-: 21: ADIO_Offset offset, ADIO_Request *request, int *error_code)
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#####: 22:{
-: 23: int len, typesize;
#####: 24: int aio_errno = 0;
-: 25: static char myname[] = "ADIOI_NFS_IWRITECONTIG";
-: 26:
#####: 27: MPI_Type_size(datatype, &typesize);
#####: 28: len = count * typesize;
-: 29:
#####: 30: if (file_ptr_type == ADIO_INDIVIDUAL) offset = fd->fp_ind;
#####: 31: aio_errno = ADIOI_NFS_aio(fd, buf, len, offset, 1, request);
#####: 32: if (file_ptr_type == ADIO_INDIVIDUAL) fd->fp_ind += len;
-: 33:
#####: 34: fd->fp_sys_posn = -1;
-: 35:
#####: 36: if (aio_errno != 0) {
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#####: 42: else *error_code = MPI_SUCCESS;
#####: 43: return;
-: 44:}
-: 45:#endif
-: 46:
-: 47:/* This function is for implementation convenience. It is not user-visible.
-: 48: * It takes care of the differences in the interface for nonblocking I/O
-: 49: * on various Unix machines! If wr==1 write, wr==0 read.
-: 50: *
-: 51: * Returns 0 on success, -errno on failure.
-: 52: */
-: 53:#ifdef ROMIO_HAVE_WORKING_AIO
-: 54:int ADIOI_NFS_aio(ADIO_File fd, void *buf, int len, ADIO_Offset offset,
-: 55: int wr, MPI_Request *request)
#####: 56:{
#####: 57: int err=-1, fd_sys;
-: 58: int error_code, this_errno;
-: 59:
-: 60: struct aiocb *aiocbp;
-: 61: ADIOI_AIO_Request *aio_req;
-: 62:
#####: 63: fd_sys = fd->fd_sys;
-: 64:
#####: 65: aio_req = (ADIOI_AIO_Request*)ADIOI_Calloc(sizeof(ADIOI_AIO_Request), 1);
#####: 66: aiocbp = (struct aiocb *) ADIOI_Calloc(sizeof(struct aiocb), 1);
#####: 67: aiocbp->aio_offset = offset;
#####: 68: aiocbp->aio_buf = buf;
#####: 69: aiocbp->aio_nbytes = len;
-: 70:
-: 71:#ifdef ROMIO_HAVE_STRUCT_AIOCB_WITH_AIO_WHENCE
-: 72: aiocbp->aio_whence = SEEK_SET;
-: 73:#endif
-: 74:#ifdef ROMIO_HAVE_STRUCT_AIOCB_WITH_AIO_FILDES
#####: 75: aiocbp->aio_fildes = fd_sys;
-: 76:#endif
-: 77:#ifdef ROMIO_HAVE_STRUCT_AIOCB_WITH_AIO_SIGEVENT
-: 78:# ifdef AIO_SIGNOTIFY_NONE
-: 79: aiocbp->aio_sigevent.sigev_notify = SIGEV_NONE;
-: 80:# endif
#####: 81: aiocbp->aio_sigevent.sigev_signo = 0;
-: 82:#endif
-: 83:#ifdef ROMIO_HAVE_STRUCT_AIOCB_WITH_AIO_REQPRIO
-: 84:# ifdef AIO_PRIO_DFL
-: 85: aiocbp->aio_reqprio = AIO_PRIO_DFL; /* not needed in DEC Unix 4.0 */
-: 86:# else
#####: 87: aiocbp->aio_reqprio = 0;
-: 88:# endif
-: 89:#endif
-: 90:
#####: 91: if (wr) ADIOI_WRITE_LOCK(fd, offset, SEEK_SET, len);
#####: 92: else ADIOI_READ_LOCK(fd, offset, SEEK_SET, len);
-: 93:
-: 94:#ifndef ROMIO_HAVE_AIO_CALLS_NEED_FILEDES
#####: 95: if (wr) err = aio_write(aiocbp);
#####: 96: else err = aio_read(aiocbp);
-: 97:#else
-: 98: /* Broken IBM interface */
-: 99: if (wr) err = aio_write(fd_sys, aiocbp);
-: 100: else err = aio_read(fd_sys, aiocbp);
-: 101:#endif
-: 102:
#####: 103: this_errno = errno;
#####: 104: ADIOI_UNLOCK(fd, offset, SEEK_SET, len);
-: 105:
#####: 106: if (err == -1) {
#####: 107: if (this_errno == EAGAIN) {
-: 108: /* exceeded the max. no. of outstanding requests.
-: 109: complete all previous async. requests and try again. */
#####: 110: ADIO_WriteContig(fd, buf, len, MPI_BYTE, ADIO_EXPLICIT_OFFSET,
-: 111: offset, NULL, &error_code);
#####: 112: MPIO_Completed_request_create(&fd, len, &error_code, request);
#####: 113: return 0;
-: 114: } else {
#####: 115: return -this_errno;
-: 116: }
-: 117: }
#####: 118: aio_req->aiocbp = aiocbp;
#####: 119: if (ADIOI_GEN_greq_class == 0) {
#####: 120: MPIX_Grequest_class_create(ADIOI_GEN_aio_query_fn,
-: 121: ADIOI_GEN_aio_free_fn, MPIU_Greq_cancel_fn,
-: 122: ADIOI_GEN_aio_poll_fn, ADIOI_GEN_aio_wait_fn,
-: 123: &ADIOI_GEN_greq_class);
-: 124: }
#####: 125: MPIX_Grequest_class_allocate(ADIOI_GEN_greq_class, aio_req, request);
#####: 126: memcpy(&(aio_req->req), request, sizeof(MPI_Request));
#####: 127: return 0;
-: 128:}
-: 129:#endif
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