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Diffstat (limited to 'src/H5Fio.c')
| -rw-r--r-- | src/H5Fio.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/H5Fio.c b/src/H5Fio.c new file mode 100644 index 0000000..1081a27 --- /dev/null +++ b/src/H5Fio.c @@ -0,0 +1,165 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * Copyright by The HDF Group. * + * Copyright by the Board of Trustees of the University of Illinois. * + * All rights reserved. * + * * + * This file is part of HDF5. The full HDF5 copyright notice, including * + * terms governing use, modification, and redistribution, is contained in * + * the files COPYING and Copyright.html. COPYING can be found at the root * + * of the source code distribution tree; Copyright.html can be found at the * + * root level of an installed copy of the electronic HDF5 document set and * + * is linked from the top-level documents page. It can also be found at * + * http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have * + * access to either file, you may request a copy from help@hdfgroup.org. * + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ + +/*------------------------------------------------------------------------- + * + * Created: H5Fio.c + * Jan 10 2008 + * Quincey Koziol <koziol@hdfgroup.org> + * + * Purpose: File I/O routines. + * + *------------------------------------------------------------------------- + */ + +/****************/ +/* Module Setup */ +/****************/ + +#define H5F_PACKAGE /*suppress error about including H5Fpkg */ + + +/***********/ +/* Headers */ +/***********/ +#include "H5private.h" /* Generic Functions */ +#include "H5Eprivate.h" /* Error handling */ +#include "H5Fpkg.h" /* File access */ +#include "H5FDprivate.h" /* File drivers */ + + +/****************/ +/* Local Macros */ +/****************/ + + +/******************/ +/* Local Typedefs */ +/******************/ + + +/********************/ +/* Package Typedefs */ +/********************/ + + +/********************/ +/* Local Prototypes */ +/********************/ + + +/*********************/ +/* Package Variables */ +/*********************/ + + +/*****************************/ +/* Library Private Variables */ +/*****************************/ + + +/*******************/ +/* Local Variables */ +/*******************/ + + + +/*------------------------------------------------------------------------- + * Function: H5F_block_read + * + * Purpose: Reads some data from a file/server/etc into a buffer. + * The data is contiguous. The address is relative to the base + * address for the file. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Robb Matzke + * matzke@llnl.gov + * Jul 10 1997 + * + *------------------------------------------------------------------------- + */ +herr_t +H5F_block_read(const H5F_t *f, H5FD_mem_t type, haddr_t addr, size_t size, + hid_t dxpl_id, void *buf/*out*/) +{ + htri_t accumulated; /* Whether the data was accepted by the metadata accumulator */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI(H5F_block_read, FAIL) + + HDassert(f); + HDassert(f->shared); + HDassert(buf); + + /* Check if this I/O can be satisfied by the metadata accumulator */ + if((accumulated = H5F_accum_read(f, dxpl_id, type, addr, size, buf)) < 0) + HGOTO_ERROR(H5E_IO, H5E_READERROR, FAIL, "read from metadata accumulator failed") + else if(accumulated == FALSE) { + /* Read the data */ + if(H5FD_read(f->shared->lf, dxpl_id, type, addr, size, buf) < 0) + HGOTO_ERROR(H5E_IO, H5E_READERROR, FAIL, "driver read request failed") + } /* end else */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5F_block_read() */ + + +/*------------------------------------------------------------------------- + * Function: H5F_block_write + * + * Purpose: Writes some data from memory to a file/server/etc. The + * data is contiguous. The address is relative to the base + * address. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Robb Matzke + * matzke@llnl.gov + * Jul 10 1997 + * + *------------------------------------------------------------------------- + */ +herr_t +H5F_block_write(const H5F_t *f, H5FD_mem_t type, haddr_t addr, size_t size, + hid_t dxpl_id, const void *buf) +{ + htri_t accumulated; /* Whether the data was accepted by the metadata accumulator */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI(H5F_block_write, FAIL) +#ifdef QAK +HDfprintf(stderr, "%s: write to addr = %a, size = %Zu\n", FUNC, addr, size); +#endif /* QAK */ + + HDassert(f); + HDassert(f->shared); + HDassert(f->intent & H5F_ACC_RDWR); + HDassert(buf); + + /* Check for accumulating metadata */ + if((accumulated = H5F_accum_write(f, dxpl_id, type, addr, size, buf)) < 0) + HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "write to metadata accumulator failed") + else if(accumulated == FALSE) { + /* Write the data */ + if(H5FD_write(f->shared->lf, dxpl_id, type, addr, size, buf) < 0) + HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "file write failed") + } /* end else */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5F_block_write() */ + |