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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
* 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 */
/****************/
#include "H5Fmodule.h" /* This source code file is part of the H5F module */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5Fpkg.h" /* File access */
#include "H5FDprivate.h" /* File drivers */
#include "H5Iprivate.h" /* IDs */
#include "H5PBprivate.h" /* Page Buffer */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5F_shared_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
*-------------------------------------------------------------------------
*/
herr_t
H5F_shared_block_read(H5F_shared_t *f_sh, H5FD_mem_t type, haddr_t addr, size_t size, void *buf/*out*/)
{
H5FD_mem_t map_type; /* Mapped memory type */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(FAIL)
/* Sanity checks */
HDassert(f_sh);
HDassert(buf);
HDassert(H5F_addr_defined(addr));
/* Check for attempting I/O on 'temporary' file address */
if(H5F_addr_le(f_sh->tmp_addr, (addr + size)))
HGOTO_ERROR(H5E_IO, H5E_BADRANGE, FAIL, "attempting I/O in temporary file space")
/* Treat global heap as raw data */
map_type = (type == H5FD_MEM_GHEAP) ? H5FD_MEM_DRAW : type;
/* Pass through page buffer layer */
if(H5PB_read(f_sh, map_type, addr, size, buf) < 0)
HGOTO_ERROR(H5E_IO, H5E_READERROR, FAIL, "read through page buffer failed")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5F_shared_block_read() */
/*-------------------------------------------------------------------------
* 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
*-------------------------------------------------------------------------
*/
herr_t
H5F_block_read(H5F_t *f, H5FD_mem_t type, haddr_t addr, size_t size, void *buf/*out*/)
{
return H5F_shared_block_read(f->shared, type, addr, size, buf);
} /* end H5F_block_read() */
/*-------------------------------------------------------------------------
* Function: H5F_shared_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
*-------------------------------------------------------------------------
*/
herr_t
H5F_shared_block_write(H5F_shared_t *f_sh, H5FD_mem_t type, haddr_t addr, size_t size, const void *buf)
{
H5FD_mem_t map_type; /* Mapped memory type */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(FAIL)
/* Sanity checks */
HDassert(f_sh);
HDassert(H5F_SHARED_INTENT(f_sh) & H5F_ACC_RDWR);
HDassert(buf);
HDassert(H5F_addr_defined(addr));
/* Check for attempting I/O on 'temporary' file address */
if(H5F_addr_le(f_sh->tmp_addr, (addr + size)))
HGOTO_ERROR(H5E_IO, H5E_BADRANGE, FAIL, "attempting I/O in temporary file space")
/* Treat global heap as raw data */
map_type = (type == H5FD_MEM_GHEAP) ? H5FD_MEM_DRAW : type;
/* Pass through page buffer layer */
if(H5PB_write(f_sh, map_type, addr, size, buf) < 0)
HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "write through page buffer failed")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5F_shared_block_write() */
/*-------------------------------------------------------------------------
* 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
*-------------------------------------------------------------------------
*/
herr_t
H5F_block_write(H5F_t *f, H5FD_mem_t type, haddr_t addr, size_t size, const void *buf)
{
return H5F_shared_block_write(f->shared, type, addr, size, buf);
} /* end H5F_block_write() */
/*-------------------------------------------------------------------------
* Function: H5F_flush_tagged_metadata
*
* Purpose: Flushes metadata with specified tag in the metadata cache
* to disk.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Mike McGreevy
* September 9, 2010
*
*-------------------------------------------------------------------------
*/
herr_t
H5F_flush_tagged_metadata(H5F_t *f, haddr_t tag)
{
herr_t ret_value = SUCCEED;
FUNC_ENTER_NOAPI(FAIL)
/* Use tag to search for and flush associated metadata */
if(H5AC_flush_tagged_metadata(f, tag) < 0)
HGOTO_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "unable to flush tagged metadata")
/* Flush and reset the accumulator */
if(H5F__accum_reset(f->shared, TRUE) < 0)
HGOTO_ERROR(H5E_IO, H5E_CANTRESET, FAIL, "can't reset accumulator")
/* Flush file buffers to disk. */
if(H5FD_flush(f->shared->lf, FALSE) < 0)
HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "low level flush failed")
done:
FUNC_LEAVE_NOAPI(ret_value);
} /* end H5F_flush_tagged_metadata */
/*-------------------------------------------------------------------------
* Function: H5F_evict_tagged_metadata
*
* Purpose: Evicts metadata from the cache with specified tag.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Mike McGreevy
* September 9, 2010
*
*-------------------------------------------------------------------------
*/
herr_t
H5F_evict_tagged_metadata(H5F_t *f, haddr_t tag)
{
herr_t ret_value = SUCCEED;
FUNC_ENTER_NOAPI(FAIL)
/* Evict the object's metadata */
if(H5AC_evict_tagged_metadata(f, tag, TRUE) < 0)
HGOTO_ERROR(H5E_CACHE, H5E_CANTEXPUNGE, FAIL, "unable to evict tagged metadata")
done:
FUNC_LEAVE_NOAPI(ret_value);
} /* end H5F_evict_tagged_metadata */
/*-------------------------------------------------------------------------
* Function: H5F__evict_cache_entries
*
* Purpose: To evict all cache entries except the pinned superblock entry
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Vailin Choi
* Dec 2013
*
*-------------------------------------------------------------------------
*/
herr_t
H5F__evict_cache_entries(H5F_t *f)
{
herr_t ret_value = SUCCEED;
FUNC_ENTER_PACKAGE
HDassert(f);
HDassert(f->shared);
/* Evict all except pinned entries in the cache */
if(H5AC_evict(f) < 0)
HGOTO_ERROR(H5E_CACHE, H5E_CANTEXPUNGE, FAIL, "unable to evict all except pinned entries")
#ifndef NDEBUG
{
unsigned status = 0;
uint32_t cur_num_entries;
/* Retrieve status of the superblock */
if(H5AC_get_entry_status(f, (haddr_t)0, &status) < 0)
HGOTO_ERROR(H5E_HEAP, H5E_CANTGET, FAIL, "unable to get entry status")
/* Verify status of the superblock entry in the cache */
if(!(status & H5AC_ES__IN_CACHE) || !(status & H5AC_ES__IS_PINNED))
HGOTO_ERROR(H5E_HEAP, H5E_CANTGET, FAIL, "unable to get entry status")
/* Get the number of cache entries */
if(H5AC_get_cache_size(f->shared->cache, NULL, NULL, NULL, &cur_num_entries) < 0)
HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "H5AC_get_cache_size() failed.")
/* Should be the only one left in the cache (the superblock) */
if(cur_num_entries != 1)
HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "number of cache entries is not correct")
}
#endif /* NDEBUG */
done:
FUNC_LEAVE_NOAPI(ret_value);
} /* end H5F__evict_cache_entries() */
/*-------------------------------------------------------------------------
* Function: H5F_get_checksums
*
* Purpose: Decode checksum stored in the buffer
* Calculate checksum for the data in the buffer
*
* Note: Assumes that the checksum is the last data in the buffer
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Vailin Choi
* Sept 2013
*
*-------------------------------------------------------------------------
*/
herr_t
H5F_get_checksums(const uint8_t *buf, size_t buf_size, uint32_t *s_chksum/*out*/, uint32_t *c_chksum/*out*/)
{
FUNC_ENTER_NOAPI_NOINIT_NOERR
/* Check arguments */
HDassert(buf);
HDassert(buf_size);
/* Return the stored checksum */
if(s_chksum) {
const uint8_t *chk_p; /* Pointer into raw data buffer */
/* Offset to the checksum in the buffer */
chk_p = buf + buf_size - H5_SIZEOF_CHKSUM;
/* Decode the checksum stored in the buffer */
UINT32DECODE(chk_p, *s_chksum);
} /* end if */
/* Return the computed checksum for the buffer */
if(c_chksum)
*c_chksum = H5_checksum_metadata(buf, buf_size - H5_SIZEOF_CHKSUM, 0);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5F_get_chksums() */
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