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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5FDspace.c
* Jan 3 2008
* Quincey Koziol
*
* Purpose: Space allocation routines for the file driver code.
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#include "H5FDmodule.h" /* This source code file is part of the H5FD module */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5CXprivate.h" /* API Contexts */
#include "H5Eprivate.h" /* Error handling */
#include "H5Fprivate.h" /* File access */
#include "H5FDpkg.h" /* File Drivers */
#include "H5FDmulti.h" /* Usage-partitioned file family */
#include "H5FLprivate.h" /* Free lists */
/****************/
/* Local Macros */
/****************/
/* Define this to display information about file allocations */
/* #define H5FD_ALLOC_DEBUG */
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/* Declare a free list to manage the H5FD_free_t struct */
H5FL_DEFINE(H5FD_free_t);
/*-------------------------------------------------------------------------
* Function: H5FD__extend
*
* Purpose: Extend the EOA space of a file.
*
* NOTE: Returns absolute file offset
*
* Return: Success: The address of the previous EOA.
* Failure: The undefined address HADDR_UNDEF
*
* Programmer: Bill Wendling
* Wednesday, 04. December, 2002
*
*-------------------------------------------------------------------------
*/
static haddr_t
H5FD__extend(H5FD_t *file, H5FD_mem_t type, hsize_t size)
{
haddr_t eoa; /* Address of end-of-allocated space */
haddr_t ret_value = HADDR_UNDEF; /* Return value */
FUNC_ENTER_STATIC
/* check args */
HDassert(file);
HDassert(file->cls);
HDassert(type >= H5FD_MEM_DEFAULT && type < H5FD_MEM_NTYPES);
HDassert(size > 0);
/* Get current end-of-allocated space address */
eoa = file->cls->get_eoa(file, type);
/* Check for overflow when extending */
if (H5F_addr_overflow(eoa, size) || (eoa + size) > file->maxaddr)
HGOTO_ERROR(H5E_VFL, H5E_NOSPACE, HADDR_UNDEF, "file allocation request failed")
/* Set the [NOT aligned] address to return */
ret_value = eoa;
/* Extend the end-of-allocated space address */
eoa += size;
if (file->cls->set_eoa(file, type, eoa) < 0)
HGOTO_ERROR(H5E_VFL, H5E_NOSPACE, HADDR_UNDEF, "file allocation request failed")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD__extend() */
/*-------------------------------------------------------------------------
* Function: H5FD__alloc_real
*
* Purpose: Allocate space in the file with the VFD
* Note: the handling of alignment is moved up from each driver to
* this routine.
*
* Return: Success: The format address of the new file memory.
* Failure: The undefined address HADDR_UNDEF
*
* Programmer: Robb Matzke
* Wednesday, August 4, 1999
*
*-------------------------------------------------------------------------
*/
haddr_t
H5FD__alloc_real(H5FD_t *file, H5FD_mem_t type, hsize_t size, haddr_t *frag_addr, hsize_t *frag_size)
{
hsize_t orig_size = size; /* Original allocation size */
haddr_t eoa; /* Address of end-of-allocated space */
hsize_t extra; /* Extra space to allocate, to align request */
unsigned long flags = 0; /* Driver feature flags */
hbool_t use_alloc_size; /* Just pass alloc size to the driver */
haddr_t ret_value = HADDR_UNDEF; /* Return value */
FUNC_ENTER_PACKAGE
#ifdef H5FD_ALLOC_DEBUG
HDfprintf(stderr, "%s: type = %u, size = %" PRIuHSIZE "\n", FUNC, (unsigned)type, size);
#endif /* H5FD_ALLOC_DEBUG */
/* check args */
HDassert(file);
HDassert(file->cls);
HDassert(type >= H5FD_MEM_DEFAULT && type < H5FD_MEM_NTYPES);
HDassert(size > 0);
/* Check for query driver and call it */
if (file->cls->query)
(file->cls->query)(file, &flags);
/* Check for the driver feature flag */
use_alloc_size = flags & H5FD_FEAT_USE_ALLOC_SIZE;
/* Get current end-of-allocated space address */
eoa = file->cls->get_eoa(file, type);
/* Compute extra space to allocate, if this should be aligned */
extra = 0;
if (!file->paged_aggr && file->alignment > 1 && orig_size >= file->threshold) {
hsize_t mis_align; /* Amount EOA is misaligned */
/* Check for EOA already aligned */
if ((mis_align = (eoa % file->alignment)) > 0) {
extra = file->alignment - mis_align;
if (frag_addr)
*frag_addr = eoa - file->base_addr; /* adjust for file's base address */
if (frag_size)
*frag_size = extra;
} /* end if */
} /* end if */
/* Dispatch to driver `alloc' callback or extend the end-of-address marker */
/* For the multi/split driver: the size passed down to the alloc callback is the original size from
* H5FD_alloc() */
/* For all other drivers: the size passed down to the alloc callback is the size + [possibly] alignment
* size */
if (file->cls->alloc) {
ret_value = (file->cls->alloc)(file, type, H5CX_get_dxpl(), use_alloc_size ? size : size + extra);
if (!H5F_addr_defined(ret_value))
HGOTO_ERROR(H5E_VFL, H5E_NOSPACE, HADDR_UNDEF, "driver allocation request failed")
} /* end if */
else {
ret_value = H5FD__extend(file, type, size + extra);
if (!H5F_addr_defined(ret_value))
HGOTO_ERROR(H5E_VFL, H5E_NOSPACE, HADDR_UNDEF, "driver eoa update request failed")
} /* end else */
/* Set the [possibly aligned] address to return */
if (!use_alloc_size)
ret_value += extra;
/* Post-condition sanity check */
if (!file->paged_aggr && file->alignment > 1 && orig_size >= file->threshold)
HDassert(!(ret_value % file->alignment));
/* Convert absolute file offset to relative address */
ret_value -= file->base_addr;
done:
#ifdef H5FD_ALLOC_DEBUG
HDfprintf(stderr, "%s: ret_value = %" PRIuHADDR "\n", FUNC, ret_value);
#endif /* H5FD_ALLOC_DEBUG */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD__alloc_real() */
/*-------------------------------------------------------------------------
* Function: H5FD_alloc
*
* Purpose: Wrapper for H5FD_alloc, to make certain EOA changes are
* reflected in superblock.
*
* Note: When the metadata cache routines are updated to allow
* marking an entry dirty without a H5F_t*, this routine should
* be changed to take a H5F_super_t* directly.
*
* Return: Success: The format address of the new file memory.
* Failure: The undefined address HADDR_UNDEF
*
* Programmer: Quincey Koziol
* Friday, August 14, 2009
*
*-------------------------------------------------------------------------
*/
haddr_t
H5FD_alloc(H5FD_t *file, H5FD_mem_t type, H5F_t *f, hsize_t size, haddr_t *frag_addr, hsize_t *frag_size)
{
haddr_t ret_value = HADDR_UNDEF; /* Return value */
FUNC_ENTER_NOAPI(HADDR_UNDEF)
/* check args */
HDassert(file);
HDassert(file->cls);
HDassert(type >= H5FD_MEM_DEFAULT && type < H5FD_MEM_NTYPES);
HDassert(size > 0);
/* Call the real 'alloc' routine */
ret_value = H5FD__alloc_real(file, type, size, frag_addr, frag_size);
if (!H5F_addr_defined(ret_value))
HGOTO_ERROR(H5E_VFL, H5E_CANTALLOC, HADDR_UNDEF, "real 'alloc' request failed")
/* Mark EOA info dirty in cache, so change will get encoded */
if (H5F_eoa_dirty(f) < 0)
HGOTO_ERROR(H5E_VFL, H5E_CANTMARKDIRTY, HADDR_UNDEF, "unable to mark EOA info as dirty")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD_alloc() */
/*-------------------------------------------------------------------------
* Function: H5FD__free_real
*
* Purpose: Release space back to the VFD
*
* Return: Success: Non-negative
* Failure: Negative
*
* Programmer: Robb Matzke
* Wednesday, August 4, 1999
*
*-------------------------------------------------------------------------
*/
herr_t
H5FD__free_real(H5FD_t *file, H5FD_mem_t type, haddr_t addr, hsize_t size)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Check args */
HDassert(file);
HDassert(file->cls);
HDassert(type >= H5FD_MEM_DEFAULT && type < H5FD_MEM_NTYPES);
HDassert(size > 0);
#ifdef H5FD_ALLOC_DEBUG
HDfprintf(stderr, "%s: type = %u, addr = %" PRIuHADDR ", size = %" PRIuHSIZE "\n", FUNC, (unsigned)type,
addr, size);
#endif /* H5FD_ALLOC_DEBUG */
/* Sanity checking */
if (!H5F_addr_defined(addr))
HGOTO_ERROR(H5E_VFL, H5E_BADVALUE, FAIL, "invalid file offset")
/* Convert address to absolute file offset */
addr += file->base_addr;
/* More sanity checking */
if (addr > file->maxaddr || H5F_addr_overflow(addr, size) || (addr + size) > file->maxaddr)
HGOTO_ERROR(H5E_VFL, H5E_BADVALUE, FAIL, "invalid file free space region to free")
/* Check for file driver 'free' callback and call it if available */
if (file->cls->free) {
#ifdef H5FD_ALLOC_DEBUG
HDfprintf(stderr, "%s: Letting VFD free space\n", FUNC);
#endif /* H5FD_ALLOC_DEBUG */
if ((file->cls->free)(file, type, H5CX_get_dxpl(), addr, size) < 0)
HGOTO_ERROR(H5E_VFL, H5E_CANTFREE, FAIL, "driver free request failed")
} /* end if */
/* Check if this free block is at the end of file allocated space.
* Truncate it if this is true.
*/
else if (file->cls->get_eoa) {
haddr_t eoa;
eoa = file->cls->get_eoa(file, type);
#ifdef H5FD_ALLOC_DEBUG
HDfprintf(stderr, "%s: eoa = %" PRIuHADDR "\n", FUNC, eoa);
#endif /* H5FD_ALLOC_DEBUG */
if (eoa == (addr + size)) {
#ifdef H5FD_ALLOC_DEBUG
HDfprintf(stderr, "%s: Reducing file size to = %" PRIuHADDR "\n", FUNC, addr);
#endif /* H5FD_ALLOC_DEBUG */
if (file->cls->set_eoa(file, type, addr) < 0)
HGOTO_ERROR(H5E_VFL, H5E_CANTSET, FAIL, "set end of space allocation request failed")
} /* end if */
} /* end else-if */
else {
/* leak memory */
#ifdef H5FD_ALLOC_DEBUG
HDfprintf(stderr, "%s: LEAKED MEMORY!!! type = %u, addr = %" PRIuHADDR ", size = %" PRIuHSIZE "\n",
FUNC, (unsigned)type, addr, size);
#endif /* H5FD_ALLOC_DEBUG */
} /* end else */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD__free_real() */
/*-------------------------------------------------------------------------
* Function: H5FD_free
*
* Purpose: Wrapper for H5FD__free_real, to make certain EOA changes are
* reflected in superblock.
*
* Note: When the metadata cache routines are updated to allow
* marking an entry dirty without a H5F_t*, this routine should
* be changed to take a H5F_super_t* directly.
*
* Return: Success: Non-negative
* Failure: Negative
*
* Programmer: Quincey Koziol
* Friday, August 14, 2009
*
*-------------------------------------------------------------------------
*/
herr_t
H5FD_free(H5FD_t *file, H5FD_mem_t type, H5F_t *f, haddr_t addr, hsize_t size)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(FAIL)
/* Check args */
HDassert(file);
HDassert(file->cls);
HDassert(type >= H5FD_MEM_DEFAULT && type < H5FD_MEM_NTYPES);
HDassert(size > 0);
/* Call the real 'free' routine */
if (H5FD__free_real(file, type, addr, size) < 0)
HGOTO_ERROR(H5E_VFL, H5E_CANTFREE, FAIL, "real 'free' request failed")
/* Mark EOA info dirty in cache, so change will get encoded */
if (H5F_eoa_dirty(f) < 0)
HGOTO_ERROR(H5E_VFL, H5E_CANTMARKDIRTY, FAIL, "unable to mark EOA info as dirty")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD_free() */
/*-------------------------------------------------------------------------
* Function: H5FD_try_extend
*
* Purpose: Extend a block at the end of the file, if possible.
*
* Note: When the metadata cache routines are updated to allow
* marking an entry dirty without a H5F_t*, this routine should
* be changed to take a H5F_super_t* directly.
*
* Return: Success: TRUE(1) - Block was extended
* FALSE(0) - Block could not be extended
* Failure: FAIL
*
* Programmer: Quincey Koziol
* Thursday, 17. January, 2008
*
*-------------------------------------------------------------------------
*/
htri_t
H5FD_try_extend(H5FD_t *file, H5FD_mem_t type, H5F_t *f, haddr_t blk_end, hsize_t extra_requested)
{
haddr_t eoa; /* End of allocated space in file */
htri_t ret_value = FALSE; /* Return value */
FUNC_ENTER_NOAPI(FAIL)
/* check args */
HDassert(file);
HDassert(file->cls);
HDassert(type >= H5FD_MEM_DEFAULT && type < H5FD_MEM_NTYPES);
HDassert(extra_requested > 0);
HDassert(f);
/* Retrieve the end of the address space */
if (HADDR_UNDEF == (eoa = file->cls->get_eoa(file, type)))
HGOTO_ERROR(H5E_VFL, H5E_CANTGET, FAIL, "driver get_eoa request failed")
/* Adjust block end by base address of the file, to create absolute address */
blk_end += file->base_addr;
/* Check if the block is exactly at the end of the file */
if (H5F_addr_eq(blk_end, eoa)) {
/* Extend the object by extending the underlying file */
if (HADDR_UNDEF == H5FD__extend(file, type, extra_requested))
HGOTO_ERROR(H5E_VFL, H5E_CANTEXTEND, FAIL, "driver extend request failed")
/* Mark EOA info dirty in cache, so change will get encoded */
if (H5F_eoa_dirty(f) < 0)
HGOTO_ERROR(H5E_VFL, H5E_CANTMARKDIRTY, FAIL, "unable to mark EOA info as dirty")
/* Indicate success */
HGOTO_DONE(TRUE)
} /* end if */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FD_try_extend() */
|