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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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Purpose: Map access property list class routines
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#include "H5Pmodule.h" /* This source code file is part of the H5P module */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Mprivate.h" /* Maps */
#include "H5Eprivate.h" /* Error handling */
#include "H5Iprivate.h" /* IDs */
#include "H5Ppkg.h" /* Property lists */
/****************/
/* Local Macros */
/****************/
/* ========= Map Access properties ============ */
/* Definitions for key prefetch size */
#define H5M_ACS_KEY_PREFETCH_SIZE_SIZE sizeof(size_t)
#define H5M_ACS_KEY_PREFETCH_SIZE_DEF (size_t)(16 * 1024)
#define H5M_ACS_KEY_PREFETCH_SIZE_ENC H5P__encode_size_t
#define H5M_ACS_KEY_PREFETCH_SIZE_DEC H5P__decode_size_t
/* Definition for key prefetch buffer size */
#define H5M_ACS_KEY_ALLOC_SIZE_SIZE sizeof(size_t)
#define H5M_ACS_KEY_ALLOC_SIZE_DEF (size_t)(1024 * 1024)
#define H5M_ACS_KEY_ALLOC_SIZE_ENC H5P__encode_size_t
#define H5M_ACS_KEY_ALLOC_SIZE_DEC H5P__decode_size_t
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/* Property class callbacks */
static herr_t H5P__macc_reg_prop(H5P_genclass_t *pclass);
/*********************/
/* Package Variables */
/*********************/
/* Map access property list class library initialization object */
const H5P_libclass_t H5P_CLS_MACC[1] = {{
"map access", /* Class name for debugging */
H5P_TYPE_MAP_ACCESS, /* Class type */
&H5P_CLS_LINK_ACCESS_g, /* Parent class */
&H5P_CLS_MAP_ACCESS_g, /* Pointer to class */
&H5P_CLS_MAP_ACCESS_ID_g, /* Pointer to class ID */
&H5P_LST_MAP_ACCESS_ID_g, /* Pointer to default property list ID */
H5P__macc_reg_prop, /* Default property registration routine */
NULL, /* Class creation callback */
NULL, /* Class creation callback info */
NULL, /* Class copy callback */
NULL, /* Class copy callback info */
NULL, /* Class close callback */
NULL /* Class close callback info */
}};
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5P__macc_reg_prop
*
* Purpose: Register the map access property list class's
* properties
*
* Return: Non-negative on success/Negative on failure
*-------------------------------------------------------------------------
*/
static herr_t
H5P__macc_reg_prop(H5P_genclass_t *pclass)
{
size_t key_prefetch_size = H5M_ACS_KEY_PREFETCH_SIZE_DEF; /* Default key prefetch size for iteration */
size_t key_alloc_size =
H5M_ACS_KEY_ALLOC_SIZE_DEF; /* Default key prefetch allocation size for iteration */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Register the key prefetch size for iteration */
if (H5P__register_real(pclass, H5M_ACS_KEY_PREFETCH_SIZE_NAME, H5M_ACS_KEY_PREFETCH_SIZE_SIZE,
&key_prefetch_size, NULL, NULL, NULL, H5M_ACS_KEY_PREFETCH_SIZE_ENC,
H5M_ACS_KEY_PREFETCH_SIZE_DEC, NULL, NULL, NULL, NULL) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class");
/* Register the key prefetch allocation size for iteration */
if (H5P__register_real(pclass, H5M_ACS_KEY_ALLOC_SIZE_NAME, H5M_ACS_KEY_ALLOC_SIZE_SIZE, &key_alloc_size,
NULL, NULL, NULL, H5M_ACS_KEY_ALLOC_SIZE_ENC, H5M_ACS_KEY_ALLOC_SIZE_DEC, NULL,
NULL, NULL, NULL) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class");
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5P__macc_reg_prop() */
#ifdef H5_HAVE_MAP_API
/*-------------------------------------------------------------------------
* Function: H5Pset_map_iterate_hints
*
* Purpose: H5Pset_map_iterate_hints adjusts the behavior of
* H5Miterate when prefetching keys for iteration. The
* KEY_PREFETCH_SIZE parameter specifies the number of keys
* to prefetch at a time during iteration. The KEY_ALLOC_SIZE
* parameter specifies the initial size of the buffer
* allocated to hold these prefetched keys. If this buffer is
* too small it will be reallocated to a larger size, though
* this may result in an additional I/O.
*
* Move to DAOS VOL code? DSINC
*
* Return: Non-negative on success/Negative on failure
*-------------------------------------------------------------------------
*/
herr_t
H5Pset_map_iterate_hints(hid_t mapl_id, size_t key_prefetch_size, size_t key_alloc_size)
{
H5P_genplist_t *plist; /* Property list pointer */
herr_t ret_value = SUCCEED; /* return value */
FUNC_ENTER_API(FAIL)
H5TRACE3("e", "izz", mapl_id, key_prefetch_size, key_alloc_size);
/* Get the plist structure */
if (NULL == (plist = H5P_object_verify(mapl_id, H5P_MAP_ACCESS)))
HGOTO_ERROR(H5E_ID, H5E_BADID, FAIL, "can't find object for ID");
/* Set sizes */
if (H5P_set(plist, H5M_ACS_KEY_PREFETCH_SIZE_NAME, &key_prefetch_size) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set key prefetch size");
if (H5P_set(plist, H5M_ACS_KEY_ALLOC_SIZE_NAME, &key_alloc_size) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set key allocation size");
done:
FUNC_LEAVE_API(ret_value)
} /* end H5Pset_map_iterate_hints() */
/*-------------------------------------------------------------------------
* Function: H5Pget_map_iterate_hints
*
* Purpose: Returns the map iterate hints, KEY_PREFETCH_SIZE and
* KEY_ALLOC_SIZE, as set by H5Pset_map_iterate_hints.
*
* Return: Non-negative on success/Negative on failure
*-------------------------------------------------------------------------
*/
herr_t
H5Pget_map_iterate_hints(hid_t mapl_id, size_t *key_prefetch_size /*out*/, size_t *key_alloc_size /*out*/)
{
H5P_genplist_t *plist; /* Property list pointer */
herr_t ret_value = SUCCEED; /* return value */
FUNC_ENTER_API(FAIL)
H5TRACE3("e", "i*z*z", mapl_id, key_prefetch_size, key_alloc_size);
/* Get the plist structure */
if (NULL == (plist = H5P_object_verify(mapl_id, H5P_MAP_ACCESS)))
HGOTO_ERROR(H5E_ID, H5E_BADID, FAIL, "can't find object for ID");
/* Get the properties */
if (key_prefetch_size) {
if (H5P_get(plist, H5M_ACS_KEY_PREFETCH_SIZE_NAME, key_prefetch_size) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get key prefetch size");
} /* end if */
if (key_alloc_size) {
if (H5P_get(plist, H5M_ACS_KEY_ALLOC_SIZE_NAME, key_alloc_size) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get key allocation size");
} /* end if */
done:
FUNC_LEAVE_API(ret_value)
} /* end H5Pget_map_iterate_hints() */
#endif
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