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hdf5/src/H5SMcache.c
Sean McBride d7b40604ef
Fixed all clang-tidy bugprone-suspicious-string-compare warnings (#451) 
* Fixed all clang-tidy bugprone-suspicious-string-compare warnings

This change was generated entirely by clang-tidy itself.

* Reformat code with clang v10.0.1.

Co-authored-by: Larry Knox <lrknox@hdfgroup.org>
2021-03-10 12:42:35 -06:00

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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://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5SMcache.c
* Nov 13 2006
* James Laird
*
* Purpose: Implement shared message metadata cache methods.
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#include "H5SMmodule.h" /* This source code file is part of the H5SM module */
/***********/
/* Headers */
/***********/
#include "H5Eprivate.h" /* Error handling */
#include "H5Fprivate.h" /* File access */
#include "H5FLprivate.h" /* Free Lists */
#include "H5MFprivate.h" /* File memory management */
#include "H5MMprivate.h" /* Memory management */
#include "H5SMpkg.h" /* Shared object header messages */
#include "H5WBprivate.h" /* Wrapped Buffers */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Local Prototypes */
/********************/
/* Metadata cache (H5AC) callbacks */
static herr_t H5SM__cache_table_get_initial_load_size(void *udata, size_t *image_len);
static htri_t H5SM__cache_table_verify_chksum(const void *image_ptr, size_t len, void *udata_ptr);
static void * H5SM__cache_table_deserialize(const void *image, size_t len, void *udata, hbool_t *dirty);
static herr_t H5SM__cache_table_image_len(const void *thing, size_t *image_len);
static herr_t H5SM__cache_table_serialize(const H5F_t *f, void *image, size_t len, void *thing);
static herr_t H5SM__cache_table_free_icr(void *thing);
static herr_t H5SM__cache_list_get_initial_load_size(void *udata, size_t *image_len);
static htri_t H5SM__cache_list_verify_chksum(const void *image_ptr, size_t len, void *udata_ptr);
static void * H5SM__cache_list_deserialize(const void *image, size_t len, void *udata, hbool_t *dirty);
static herr_t H5SM__cache_list_image_len(const void *thing, size_t *image_len);
static herr_t H5SM__cache_list_serialize(const H5F_t *f, void *image, size_t len, void *thing);
static herr_t H5SM__cache_list_free_icr(void *thing);
/*********************/
/* Package Variables */
/*********************/
/* H5SM inherits cache-like properties from H5AC */
const H5AC_class_t H5AC_SOHM_TABLE[1] = {{
H5AC_SOHM_TABLE_ID, /* Metadata client ID */
"shared message table", /* Metadata client name (for debugging) */
H5FD_MEM_SOHM_TABLE, /* File space memory type for client */
H5AC__CLASS_NO_FLAGS_SET, /* Client class behavior flags */
H5SM__cache_table_get_initial_load_size, /* 'get_initial_load_size' callback */
NULL, /* 'get_final_load_size' callback */
H5SM__cache_table_verify_chksum, /* 'verify_chksum' callback */
H5SM__cache_table_deserialize, /* 'deserialize' callback */
H5SM__cache_table_image_len, /* 'image_len' callback */
NULL, /* 'pre_serialize' callback */
H5SM__cache_table_serialize, /* 'serialize' callback */
NULL, /* 'notify' callback */
H5SM__cache_table_free_icr, /* 'free_icr' callback */
NULL, /* 'fsf_size' callback */
}};
const H5AC_class_t H5AC_SOHM_LIST[1] = {{
H5AC_SOHM_LIST_ID, /* Metadata client ID */
"shared message list", /* Metadata client name (for debugging) */
H5FD_MEM_SOHM_TABLE, /* File space memory type for client */
H5AC__CLASS_NO_FLAGS_SET, /* Client class behavior flags */
H5SM__cache_list_get_initial_load_size, /* 'get_initial_load_size' callback */
NULL, /* 'get_final_load_size' callback */
H5SM__cache_list_verify_chksum, /* 'verify_chksum' callback */
H5SM__cache_list_deserialize, /* 'deserialize' callback */
H5SM__cache_list_image_len, /* 'image_len' callback */
NULL, /* 'pre_serialize' callback */
H5SM__cache_list_serialize, /* 'serialize' callback */
NULL, /* 'notify' callback */
H5SM__cache_list_free_icr, /* 'free_icr' callback */
NULL, /* 'fsf_size' callback */
}};
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5SM__cache_table_get_initial_load_size()
*
* Purpose: Return the size of the master table of Shared Object Header
* Message indexes on disk.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_table_get_initial_load_size(void *_udata, size_t *image_len)
{
const H5SM_table_cache_ud_t *udata = (const H5SM_table_cache_ud_t *)_udata; /* User data for callback */
FUNC_ENTER_STATIC_NOERR
/* Check arguments */
HDassert(udata);
HDassert(udata->f);
HDassert(image_len);
/* Set the image length size */
*image_len = H5SM_TABLE_SIZE(udata->f);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM__cache_table_get_initial_load_size() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_table_verify_chksum
*
* Purpose: Verify the computed checksum of the data structure is the
* same as the stored chksum.
*
* Return: Success: TRUE/FALSE
* Failure: Negative
*
* Programmer: Vailin Choi; Aug 2015
*
*-------------------------------------------------------------------------
*/
htri_t
H5SM__cache_table_verify_chksum(const void *_image, size_t len, void H5_ATTR_UNUSED *_udata)
{
const uint8_t *image = (const uint8_t *)_image; /* Pointer into raw data buffer */
uint32_t stored_chksum; /* Stored metadata checksum value */
uint32_t computed_chksum; /* Computed metadata checksum value */
htri_t ret_value = TRUE; /* Return value */
FUNC_ENTER_STATIC_NOERR
/* Check arguments */
HDassert(image);
/* Get stored and computed checksums */
H5F_get_checksums(image, len, &stored_chksum, &computed_chksum);
if (stored_chksum != computed_chksum)
ret_value = FALSE;
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM__cache_table_verify_chksum() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_table_deserialize
*
* Purpose: Given a buffer containing the on disk representation of the
* master table of Shared Object Header Message indexes, deserialize
* the table, copy the contents into a newly allocated instance of
* H5SM_master_table_t, and return a pointer to the new instance.
*
* Return: Success: Pointer to in core representation
* Failure: NULL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static void *
H5SM__cache_table_deserialize(const void *_image, size_t H5_ATTR_NDEBUG_UNUSED len, void *_udata,
hbool_t H5_ATTR_UNUSED *dirty)
{
H5F_t * f; /* File pointer -- from user data */
H5SM_master_table_t * table = NULL; /* Shared message table that we deserializing */
H5SM_table_cache_ud_t *udata = (H5SM_table_cache_ud_t *)_udata; /* Pointer to user data */
const uint8_t * image = (const uint8_t *)_image; /* Pointer into input buffer */
uint32_t stored_chksum; /* Stored metadata checksum value */
size_t u; /* Counter variable for index headers */
void * ret_value = NULL; /* Return value */
FUNC_ENTER_STATIC
/* Check arguments */
HDassert(image);
HDassert(len > 0);
HDassert(udata);
HDassert(udata->f);
f = udata->f;
HDassert(dirty);
/* Verify that we're reading version 0 of the table; this is the only
* version defined so far.
*/
HDassert(H5F_SOHM_VERS(f) == HDF5_SHAREDHEADER_VERSION);
/* Allocate space for the master table in memory */
if (NULL == (table = H5FL_CALLOC(H5SM_master_table_t)))
HGOTO_ERROR(H5E_SOHM, H5E_NOSPACE, NULL, "memory allocation failed")
/* Read number of indexes and version from file superblock */
table->num_indexes = H5F_SOHM_NINDEXES(f);
HDassert(table->num_indexes > 0);
/* Compute the size of the SOHM table header on disk. This is the "table"
* itself plus each index within the table
*/
table->table_size = H5SM_TABLE_SIZE(f);
HDassert(table->table_size == len);
/* Check magic number */
if (HDmemcmp(image, H5SM_TABLE_MAGIC, (size_t)H5_SIZEOF_MAGIC) != 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTLOAD, NULL, "bad SOHM table signature")
image += H5_SIZEOF_MAGIC;
/* Allocate space for the index headers in memory*/
if (NULL == (table->indexes =
(H5SM_index_header_t *)H5FL_ARR_MALLOC(H5SM_index_header_t, (size_t)table->num_indexes)))
HGOTO_ERROR(H5E_SOHM, H5E_NOSPACE, NULL, "memory allocation failed for SOHM indexes")
/* Read in the index headers */
for (u = 0; u < table->num_indexes; ++u) {
/* Verify correct version of index list */
if (H5SM_LIST_VERSION != *image++)
HGOTO_ERROR(H5E_SOHM, H5E_VERSION, NULL, "bad shared message list version number")
/* Type of the index (list or B-tree) */
table->indexes[u].index_type = (H5SM_index_type_t)*image++;
/* Type of messages in the index */
UINT16DECODE(image, table->indexes[u].mesg_types);
/* Minimum size of message to share */
UINT32DECODE(image, table->indexes[u].min_mesg_size);
/* List cutoff; fewer than this number and index becomes a list */
UINT16DECODE(image, table->indexes[u].list_max);
/* B-tree cutoff; more than this number and index becomes a B-tree */
UINT16DECODE(image, table->indexes[u].btree_min);
/* Number of messages shared */
UINT16DECODE(image, table->indexes[u].num_messages);
/* Address of the actual index */
H5F_addr_decode(f, &image, &(table->indexes[u].index_addr));
/* Address of the index's heap */
H5F_addr_decode(f, &image, &(table->indexes[u].heap_addr));
/* Compute the size of a list index for this SOHM index */
table->indexes[u].list_size = H5SM_LIST_SIZE(f, table->indexes[u].list_max);
} /* end for */
/* checksum verification already done in verify_chksum cb */
/* Read in checksum */
UINT32DECODE(image, stored_chksum);
/* Sanity check */
HDassert((size_t)(image - (const uint8_t *)_image) == table->table_size);
/* Set return value */
ret_value = table;
done:
if (!ret_value && table)
if (H5SM__table_free(table) < 0)
HDONE_ERROR(H5E_SOHM, H5E_CANTFREE, NULL, "unable to destroy sohm table")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM__cache_table_deserialize() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_table_image_len
*
* Purpose: Compute the size in bytes of the specified instance of
* H5SM_master_table_t on disk, and return it in *image_len.
* On failure, the value of *image_len is undefined.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_table_image_len(const void *_thing, size_t *image_len)
{
const H5SM_master_table_t *table =
(const H5SM_master_table_t *)_thing; /* Shared message table to query */
FUNC_ENTER_STATIC_NOERR
/* Check arguments */
HDassert(table);
HDassert(table->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
HDassert(table->cache_info.type == H5AC_SOHM_TABLE);
HDassert(image_len);
*image_len = table->table_size;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM__cache_table_image_len() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_table_serialize
*
* Purpose: Serialize the contents of the supplied shared message table, and
* load this data into the supplied buffer.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_table_serialize(const H5F_t *f, void *_image, size_t H5_ATTR_NDEBUG_UNUSED len, void *_thing)
{
H5SM_master_table_t *table = (H5SM_master_table_t *)_thing; /* Shared message table to encode */
uint8_t * image = (uint8_t *)_image; /* Pointer into raw data buffer */
uint32_t computed_chksum; /* Computed metadata checksum value */
size_t u; /* Counter variable */
FUNC_ENTER_STATIC_NOERR
/* Check arguments */
HDassert(f);
HDassert(image);
HDassert(table);
HDassert(table->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
HDassert(table->cache_info.type == H5AC_SOHM_TABLE);
HDassert(table->table_size == len);
/* Verify that we're writing version 0 of the table; this is the only
* version defined so far.
*/
HDassert(H5F_SOHM_VERS(f) == HDF5_SHAREDHEADER_VERSION);
/* Encode magic number */
H5MM_memcpy(image, H5SM_TABLE_MAGIC, (size_t)H5_SIZEOF_MAGIC);
image += H5_SIZEOF_MAGIC;
/* Encode each index header */
for (u = 0; u < table->num_indexes; ++u) {
/* Version for this list */
*image++ = H5SM_LIST_VERSION;
/* Is message index a list or a B-tree? */
*image++ = (uint8_t)table->indexes[u].index_type;
/* Type of messages in the index */
UINT16ENCODE(image, table->indexes[u].mesg_types);
/* Minimum size of message to share */
UINT32ENCODE(image, table->indexes[u].min_mesg_size);
/* List cutoff; fewer than this number and index becomes a list */
UINT16ENCODE(image, table->indexes[u].list_max);
/* B-tree cutoff; more than this number and index becomes a B-tree */
UINT16ENCODE(image, table->indexes[u].btree_min);
/* Number of messages shared */
UINT16ENCODE(image, table->indexes[u].num_messages);
/* Address of the actual index */
H5F_addr_encode(f, &image, table->indexes[u].index_addr);
/* Address of the index's heap */
H5F_addr_encode(f, &image, table->indexes[u].heap_addr);
} /* end for */
/* Compute checksum on buffer */
computed_chksum = H5_checksum_metadata(_image, (table->table_size - H5SM_SIZEOF_CHECKSUM), 0);
UINT32ENCODE(image, computed_chksum);
/* sanity check */
HDassert((size_t)(image - ((uint8_t *)_image)) == table->table_size);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM__cache_table_serialize() */
/*****************************************/
/* no H5SM_cache_table_notify() function */
/*****************************************/
/*-------------------------------------------------------------------------
* Function: H5SM__cache_table_free_icr
*
* Purpose: Free memory used by the SOHM table.
*
* Note: The metadata cache sets the object's cache_info.magic to
* H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC before calling a free_icr
* callback (checked in assert).
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_table_free_icr(void *_thing)
{
H5SM_master_table_t *table = (H5SM_master_table_t *)_thing; /* Shared message table to release */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_STATIC
/* Check arguments */
HDassert(table);
HDassert(table->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC);
HDassert(table->cache_info.type == H5AC_SOHM_TABLE);
/* Destroy Shared Object Header Message table */
if (H5SM__table_free(table) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTRELEASE, FAIL, "unable to free shared message table")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_cache_table_free_icr() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_list_get_initial_load_size()
*
* Purpose: Return the on disk size of list of SOHM messages. In this case,
* we simply look up the size in the user data, and return that value
* in *image_len.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_list_get_initial_load_size(void *_udata, size_t *image_len)
{
const H5SM_list_cache_ud_t *udata = (const H5SM_list_cache_ud_t *)_udata; /* User data for callback */
FUNC_ENTER_STATIC_NOERR
/* Check arguments */
HDassert(udata);
HDassert(udata->header);
HDassert(udata->header->list_size > 0);
HDassert(image_len);
/* Set the image length size */
*image_len = udata->header->list_size;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM__cache_list_get_initial_load_size() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_list_verify_chksum
*
* Purpose: Verify the computed checksum of the data structure is the
* same as the stored chksum.
*
* Return: Success: TRUE/FALSE
* Failure: Negative
*
* Programmer: Vailin Choi; Aug 2015
*
*-------------------------------------------------------------------------
*/
htri_t
H5SM__cache_list_verify_chksum(const void *_image, size_t H5_ATTR_UNUSED len, void *_udata)
{
const uint8_t * image = (const uint8_t *)_image; /* Pointer into raw data buffer */
H5SM_list_cache_ud_t *udata = (H5SM_list_cache_ud_t *)_udata; /* User data for callback */
size_t chk_size; /* Exact size of the node with checksum at the end */
uint32_t stored_chksum; /* Stored metadata checksum value */
uint32_t computed_chksum; /* Computed metadata checksum value */
htri_t ret_value = TRUE; /* Return value */
FUNC_ENTER_STATIC_NOERR
/* Check arguments */
HDassert(image);
HDassert(udata);
/* Exact size with checksum at the end */
chk_size = H5SM_LIST_SIZE(udata->f, udata->header->num_messages);
/* Get stored and computed checksums */
H5F_get_checksums(image, chk_size, &stored_chksum, &computed_chksum);
if (stored_chksum != computed_chksum)
ret_value = FALSE;
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM__cache_list_verify_chksum() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_list_deserialize
*
* Purpose: Given a buffer containing the on disk image of a list of
* SOHM message, deserialize the list, load it into a newly allocated
* instance of H5SM_list_t, and return a pointer to same.
*
* Return: Success: Pointer to in core representation
* Failure: NULL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static void *
H5SM__cache_list_deserialize(const void *_image, size_t H5_ATTR_NDEBUG_UNUSED len, void *_udata,
hbool_t H5_ATTR_UNUSED *dirty)
{
H5SM_list_t * list = NULL; /* The SOHM list being read in */
H5SM_list_cache_ud_t *udata = (H5SM_list_cache_ud_t *)_udata; /* User data for callback */
H5SM_bt2_ctx_t ctx; /* Message encoding context */
const uint8_t * image = (const uint8_t *)_image; /* Pointer into input buffer */
uint32_t stored_chksum; /* Stored metadata checksum value */
size_t u; /* Counter variable for messages in list */
void * ret_value = NULL; /* Return value */
FUNC_ENTER_STATIC
/* Check arguments */
HDassert(image);
HDassert(len > 0);
HDassert(udata);
HDassert(udata->header);
HDassert(udata->header->list_size == len);
HDassert(dirty);
/* Allocate space for the SOHM list data structure */
if (NULL == (list = H5FL_MALLOC(H5SM_list_t)))
HGOTO_ERROR(H5E_SOHM, H5E_NOSPACE, NULL, "memory allocation failed")
HDmemset(&list->cache_info, 0, sizeof(H5AC_info_t));
/* Allocate list in memory as an array*/
if (NULL == (list->messages = (H5SM_sohm_t *)H5FL_ARR_MALLOC(H5SM_sohm_t, udata->header->list_max)))
HGOTO_ERROR(H5E_SOHM, H5E_NOSPACE, NULL, "file allocation failed for SOHM list")
list->header = udata->header;
/* Check magic number */
if (HDmemcmp(image, H5SM_LIST_MAGIC, (size_t)H5_SIZEOF_MAGIC) != 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTLOAD, NULL, "bad SOHM list signature")
image += H5_SIZEOF_MAGIC;
/* Read messages into the list array */
ctx.sizeof_addr = H5F_SIZEOF_ADDR(udata->f);
for (u = 0; u < udata->header->num_messages; u++) {
if (H5SM__message_decode(image, &(list->messages[u]), &ctx) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTLOAD, NULL, "can't decode shared message")
image += H5SM_SOHM_ENTRY_SIZE(udata->f);
} /* end for */
/* checksum verification already done in verify_chksum cb */
/* Read in checksum */
UINT32DECODE(image, stored_chksum);
/* Sanity check */
HDassert((size_t)(image - (const uint8_t *)_image) <= udata->header->list_size);
/* Initialize the rest of the array */
for (u = udata->header->num_messages; u < udata->header->list_max; u++)
list->messages[u].location = H5SM_NO_LOC;
/* Set return value */
ret_value = list;
done:
if (!ret_value && list) {
if (list->messages)
list->messages = H5FL_ARR_FREE(H5SM_sohm_t, list->messages);
list = H5FL_FREE(H5SM_list_t, list);
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM__cache_list_deserialize() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_list_image_len
*
* Purpose: Get the size of the shared message list on disk.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_list_image_len(const void *_thing, size_t *image_len)
{
const H5SM_list_t *list = (const H5SM_list_t *)_thing; /* Shared message list to query */
FUNC_ENTER_STATIC_NOERR
/* Check arguments */
HDassert(list);
HDassert(list->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
HDassert(list->cache_info.type == H5AC_SOHM_LIST);
HDassert(list->header);
HDassert(image_len);
*image_len = list->header->list_size;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM__cache_list_image_len() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_list_serialize
*
* Purpose: Serialize the contents of the supplied shared message list, and
* load this data into the supplied buffer.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_list_serialize(const H5F_t *f, void *_image, size_t H5_ATTR_NDEBUG_UNUSED len, void *_thing)
{
H5SM_list_t * list = (H5SM_list_t *)_thing; /* Instance being serialized */
H5SM_bt2_ctx_t ctx; /* Message encoding context */
uint8_t * image = (uint8_t *)_image; /* Pointer into raw data buffer */
uint32_t computed_chksum; /* Computed metadata checksum value */
size_t mesgs_serialized; /* Number of messages serialized */
size_t u; /* Local index variable */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_STATIC
/* Check arguments */
HDassert(f);
HDassert(image);
HDassert(list);
HDassert(list->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
HDassert(list->cache_info.type == H5AC_SOHM_LIST);
HDassert(list->header);
HDassert(list->header->list_size == len);
/* Encode magic number */
H5MM_memcpy(image, H5SM_LIST_MAGIC, (size_t)H5_SIZEOF_MAGIC);
image += H5_SIZEOF_MAGIC;
/* serialize messages from the messages array */
mesgs_serialized = 0;
ctx.sizeof_addr = H5F_SIZEOF_ADDR(f);
for (u = 0; ((u < list->header->list_max) && (mesgs_serialized < list->header->num_messages)); u++) {
if (list->messages[u].location != H5SM_NO_LOC) {
if (H5SM__message_encode(image, &(list->messages[u]), &ctx) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTFLUSH, FAIL, "unable to serialize shared message")
image += H5SM_SOHM_ENTRY_SIZE(f);
++mesgs_serialized;
} /* end if */
} /* end for */
HDassert(mesgs_serialized == list->header->num_messages);
/* Compute checksum on buffer */
computed_chksum = H5_checksum_metadata(_image, (size_t)(image - (uint8_t *)_image), 0);
UINT32ENCODE(image, computed_chksum);
/* sanity check */
HDassert((size_t)(image - (uint8_t *)_image) <= list->header->list_size);
/* Clear memory */
HDmemset(image, 0, (list->header->list_size - (size_t)(image - (uint8_t *)_image)));
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM__cache_list_serialize() */
/****************************************/
/* no H5SM_cache_list_notify() function */
/****************************************/
/*-------------------------------------------------------------------------
* Function: H5SM__cache_list_free_icr
*
* Purpose: Free all memory used by the list.
*
* Note: The metadata cache sets the object's cache_info.magic to
* H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC before calling a free_icr
* callback (checked in assert).
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_list_free_icr(void *_thing)
{
H5SM_list_t *list = (H5SM_list_t *)_thing; /* Shared message list to release */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_STATIC
/* Check arguments */
HDassert(list);
HDassert(list->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC);
HDassert(list->cache_info.type == H5AC_SOHM_LIST);
/* Destroy Shared Object Header Message list */
if (H5SM__list_free(list) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTRELEASE, FAIL, "unable to free shared message list")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O_cache_list_free_icr() */
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