Created internal functions for a couple of H5F calls.

This commit is contained in:
Dana Robinson 2018-03-30 01:11:19 -07:00
parent 73acad2919
commit b8f56d22df
3 changed files with 334 additions and 248 deletions

262
src/H5F.c
View File

@ -1260,82 +1260,23 @@ done:
herr_t
H5Fget_metadata_read_retry_info(hid_t file_id, H5F_retry_info_t *info)
{
H5F_t *file; /* File object for file ID */
unsigned i, j; /* Local index variable */
size_t tot_size; /* Size of each retries[i] */
herr_t ret_value = SUCCEED; /* Return value */
H5F_t *file; /* File object for file ID */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE2("e", "i*x", file_id, info);
/* Check args */
if(!info)
if (!info)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no info struct")
/* Get the file pointer */
if(NULL == (file = (H5F_t *)H5I_object_verify(file_id, H5I_FILE)))
if (NULL == (file = (H5F_t *)H5I_object_verify(file_id, H5I_FILE)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "not a file ID")
/* Copy the # of bins for "retries" array */
info->nbins = file->shared->retries_nbins;
/* Initialize the array of "retries" */
HDmemset(info->retries, 0, sizeof(info->retries));
/* Return if there are no bins -- no retries */
if(!info->nbins)
HGOTO_DONE(SUCCEED);
/* Calculate size for each retries[i] */
tot_size = info->nbins * sizeof(uint32_t);
/* Map and copy information to info's retries for metadata items with tracking for read retries */
j = 0;
for(i = 0; i < H5AC_NTYPES; i++) {
switch(i) {
case H5AC_OHDR_ID:
case H5AC_OHDR_CHK_ID:
case H5AC_BT2_HDR_ID:
case H5AC_BT2_INT_ID:
case H5AC_BT2_LEAF_ID:
case H5AC_FHEAP_HDR_ID:
case H5AC_FHEAP_DBLOCK_ID:
case H5AC_FHEAP_IBLOCK_ID:
case H5AC_FSPACE_HDR_ID:
case H5AC_FSPACE_SINFO_ID:
case H5AC_SOHM_TABLE_ID:
case H5AC_SOHM_LIST_ID:
case H5AC_EARRAY_HDR_ID:
case H5AC_EARRAY_IBLOCK_ID:
case H5AC_EARRAY_SBLOCK_ID:
case H5AC_EARRAY_DBLOCK_ID:
case H5AC_EARRAY_DBLK_PAGE_ID:
case H5AC_FARRAY_HDR_ID:
case H5AC_FARRAY_DBLOCK_ID:
case H5AC_FARRAY_DBLK_PAGE_ID:
case H5AC_SUPERBLOCK_ID:
HDassert(j < H5F_NUM_METADATA_READ_RETRY_TYPES);
if(file->shared->retries[i] != NULL) {
/* Allocate memory for retries[i]
*
* This memory should be released by the user with
* the H5free_memory() call.
*/
if(NULL == (info->retries[j] = (uint32_t *)H5MM_malloc(tot_size)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed")
/* Copy the information */
HDmemcpy(info->retries[j], file->shared->retries[i], tot_size);
} /* end if */
/* Increment location in info->retries[] array */
j++;
break;
default:
break;
} /* end switch */
} /* end for */
/* Get the retry info */
if (H5F_get_metadata_read_retry_info(file, info) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "can't get metadata read retry info")
done:
FUNC_LEAVE_API(ret_value)
@ -1446,196 +1387,21 @@ done:
herr_t
H5Fstart_swmr_write(hid_t file_id)
{
hbool_t ci_load = FALSE; /* whether MDC ci load requested */
hbool_t ci_write = FALSE; /* whether MDC CI write requested */
H5F_t *file = NULL; /* File info */
size_t grp_dset_count=0; /* # of open objects: groups & datasets */
size_t nt_attr_count=0; /* # of opened named datatypes + opened attributes */
hid_t *obj_ids=NULL; /* List of ids */
H5G_loc_t *obj_glocs=NULL; /* Group location of the object */
H5O_loc_t *obj_olocs=NULL; /* Object location */
H5G_name_t *obj_paths=NULL; /* Group hierarchy path */
size_t u; /* Local index variable */
hbool_t setup = FALSE; /* Boolean flag to indicate whether SWMR setting is enabled */
H5F_io_info2_t fio_info; /* I/O info for operation */
herr_t ret_value = SUCCEED; /* Return value */
H5F_t *file = NULL; /* File info */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE1("e", "i", file_id);
/* check args */
if(NULL == (file = (H5F_t *)H5I_object_verify(file_id, H5I_FILE)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file")
if (NULL == (file = (H5F_t *)H5I_object_verify(file_id, H5I_FILE)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "hid_t identifier is not a file ID")
/* Should have write permission */
if((H5F_INTENT(file) & H5F_ACC_RDWR) == 0)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "no write intent on file")
if(file->shared->sblock->super_vers < HDF5_SUPERBLOCK_VERSION_3)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "file superblock version should be at least 3")
HDassert((file->shared->low_bound == H5F_LIBVER_V110) && (file->shared->high_bound == H5F_LIBVER_V110));
/* Should not be marked for SWMR writing mode already */
if(file->shared->sblock->status_flags & H5F_SUPER_SWMR_WRITE_ACCESS)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "file already in SWMR writing mode")
HDassert(file->shared->sblock->status_flags & H5F_SUPER_WRITE_ACCESS);
/* Check to see if cache image is enabled. Fail if so */
if(H5C_cache_image_status(file, &ci_load, &ci_write) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't get MDC cache image status")
if(ci_load || ci_write )
HGOTO_ERROR(H5E_FILE, H5E_UNSUPPORTED, FAIL, "can't have both SWMR and MDC cache image")
/* Flush the superblock extension */
if(H5F_flush_tagged_metadata(file, file->shared->sblock->ext_addr, H5AC_ind_read_dxpl_id) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush superblock extension")
/* Flush data buffers */
if(H5F__flush(file, H5AC_ind_read_dxpl_id, H5AC_rawdata_dxpl_id, FALSE) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush file's cached information")
/* Get the # of opened named datatypes and attributes */
if(H5F_get_obj_count(file, H5F_OBJ_DATATYPE|H5F_OBJ_ATTR, FALSE, &nt_attr_count) < 0)
HGOTO_ERROR(H5E_INTERNAL, H5E_BADITER, FAIL, "H5F_get_obj_count failed")
if(nt_attr_count)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "named datatypes and/or attributes opened in the file")
/* Get the # of opened datasets and groups */
if(H5F_get_obj_count(file, H5F_OBJ_GROUP|H5F_OBJ_DATASET, FALSE, &grp_dset_count) < 0)
HGOTO_ERROR(H5E_INTERNAL, H5E_BADITER, FAIL, "H5F_get_obj_count failed")
if(grp_dset_count) {
/* Allocate space for group and object locations */
if((obj_ids = (hid_t *) H5MM_malloc(grp_dset_count * sizeof(hid_t))) == NULL)
HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, FAIL, "can't allocate buffer for hid_t")
if((obj_glocs = (H5G_loc_t *) H5MM_malloc(grp_dset_count * sizeof(H5G_loc_t))) == NULL)
HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, FAIL, "can't allocate buffer for H5G_loc_t")
if((obj_olocs = (H5O_loc_t *) H5MM_malloc(grp_dset_count * sizeof(H5O_loc_t))) == NULL)
HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, FAIL, "can't allocate buffer for H5O_loc_t")
if((obj_paths = (H5G_name_t *) H5MM_malloc(grp_dset_count * sizeof(H5G_name_t))) == NULL)
HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, FAIL, "can't allocate buffer for H5G_name_t")
/* Get the list of opened object ids (groups & datasets) */
if(H5F_get_obj_ids(file, H5F_OBJ_GROUP|H5F_OBJ_DATASET, grp_dset_count, obj_ids, FALSE, &grp_dset_count) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "H5F_get_obj_ids failed")
/* Refresh opened objects (groups, datasets) in the file */
for(u = 0; u < grp_dset_count; u++) {
H5O_loc_t *oloc; /* object location */
H5G_loc_t tmp_loc;
/* Set up the id's group location */
obj_glocs[u].oloc = &obj_olocs[u];
obj_glocs[u].path = &obj_paths[u];
H5G_loc_reset(&obj_glocs[u]);
/* get the id's object location */
if((oloc = H5O_get_loc(obj_ids[u])) == NULL)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an object")
/* Make deep local copy of object's location information */
H5G_loc(obj_ids[u], &tmp_loc);
H5G_loc_copy(&obj_glocs[u], &tmp_loc, H5_COPY_DEEP);
/* Close the object */
if(H5I_dec_ref(obj_ids[u]) < 0)
HGOTO_ERROR(H5E_ATOM, H5E_CANTCLOSEOBJ, FAIL, "decrementing object ID failed")
} /* end for */
} /* end if */
/* Set up I/O info for operation */
fio_info.f = file;
if(NULL == (fio_info.meta_dxpl = (H5P_genplist_t *)H5I_object(H5AC_ind_read_dxpl_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")
if(NULL == (fio_info.raw_dxpl = (H5P_genplist_t *)H5I_object(H5AC_rawdata_dxpl_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")
/* Flush and reset the accumulator */
if(H5F__accum_reset(&fio_info, TRUE) < 0)
HGOTO_ERROR(H5E_IO, H5E_CANTRESET, FAIL, "can't reset accumulator")
/* Turn on SWMR write in shared file open flags */
file->shared->flags |= H5F_ACC_SWMR_WRITE;
/* Mark the file in SWMR writing mode */
file->shared->sblock->status_flags |= H5F_SUPER_SWMR_WRITE_ACCESS;
/* Set up metadata read attempts */
file->shared->read_attempts = H5F_SWMR_METADATA_READ_ATTEMPTS;
/* Initialize "retries" and "retries_nbins" */
if(H5F_set_retries(file) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "can't set retries and retries_nbins")
/* Turn off usage of accumulator */
file->shared->feature_flags &= ~(unsigned)H5FD_FEAT_ACCUMULATE_METADATA;
if(H5FD_set_feature_flags(file->shared->lf, file->shared->feature_flags) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "can't set feature_flags in VFD")
setup = TRUE;
/* Mark superblock as dirty */
if(H5F_super_dirty(file) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark superblock as dirty")
/* Flush the superblock */
if(H5F_flush_tagged_metadata(file, H5AC__SUPERBLOCK_TAG, H5AC_ind_read_dxpl_id) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush superblock")
/* Evict all flushed entries in the cache except the pinned superblock */
if(H5F__evict_cache_entries(file, H5AC_ind_read_dxpl_id) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to evict file's cached information")
/* Refresh (reopen) the objects (groups & datasets) in the file */
for(u = 0; u < grp_dset_count; u++)
if(H5O_refresh_metadata_reopen(obj_ids[u], &obj_glocs[u], H5AC_ind_read_dxpl_id, TRUE) < 0)
HGOTO_ERROR(H5E_ATOM, H5E_CLOSEERROR, FAIL, "can't refresh-close object")
/* Unlock the file */
if(H5FD_unlock(file->shared->lf) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, FAIL, "unable to unlock the file")
/* start SWMR writing */
if (H5F_start_swmr_write(file) < 0)
HGOTO_ERROR(H5E_FILE, H5E_SYSTEM, FAIL, "unable to start SWMR writing")
done:
if(ret_value < 0 && setup) {
HDassert(file);
/* Re-enable accumulator */
file->shared->feature_flags |= (unsigned)H5FD_FEAT_ACCUMULATE_METADATA;
if(H5FD_set_feature_flags(file->shared->lf, file->shared->feature_flags) < 0)
HDONE_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "can't set feature_flags in VFD")
/* Reset the # of read attempts */
file->shared->read_attempts = H5F_METADATA_READ_ATTEMPTS;
if(H5F_set_retries(file) < 0)
HDONE_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "can't set retries and retries_nbins")
/* Un-set H5F_ACC_SWMR_WRITE in shared open flags */
file->shared->flags &= ~H5F_ACC_SWMR_WRITE;
/* Unmark the file: not in SWMR writing mode */
file->shared->sblock->status_flags &= (uint8_t)(~H5F_SUPER_SWMR_WRITE_ACCESS);
/* Mark superblock as dirty */
if(H5F_super_dirty(file) < 0)
HDONE_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark superblock as dirty")
/* Flush the superblock */
if(H5F_flush_tagged_metadata(file, H5AC__SUPERBLOCK_TAG, H5AC_ind_read_dxpl_id) < 0)
HDONE_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush superblock")
} /* end if */
/* Free memory */
if(obj_ids)
H5MM_xfree(obj_ids);
if(obj_glocs)
H5MM_xfree(obj_glocs);
if(obj_olocs)
H5MM_xfree(obj_olocs);
if(obj_paths)
H5MM_xfree(obj_paths);
FUNC_LEAVE_API(ret_value)
} /* end H5Fstart_swmr_write() */

View File

@ -2981,3 +2981,321 @@ H5F_set_coll_md_read(H5F_t *f, H5P_coll_md_read_flag_t cmr)
FUNC_LEAVE_NOAPI_VOID
} /* H5F_set_coll_md_read() */
#endif /* H5_HAVE_PARALLEL */
/*-------------------------------------------------------------------------
* Function: H5F_get_metadata_read_retry_info
*
* Purpose: Private function to retrieve the collection of read retries
* for metadata items with checksum.
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5F_get_metadata_read_retry_info(H5F_t *file, H5F_retry_info_t *info)
{
unsigned i, j; /* Local index variable */
size_t tot_size; /* Size of each retries[i] */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(FAIL)
/* Check args */
HDassert(file);
HDassert(info);
/* Copy the # of bins for "retries" array */
info->nbins = file->shared->retries_nbins;
/* Initialize the array of "retries" */
HDmemset(info->retries, 0, sizeof(info->retries));
/* Return if there are no bins -- no retries */
if (!info->nbins)
HGOTO_DONE(SUCCEED);
/* Calculate size for each retries[i] */
tot_size = info->nbins * sizeof(uint32_t);
/* Map and copy information to info's retries for metadata items with tracking for read retries */
j = 0;
for (i = 0; i < H5AC_NTYPES; i++) {
switch (i) {
case H5AC_OHDR_ID:
case H5AC_OHDR_CHK_ID:
case H5AC_BT2_HDR_ID:
case H5AC_BT2_INT_ID:
case H5AC_BT2_LEAF_ID:
case H5AC_FHEAP_HDR_ID:
case H5AC_FHEAP_DBLOCK_ID:
case H5AC_FHEAP_IBLOCK_ID:
case H5AC_FSPACE_HDR_ID:
case H5AC_FSPACE_SINFO_ID:
case H5AC_SOHM_TABLE_ID:
case H5AC_SOHM_LIST_ID:
case H5AC_EARRAY_HDR_ID:
case H5AC_EARRAY_IBLOCK_ID:
case H5AC_EARRAY_SBLOCK_ID:
case H5AC_EARRAY_DBLOCK_ID:
case H5AC_EARRAY_DBLK_PAGE_ID:
case H5AC_FARRAY_HDR_ID:
case H5AC_FARRAY_DBLOCK_ID:
case H5AC_FARRAY_DBLK_PAGE_ID:
case H5AC_SUPERBLOCK_ID:
HDassert(j < H5F_NUM_METADATA_READ_RETRY_TYPES);
if (file->shared->retries[i] != NULL) {
/* Allocate memory for retries[i]
*
* This memory should be released by the user with
* the H5free_memory() call.
*/
if (NULL == (info->retries[j] = (uint32_t *)H5MM_malloc(tot_size)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed")
/* Copy the information */
HDmemcpy(info->retries[j], file->shared->retries[i], tot_size);
}
/* Increment location in info->retries[] array */
j++;
break;
default:
break;
}
}
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5F_get_metadata_read_retry_info() */
/*-------------------------------------------------------------------------
* Function: H5F_start_swmr_write
*
* Purpose: To enable SWMR writing mode for the file
*
* 1) Refresh opened objects: part 1
* 2) Flush & reset accumulator
* 3) Mark the file in SWMR writing mode
* 4) Set metadata read attempts and retries info
* 5) Disable accumulator
* 6) Evict all cache entries except the superblock
* 7) Refresh opened objects (part 2)
* 8) Unlock the file
*
* Pre-conditions:
*
* 1) The file being opened has v3 superblock
* 2) The file is opened with H5F_ACC_RDWR
* 3) The file is not already marked for SWMR writing
* 4) Current implementaion for opened objects:
* --only allow datasets and groups without attributes
* --disallow named datatype with/without attributes
* --disallow opened attributes attached to objects
*
* NOTE: Currently, only opened groups and datasets are allowed
* when enabling SWMR via H5Fstart_swmr_write().
* Will later implement a different approach--
* set up flush dependency/proxy even for file opened without
* SWMR to resolve issues with opened objects.
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5F_start_swmr_write(H5F_t *file)
{
hbool_t ci_load = FALSE; /* whether MDC ci load requested */
hbool_t ci_write = FALSE; /* whether MDC CI write requested */
size_t grp_dset_count=0; /* # of open objects: groups & datasets */
size_t nt_attr_count=0; /* # of opened named datatypes + opened attributes */
hid_t *obj_ids = NULL; /* List of ids */
H5G_loc_t *obj_glocs = NULL; /* Group location of the object */
H5O_loc_t *obj_olocs = NULL; /* Object location */
H5G_name_t *obj_paths = NULL; /* Group hierarchy path */
size_t u; /* Local index variable */
hbool_t setup = FALSE; /* Boolean flag to indicate whether SWMR setting is enabled */
H5F_io_info2_t fio_info; /* I/O info for operation */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(FAIL)
/* check args */
HDassert(file);
/* Should have write permission */
if ((H5F_INTENT(file) & H5F_ACC_RDWR) == 0)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "no write intent on file")
/* Check superblock version */
if (file->shared->sblock->super_vers < HDF5_SUPERBLOCK_VERSION_3)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "file superblock version - should be at least 3")
/* Check for correct file format version */
if ((file->shared->low_bound != H5F_LIBVER_V110) || (file->shared->high_bound != H5F_LIBVER_V110))
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "file format version does not support SWMR - needs to be 1.10 or greater")
/* Should not be marked for SWMR writing mode already */
if (file->shared->sblock->status_flags & H5F_SUPER_SWMR_WRITE_ACCESS)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "file already in SWMR writing mode")
/* Check to see if cache image is enabled. Fail if so */
if (H5C_cache_image_status(file, &ci_load, &ci_write) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't get MDC cache image status")
if (ci_load || ci_write )
HGOTO_ERROR(H5E_FILE, H5E_UNSUPPORTED, FAIL, "can't have both SWMR and MDC cache image")
/* Flush the superblock extension */
if (H5F_flush_tagged_metadata(file, file->shared->sblock->ext_addr, H5AC_ind_read_dxpl_id) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush superblock extension")
/* Flush data buffers */
if (H5F__flush(file, H5AC_ind_read_dxpl_id, H5AC_rawdata_dxpl_id, FALSE) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush file's cached information")
/* Get the # of opened named datatypes and attributes */
if (H5F_get_obj_count(file, H5F_OBJ_DATATYPE|H5F_OBJ_ATTR, FALSE, &nt_attr_count) < 0)
HGOTO_ERROR(H5E_INTERNAL, H5E_BADITER, FAIL, "H5F_get_obj_count failed")
if (nt_attr_count)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "named datatypes and/or attributes opened in the file")
/* Get the # of opened datasets and groups */
if (H5F_get_obj_count(file, H5F_OBJ_GROUP|H5F_OBJ_DATASET, FALSE, &grp_dset_count) < 0)
HGOTO_ERROR(H5E_INTERNAL, H5E_BADITER, FAIL, "H5F_get_obj_count failed")
if (grp_dset_count) {
/* Allocate space for group and object locations */
if ((obj_ids = (hid_t *) H5MM_malloc(grp_dset_count * sizeof(hid_t))) == NULL)
HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, FAIL, "can't allocate buffer for hid_t")
if ((obj_glocs = (H5G_loc_t *) H5MM_malloc(grp_dset_count * sizeof(H5G_loc_t))) == NULL)
HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, FAIL, "can't allocate buffer for H5G_loc_t")
if ((obj_olocs = (H5O_loc_t *) H5MM_malloc(grp_dset_count * sizeof(H5O_loc_t))) == NULL)
HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, FAIL, "can't allocate buffer for H5O_loc_t")
if ((obj_paths = (H5G_name_t *) H5MM_malloc(grp_dset_count * sizeof(H5G_name_t))) == NULL)
HGOTO_ERROR(H5E_FILE, H5E_NOSPACE, FAIL, "can't allocate buffer for H5G_name_t")
/* Get the list of opened object ids (groups & datasets) */
if (H5F_get_obj_ids(file, H5F_OBJ_GROUP|H5F_OBJ_DATASET, grp_dset_count, obj_ids, FALSE, &grp_dset_count) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "H5F_get_obj_ids failed")
/* Refresh opened objects (groups, datasets) in the file */
for (u = 0; u < grp_dset_count; u++) {
H5O_loc_t *oloc; /* object location */
H5G_loc_t tmp_loc;
/* Set up the id's group location */
obj_glocs[u].oloc = &obj_olocs[u];
obj_glocs[u].path = &obj_paths[u];
H5G_loc_reset(&obj_glocs[u]);
/* get the id's object location */
if ((oloc = H5O_get_loc(obj_ids[u])) == NULL)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an object")
/* Make deep local copy of object's location information */
H5G_loc(obj_ids[u], &tmp_loc);
H5G_loc_copy(&obj_glocs[u], &tmp_loc, H5_COPY_DEEP);
/* Close the object */
if (H5I_dec_ref(obj_ids[u]) < 0)
HGOTO_ERROR(H5E_ATOM, H5E_CANTCLOSEOBJ, FAIL, "decrementing object ID failed")
}
}
/* Set up I/O info for operation */
fio_info.f = file;
if (NULL == (fio_info.meta_dxpl = (H5P_genplist_t *)H5I_object(H5AC_ind_read_dxpl_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")
if (NULL == (fio_info.raw_dxpl = (H5P_genplist_t *)H5I_object(H5AC_rawdata_dxpl_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")
/* Flush and reset the accumulator */
if (H5F__accum_reset(&fio_info, TRUE) < 0)
HGOTO_ERROR(H5E_IO, H5E_CANTRESET, FAIL, "can't reset accumulator")
/* Turn on SWMR write in shared file open flags */
file->shared->flags |= H5F_ACC_SWMR_WRITE;
/* Mark the file in SWMR writing mode */
file->shared->sblock->status_flags |= H5F_SUPER_SWMR_WRITE_ACCESS;
/* Set up metadata read attempts */
file->shared->read_attempts = H5F_SWMR_METADATA_READ_ATTEMPTS;
/* Initialize "retries" and "retries_nbins" */
if (H5F_set_retries(file) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "can't set retries and retries_nbins")
/* Turn off usage of accumulator */
file->shared->feature_flags &= ~(unsigned)H5FD_FEAT_ACCUMULATE_METADATA;
if (H5FD_set_feature_flags(file->shared->lf, file->shared->feature_flags) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "can't set feature_flags in VFD")
setup = TRUE;
/* Mark superblock as dirty */
if (H5F_super_dirty(file) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark superblock as dirty")
/* Flush the superblock */
if (H5F_flush_tagged_metadata(file, H5AC__SUPERBLOCK_TAG, H5AC_ind_read_dxpl_id) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush superblock")
/* Evict all flushed entries in the cache except the pinned superblock */
if (H5F__evict_cache_entries(file, H5AC_ind_read_dxpl_id) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to evict file's cached information")
/* Refresh (reopen) the objects (groups & datasets) in the file */
for (u = 0; u < grp_dset_count; u++)
if (H5O_refresh_metadata_reopen(obj_ids[u], &obj_glocs[u], H5AC_ind_read_dxpl_id, TRUE) < 0)
HGOTO_ERROR(H5E_ATOM, H5E_CLOSEERROR, FAIL, "can't refresh-close object")
/* Unlock the file */
if (H5FD_unlock(file->shared->lf) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, FAIL, "unable to unlock the file")
done:
if(ret_value < 0 && setup) {
/* Re-enable accumulator */
file->shared->feature_flags |= (unsigned)H5FD_FEAT_ACCUMULATE_METADATA;
if (H5FD_set_feature_flags(file->shared->lf, file->shared->feature_flags) < 0)
HDONE_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "can't set feature_flags in VFD")
/* Reset the # of read attempts */
file->shared->read_attempts = H5F_METADATA_READ_ATTEMPTS;
if (H5F_set_retries(file) < 0)
HDONE_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "can't set retries and retries_nbins")
/* Un-set H5F_ACC_SWMR_WRITE in shared open flags */
file->shared->flags &= ~H5F_ACC_SWMR_WRITE;
/* Unmark the file: not in SWMR writing mode */
file->shared->sblock->status_flags &= (uint8_t)(~H5F_SUPER_SWMR_WRITE_ACCESS);
/* Mark superblock as dirty */
if (H5F_super_dirty(file) < 0)
HDONE_ERROR(H5E_FILE, H5E_CANTMARKDIRTY, FAIL, "unable to mark superblock as dirty")
/* Flush the superblock */
if (H5F_flush_tagged_metadata(file, H5AC__SUPERBLOCK_TAG, H5AC_ind_read_dxpl_id) < 0)
HDONE_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush superblock")
}
/* Free memory */
if (obj_ids)
H5MM_xfree(obj_ids);
if (obj_glocs)
H5MM_xfree(obj_glocs);
if (obj_olocs)
H5MM_xfree(obj_olocs);
if (obj_paths)
H5MM_xfree(obj_paths);
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5F_start_swmr_write() */

View File

@ -723,6 +723,7 @@ typedef enum H5F_mem_page_t {
H5_DLL H5F_t *H5F_open(const char *name, unsigned flags, hid_t fcpl_id,
hid_t fapl_id, hid_t dxpl_id);
H5_DLL herr_t H5F_try_close(H5F_t *f, hbool_t *was_closed/*out*/);
H5_DLL herr_t H5F_start_swmr_write(H5F_t *file);
/* Functions that retrieve values from the file struct */
H5_DLL H5F_libver_t H5F_get_low_bound(const H5F_t *f);
@ -817,6 +818,7 @@ H5_DLL herr_t H5F_get_checksums(const uint8_t *buf, size_t chk_size, uint32_t *s
/* Routine to track the # of retries */
H5_DLL herr_t H5F_track_metadata_read_retries(H5F_t *f, unsigned actype, unsigned retries);
H5_DLL herr_t H5F_set_retries(H5F_t *f);
H5_DLL herr_t H5F_get_metadata_read_retry_info(H5F_t *file, H5F_retry_info_t *info);
/* Routine to invoke callback function upon object flush */
H5_DLL herr_t H5F_object_flush_cb(H5F_t *f, hid_t obj_id);