diff options
Diffstat (limited to 'src/H5Dchunk.c')
| -rw-r--r-- | src/H5Dchunk.c | 378 |
1 files changed, 275 insertions, 103 deletions
diff --git a/src/H5Dchunk.c b/src/H5Dchunk.c index 1b0e579..e4d8706 100644 --- a/src/H5Dchunk.c +++ b/src/H5Dchunk.c @@ -239,10 +239,14 @@ typedef struct H5D_chunk_file_iter_ud_t { #ifdef H5_HAVE_PARALLEL /* information to construct a collective I/O operation for filling chunks */ -typedef struct H5D_chunk_coll_info_t { - size_t num_io; /* Number of write operations */ - haddr_t *addr; /* array of the file addresses of the write operation */ -} H5D_chunk_coll_info_t; +typedef struct H5D_chunk_coll_fill_info_t { + size_t num_chunks; /* Number of chunks in the write operation */ + struct chunk_coll_fill_info { + haddr_t addr; /* File address of the chunk */ + size_t chunk_size; /* Size of the chunk in the file */ + hbool_t unfiltered_partial_chunk; + } * chunk_info; +} H5D_chunk_coll_fill_info_t; #endif /* H5_HAVE_PARALLEL */ typedef struct H5D_chunk_iter_ud_t { @@ -287,9 +291,6 @@ static int H5D__chunk_format_convert_cb(const H5D_chunk_rec_t *chunk_rec, void * /* Helper routines */ static herr_t H5D__chunk_set_info_real(H5O_layout_chunk_t *layout, unsigned ndims, const hsize_t *curr_dims, const hsize_t *max_dims); -static void * H5D__chunk_mem_alloc(size_t size, const H5O_pline_t *pline); -static void * H5D__chunk_mem_xfree(void *chk, const void *pline); -static void * H5D__chunk_mem_realloc(void *chk, size_t size, const H5O_pline_t *pline); static herr_t H5D__chunk_cinfo_cache_reset(H5D_chunk_cached_t *last); static herr_t H5D__chunk_cinfo_cache_update(H5D_chunk_cached_t *last, const H5D_chunk_ud_t *udata); static hbool_t H5D__chunk_cinfo_cache_found(const H5D_chunk_cached_t *last, H5D_chunk_ud_t *udata); @@ -306,8 +307,6 @@ static herr_t H5D__chunk_mem_cb(void *elem, const H5T_t *type, unsigned ndims, static unsigned H5D__chunk_hash_val(const H5D_shared_t *shared, const hsize_t *scaled); static herr_t H5D__chunk_flush_entry(const H5D_t *dset, H5D_rdcc_ent_t *ent, hbool_t reset); static herr_t H5D__chunk_cache_evict(const H5D_t *dset, H5D_rdcc_ent_t *ent, hbool_t flush); -static hbool_t H5D__chunk_is_partial_edge_chunk(unsigned dset_ndims, const uint32_t *chunk_dims, - const hsize_t *chunk_scaled, const hsize_t *dset_dims); static void * H5D__chunk_lock(const H5D_io_info_t *io_info, H5D_chunk_ud_t *udata, hbool_t relax, hbool_t prev_unfilt_chunk); static herr_t H5D__chunk_unlock(const H5D_io_info_t *io_info, const H5D_chunk_ud_t *udata, hbool_t dirty, @@ -315,9 +314,9 @@ static herr_t H5D__chunk_unlock(const H5D_io_info_t *io_info, const H5D_chunk_ static herr_t H5D__chunk_cache_prune(const H5D_t *dset, size_t size); static herr_t H5D__chunk_prune_fill(H5D_chunk_it_ud1_t *udata, hbool_t new_unfilt_chunk); #ifdef H5_HAVE_PARALLEL -static herr_t H5D__chunk_collective_fill(const H5D_t *dset, H5D_chunk_coll_info_t *chunk_info, - size_t chunk_size, const void *fill_buf); -static int H5D__chunk_cmp_addr(const void *addr1, const void *addr2); +static herr_t H5D__chunk_collective_fill(const H5D_t *dset, H5D_chunk_coll_fill_info_t *chunk_fill_info, + const void *fill_buf, const void *partial_chunk_fill_buf); +static int H5D__chunk_cmp_coll_fill_info(const void *_entry1, const void *_entry2); #endif /* H5_HAVE_PARALLEL */ /* Debugging helper routine callback */ @@ -1362,7 +1361,7 @@ done: * *------------------------------------------------------------------------- */ -static void * +void * H5D__chunk_mem_alloc(size_t size, const H5O_pline_t *pline) { void *ret_value = NULL; /* Return value */ @@ -1393,7 +1392,7 @@ H5D__chunk_mem_alloc(size_t size, const H5O_pline_t *pline) * *------------------------------------------------------------------------- */ -static void * +void * H5D__chunk_mem_xfree(void *chk, const void *_pline) { const H5O_pline_t *pline = (const H5O_pline_t *)_pline; @@ -1417,7 +1416,7 @@ H5D__chunk_mem_xfree(void *chk, const void *_pline) * calls H5D__chunk_mem_xfree and discards the return value. *------------------------------------------------------------------------- */ -static void +void H5D__chunk_mem_free(void *chk, const void *_pline) { (void)H5D__chunk_mem_xfree(chk, _pline); @@ -1437,7 +1436,7 @@ H5D__chunk_mem_free(void *chk, const void *_pline) * *------------------------------------------------------------------------- */ -static void * +void * H5D__chunk_mem_realloc(void *chk, size_t size, const H5O_pline_t *pline) { void *ret_value = NULL; /* Return value */ @@ -4320,8 +4319,8 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, const hbool_t blocks_written = FALSE; /* Flag to indicate that chunk was actually written */ hbool_t using_mpi = FALSE; /* Flag to indicate that the file is being accessed with an MPI-capable file driver */ - H5D_chunk_coll_info_t chunk_info; /* chunk address information for doing I/O */ -#endif /* H5_HAVE_PARALLEL */ + H5D_chunk_coll_fill_info_t chunk_fill_info; /* chunk address information for doing I/O */ +#endif /* H5_HAVE_PARALLEL */ hbool_t carry; /* Flag to indicate that chunk increment carrys to higher dimension (sorta) */ unsigned space_ndims; /* Dataset's space rank */ const hsize_t * space_dim; /* Dataset's dataspace dimensions */ @@ -4368,8 +4367,8 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, const using_mpi = TRUE; /* init chunk info stuff for collective I/O */ - chunk_info.num_io = 0; - chunk_info.addr = NULL; + chunk_fill_info.num_chunks = 0; + chunk_fill_info.chunk_info = NULL; } /* end if */ #endif /* H5_HAVE_PARALLEL */ @@ -4641,19 +4640,26 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, const if (using_mpi) { /* collect all chunk addresses to be written to write collectively at the end */ - /* allocate/resize address array if no more space left */ - /* Note that if we add support for parallel filters we must - * also store an array of chunk sizes and pass it to the - * apporpriate collective write function */ - if (0 == chunk_info.num_io % 1024) - if (NULL == (chunk_info.addr = (haddr_t *)H5MM_realloc( - chunk_info.addr, (chunk_info.num_io + 1024) * sizeof(haddr_t)))) + + /* allocate/resize chunk info array if no more space left */ + if (0 == chunk_fill_info.num_chunks % 1024) { + void *tmp_realloc; + + if (NULL == (tmp_realloc = H5MM_realloc(chunk_fill_info.chunk_info, + (chunk_fill_info.num_chunks + 1024) * + sizeof(struct chunk_coll_fill_info)))) HGOTO_ERROR(H5E_DATASET, H5E_CANTALLOC, FAIL, - "memory allocation failed for chunk addresses") + "memory allocation failed for chunk fill info") + + chunk_fill_info.chunk_info = tmp_realloc; + } - /* Store the chunk's address for later */ - chunk_info.addr[chunk_info.num_io] = udata.chunk_block.offset; - chunk_info.num_io++; + /* Store info about the chunk for later */ + chunk_fill_info.chunk_info[chunk_fill_info.num_chunks].addr = udata.chunk_block.offset; + chunk_fill_info.chunk_info[chunk_fill_info.num_chunks].chunk_size = chunk_size; + chunk_fill_info.chunk_info[chunk_fill_info.num_chunks].unfiltered_partial_chunk = + (*fill_buf == unfilt_fill_buf); + chunk_fill_info.num_chunks++; /* Indicate that blocks will be written */ blocks_written = TRUE; @@ -4726,7 +4732,7 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, const #ifdef H5_HAVE_PARALLEL /* do final collective I/O */ if (using_mpi && blocks_written) - if (H5D__chunk_collective_fill(dset, &chunk_info, chunk_size, fb_info.fill_buf) < 0) + if (H5D__chunk_collective_fill(dset, &chunk_fill_info, fb_info.fill_buf, unfilt_fill_buf) < 0) HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "unable to write raw data to file") #endif /* H5_HAVE_PARALLEL */ @@ -4742,8 +4748,8 @@ done: unfilt_fill_buf = H5D__chunk_mem_xfree(unfilt_fill_buf, &def_pline); #ifdef H5_HAVE_PARALLEL - if (using_mpi && chunk_info.addr) - H5MM_free(chunk_info.addr); + if (using_mpi && chunk_fill_info.chunk_info) + H5MM_free(chunk_fill_info.chunk_info); #endif FUNC_LEAVE_NOAPI(ret_value) @@ -4937,27 +4943,35 @@ done: *------------------------------------------------------------------------- */ static herr_t -H5D__chunk_collective_fill(const H5D_t *dset, H5D_chunk_coll_info_t *chunk_info, size_t chunk_size, - const void *fill_buf) +H5D__chunk_collective_fill(const H5D_t *dset, H5D_chunk_coll_fill_info_t *chunk_fill_info, + const void *fill_buf, const void *partial_chunk_fill_buf) { - MPI_Comm mpi_comm = MPI_COMM_NULL; /* MPI communicator for file */ - int mpi_rank = (-1); /* This process's rank */ - int mpi_size = (-1); /* MPI Comm size */ - int mpi_code; /* MPI return code */ - size_t num_blocks; /* Number of blocks between processes. */ - size_t leftover_blocks; /* Number of leftover blocks to handle */ - int blocks, leftover, block_len; /* converted to int for MPI */ + MPI_Comm mpi_comm = MPI_COMM_NULL; /* MPI communicator for file */ + int mpi_rank = (-1); /* This process's rank */ + int mpi_size = (-1); /* MPI Comm size */ + int mpi_code; /* MPI return code */ + size_t num_blocks; /* Number of blocks between processes. */ + size_t leftover_blocks; /* Number of leftover blocks to handle */ + int blocks, leftover; /* converted to int for MPI */ MPI_Aint * chunk_disp_array = NULL; + MPI_Aint * block_disps = NULL; int * block_lens = NULL; MPI_Datatype mem_type = MPI_BYTE, file_type = MPI_BYTE; H5FD_mpio_xfer_t prev_xfer_mode; /* Previous data xfer mode */ hbool_t have_xfer_mode = FALSE; /* Whether the previous xffer mode has been retrieved */ - hbool_t need_addr_sort = FALSE; - int i; /* Local index variable */ + hbool_t need_sort = FALSE; + size_t i; /* Local index variable */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_STATIC + /* + * If a separate fill buffer is provided for partial chunks, ensure + * that the "don't filter partial edge chunks" flag is set. + */ + if (partial_chunk_fill_buf) + HDassert(dset->shared->layout.u.chunk.flags & H5O_LAYOUT_CHUNK_DONT_FILTER_PARTIAL_BOUND_CHUNKS); + /* Get the MPI communicator */ if (MPI_COMM_NULL == (mpi_comm = H5F_mpi_get_comm(dset->oloc.file))) HGOTO_ERROR(H5E_INTERNAL, H5E_MPI, FAIL, "Can't retrieve MPI communicator") @@ -4973,39 +4987,89 @@ H5D__chunk_collective_fill(const H5D_t *dset, H5D_chunk_coll_info_t *chunk_info, /* Distribute evenly the number of blocks between processes. */ if (mpi_size == 0) HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, FAIL, "Resulted in division by zero") - num_blocks = (size_t)(chunk_info->num_io / (size_t)mpi_size); /* value should be the same on all procs */ + num_blocks = + (size_t)(chunk_fill_info->num_chunks / (size_t)mpi_size); /* value should be the same on all procs */ /* After evenly distributing the blocks between processes, are there any * leftover blocks for each individual process (round-robin)? */ - leftover_blocks = (size_t)(chunk_info->num_io % (size_t)mpi_size); + leftover_blocks = (size_t)(chunk_fill_info->num_chunks % (size_t)mpi_size); /* Cast values to types needed by MPI */ H5_CHECKED_ASSIGN(blocks, int, num_blocks, size_t); H5_CHECKED_ASSIGN(leftover, int, leftover_blocks, size_t); - H5_CHECKED_ASSIGN(block_len, int, chunk_size, size_t); /* Check if we have any chunks to write on this rank */ if (num_blocks > 0 || (leftover && leftover > mpi_rank)) { + MPI_Aint partial_fill_buf_disp = 0; + hbool_t all_same_block_len = TRUE; + /* Allocate buffers */ - /* (MSC - should not need block_lens if MPI_type_create_hindexed_block is working) */ - if (NULL == (block_lens = (int *)H5MM_malloc((size_t)(blocks + 1) * sizeof(int)))) - HGOTO_ERROR(H5E_DATASET, H5E_CANTALLOC, FAIL, "couldn't allocate chunk lengths buffer") if (NULL == (chunk_disp_array = (MPI_Aint *)H5MM_malloc((size_t)(blocks + 1) * sizeof(MPI_Aint)))) HGOTO_ERROR(H5E_DATASET, H5E_CANTALLOC, FAIL, "couldn't allocate chunk file displacement buffer") - for (i = 0; i < blocks; i++) { - /* store the chunk address as an MPI_Aint */ - chunk_disp_array[i] = (MPI_Aint)(chunk_info->addr[i + (mpi_rank * blocks)]); + if (partial_chunk_fill_buf) { + MPI_Aint fill_buf_addr; + MPI_Aint partial_fill_buf_addr; + + /* Calculate the displacement between the fill buffer and partial chunk fill buffer */ + if (MPI_SUCCESS != (mpi_code = MPI_Get_address(fill_buf, &fill_buf_addr))) + HMPI_GOTO_ERROR(FAIL, "MPI_Get_address failed", mpi_code) + if (MPI_SUCCESS != (mpi_code = MPI_Get_address(partial_chunk_fill_buf, &partial_fill_buf_addr))) + HMPI_GOTO_ERROR(FAIL, "MPI_Get_address failed", mpi_code) - /* MSC - should not need this if MPI_type_create_hindexed_block is working */ - block_lens[i] = block_len; +#if MPI_VERSION >= 3 && MPI_SUBVERSION >= 1 + partial_fill_buf_disp = MPI_Aint_diff(partial_fill_buf_addr, fill_buf_addr); +#else + partial_fill_buf_disp = partial_fill_buf_addr - fill_buf_addr; +#endif - /* Make sure that the addresses in the datatype are - * monotonically non-decreasing + /* + * Allocate all-zero block displacements array. If a block's displacement + * is left as zero, that block will be written to from the regular fill + * buffer. If a block represents an unfiltered partial edge chunk, its + * displacement will be set so that the block is written to from the + * unfiltered fill buffer. */ - if (i && (chunk_disp_array[i] < chunk_disp_array[i - 1])) - need_addr_sort = TRUE; + if (NULL == (block_disps = (MPI_Aint *)H5MM_calloc((size_t)(blocks + 1) * sizeof(MPI_Aint)))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTALLOC, FAIL, "couldn't allocate block displacements buffer") + } + + /* + * Perform initial scan of chunk info list to: + * - make sure that chunk addresses are monotonically non-decreasing + * - check if all blocks have the same length + */ + for (i = 1; i < chunk_fill_info->num_chunks; i++) { + if (chunk_fill_info->chunk_info[i].addr < chunk_fill_info->chunk_info[i - 1].addr) + need_sort = TRUE; + + if (chunk_fill_info->chunk_info[i].chunk_size != chunk_fill_info->chunk_info[i - 1].chunk_size) + all_same_block_len = FALSE; + } + + if (need_sort) + HDqsort(chunk_fill_info->chunk_info, chunk_fill_info->num_chunks, + sizeof(struct chunk_coll_fill_info), H5D__chunk_cmp_coll_fill_info); + + /* Allocate buffer for block lengths if necessary */ + if (!all_same_block_len) + if (NULL == (block_lens = (int *)H5MM_malloc((size_t)(blocks + 1) * sizeof(int)))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTALLOC, FAIL, "couldn't allocate chunk lengths buffer") + + for (i = 0; i < (size_t)blocks; i++) { + size_t idx = i + (size_t)(mpi_rank * blocks); + + /* store the chunk address as an MPI_Aint */ + chunk_disp_array[i] = (MPI_Aint)(chunk_fill_info->chunk_info[idx].addr); + + if (!all_same_block_len) + H5_CHECKED_ASSIGN(block_lens[i], int, chunk_fill_info->chunk_info[idx].chunk_size, size_t); + + if (chunk_fill_info->chunk_info[idx].unfiltered_partial_chunk) { + HDassert(partial_chunk_fill_buf); + block_disps[i] = partial_fill_buf_disp; + } } /* end for */ /* Calculate if there are any leftover blocks after evenly @@ -5013,32 +5077,71 @@ H5D__chunk_collective_fill(const H5D_t *dset, H5D_chunk_coll_info_t *chunk_info, * to processes 0 -> leftover. */ if (leftover && leftover > mpi_rank) { - chunk_disp_array[blocks] = (MPI_Aint)chunk_info->addr[(blocks * mpi_size) + mpi_rank]; - if (blocks && (chunk_disp_array[blocks] < chunk_disp_array[blocks - 1])) - need_addr_sort = TRUE; - block_lens[blocks] = block_len; + chunk_disp_array[blocks] = + (MPI_Aint)chunk_fill_info->chunk_info[(blocks * mpi_size) + mpi_rank].addr; + + if (!all_same_block_len) + H5_CHECKED_ASSIGN(block_lens[blocks], int, + chunk_fill_info->chunk_info[(blocks * mpi_size) + mpi_rank].chunk_size, + size_t); + + if (chunk_fill_info->chunk_info[(blocks * mpi_size) + mpi_rank].unfiltered_partial_chunk) { + HDassert(partial_chunk_fill_buf); + block_disps[blocks] = partial_fill_buf_disp; + } + blocks++; } - /* Ensure that the blocks are sorted in monotonically non-decreasing - * order of offset in the file. - */ - if (need_addr_sort) - HDqsort(chunk_disp_array, (size_t)blocks, sizeof(MPI_Aint), H5D__chunk_cmp_addr); + /* Create file and memory types for the write operation */ + if (all_same_block_len) { + int block_len; + + H5_CHECKED_ASSIGN(block_len, int, chunk_fill_info->chunk_info[0].chunk_size, size_t); + + mpi_code = + MPI_Type_create_hindexed_block(blocks, block_len, chunk_disp_array, MPI_BYTE, &file_type); + if (mpi_code != MPI_SUCCESS) + HMPI_GOTO_ERROR(FAIL, "MPI_Type_create_hindexed_block failed", mpi_code) + + if (partial_chunk_fill_buf) { + /* + * If filters are disabled for partial edge chunks, those chunks could + * potentially have the same block length as the other chunks, but still + * need to be written to using the unfiltered fill buffer. Use an hindexed + * block type rather than an hvector. + */ + mpi_code = + MPI_Type_create_hindexed_block(blocks, block_len, block_disps, MPI_BYTE, &mem_type); + if (mpi_code != MPI_SUCCESS) + HMPI_GOTO_ERROR(FAIL, "MPI_Type_create_hindexed_block failed", mpi_code) + } + else { + mpi_code = MPI_Type_create_hvector(blocks, block_len, 0, MPI_BYTE, &mem_type); + if (mpi_code != MPI_SUCCESS) + HMPI_GOTO_ERROR(FAIL, "MPI_Type_create_hvector failed", mpi_code) + } + } + else { + /* + * Currently, different block lengths implies that there are partial + * edge chunks and the "don't filter partial edge chunks" flag is set. + */ + HDassert(partial_chunk_fill_buf); + HDassert(block_lens); + HDassert(block_disps); + + mpi_code = MPI_Type_create_hindexed(blocks, block_lens, chunk_disp_array, MPI_BYTE, &file_type); + if (mpi_code != MPI_SUCCESS) + HMPI_GOTO_ERROR(FAIL, "MPI_Type_create_hindexed failed", mpi_code) + + mpi_code = MPI_Type_create_hindexed(blocks, block_lens, block_disps, MPI_BYTE, &mem_type); + if (mpi_code != MPI_SUCCESS) + HMPI_GOTO_ERROR(FAIL, "MPI_Type_create_hindexed failed", mpi_code) + } - /* MSC - should use this if MPI_type_create_hindexed block is working: - * mpi_code = MPI_Type_create_hindexed_block(blocks, block_len, chunk_disp_array, MPI_BYTE, - * &file_type); - */ - mpi_code = MPI_Type_create_hindexed(blocks, block_lens, chunk_disp_array, MPI_BYTE, &file_type); - if (mpi_code != MPI_SUCCESS) - HMPI_GOTO_ERROR(FAIL, "MPI_Type_create_hindexed failed", mpi_code) if (MPI_SUCCESS != (mpi_code = MPI_Type_commit(&file_type))) HMPI_GOTO_ERROR(FAIL, "MPI_Type_commit failed", mpi_code) - - mpi_code = MPI_Type_create_hvector(blocks, block_len, 0, MPI_BYTE, &mem_type); - if (mpi_code != MPI_SUCCESS) - HMPI_GOTO_ERROR(FAIL, "MPI_Type_create_hvector failed", mpi_code) if (MPI_SUCCESS != (mpi_code = MPI_Type_commit(&mem_type))) HMPI_GOTO_ERROR(FAIL, "MPI_Type_commit failed", mpi_code) } /* end if */ @@ -5081,39 +5184,25 @@ done: if (MPI_SUCCESS != (mpi_code = MPI_Type_free(&mem_type))) HMPI_DONE_ERROR(FAIL, "MPI_Type_free failed", mpi_code) H5MM_xfree(chunk_disp_array); + H5MM_xfree(block_disps); H5MM_xfree(block_lens); FUNC_LEAVE_NOAPI(ret_value) } /* end H5D__chunk_collective_fill() */ static int -H5D__chunk_cmp_addr(const void *addr1, const void *addr2) +H5D__chunk_cmp_coll_fill_info(const void *_entry1, const void *_entry2) { - MPI_Aint _addr1 = (MPI_Aint)0, _addr2 = (MPI_Aint)0; - int ret_value = 0; + const struct chunk_coll_fill_info *entry1; + const struct chunk_coll_fill_info *entry2; FUNC_ENTER_STATIC_NOERR - _addr1 = *((const MPI_Aint *)addr1); - _addr2 = *((const MPI_Aint *)addr2); + entry1 = (const struct chunk_coll_fill_info *)_entry1; + entry2 = (const struct chunk_coll_fill_info *)_entry2; -#if MPI_VERSION >= 3 && MPI_SUBVERSION >= 1 - { - MPI_Aint diff = MPI_Aint_diff(_addr1, _addr2); - - if (diff < (MPI_Aint)0) - ret_value = -1; - else if (diff > (MPI_Aint)0) - ret_value = 1; - else - ret_value = 0; - } -#else - ret_value = (_addr1 > _addr2) - (_addr1 < _addr2); -#endif - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5D__chunk_cmp_addr() */ + FUNC_LEAVE_NOAPI(H5F_addr_cmp(entry1->addr, entry2->addr)) +} /* end H5D__chunk_cmp_coll_fill_info() */ #endif /* H5_HAVE_PARALLEL */ /*------------------------------------------------------------------------- @@ -6827,7 +6916,7 @@ done: * *------------------------------------------------------------------------- */ -static hbool_t +hbool_t H5D__chunk_is_partial_edge_chunk(unsigned dset_ndims, const uint32_t *chunk_dims, const hsize_t scaled[], const hsize_t *dset_dims) { @@ -7122,6 +7211,89 @@ done: } /* end H5D__chunk_format_convert() */ /*------------------------------------------------------------------------- + * Function: H5D__chunk_index_empty_cb + * + * Purpose: Callback function that simply stops iteration and sets the + * `empty` parameter to FALSE if called. If this callback is + * entered, it means that the chunk index contains at least + * one chunk, so is not empty. + * + * Return: H5_ITER_STOP + * + *------------------------------------------------------------------------- + */ +static int +H5D__chunk_index_empty_cb(const H5D_chunk_rec_t H5_ATTR_UNUSED *chunk_rec, void *_udata) +{ + hbool_t *empty = (hbool_t *)_udata; + int ret_value = H5_ITER_STOP; + + FUNC_ENTER_STATIC_NOERR + + *empty = FALSE; + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__chunk_index_empty_cb() */ + +/*------------------------------------------------------------------------- + * Function: H5D__chunk_index_empty + * + * Purpose: Determines whether a chunk index is empty (has no chunks + * inserted into it yet). + * + * Note: This routine is meant to be a little more performant than + * just counting the number of chunks in the index. In the + * future, this is probably a callback that the chunk index + * ops structure should provide. + * + * Return: Non-negative on Success/Negative on failure + * + *------------------------------------------------------------------------- + */ +herr_t +H5D__chunk_index_empty(const H5D_t *dset, hbool_t *empty) +{ + H5D_chk_idx_info_t idx_info; /* Chunked index info */ + H5D_rdcc_ent_t * ent; /* Cache entry */ + const H5D_rdcc_t * rdcc = NULL; /* Raw data chunk cache */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_PACKAGE_TAG(dset->oloc.addr) + + HDassert(dset); + HDassert(dset->shared); + HDassert(empty); + + rdcc = &(dset->shared->cache.chunk); /* raw data chunk cache */ + HDassert(rdcc); + + /* Search for cached chunks that haven't been written out */ + for (ent = rdcc->head; ent; ent = ent->next) + /* Flush the chunk out to disk, to make certain the size is correct later */ + if (H5D__chunk_flush_entry(dset, ent, FALSE) < 0) + HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "cannot flush indexed storage buffer") + + /* Compose chunked index info struct */ + idx_info.f = dset->oloc.file; + idx_info.pline = &dset->shared->dcpl_cache.pline; + idx_info.layout = &dset->shared->layout.u.chunk; + idx_info.storage = &dset->shared->layout.storage.u.chunk; + + *empty = TRUE; + + if (H5F_addr_defined(idx_info.storage->idx_addr)) { + /* Iterate over the allocated chunks */ + if ((dset->shared->layout.storage.u.chunk.ops->iterate)(&idx_info, H5D__chunk_index_empty_cb, empty) < + 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, + "unable to retrieve allocated chunk information from index") + } + +done: + FUNC_LEAVE_NOAPI_TAG(ret_value) +} /* end H5D__chunk_index_empty() */ + +/*------------------------------------------------------------------------- * Function: H5D__get_num_chunks_cb * * Purpose: Callback function that increments the number of written |