/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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 files COPYING and Copyright.html. COPYING can be found at the root * * of the source code distribution tree; Copyright.html can be found at the * * root level of an installed copy of the electronic HDF5 document set and * * is linked from the top-level documents page. It can also be found at * * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have * * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /* Programmer: Robb Matzke * Wednesday, October 8, 1997 * * Purpose: Indexed (chunked) I/O functions. The logical * multi-dimensional data space is regularly partitioned into * same-sized "chunks", the first of which is aligned with the * logical origin. The chunks are given a multi-dimensional * index which is used as a lookup key in a B-tree that maps * chunk index to disk address. Each chunk can be compressed * independently and the chunks may move around in the file as * their storage requirements change. * * Cache: Disk I/O is performed in units of chunks and H5MF_alloc() * contains code to optionally align chunks on disk block * boundaries for performance. * * The chunk cache is an extendible hash indexed by a function * of storage B-tree address and chunk N-dimensional offset * within the dataset. Collisions are not resolved -- one of * the two chunks competing for the hash slot must be preempted * from the cache. All entries in the hash also participate in * a doubly-linked list and entries are penalized by moving them * toward the front of the list. When a new chunk is about to * be added to the cache the heap is pruned by preempting * entries near the front of the list to make room for the new * entry which is added to the end of the list. */ #define H5B_PACKAGE /*suppress error about including H5Bpkg */ #define H5F_PACKAGE /*suppress error about including H5Fpkg */ /* Pablo information */ /* (Put before include files to avoid problems with inline functions) */ #define PABLO_MASK H5Fistore_mask #include "H5private.h" /* Generic Functions */ #include "H5Bpkg.h" /* B-link trees */ #include "H5Dprivate.h" /* Datasets */ #include "H5Eprivate.h" /* Error handling */ #include "H5Fpkg.h" /* Files */ #include "H5FDprivate.h" /* File drivers */ #include "H5FLprivate.h" /* Free Lists */ #include "H5Iprivate.h" /* IDs */ #include "H5MFprivate.h" /* File space management */ #include "H5MMprivate.h" /* Memory management */ #include "H5Oprivate.h" /* Object headers */ #include "H5Pprivate.h" /* Property lists */ #include "H5Sprivate.h" /* Dataspaces */ #include "H5Vprivate.h" /* Vector and array functions */ /* * Feature: If this constant is defined then every cache preemption and load * causes a character to be printed on the standard error stream: * * `.': Entry was preempted because it has been completely read or * completely written but not partially read and not partially * written. This is often a good reason for preemption because such * a chunk will be unlikely to be referenced in the near future. * * `:': Entry was preempted because it hasn't been used recently. * * `#': Entry was preempted because another chunk collided with it. This * is usually a relatively bad thing. If there are too many of * these then the number of entries in the cache can be increased. * * c: Entry was preempted because the file is closing. * * w: A chunk read operation was eliminated because the library is * about to write new values to the entire chunk. This is a good * thing, especially on files where the chunk size is the same as * the disk block size, chunks are aligned on disk block boundaries, * and the operating system can also eliminate a read operation. */ /*#define H5F_ISTORE_DEBUG */ /* Interface initialization */ static int interface_initialize_g = 0; #define INTERFACE_INIT NULL /* * Given a B-tree node return the dimensionality of the chunks pointed to by * that node. */ #define H5F_ISTORE_NDIMS(X) ((int)(((X)->sizeof_rkey-8)/8)) /* Raw data chunks are cached. Each entry in the cache is: */ typedef struct H5F_rdcc_ent_t { hbool_t locked; /*entry is locked in cache */ hbool_t dirty; /*needs to be written to disk? */ H5O_layout_t *layout; /*the layout message */ double split_ratios[3];/*B-tree node splitting ratios */ H5O_pline_t *pline; /*filter pipeline message */ hssize_t offset[H5O_LAYOUT_NDIMS]; /*chunk name */ size_t rd_count; /*bytes remaining to be read */ size_t wr_count; /*bytes remaining to be written */ size_t chunk_size; /*size of a chunk */ size_t alloc_size; /*amount allocated for the chunk */ uint8_t *chunk; /*the unfiltered chunk data */ unsigned idx; /*index in hash table */ struct H5F_rdcc_ent_t *next;/*next item in doubly-linked list */ struct H5F_rdcc_ent_t *prev;/*previous item in doubly-linked list */ } H5F_rdcc_ent_t; typedef H5F_rdcc_ent_t *H5F_rdcc_ent_ptr_t; /* For free lists */ /* * B-tree key. A key contains the minimum logical N-dimensional address and * the logical size of the chunk to which this key refers. The * fastest-varying dimension is assumed to reference individual bytes of the * array, so a 100-element 1-d array of 4-byte integers would really be a 2-d * array with the slow varying dimension of size 100 and the fast varying * dimension of size 4 (the storage dimensionality has very little to do with * the real dimensionality). * * Only the first few values of the OFFSET and SIZE fields are actually * stored on disk, depending on the dimensionality. * * The chunk's file address is part of the B-tree and not part of the key. */ typedef struct H5F_istore_key_t { size_t nbytes; /*size of stored data */ hssize_t offset[H5O_LAYOUT_NDIMS]; /*logical offset to start*/ unsigned filter_mask; /*excluded filters */ } H5F_istore_key_t; typedef struct H5F_istore_ud1_t { H5F_istore_key_t key; /*key values */ haddr_t addr; /*file address of chunk */ H5O_layout_t mesg; /*layout message */ hsize_t total_storage; /*output from iterator */ FILE *stream; /*debug output stream */ hsize_t *dims; /*dataset dimensions */ } H5F_istore_ud1_t; #define H5F_HASH_DIVISOR 1 /* Attempt to spread out the hashing */ /* This should be the same size as the alignment of */ /* of the smallest file format object written to the file. */ #define H5F_HASH(F,ADDR) H5F_addr_hash((ADDR/H5F_HASH_DIVISOR),(F)->shared->rdcc.nslots) /* Private prototypes */ static haddr_t H5F_istore_get_addr(H5F_t *f, hid_t dxpl_id, const H5O_layout_t *layout, const hssize_t offset[], H5F_istore_ud1_t *_udata); static void *H5F_istore_chunk_alloc(size_t size, const H5O_pline_t *pline); static void *H5F_istore_chunk_xfree(void *chk, const H5O_pline_t *pline); /* B-tree iterator callbacks */ static int H5F_istore_iter_allocated(H5F_t *f, hid_t dxpl_id, void *left_key, haddr_t addr, void *right_key, void *_udata); static int H5F_istore_iter_dump(H5F_t *f, hid_t dxpl_id, void *left_key, haddr_t addr, void *right_key, void *_udata); static int H5F_istore_prune_extent(H5F_t *f, hid_t dxpl_id, void *_lt_key, haddr_t addr, void *_rt_key, void *_udata); /* B-tree callbacks */ static size_t H5F_istore_sizeof_rkey(H5F_t *f, const void *_udata); static herr_t H5F_istore_new_node(H5F_t *f, hid_t dxpl_id, H5B_ins_t, void *_lt_key, void *_udata, void *_rt_key, haddr_t *addr_p /*out*/); static int H5F_istore_cmp2(H5F_t *f, hid_t dxpl_id, void *_lt_key, void *_udata, void *_rt_key); static int H5F_istore_cmp3(H5F_t *f, hid_t dxpl_id, void *_lt_key, void *_udata, void *_rt_key); static herr_t H5F_istore_found(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *_lt_key, void *_udata, const void *_rt_key); static H5B_ins_t H5F_istore_insert(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_lt_key, hbool_t *lt_key_changed, void *_md_key, void *_udata, void *_rt_key, hbool_t *rt_key_changed, haddr_t *new_node/*out*/); static H5B_ins_t H5F_istore_remove( H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_lt_key, hbool_t *lt_key_changed, void *_udata, void *_rt_key, hbool_t *rt_key_changed); static herr_t H5F_istore_decode_key(H5F_t *f, H5B_t *bt, uint8_t *raw, void *_key); static herr_t H5F_istore_encode_key(H5F_t *f, H5B_t *bt, uint8_t *raw, void *_key); static herr_t H5F_istore_debug_key(FILE *stream, H5F_t *f, hid_t dxpl_id, int indent, int fwidth, const void *key, const void *udata); /* inherits B-tree like properties from H5B */ H5B_class_t H5B_ISTORE[1] = {{ H5B_ISTORE_ID, /*id */ sizeof(H5F_istore_key_t), /*sizeof_nkey */ H5F_istore_sizeof_rkey, /*get_sizeof_rkey */ H5F_istore_new_node, /*new */ H5F_istore_cmp2, /*cmp2 */ H5F_istore_cmp3, /*cmp3 */ H5F_istore_found, /*found */ H5F_istore_insert, /*insert */ FALSE, /*follow min branch? */ FALSE, /*follow max branch? */ H5F_istore_remove, /*remove */ H5F_istore_decode_key, /*decode */ H5F_istore_encode_key, /*encode */ H5F_istore_debug_key, /*debug */ }}; /* Declare a free list to manage H5F_rdcc_ent_t objects */ H5FL_DEFINE_STATIC(H5F_rdcc_ent_t); /* Declare a free list to manage the H5F_rdcc_ent_ptr_t sequence information */ H5FL_SEQ_DEFINE_STATIC(H5F_rdcc_ent_ptr_t); /* Declare a free list to manage the chunk sequence information */ H5FL_BLK_DEFINE_STATIC(chunk); /*------------------------------------------------------------------------- * Function: H5F_istore_sizeof_rkey * * Purpose: Returns the size of a raw key for the specified UDATA. The * size of the key is dependent on the number of dimensions for * the object to which this B-tree points. The dimensionality * of the UDATA is the only portion that's referenced here. * * Return: Success: Size of raw key in bytes. * * Failure: abort() * * Programmer: Robb Matzke * Wednesday, October 8, 1997 * * Modifications: * *------------------------------------------------------------------------- */ static size_t H5F_istore_sizeof_rkey(H5F_t UNUSED *f, const void *_udata) { const H5F_istore_ud1_t *udata = (const H5F_istore_ud1_t *) _udata; size_t nbytes; /* Use FUNC_ENTER_NOAPI_NOINIT_NOFUNC here to avoid performance issues */ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5F_istore_sizeof_rkey); assert(udata); assert(udata->mesg.ndims > 0 && udata->mesg.ndims <= H5O_LAYOUT_NDIMS); nbytes = 4 + /*storage size */ 4 + /*filter mask */ udata->mesg.ndims*8; /*dimension indices */ FUNC_LEAVE_NOAPI(nbytes); } /*------------------------------------------------------------------------- * Function: H5F_istore_decode_key * * Purpose: Decodes a raw key into a native key for the B-tree * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Friday, October 10, 1997 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5F_istore_decode_key(H5F_t UNUSED *f, H5B_t *bt, uint8_t *raw, void *_key) { H5F_istore_key_t *key = (H5F_istore_key_t *) _key; int i; int ndims = H5F_ISTORE_NDIMS(bt); herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_decode_key, FAIL); /* check args */ assert(f); assert(bt); assert(raw); assert(key); assert(ndims>0 && ndims<=H5O_LAYOUT_NDIMS); /* decode */ UINT32DECODE(raw, key->nbytes); UINT32DECODE(raw, key->filter_mask); for (i=0; ioffset[i]); done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_encode_key * * Purpose: Encode a key from native format to raw format. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Friday, October 10, 1997 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5F_istore_encode_key(H5F_t UNUSED *f, H5B_t *bt, uint8_t *raw, void *_key) { H5F_istore_key_t *key = (H5F_istore_key_t *) _key; int ndims = H5F_ISTORE_NDIMS(bt); int i; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_encode_key, FAIL); /* check args */ assert(f); assert(bt); assert(raw); assert(key); assert(ndims>0 && ndims<=H5O_LAYOUT_NDIMS); /* encode */ UINT32ENCODE(raw, key->nbytes); UINT32ENCODE(raw, key->filter_mask); for (i=0; ioffset[i]); done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_debug_key * * Purpose: Prints a key. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Thursday, April 16, 1998 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5F_istore_debug_key (FILE *stream, H5F_t UNUSED *f, hid_t UNUSED dxpl_id, int indent, int fwidth, const void *_key, const void *_udata) { const H5F_istore_key_t *key = (const H5F_istore_key_t *)_key; const H5F_istore_ud1_t *udata = (const H5F_istore_ud1_t *)_udata; unsigned u; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_debug_key, FAIL); assert (key); HDfprintf(stream, "%*s%-*s %Zd bytes\n", indent, "", fwidth, "Chunk size:", key->nbytes); HDfprintf(stream, "%*s%-*s 0x%08x\n", indent, "", fwidth, "Filter mask:", key->filter_mask); HDfprintf(stream, "%*s%-*s {", indent, "", fwidth, "Logical offset:"); for (u=0; umesg.ndims; u++) HDfprintf (stream, "%s%Hd", u?", ":"", key->offset[u]); HDfputs ("}\n", stream); done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_cmp2 * * Purpose: Compares two keys sort of like strcmp(). The UDATA pointer * is only to supply extra information not carried in the keys * (in this case, the dimensionality) and is not compared * against the keys. * * Return: Success: -1 if LT_KEY is less than RT_KEY; * 1 if LT_KEY is greater than RT_KEY; * 0 if LT_KEY and RT_KEY are equal. * * Failure: FAIL (same as LT_KEYmesg.ndims > 0 && udata->mesg.ndims <= H5O_LAYOUT_NDIMS); /* Compare the offsets but ignore the other fields */ ret_value = H5V_vector_cmp_s(udata->mesg.ndims, lt_key->offset, rt_key->offset); done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_cmp3 * * Purpose: Compare the requested datum UDATA with the left and right * keys of the B-tree. * * Return: Success: negative if the min_corner of UDATA is less * than the min_corner of LT_KEY. * * positive if the min_corner of UDATA is * greater than or equal the min_corner of * RT_KEY. * * zero otherwise. The min_corner of UDATA is * not necessarily contained within the address * space represented by LT_KEY, but a key that * would describe the UDATA min_corner address * would fall lexicographically between LT_KEY * and RT_KEY. * * Failure: FAIL (same as UDATA < LT_KEY) * * Programmer: Robb Matzke * Wednesday, October 8, 1997 * * Modifications: * *------------------------------------------------------------------------- */ static int H5F_istore_cmp3(H5F_t UNUSED *f, hid_t UNUSED dxpl_id, void *_lt_key, void *_udata, void *_rt_key) { H5F_istore_key_t *lt_key = (H5F_istore_key_t *) _lt_key; H5F_istore_key_t *rt_key = (H5F_istore_key_t *) _rt_key; H5F_istore_ud1_t *udata = (H5F_istore_ud1_t *) _udata; int ret_value = 0; FUNC_ENTER_NOAPI(H5F_istore_cmp3, FAIL); assert(lt_key); assert(rt_key); assert(udata); assert(udata->mesg.ndims > 0 && udata->mesg.ndims <= H5O_LAYOUT_NDIMS); if (H5V_vector_lt_s(udata->mesg.ndims, udata->key.offset, lt_key->offset)) { ret_value = -1; } else if (H5V_vector_ge_s(udata->mesg.ndims, udata->key.offset, rt_key->offset)) { ret_value = 1; } done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_new_node * * Purpose: Adds a new entry to an i-storage B-tree. We can assume that * the domain represented by UDATA doesn't intersect the domain * already represented by the B-tree. * * Return: Success: Non-negative. The address of leaf is returned * through the ADDR argument. It is also added * to the UDATA. * * Failure: Negative * * Programmer: Robb Matzke * Tuesday, October 14, 1997 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5F_istore_new_node(H5F_t *f, hid_t dxpl_id, H5B_ins_t op, void *_lt_key, void *_udata, void *_rt_key, haddr_t *addr_p/*out*/) { H5F_istore_key_t *lt_key = (H5F_istore_key_t *) _lt_key; H5F_istore_key_t *rt_key = (H5F_istore_key_t *) _rt_key; H5F_istore_ud1_t *udata = (H5F_istore_ud1_t *) _udata; unsigned u; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_new_node, FAIL); /* check args */ assert(f); assert(lt_key); assert(rt_key); assert(udata); assert(udata->mesg.ndims > 0 && udata->mesg.ndims < H5O_LAYOUT_NDIMS); assert(addr_p); /* Allocate new storage */ assert (udata->key.nbytes > 0); H5_CHECK_OVERFLOW( udata->key.nbytes ,size_t, hsize_t); if (HADDR_UNDEF==(*addr_p=H5MF_alloc(f, H5FD_MEM_DRAW, dxpl_id, (hsize_t)udata->key.nbytes))) HGOTO_ERROR(H5E_IO, H5E_CANTINIT, FAIL, "couldn't allocate new file storage"); udata->addr = *addr_p; /* * The left key describes the storage of the UDATA chunk being * inserted into the tree. */ lt_key->nbytes = udata->key.nbytes; lt_key->filter_mask = udata->key.filter_mask; for (u=0; umesg.ndims; u++) lt_key->offset[u] = udata->key.offset[u]; /* * The right key might already be present. If not, then add a zero-width * chunk. */ if (H5B_INS_LEFT != op) { rt_key->nbytes = 0; rt_key->filter_mask = 0; for (u=0; umesg.ndims; u++) { assert (udata->mesg.dim[u] < HSSIZET_MAX); assert (udata->key.offset[u]+(hssize_t)(udata->mesg.dim[u]) > udata->key.offset[u]); rt_key->offset[u] = udata->key.offset[u] + (hssize_t)(udata->mesg.dim[u]); } } done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_found * * Purpose: This function is called when the B-tree search engine has * found the leaf entry that points to a chunk of storage that * contains the beginning of the logical address space * represented by UDATA. The LT_KEY is the left key (the one * that describes the chunk) and RT_KEY is the right key (the * one that describes the next or last chunk). * * Note: It's possible that the chunk isn't really found. For * instance, in a sparse dataset the requested chunk might fall * between two stored chunks in which case this function is * called with the maximum stored chunk indices less than the * requested chunk indices. * * Return: Non-negative on success with information about the chunk * returned through the UDATA argument. Negative on failure. * * Programmer: Robb Matzke * Thursday, October 9, 1997 * * Modifications: * Robb Matzke, 1999-07-28 * The ADDR argument is passed by value. *------------------------------------------------------------------------- */ static herr_t H5F_istore_found(H5F_t UNUSED *f, hid_t UNUSED dxpl_id, haddr_t addr, const void *_lt_key, void *_udata, const void UNUSED *_rt_key) { H5F_istore_ud1_t *udata = (H5F_istore_ud1_t *) _udata; const H5F_istore_key_t *lt_key = (const H5F_istore_key_t *) _lt_key; unsigned u; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_found, FAIL); /* Check arguments */ assert(f); assert(H5F_addr_defined(addr)); assert(udata); assert(lt_key); /* Is this *really* the requested chunk? */ for (u=0; umesg.ndims; u++) { if (udata->key.offset[u] >= lt_key->offset[u]+(hssize_t)(udata->mesg.dim[u])) HGOTO_DONE(FAIL); } /* Initialize return values */ udata->addr = addr; udata->key.nbytes = lt_key->nbytes; udata->key.filter_mask = lt_key->filter_mask; assert (lt_key->nbytes>0); for (u = 0; u < udata->mesg.ndims; u++) udata->key.offset[u] = lt_key->offset[u]; done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_insert * * Purpose: This function is called when the B-tree insert engine finds * the node to use to insert new data. The UDATA argument * points to a struct that describes the logical addresses being * added to the file. This function allocates space for the * data and returns information through UDATA describing a * file chunk to receive (part of) the data. * * The LT_KEY is always the key describing the chunk of file * memory at address ADDR. On entry, UDATA describes the logical * addresses for which storage is being requested (through the * `offset' and `size' fields). On return, UDATA describes the * logical addresses contained in a chunk on disk. * * Return: Success: An insertion command for the caller, one of * the H5B_INS_* constants. The address of the * new chunk is returned through the NEW_NODE * argument. * * Failure: H5B_INS_ERROR * * Programmer: Robb Matzke * Thursday, October 9, 1997 * * Modifications: * Robb Matzke, 1999-07-28 * The ADDR argument is passed by value. The NEW_NODE argument * is renamed NEW_NODE_P. *------------------------------------------------------------------------- */ static H5B_ins_t H5F_istore_insert(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_lt_key, hbool_t UNUSED *lt_key_changed, void *_md_key, void *_udata, void *_rt_key, hbool_t UNUSED *rt_key_changed, haddr_t *new_node_p/*out*/) { H5F_istore_key_t *lt_key = (H5F_istore_key_t *) _lt_key; H5F_istore_key_t *md_key = (H5F_istore_key_t *) _md_key; H5F_istore_key_t *rt_key = (H5F_istore_key_t *) _rt_key; H5F_istore_ud1_t *udata = (H5F_istore_ud1_t *) _udata; int cmp; unsigned u; H5B_ins_t ret_value; FUNC_ENTER_NOAPI(H5F_istore_insert, H5B_INS_ERROR); /* check args */ assert(f); assert(H5F_addr_defined(addr)); assert(lt_key); assert(lt_key_changed); assert(md_key); assert(udata); assert(rt_key); assert(rt_key_changed); assert(new_node_p); cmp = H5F_istore_cmp3(f, dxpl_id, lt_key, udata, rt_key); assert(cmp <= 0); if (cmp < 0) { /* Negative indices not supported yet */ assert("HDF5 INTERNAL ERROR -- see rpm" && 0); HGOTO_ERROR(H5E_STORAGE, H5E_UNSUPPORTED, H5B_INS_ERROR, "internal error"); } else if (H5V_vector_eq_s (udata->mesg.ndims, udata->key.offset, lt_key->offset) && lt_key->nbytes>0) { /* * Already exists. If the new size is not the same as the old size * then we should reallocate storage. */ if (lt_key->nbytes != udata->key.nbytes) { /* Currently, the old chunk data is "thrown away" after the space is reallocated, * so avoid data copy in H5MF_realloc() call by just free'ing the space and * allocating new space. * * This should keep the file smaller also, by freeing the space and then * allocating new space, instead of vice versa (in H5MF_realloc). * * QAK - 11/19/2002 */ #ifdef OLD_WAY if (HADDR_UNDEF==(*new_node_p=H5MF_realloc(f, H5FD_MEM_DRAW, addr, (hsize_t)lt_key->nbytes, (hsize_t)udata->key.nbytes))) HGOTO_ERROR (H5E_STORAGE, H5E_NOSPACE, H5B_INS_ERROR, "unable to reallocate chunk storage"); #else /* OLD_WAY */ H5_CHECK_OVERFLOW( lt_key->nbytes ,size_t, hsize_t); if (H5MF_xfree(f, H5FD_MEM_DRAW, dxpl_id, addr, (hsize_t)lt_key->nbytes)<0) HGOTO_ERROR(H5E_STORAGE, H5E_CANTFREE, H5B_INS_ERROR, "unable to free chunk"); H5_CHECK_OVERFLOW( udata->key.nbytes ,size_t, hsize_t); if (HADDR_UNDEF==(*new_node_p=H5MF_alloc(f, H5FD_MEM_DRAW, dxpl_id, (hsize_t)udata->key.nbytes))) HGOTO_ERROR(H5E_STORAGE, H5E_NOSPACE, H5B_INS_ERROR, "unable to reallocate chunk"); #endif /* OLD_WAY */ lt_key->nbytes = udata->key.nbytes; lt_key->filter_mask = udata->key.filter_mask; *lt_key_changed = TRUE; udata->addr = *new_node_p; ret_value = H5B_INS_CHANGE; } else { udata->addr = addr; ret_value = H5B_INS_NOOP; } } else if (H5V_hyper_disjointp(udata->mesg.ndims, lt_key->offset, udata->mesg.dim, udata->key.offset, udata->mesg.dim)) { assert(H5V_hyper_disjointp(udata->mesg.ndims, rt_key->offset, udata->mesg.dim, udata->key.offset, udata->mesg.dim)); /* * Split this node, inserting the new new node to the right of the * current node. The MD_KEY is where the split occurs. */ md_key->nbytes = udata->key.nbytes; md_key->filter_mask = udata->key.filter_mask; for (u=0; umesg.ndims; u++) { assert(0 == udata->key.offset[u] % udata->mesg.dim[u]); md_key->offset[u] = udata->key.offset[u]; } /* * Allocate storage for the new chunk */ H5_CHECK_OVERFLOW( udata->key.nbytes ,size_t, hsize_t); if (HADDR_UNDEF==(*new_node_p=H5MF_alloc(f, H5FD_MEM_DRAW, dxpl_id, (hsize_t)udata->key.nbytes))) HGOTO_ERROR(H5E_STORAGE, H5E_NOSPACE, H5B_INS_ERROR, "file allocation failed"); udata->addr = *new_node_p; ret_value = H5B_INS_RIGHT; } else { assert("HDF5 INTERNAL ERROR -- see rpm" && 0); HGOTO_ERROR(H5E_IO, H5E_UNSUPPORTED, H5B_INS_ERROR, "internal error"); } done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_iter_allocated * * Purpose: Simply counts the number of chunks for a dataset. * * Return: Success: Non-negative * * Failure: Negative * * Programmer: Robb Matzke * Wednesday, April 21, 1999 * * Modifications: * Robb Matzke, 1999-07-28 * The ADDR argument is passed by value. * * Quincey Koziol, 2002-04-22 * Changed to callback from H5B_iterate *------------------------------------------------------------------------- */ static int H5F_istore_iter_allocated (H5F_t UNUSED *f, hid_t UNUSED dxpl_id, void *_lt_key, haddr_t UNUSED addr, void UNUSED *_rt_key, void *_udata) { H5F_istore_ud1_t *bt_udata = (H5F_istore_ud1_t *)_udata; H5F_istore_key_t *lt_key = (H5F_istore_key_t *)_lt_key; FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5F_istore_iter_allocated); bt_udata->total_storage += lt_key->nbytes; FUNC_LEAVE_NOAPI(H5B_ITER_CONT); } /* H5F_istore_iter_allocated() */ /*------------------------------------------------------------------------- * Function: H5F_istore_iter_dump * * Purpose: If the UDATA.STREAM member is non-null then debugging * information is written to that stream. * * Return: Success: Non-negative * * Failure: Negative * * Programmer: Robb Matzke * Wednesday, April 21, 1999 * * Modifications: * Robb Matzke, 1999-07-28 * The ADDR argument is passed by value. * * Quincey Koziol, 2002-04-22 * Changed to callback from H5B_iterate *------------------------------------------------------------------------- */ static int H5F_istore_iter_dump (H5F_t UNUSED *f, hid_t UNUSED dxpl_id, void *_lt_key, haddr_t UNUSED addr, void UNUSED *_rt_key, void *_udata) { H5F_istore_ud1_t *bt_udata = (H5F_istore_ud1_t *)_udata; H5F_istore_key_t *lt_key = (H5F_istore_key_t *)_lt_key; unsigned u; FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5F_istore_iter_dump); if (bt_udata->stream) { if (0==bt_udata->total_storage) { fprintf(bt_udata->stream, " Flags Bytes Address Logical Offset\n"); fprintf(bt_udata->stream, " ========== ======== ========== " "==============================\n"); } HDfprintf(bt_udata->stream, " 0x%08x %8Zu %10a [", lt_key->filter_mask, lt_key->nbytes, addr); for (u=0; umesg.ndims; u++) HDfprintf(bt_udata->stream, "%s%Hd", u?", ":"", lt_key->offset[u]); HDfputs("]\n", bt_udata->stream); /* Use "total storage" information as flag for printing headers */ bt_udata->total_storage++; } FUNC_LEAVE_NOAPI(H5B_ITER_CONT); } /* H5F_istore_iter_dump() */ /*------------------------------------------------------------------------- * Function: H5F_istore_init * * Purpose: Initialize the raw data chunk cache for a file. This is * called when the file handle is initialized. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Monday, May 18, 1998 * * Modifications: * *------------------------------------------------------------------------- */ herr_t H5F_istore_init (H5F_t *f) { H5F_rdcc_t *rdcc = &(f->shared->rdcc); herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_init, FAIL); HDmemset (rdcc, 0, sizeof(H5F_rdcc_t)); if (f->shared->rdcc_nbytes>0 && f->shared->rdcc_nelmts>0) { rdcc->nslots = f->shared->rdcc_nelmts; rdcc->slot = H5FL_SEQ_CALLOC (H5F_rdcc_ent_ptr_t,rdcc->nslots); if (NULL==rdcc->slot) HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed"); } done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_flush_entry * * Purpose: Writes a chunk to disk. If RESET is non-zero then the * entry is cleared -- it's slightly faster to flush a chunk if * the RESET flag is turned on because it results in one fewer * memory copy. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Thursday, May 21, 1998 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5F_istore_flush_entry(H5F_t *f, const H5D_dxpl_cache_t *dxpl_cache, hid_t dxpl_id, H5F_rdcc_ent_t *ent, hbool_t reset) { herr_t ret_value=SUCCEED; /*return value */ unsigned u; /*counters */ void *buf=NULL; /*temporary buffer */ size_t alloc; /*bytes allocated for BUF */ hbool_t point_of_no_return = FALSE; FUNC_ENTER_NOAPI_NOINIT(H5F_istore_flush_entry); assert(f); assert(ent); assert(!ent->locked); buf = ent->chunk; if (ent->dirty) { H5F_istore_ud1_t udata; /*pass through B-tree */ udata.mesg = *(ent->layout); udata.key.filter_mask = 0; udata.addr = HADDR_UNDEF; udata.key.nbytes = ent->chunk_size; for (u=0; ulayout->ndims; u++) { udata.key.offset[u] = ent->offset[u]; } alloc = ent->alloc_size; /* Should the chunk be filtered before writing it to disk? */ if (ent->pline && ent->pline->nused) { if (!reset) { /* * Copy the chunk to a new buffer before running it through * the pipeline because we'll want to save the original buffer * for later. */ alloc = ent->chunk_size; if (NULL==(buf = H5MM_malloc(alloc))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed for pipeline"); HDmemcpy(buf, ent->chunk, ent->chunk_size); } else { /* * If we are reseting and something goes wrong after this * point then it's too late to recover because we may have * destroyed the original data by calling H5Z_pipeline(). * The only safe option is to continue with the reset * even if we can't write the data to disk. */ point_of_no_return = TRUE; ent->chunk = NULL; } if (H5Z_pipeline(ent->pline, 0, &(udata.key.filter_mask), dxpl_cache->err_detect, dxpl_cache->filter_cb, &(udata.key.nbytes), &alloc, &buf)<0) { HGOTO_ERROR(H5E_PLINE, H5E_WRITEERROR, FAIL, "output pipeline failed"); } } /* * Create the chunk it if it doesn't exist, or reallocate the chunk if * its size changed. Then write the data into the file. */ if (H5B_insert(f, dxpl_id, H5B_ISTORE, ent->layout->addr, ent->split_ratios, &udata)<0) HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "unable to allocate chunk"); if (H5F_block_write(f, H5FD_MEM_DRAW, udata.addr, udata.key.nbytes, dxpl_id, buf)<0) HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "unable to write raw data to file"); /* Mark cache entry as clean */ ent->dirty = FALSE; f->shared->rdcc.nflushes++; } /* Reset, but do not free or removed from list */ if (reset) { point_of_no_return = FALSE; ent->layout = H5O_free(H5O_LAYOUT_ID, ent->layout); if (buf==ent->chunk) buf = NULL; if(ent->chunk!=NULL) ent->chunk = H5F_istore_chunk_xfree(ent->chunk,ent->pline); ent->pline = H5O_free(H5O_PLINE_ID, ent->pline); } done: /* Free the temp buffer only if it's different than the entry chunk */ if (buf!=ent->chunk) H5MM_xfree(buf); /* * If we reached the point of no return then we have no choice but to * reset the entry. This can only happen if RESET is true but the * output pipeline failed. Do not free the entry or remove it from the * list. */ if (ret_value<0 && point_of_no_return) { ent->layout = H5O_free(H5O_LAYOUT_ID, ent->layout); if(ent->chunk) ent->chunk = H5F_istore_chunk_xfree(ent->chunk,ent->pline); ent->pline = H5O_free(H5O_PLINE_ID, ent->pline); } FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_preempt * * Purpose: Preempts the specified entry from the cache, flushing it to * disk if necessary. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Thursday, May 21, 1998 * * Modifications: * Pedro Vicente, March 28, 2002 * Added flush parameter that switches the call to H5F_istore_flush_entry * The call with FALSE is used by the H5F_istore_prune_by_extent function * *------------------------------------------------------------------------- */ static herr_t H5F_istore_preempt(H5F_t *f, const H5D_dxpl_cache_t *dxpl_cache, hid_t dxpl_id, H5F_rdcc_ent_t * ent, hbool_t flush) { H5F_rdcc_t *rdcc = &(f->shared->rdcc); herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5F_istore_preempt); assert(f); assert(ent); assert(!ent->locked); assert(ent->idx < rdcc->nslots); if(flush) { /* Flush */ if(H5F_istore_flush_entry(f, dxpl_cache, dxpl_id, ent, TRUE) < 0) HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "cannot flush indexed storage buffer"); } else { /* Don't flush, just free chunk */ ent->layout = H5O_free(H5O_LAYOUT_ID, ent->layout); if(ent->chunk != NULL) ent->chunk = H5F_istore_chunk_xfree(ent->chunk,ent->pline); ent->pline = H5O_free(H5O_PLINE_ID, ent->pline); } /* Unlink from list */ if(ent->prev) ent->prev->next = ent->next; else rdcc->head = ent->next; if(ent->next) ent->next->prev = ent->prev; else rdcc->tail = ent->prev; ent->prev = ent->next = NULL; /* Remove from cache */ rdcc->slot[ent->idx] = NULL; ent->idx = UINT_MAX; rdcc->nbytes -= ent->chunk_size; --rdcc->nused; /* Free */ H5FL_FREE(H5F_rdcc_ent_t, ent); done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_flush * * Purpose: Writes all dirty chunks to disk and optionally preempts them * from the cache. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Thursday, May 21, 1998 * * Modifications: * Pedro Vicente, March 28, 2002 * Added TRUE parameter to the call to H5F_istore_preempt * *------------------------------------------------------------------------- */ herr_t H5F_istore_flush (H5F_t *f, hid_t dxpl_id, unsigned flags) { H5D_dxpl_cache_t dxpl_cache; /* Cached data transfer properties */ H5F_rdcc_t *rdcc = &(f->shared->rdcc); int nerrors=0; H5F_rdcc_ent_t *ent=NULL, *next=NULL; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_flush, FAIL); /* Fill the DXPL cache values for later use */ if (H5D_get_dxpl_cache(dxpl_id,&dxpl_cache)<0) HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill dxpl cache") for (ent=rdcc->head; ent; ent=next) { next = ent->next; if ((flags&H5F_FLUSH_CLEAR_ONLY)) { /* Just mark cache entry as clean */ ent->dirty = FALSE; } /* end if */ else if ((flags&H5F_FLUSH_INVALIDATE)) { if (H5F_istore_preempt(f, &dxpl_cache, dxpl_id, ent, TRUE )<0) nerrors++; } else { if (H5F_istore_flush_entry(f, &dxpl_cache, dxpl_id, ent, FALSE)<0) nerrors++; } } if (nerrors) HGOTO_ERROR (H5E_IO, H5E_CANTFLUSH, FAIL, "unable to flush one or more raw data chunks"); done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_dest * * Purpose: Destroy the entire chunk cache by flushing dirty entries, * preempting all entries, and freeing the cache itself. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Thursday, May 21, 1998 * * Modifications: * Pedro Vicente, March 28, 2002 * Added TRUE parameter to the call to H5F_istore_preempt * *------------------------------------------------------------------------- */ herr_t H5F_istore_dest (H5F_t *f, hid_t dxpl_id) { H5D_dxpl_cache_t dxpl_cache; /* Cached data transfer properties */ H5F_rdcc_t *rdcc = &(f->shared->rdcc); int nerrors=0; H5F_rdcc_ent_t *ent=NULL, *next=NULL; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_dest, FAIL); /* Fill the DXPL cache values for later use */ if (H5D_get_dxpl_cache(dxpl_id,&dxpl_cache)<0) HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill dxpl cache") for (ent=rdcc->head; ent; ent=next) { #ifdef H5F_ISTORE_DEBUG HDfputc('c', stderr); HDfflush(stderr); #endif next = ent->next; if (H5F_istore_preempt(f, &dxpl_cache, dxpl_id, ent, TRUE )<0) nerrors++; } if (nerrors) HGOTO_ERROR (H5E_IO, H5E_CANTFLUSH, FAIL, "unable to flush one or more raw data chunks"); H5FL_SEQ_FREE (H5F_rdcc_ent_ptr_t,rdcc->slot); HDmemset (rdcc, 0, sizeof(H5F_rdcc_t)); done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_prune * * Purpose: Prune the cache by preempting some things until the cache has * room for something which is SIZE bytes. Only unlocked * entries are considered for preemption. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Thursday, May 21, 1998 * * Modifications: * Pedro Vicente, March 28, 2002 * TRUE parameter to the call to H5F_istore_preempt * *------------------------------------------------------------------------- */ static herr_t H5F_istore_prune (H5F_t *f, const H5D_dxpl_cache_t *dxpl_cache, hid_t dxpl_id, size_t size) { int i, j, nerrors=0; H5F_rdcc_t *rdcc = &(f->shared->rdcc); size_t total = f->shared->rdcc_nbytes; const int nmeth=2; /*number of methods */ int w[1]; /*weighting as an interval */ H5F_rdcc_ent_t *p[2], *cur; /*list pointers */ H5F_rdcc_ent_t *n[2]; /*list next pointers */ herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5F_istore_prune); /* * Preemption is accomplished by having multiple pointers (currently two) * slide down the list beginning at the head. Pointer p(N+1) will start * traversing the list when pointer pN reaches wN percent of the original * list. In other words, preemption method N gets to consider entries in * approximate least recently used order w0 percent before method N+1 * where 100% means tha method N will run to completion before method N+1 * begins. The pointers participating in the list traversal are each * given a chance at preemption before any of the pointers are advanced. */ w[0] = (int)(rdcc->nused * f->shared->rdcc_w0); p[0] = rdcc->head; p[1] = NULL; while ((p[0] || p[1]) && rdcc->nbytes+size>total) { /* Introduce new pointers */ for (i=0; ihead; /* Compute next value for each pointer */ for (i=0; inext : NULL; /* Give each method a chance */ for (i=0; inbytes+size>total; i++) { if (0==i && p[0] && !p[0]->locked && ((0==p[0]->rd_count && 0==p[0]->wr_count) || (0==p[0]->rd_count && p[0]->chunk_size==p[0]->wr_count) || (p[0]->chunk_size==p[0]->rd_count && 0==p[0]->wr_count))) { /* * Method 0: Preempt entries that have been completely written * and/or completely read but not entries that are partially * written or partially read. */ cur = p[0]; #ifdef H5F_ISTORE_DEBUG HDputc('.', stderr); HDfflush(stderr); #endif } else if (1==i && p[1] && !p[1]->locked) { /* * Method 1: Preempt the entry without regard to * considerations other than being locked. This is the last * resort preemption. */ cur = p[1]; #ifdef H5F_ISTORE_DEBUG HDputc(':', stderr); HDfflush(stderr); #endif } else { /* Nothing to preempt at this point */ cur= NULL; } if (cur) { for (j=0; jnext; } if (H5F_istore_preempt(f, dxpl_cache, dxpl_id, cur, TRUE)<0) nerrors++; } } /* Advance pointers */ for (i=0; ishared->rdcc);/*raw data chunk cache*/ H5F_rdcc_ent_t *ent = NULL; /*cache entry */ unsigned u; /*counters */ size_t chunk_size=0; /*size of a chunk */ void *chunk=NULL; /*the file chunk */ void *ret_value; /*return value */ FUNC_ENTER_NOAPI_NOINIT(H5F_istore_lock); assert(TRUE==H5P_isa_class(dxpl_id,H5P_DATASET_XFER)); /* Get the chunk's size */ assert(layout->chunk_size>0); H5_ASSIGN_OVERFLOW(chunk_size,layout->chunk_size,hsize_t,size_t); /* Search for the chunk in the cache */ if (rdcc->nslots>0) { for (u=0, temp_idx=0; undims; u++) { temp_idx += offset[u]; temp_idx *= layout->dim[u]; } temp_idx += (hsize_t)(layout->addr); idx=H5F_HASH(f,temp_idx); ent = rdcc->slot[idx]; if (ent && layout->ndims==ent->layout->ndims && H5F_addr_eq(layout->addr, ent->layout->addr)) { for (u=0, found=TRUE; ulayout->ndims; u++) { if (offset[u]!=ent->offset[u]) { found = FALSE; break; } } } } if (found) { /* * Already in the cache. Count a hit. */ rdcc->nhits++; } else if (!found && relax) { /* * Not in the cache, but we're about to overwrite the whole thing * anyway, so just allocate a buffer for it but don't initialize that * buffer with the file contents. Count this as a hit instead of a * miss because we saved ourselves lots of work. */ #ifdef H5F_ISTORE_DEBUG HDputc('w', stderr); HDfflush(stderr); #endif rdcc->nhits++; if (NULL==(chunk=H5F_istore_chunk_alloc (chunk_size,pline))) HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for raw data chunk"); } else { H5F_istore_ud1_t udata; /*B-tree pass-through */ haddr_t chunk_addr; /* Address of chunk on disk */ /* * Not in the cache. Read it from the file and count this as a miss * if it's in the file or an init if it isn't. */ chunk_addr = H5F_istore_get_addr(f, dxpl_id, layout, offset, &udata); if (H5F_addr_defined(chunk_addr)) { size_t chunk_alloc=0; /*allocated chunk size */ /* * The chunk exists on disk. */ /* Chunk size on disk isn't [likely] the same size as the final chunk * size in memory, so allocate memory big enough. */ chunk_alloc = udata.key.nbytes; if (NULL==(chunk = H5F_istore_chunk_alloc (chunk_alloc,pline))) HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for raw data chunk"); if (H5F_block_read(f, H5FD_MEM_DRAW, chunk_addr, udata.key.nbytes, dxpl_id, chunk)<0) HGOTO_ERROR (H5E_IO, H5E_READERROR, NULL, "unable to read raw data chunk"); if (H5Z_pipeline(pline, H5Z_FLAG_REVERSE, &(udata.key.filter_mask), dxpl_cache->err_detect, dxpl_cache->filter_cb, &(udata.key.nbytes), &chunk_alloc, &chunk)<0) { HGOTO_ERROR(H5E_PLINE, H5E_READERROR, NULL, "data pipeline read failed"); } rdcc->nmisses++; } else { H5D_fill_value_t fill_status; /* Clear the error stack from not finding the chunk on disk */ H5E_clear(NULL); /* Chunk size on disk isn't [likely] the same size as the final chunk * size in memory, so allocate memory big enough. */ if (NULL==(chunk = H5F_istore_chunk_alloc (chunk_size,pline))) HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for raw data chunk"); if (H5P_is_fill_value_defined(fill, &fill_status) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't tell if fill value defined"); if(fill_time==H5D_FILL_TIME_ALLOC || (fill_time==H5D_FILL_TIME_IFSET && fill_status==H5D_FILL_VALUE_USER_DEFINED)) { if (fill && fill->buf) { /* * The chunk doesn't exist in the file. Replicate the fill * value throughout the chunk. */ assert(0==chunk_size % fill->size); H5V_array_fill(chunk, fill->buf, fill->size, chunk_size/fill->size); } else { /* * The chunk doesn't exist in the file and no fill value was * specified. Assume all zeros. */ HDmemset (chunk, 0, chunk_size); } /* end else */ } /* end if */ rdcc->ninits++; } /* end else */ } assert (found || chunk_size>0); if (!found && rdcc->nslots>0 && chunk_size<=f->shared->rdcc_nbytes && (!ent || !ent->locked)) { /* * Add the chunk to the cache only if the slot is not already locked. * Preempt enough things from the cache to make room. */ if (ent) { #ifdef H5F_ISTORE_DEBUG HDputc('#', stderr); HDfflush(stderr); #endif if (H5F_istore_preempt(f, dxpl_cache, dxpl_id, ent, TRUE)<0) HGOTO_ERROR(H5E_IO, H5E_CANTINIT, NULL, "unable to preempt chunk from cache"); } if (H5F_istore_prune(f, dxpl_cache, dxpl_id, chunk_size)<0) HGOTO_ERROR(H5E_IO, H5E_CANTINIT, NULL, "unable to preempt chunk(s) from cache"); /* Create a new entry */ ent = H5FL_MALLOC(H5F_rdcc_ent_t); ent->locked = 0; ent->dirty = FALSE; ent->chunk_size = chunk_size; ent->alloc_size = chunk_size; ent->layout = H5O_copy(H5O_LAYOUT_ID, layout, NULL); ent->pline = H5O_copy(H5O_PLINE_ID, pline, NULL); for (u=0; undims; u++) ent->offset[u] = offset[u]; ent->rd_count = chunk_size; ent->wr_count = chunk_size; ent->chunk = chunk; HDmemcpy(&(ent->split_ratios),&dxpl_cache->btree_split_ratio,H5D_XFER_BTREE_SPLIT_RATIO_SIZE); /* Add it to the cache */ assert(NULL==rdcc->slot[idx]); rdcc->slot[idx] = ent; ent->idx = idx; rdcc->nbytes += chunk_size; rdcc->nused++; /* Add it to the linked list */ ent->next = NULL; if (rdcc->tail) { rdcc->tail->next = ent; ent->prev = rdcc->tail; rdcc->tail = ent; } else { rdcc->head = rdcc->tail = ent; ent->prev = NULL; } found = TRUE; } else if (!found) { /* * The chunk is larger than the entire cache so we don't cache it. * This is the reason all those arguments have to be repeated for the * unlock function. */ ent = NULL; idx = UINT_MAX; } else if (found) { /* * The chunk is not at the beginning of the cache; move it backward * by one slot. This is how we implement the LRU preemption * algorithm. */ if (ent->next) { if (ent->next->next) ent->next->next->prev = ent; else rdcc->tail = ent; ent->next->prev = ent->prev; if (ent->prev) ent->prev->next = ent->next; else rdcc->head = ent->next; ent->prev = ent->next; ent->next = ent->next->next; ent->prev->next = ent; } } /* Lock the chunk into the cache */ if (ent) { assert (!ent->locked); ent->locked = TRUE; chunk = ent->chunk; } if (idx_hint) *idx_hint = idx; /* Set return value */ ret_value = chunk; done: if (!ret_value) if(chunk) H5F_istore_chunk_xfree (chunk,pline); FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_unlock * * Purpose: Unlocks a previously locked chunk. The LAYOUT, COMP, and * OFFSET arguments should be the same as for H5F_rdcc_lock(). * The DIRTY argument should be set to non-zero if the chunk has * been modified since it was locked. The IDX_HINT argument is * the returned index hint from the lock operation and BUF is * the return value from the lock. * * The NACCESSED argument should be the number of bytes accessed * for reading or writing (depending on the value of DIRTY). * It's only purpose is to provide additional information to the * preemption policy. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Thursday, May 21, 1998 * * Modifications: * Robb Matzke, 1999-08-02 * The split_ratios are passed as part of the data transfer * property list. *------------------------------------------------------------------------- */ static herr_t H5F_istore_unlock(H5F_t *f, const H5D_dxpl_cache_t *dxpl_cache, hid_t dxpl_id, const H5O_layout_t *layout, const H5O_pline_t *pline, hbool_t dirty, const hssize_t offset[], unsigned *idx_hint, uint8_t *chunk, size_t naccessed) { H5F_rdcc_t *rdcc = &(f->shared->rdcc); H5F_rdcc_ent_t *ent = NULL; int found = -1; unsigned u; FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5F_istore_unlock); if (UINT_MAX==*idx_hint) { /*not in cache*/ } else { assert(*idx_hintnslots); assert(rdcc->slot[*idx_hint]); assert(rdcc->slot[*idx_hint]->chunk==chunk); found = *idx_hint; } if (found<0) { /* * It's not in the cache, probably because it's too big. If it's * dirty then flush it to disk. In any case, free the chunk. * Note: we have to copy the layout and filter messages so we * don't discard the `const' qualifier. */ if (dirty) { H5F_rdcc_ent_t x; HDmemset (&x, 0, sizeof x); x.dirty = TRUE; x.layout = H5O_copy (H5O_LAYOUT_ID, layout, NULL); x.pline = H5O_copy (H5O_PLINE_ID, pline, NULL); for (u=0; undims; u++) x.offset[u] = offset[u]; assert(layout->chunk_size>0); H5_ASSIGN_OVERFLOW(x.chunk_size,layout->chunk_size,hsize_t,size_t); x.alloc_size = x.chunk_size; x.chunk = chunk; HDmemcpy(&(x.split_ratios),&dxpl_cache->btree_split_ratio,H5D_XFER_BTREE_SPLIT_RATIO_SIZE); H5F_istore_flush_entry (f, dxpl_cache, dxpl_id, &x, TRUE); } else { if(chunk) H5F_istore_chunk_xfree (chunk,pline); } } else { /* * It's in the cache so unlock it. */ ent = rdcc->slot[found]; assert (ent->locked); if (dirty) { ent->dirty = TRUE; ent->wr_count -= MIN (ent->wr_count, naccessed); } else { ent->rd_count -= MIN (ent->rd_count, naccessed); } ent->locked = FALSE; } FUNC_LEAVE_NOAPI(SUCCEED); } /*------------------------------------------------------------------------- * Function: H5F_istore_readvv * * Purpose: Reads a multi-dimensional buffer from (part of) an indexed raw * storage array. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Wednesday, May 7, 2003 * * Modifications: * *------------------------------------------------------------------------- */ ssize_t H5F_istore_readvv(H5F_t *f, const struct H5D_dxpl_cache_t *dxpl_cache, hid_t dxpl_id, const H5O_layout_t *layout, const struct H5D_dcpl_cache_t *dcpl_cache, hssize_t chunk_coords[], size_t chunk_max_nseq, size_t *chunk_curr_seq, size_t chunk_len_arr[], hsize_t chunk_offset_arr[], size_t mem_max_nseq, size_t *mem_curr_seq, size_t mem_len_arr[], hsize_t mem_offset_arr[], void *buf) { haddr_t chunk_addr; /* Chunk address on disk */ size_t u; /* Local index variables */ ssize_t ret_value; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_readvv, FAIL); /* Check args */ assert(f); assert(dxpl_cache); assert(layout && H5D_CHUNKED==layout->type); assert(layout->ndims>0 && layout->ndims<=H5O_LAYOUT_NDIMS); assert(dcpl_cache); assert(chunk_len_arr); assert(chunk_offset_arr); assert(mem_len_arr); assert(mem_offset_arr); assert(buf); #ifndef NDEBUG for (u=0; undims; u++) assert(chunk_coords[u]>=0); /*negative coordinates not supported (yet) */ #endif /* Get the address of this chunk on disk */ #ifdef QAK HDfprintf(stderr,"%s: chunk_coords={",FUNC); for(u=0; undims; u++) HDfprintf(stderr,"%Hd%s",chunk_coords[u],(u<(layout->ndims-1) ? ", " : "}\n")); #endif /* QAK */ chunk_addr=H5F_istore_get_addr(f, dxpl_id, layout, chunk_coords, NULL); #ifdef QAK HDfprintf(stderr,"%s: chunk_addr=%a, chunk_size=%Hu\n",FUNC,chunk_addr,layout->chunk_size); HDfprintf(stderr,"%s: chunk_len_arr[%Zu]=%Zu\n",FUNC,*chunk_curr_seq,chunk_len_arr[*chunk_curr_seq]); HDfprintf(stderr,"%s: chunk_offset_arr[%Zu]=%Hu\n",FUNC,*chunk_curr_seq,chunk_offset_arr[*chunk_curr_seq]); HDfprintf(stderr,"%s: mem_len_arr[%Zu]=%Zu\n",FUNC,*mem_curr_seq,mem_len_arr[*mem_curr_seq]); HDfprintf(stderr,"%s: mem_offset_arr[%Zu]=%Hu\n",FUNC,*mem_curr_seq,mem_offset_arr[*mem_curr_seq]); #endif /* QAK */ /* * If the chunk is too large to load into the cache and it has no * filters in the pipeline (i.e. not compressed) and if the address * for the chunk has been defined, then don't load the chunk into the * cache, just write the data to it directly. */ if (layout->chunk_size>f->shared->rdcc_nbytes && dcpl_cache->pline.nused==0 && chunk_addr!=HADDR_UNDEF) { if ((ret_value=H5F_contig_readvv(f, layout->chunk_size, chunk_addr, chunk_max_nseq, chunk_curr_seq, chunk_len_arr, chunk_offset_arr, mem_max_nseq, mem_curr_seq, mem_len_arr, mem_offset_arr, dxpl_id, buf))<0) HGOTO_ERROR (H5E_IO, H5E_READERROR, FAIL, "unable to read raw data to file"); } /* end if */ else { uint8_t *chunk; /* Pointer to cached chunk in memory */ unsigned idx_hint=0; /* Cache index hint */ ssize_t naccessed; /* Number of bytes accessed in chunk */ /* * Lock the chunk, copy from application to chunk, then unlock the * chunk. */ if (NULL==(chunk=H5F_istore_lock(f, dxpl_cache, dxpl_id, layout, &dcpl_cache->pline, &dcpl_cache->fill, dcpl_cache->fill_time, chunk_coords, FALSE, &idx_hint))) HGOTO_ERROR(H5E_IO, H5E_READERROR, FAIL, "unable to read raw data chunk"); /* Use the vectorized memory copy routine to do actual work */ if((naccessed=H5V_memcpyvv(buf,mem_max_nseq,mem_curr_seq,mem_len_arr,mem_offset_arr,chunk,chunk_max_nseq,chunk_curr_seq,chunk_len_arr,chunk_offset_arr))<0) HGOTO_ERROR(H5E_IO, H5E_READERROR, FAIL, "vectorized memcpy failed"); H5_CHECK_OVERFLOW(naccessed,ssize_t,size_t); if (H5F_istore_unlock(f, dxpl_cache, dxpl_id, layout, &dcpl_cache->pline, FALSE, chunk_coords, &idx_hint, chunk, (size_t)naccessed)<0) HGOTO_ERROR(H5E_IO, H5E_READERROR, FAIL, "unable to unlock raw data chunk"); /* Set return value */ ret_value=naccessed; } /* end else */ done: FUNC_LEAVE_NOAPI(ret_value); } /* H5F_istore_readvv() */ /*------------------------------------------------------------------------- * Function: H5F_istore_writevv * * Purpose: Writes a multi-dimensional buffer to (part of) an indexed raw * storage array. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Friday, May 2, 2003 * * Modifications: * *------------------------------------------------------------------------- */ ssize_t H5F_istore_writevv(H5F_t *f, const struct H5D_dxpl_cache_t *dxpl_cache, hid_t dxpl_id, const H5O_layout_t *layout, const struct H5D_dcpl_cache_t *dcpl_cache, hssize_t chunk_coords[], size_t chunk_max_nseq, size_t *chunk_curr_seq, size_t chunk_len_arr[], hsize_t chunk_offset_arr[], size_t mem_max_nseq, size_t *mem_curr_seq, size_t mem_len_arr[], hsize_t mem_offset_arr[], const void *buf) { haddr_t chunk_addr; /* Chunk address on disk */ size_t u; /* Local index variables */ ssize_t ret_value; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_writevv, FAIL); /* Check args */ assert(f); assert(dxpl_cache); assert(layout && H5D_CHUNKED==layout->type); assert(layout->ndims>0 && layout->ndims<=H5O_LAYOUT_NDIMS); assert(dcpl_cache); assert(chunk_len_arr); assert(chunk_offset_arr); assert(mem_len_arr); assert(mem_offset_arr); assert(buf); #ifndef NDEBUG for (u=0; undims; u++) assert(chunk_coords[u]>=0); /*negative coordinates not supported (yet) */ #endif /* Get the address of this chunk on disk */ #ifdef QAK HDfprintf(stderr,"%s: chunk_coords={",FUNC); for(u=0; undims; u++) HDfprintf(stderr,"%Hd%s",chunk_coords[u],(u<(layout->ndims-1) ? ", " : "}\n")); #endif /* QAK */ chunk_addr=H5F_istore_get_addr(f, dxpl_id, layout, chunk_coords, NULL); #ifdef QAK HDfprintf(stderr,"%s: chunk_addr=%a, chunk_size=%Hu\n",FUNC,chunk_addr,layout->chunk_size); HDfprintf(stderr,"%s: chunk_len_arr[%Zu]=%Zu\n",FUNC,*chunk_curr_seq,chunk_len_arr[*chunk_curr_seq]); HDfprintf(stderr,"%s: chunk_offset_arr[%Zu]=%Hu\n",FUNC,*chunk_curr_seq,chunk_offset_arr[*chunk_curr_seq]); HDfprintf(stderr,"%s: mem_len_arr[%Zu]=%Zu\n",FUNC,*mem_curr_seq,mem_len_arr[*mem_curr_seq]); HDfprintf(stderr,"%s: mem_offset_arr[%Zu]=%Hu\n",FUNC,*mem_curr_seq,mem_offset_arr[*mem_curr_seq]); #endif /* QAK */ /* * If the chunk is too large to load into the cache and it has no * filters in the pipeline (i.e. not compressed) and if the address * for the chunk has been defined, then don't load the chunk into the * cache, just write the data to it directly. * * If MPI based VFD is used, must bypass the * chunk-cache scheme because other MPI processes could be * writing to other elements in the same chunk. Do a direct * write-through of only the elements requested. */ if ((layout->chunk_size>f->shared->rdcc_nbytes && dcpl_cache->pline.nused==0 && chunk_addr!=HADDR_UNDEF) || (IS_H5FD_MPI(f) && (H5F_ACC_RDWR & f->shared->flags))) { #ifdef H5_HAVE_PARALLEL /* Additional sanity check when operating in parallel */ if (chunk_addr==HADDR_UNDEF || dcpl_cache->pline.nused>0) HGOTO_ERROR (H5E_IO, H5E_WRITEERROR, FAIL, "unable to locate raw data chunk"); #endif /* H5_HAVE_PARALLEL */ if ((ret_value=H5F_contig_writevv(f, layout->chunk_size, chunk_addr, chunk_max_nseq, chunk_curr_seq, chunk_len_arr, chunk_offset_arr, mem_max_nseq, mem_curr_seq, mem_len_arr, mem_offset_arr, dxpl_id, buf))<0) HGOTO_ERROR (H5E_IO, H5E_WRITEERROR, FAIL, "unable to write raw data to file"); } /* end if */ else { uint8_t *chunk; /* Pointer to cached chunk in memory */ unsigned idx_hint=0; /* Cache index hint */ ssize_t naccessed; /* Number of bytes accessed in chunk */ hbool_t relax; /* Whether whole chunk is selected */ /* * Lock the chunk, copy from application to chunk, then unlock the * chunk. */ if(chunk_max_nseq==1 && chunk_len_arr[0] == layout->chunk_size) relax = TRUE; else relax = FALSE; if (NULL==(chunk=H5F_istore_lock(f, dxpl_cache, dxpl_id, layout, &dcpl_cache->pline, &dcpl_cache->fill, dcpl_cache->fill_time, chunk_coords, relax, &idx_hint))) HGOTO_ERROR (H5E_IO, H5E_WRITEERROR, FAIL, "unable to read raw data chunk"); /* Use the vectorized memory copy routine to do actual work */ if((naccessed=H5V_memcpyvv(chunk,chunk_max_nseq,chunk_curr_seq,chunk_len_arr,chunk_offset_arr,buf,mem_max_nseq,mem_curr_seq,mem_len_arr,mem_offset_arr))<0) HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "vectorized memcpy failed"); H5_CHECK_OVERFLOW(naccessed,ssize_t,size_t); if (H5F_istore_unlock(f, dxpl_cache, dxpl_id, layout, &dcpl_cache->pline, TRUE, chunk_coords, &idx_hint, chunk, (size_t)naccessed)<0) HGOTO_ERROR (H5E_IO, H5E_WRITEERROR, FAIL, "uanble to unlock raw data chunk"); /* Set return value */ ret_value=naccessed; } /* end else */ done: FUNC_LEAVE_NOAPI(ret_value); } /* H5F_istore_writevv() */ /*------------------------------------------------------------------------- * Function: H5F_istore_create * * Purpose: Creates a new indexed-storage B-tree and initializes the * istore struct with information about the storage. The * struct should be immediately written to the object header. * * This function must be called before passing ISTORE to any of * the other indexed storage functions! * * Return: Non-negative on success (with the ISTORE argument initialized * and ready to write to an object header). Negative on failure. * * Programmer: Robb Matzke * Tuesday, October 21, 1997 * * Modifications: * *------------------------------------------------------------------------- */ herr_t H5F_istore_create(H5F_t *f, hid_t dxpl_id, H5O_layout_t *layout /*out */ ) { H5F_istore_ud1_t udata; #ifndef NDEBUG unsigned u; #endif herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_create, FAIL); /* Check args */ assert(f); assert(layout && H5D_CHUNKED == layout->type); assert(layout->ndims > 0 && layout->ndims <= H5O_LAYOUT_NDIMS); #ifndef NDEBUG for (u = 0; u < layout->ndims; u++) assert(layout->dim[u] > 0); #endif udata.mesg.ndims = layout->ndims; if (H5B_create(f, dxpl_id, H5B_ISTORE, &udata, &(layout->addr)/*out*/) < 0) HGOTO_ERROR(H5E_IO, H5E_CANTINIT, FAIL, "can't create B-tree"); done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_allocated * * Purpose: Return the number of bytes allocated in the file for storage * of raw data under the specified B-tree (ADDR is the address * of the B-tree). * * Return: Success: Number of bytes stored in all chunks. * * Failure: 0 * * Programmer: Robb Matzke * Wednesday, April 21, 1999 * * Modifications: * Robb Matzke, 1999-07-28 * The ADDR argument is passed by value. *------------------------------------------------------------------------- */ hsize_t H5F_istore_allocated(H5F_t *f, hid_t dxpl_id, unsigned ndims, haddr_t addr) { H5F_istore_ud1_t udata; hsize_t ret_value; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_allocated, 0); HDmemset(&udata, 0, sizeof udata); udata.mesg.ndims = ndims; if (H5B_iterate(f, dxpl_id, H5B_ISTORE, H5F_istore_iter_allocated, addr, &udata)<0) HGOTO_ERROR(H5E_IO, H5E_CANTINIT, 0, "unable to iterate over chunk B-tree"); /* Set return value */ ret_value=udata.total_storage; done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_get_addr * * Purpose: Get the file address of a chunk if file space has been * assigned. Save the retrieved information in the udata * supplied. * * Return: Non-negative on success/Negative on failure * * Programmer: Albert Cheng * June 27, 1998 * * Modifications: * Modified to return the address instead of returning it through * a parameter - QAK, 1/30/02 * *------------------------------------------------------------------------- */ static haddr_t H5F_istore_get_addr(H5F_t *f, hid_t dxpl_id, const H5O_layout_t *layout, const hssize_t offset[], H5F_istore_ud1_t *_udata) { H5F_istore_ud1_t tmp_udata; /* Information about a chunk */ H5F_istore_ud1_t *udata; /* Pointer to information about a chunk */ unsigned u; haddr_t ret_value; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5F_istore_get_addr); assert(f); assert(layout && (layout->ndims > 0)); assert(offset); /* Check for udata struct to return */ udata = (_udata!=NULL ? _udata : &tmp_udata); /* Initialize the information about the chunk we are looking for */ for (u=0; undims; u++) udata->key.offset[u] = offset[u]; udata->mesg = *layout; udata->addr = HADDR_UNDEF; /* Go get the chunk information */ if (H5B_find (f, dxpl_id, H5B_ISTORE, layout->addr, udata)<0) { H5E_clear(NULL); HGOTO_ERROR(H5E_BTREE,H5E_NOTFOUND,HADDR_UNDEF,"Can't locate chunk info"); } /* end if */ /* Success! Set the return value */ ret_value=udata->addr; done: FUNC_LEAVE_NOAPI(ret_value); } /* H5F_istore_get_addr() */ /*------------------------------------------------------------------------- * Function: H5F_istore_chunk_alloc * * Purpose: Allocate space for a chunk in memory. This routine allocates * memory space for non-filtered chunks from a block free list * and uses malloc()/free() for filtered chunks. * * Return: Pointer to memory for chunk on success/NULL on failure * * Programmer: Quincey Koziol * April 22, 2004 * * Modifications: * *------------------------------------------------------------------------- */ static void * H5F_istore_chunk_alloc(size_t size, const H5O_pline_t *pline) { void *ret_value=NULL; /* Return value */ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5F_istore_chunk_alloc); assert(size); assert(pline); if(pline->nused>0) ret_value=H5MM_malloc(size); else ret_value=H5FL_BLK_MALLOC(chunk,size); FUNC_LEAVE_NOAPI(ret_value); } /* H5F_istore_chunk_alloc() */ /*------------------------------------------------------------------------- * Function: H5F_istore_chunk_xfree * * Purpose: Free space for a chunk in memory. This routine allocates * memory space for non-filtered chunks from a block free list * and uses malloc()/free() for filtered chunks. * * Return: NULL (never fails) * * Programmer: Quincey Koziol * April 22, 2004 * * Modifications: * *------------------------------------------------------------------------- */ static void * H5F_istore_chunk_xfree(void *chk, const H5O_pline_t *pline) { FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5F_istore_chunk_xfree); assert(pline); if(chk) { if(pline->nused>0) H5MM_xfree(chk); else H5FL_BLK_FREE(chunk,chk); } /* end if */ FUNC_LEAVE_NOAPI(NULL); } /* H5F_istore_chunk_xfree() */ /*------------------------------------------------------------------------- * Function: H5F_istore_allocate * * Purpose: Allocate file space for all chunks that are not allocated yet. * Return SUCCEED if all needed allocation succeed, otherwise * FAIL. * * Return: Non-negative on success/Negative on failure * * Note: Current implementation relies on cache_size being 0, * thus no chunk is cashed and written to disk immediately * when a chunk is unlocked (via H5F_istore_unlock) * This should be changed to do a direct flush independent * of the cache value. * * Programmer: Albert Cheng * June 26, 1998 * * Modifications: * rky, 1998-09-23 * Added barrier to preclude racing with data writes. * * rky, 1998-12-07 * Added Wait-Signal wrapper around unlock-lock critical region * to prevent race condition (unlock reads, lock writes the * chunk). * * Robb Matzke, 1999-08-02 * The split_ratios are passed in as part of the data transfer * property list. * * Quincey Koziol, 2002-05-16 * Rewrote algorithm to allocate & write blocks without using * lock/unlock code. * * Quincey Koziol, 2002-05-17 * Added feature to avoid writing fill-values if user has indicated * that they should never be written. *------------------------------------------------------------------------- */ herr_t H5F_istore_allocate(H5F_t *f, hid_t dxpl_id, const H5O_layout_t *layout, const hsize_t *space_dim, H5P_genplist_t *dc_plist, hbool_t full_overwrite) { hssize_t chunk_offset[H5O_LAYOUT_NDIMS]; /* Offset of current chunk */ hsize_t chunk_size; /* Size of chunk in bytes */ H5O_pline_t pline; /* I/O pipeline information */ H5O_fill_t fill; /* Fill value information */ H5D_fill_time_t fill_time; /* When to write fill values */ H5D_fill_value_t fill_status; /* The fill value status */ unsigned should_fill=0; /* Whether fill values should be written */ H5F_istore_ud1_t udata; /* B-tree pass-through for creating chunk */ void *chunk=NULL; /* Chunk buffer for writing fill values */ H5P_genplist_t *dx_plist; /* Data xfer property list */ double split_ratios[3];/* B-tree node splitting ratios */ #ifdef H5_HAVE_PARALLEL MPI_Comm mpi_comm=MPI_COMM_NULL; /* MPI communicator for file */ int mpi_rank=(-1); /* This process's rank */ int mpi_code; /* MPI return code */ unsigned blocks_written=0; /* Flag to indicate that chunk was actually written */ unsigned using_mpi=0; /* Flag to indicate that the file is being accessed with an MPI-capable file driver */ #endif /* H5_HAVE_PARALLEL */ int carry; /* Flag to indicate that chunk increment carrys to higher dimension (sorta) */ unsigned chunk_exists; /* Flag to indicate whether a chunk exists already */ int i; /* Local index variable */ unsigned u; /* Local index variable */ H5Z_EDC_t edc; /* Decide whether to enable EDC for read */ H5Z_cb_t cb_struct; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_allocate, FAIL); /* Check args */ assert(f); assert(space_dim); assert(layout && H5D_CHUNKED==layout->type); assert(layout->ndims>0 && layout->ndims<=H5O_LAYOUT_NDIMS); assert(H5F_addr_defined(layout->addr)); assert(TRUE==H5P_isa_class(dxpl_id,H5P_DATASET_XFER)); assert(dc_plist); /* Get necessary properties from dataset creation property list */ if(H5P_get(dc_plist, H5D_CRT_FILL_VALUE_NAME, &fill) < 0) HGOTO_ERROR(H5E_STORAGE, H5E_CANTGET, FAIL, "can't get fill value"); if(H5P_get(dc_plist, H5D_CRT_DATA_PIPELINE_NAME, &pline) < 0) HGOTO_ERROR(H5E_STORAGE, H5E_CANTGET, FAIL, "can't get data pipeline"); if(H5P_get(dc_plist, H5D_CRT_FILL_TIME_NAME, &fill_time) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't retrieve fill time"); /* Get necessary properties from dataset transfer property list */ if (NULL == (dx_plist = H5P_object_verify(dxpl_id,H5P_DATASET_XFER))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset transfer property list"); if(H5P_get(dx_plist,H5D_XFER_BTREE_SPLIT_RATIO_NAME,split_ratios)<0) HGOTO_ERROR(H5E_STORAGE, H5E_CANTGET, FAIL, "can't get B-tree split ratios"); if(H5P_get(dx_plist,H5D_XFER_EDC_NAME,&edc)<0) HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get edc information"); if(H5P_get(dx_plist,H5D_XFER_FILTER_CB_NAME,&cb_struct)<0) HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get filter callback struct"); #ifdef H5_HAVE_PARALLEL /* Retrieve MPI parameters */ if(IS_H5FD_MPI(f)) { /* Get the MPI communicator */ if (MPI_COMM_NULL == (mpi_comm=H5FD_mpi_get_comm(f->shared->lf))) HGOTO_ERROR(H5E_INTERNAL, H5E_MPI, FAIL, "Can't retrieve MPI communicator"); /* Get the MPI rank & size */ if ((mpi_rank=H5FD_mpi_get_rank(f->shared->lf))<0) HGOTO_ERROR(H5E_INTERNAL, H5E_MPI, FAIL, "Can't retrieve MPI rank"); /* Set the MPI-capable file driver flag */ using_mpi=1; } /* end if */ #endif /* H5_HAVE_PARALLEL */ /* * Setup indice to go through all chunks. (Future improvement * should allocate only chunks that have no file space assigned yet. */ for (u=0; undims; u++) chunk_offset[u] = 0; chunk_size = layout->chunk_size; /* Check the dataset's fill-value status */ if (H5P_is_fill_value_defined(&fill, &fill_status) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't tell if fill value defined"); /* If we are filling the dataset on allocation or "if set" and * the fill value _is_ set, _and_ we are not overwriting the new blocks, * set the "should fill" flag */ if(!full_overwrite && (fill_time==H5D_FILL_TIME_ALLOC || (fill_time==H5D_FILL_TIME_IFSET && fill_status==H5D_FILL_VALUE_USER_DEFINED))) should_fill=1; /* Check if fill values should be written to blocks */ if(should_fill) { /* Allocate chunk buffer for processes to use when writing fill values */ H5_CHECK_OVERFLOW(chunk_size,hsize_t,size_t); if (NULL==(chunk = H5F_istore_chunk_alloc((size_t)chunk_size,&pline))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed for chunk"); /* Fill the chunk with the proper values */ if(fill.buf) { /* * Replicate the fill value throughout the chunk. */ assert(0==chunk_size % fill.size); H5V_array_fill(chunk, fill.buf, fill.size, (size_t)chunk_size/fill.size); } else { /* * No fill value was specified, assume all zeros. */ HDmemset (chunk, 0, (size_t)chunk_size); } /* end else */ /* Check if there are filters which need to be applied to the chunk */ if (pline.nused>0) { unsigned filter_mask=0; size_t buf_size=(size_t)chunk_size; size_t nbytes=(size_t)chunk_size; /* Push the chunk through the filters */ if (H5Z_pipeline(&pline, 0, &filter_mask, edc, cb_struct, &nbytes, &buf_size, &chunk)<0) HGOTO_ERROR(H5E_PLINE, H5E_WRITEERROR, FAIL, "output pipeline failed"); /* Keep the number of bytes the chunk turned in to */ chunk_size=nbytes; } /* end if */ } /* end if */ /* Loop over all chunks */ carry=0; while (carry==0) { /* Check if the chunk exists yet on disk */ chunk_exists=1; if(H5F_istore_get_addr(f,dxpl_id,layout,chunk_offset, NULL)==HADDR_UNDEF) { H5F_rdcc_t *rdcc = &(f->shared->rdcc); /*raw data chunk cache */ H5F_rdcc_ent_t *ent = NULL; /*cache entry */ /* Didn't find the chunk on disk */ chunk_exists = 0; /* Look for chunk in cache */ for(ent = rdcc->head; ent && !chunk_exists; ent = ent->next) { /* Make certain we are dealing with the correct B-tree, etc */ if (layout->ndims==ent->layout->ndims && H5F_addr_eq(layout->addr, ent->layout->addr)) { /* Assume a match */ chunk_exists = 1; for(u = 0; u < layout->ndims && chunk_exists; u++) { if(ent->offset[u] != chunk_offset[u]) chunk_exists = 0; /* Reset if no match */ } /* end for */ } /* end if */ } /* end for */ } /* end if */ if(!chunk_exists) { /* Initialize the chunk information */ udata.mesg = *layout; udata.key.filter_mask = 0; udata.addr = HADDR_UNDEF; H5_CHECK_OVERFLOW(chunk_size,hsize_t,size_t); udata.key.nbytes = (size_t)chunk_size; for (u=0; undims; u++) udata.key.offset[u] = chunk_offset[u]; /* Allocate the chunk with all processes */ if (H5B_insert(f, dxpl_id, H5B_ISTORE, layout->addr, split_ratios, &udata)<0) HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "unable to allocate chunk"); /* Check if fill values should be written to blocks */ if(should_fill) { #ifdef H5_HAVE_PARALLEL /* Check if this file is accessed with an MPI-capable file driver */ if(using_mpi) { /* Write the chunks out from only one process */ /* !! Use the internal "independent" DXPL!! -QAK */ if(H5_PAR_META_WRITE==mpi_rank) { if (H5F_block_write(f, H5FD_MEM_DRAW, udata.addr, udata.key.nbytes, H5AC_ind_dxpl_id, chunk)<0) HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "unable to write raw data to file"); } /* end if */ /* Indicate that blocks are being written */ blocks_written=1; } /* end if */ else { #endif /* H5_HAVE_PARALLEL */ if (H5F_block_write(f, H5FD_MEM_DRAW, udata.addr, udata.key.nbytes, dxpl_id, chunk)<0) HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "unable to write raw data to file"); #ifdef H5_HAVE_PARALLEL } /* end else */ #endif /* H5_HAVE_PARALLEL */ } /* end if */ } /* end if */ /* Increment indices */ for (i=layout->ndims-1, carry=1; i>=0 && carry; --i) { chunk_offset[i] += layout->dim[i]; if (chunk_offset[i] >= (hssize_t)(space_dim[i])) chunk_offset[i] = 0; else carry = 0; } /* end for */ } /* end while */ #ifdef H5_HAVE_PARALLEL /* Only need to block at the barrier if we actually allocated a chunk */ /* And if we are using an MPI-capable file driver */ if(using_mpi && blocks_written) { /* Wait at barrier to avoid race conditions where some processes are * still writing out chunks and other processes race ahead to read * them in, getting bogus data. */ if (MPI_SUCCESS != (mpi_code=MPI_Barrier(mpi_comm))) HMPI_GOTO_ERROR(FAIL, "MPI_Barrier failed", mpi_code); } /* end if */ #endif /* H5_HAVE_PARALLEL */ done: /* Free the chunk for fill values */ if(chunk!=NULL) H5F_istore_chunk_xfree(chunk,&pline); FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_prune_by_extent * * Purpose: This function searches for chunks that are no longer necessary both in the * raw data cache and in the B-tree. * * Return: Success: 0, Failure: -1 * * Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu * Algorithm: Robb Matzke * * Date: March 27, 2002 * * The algorithm is: * * For chunks that are no longer necessary: * * 1. Search in the raw data cache for each chunk * 2. If found then preempt it from the cache * 3. Search in the B-tree for each chunk * 4. If found then remove it from the B-tree and deallocate file storage for the chunk * * This example shows a 2d dataset of 90x90 with a chunk size of 20x20. * * * 0 20 40 60 80 90 100 * 0 +---------+---------+---------+---------+-----+...+ * |:::::X:::::::::::::: : : | : * |:::::::X:::::::::::: : : | : Key * |::::::::::X::::::::: : : | : -------- * |::::::::::::X::::::: : : | : +-+ Dataset * 20+::::::::::::::::::::.........:.........:.....+...: | | Extent * | :::::X::::: : : | : +-+ * | ::::::::::: : : | : * | ::::::::::: : : | : ... Chunk * | :::::::X::: : : | : : : Boundary * 40+.........:::::::::::.........:.........:.....+...: :.: * | : : : : | : * | : : : : | : ... Allocated * | : : : : | : ::: & Filled * | : : : : | : ::: Chunk * 60+.........:.........:.........:.........:.....+...: * | : :::::::X::: : | : X Element * | : ::::::::::: : | : Written * | : ::::::::::: : | : * | : ::::::::::: : | : * 80+.........:.........:::::::::::.........:.....+...: O Fill Val * | : : ::::::::::: | : Explicitly * | : : ::::::X:::: | : Written * 90+---------+---------+---------+---------+-----+ : * : : : ::::::::::: : * 100:.........:.........:.........:::::::::::.........: * * * We have 25 total chunks for this dataset, 5 of which have space * allocated in the file because they were written to one or more * elements. These five chunks (and only these five) also have entries in * the storage B-tree for this dataset. * * Now lets say we want to shrink the dataset down to 70x70: * * * 0 20 40 60 70 80 90 100 * 0 +---------+---------+---------+----+----+-----+...+ * |:::::X:::::::::::::: : | : | : * |:::::::X:::::::::::: : | : | : Key * |::::::::::X::::::::: : | : | : -------- * |::::::::::::X::::::: : | : | : +-+ Dataset * 20+::::::::::::::::::::.........:....+....:.....|...: | | Extent * | :::::X::::: : | : | : +-+ * | ::::::::::: : | : | : * | ::::::::::: : | : | : ... Chunk * | :::::::X::: : | : | : : : Boundary * 40+.........:::::::::::.........:....+....:.....|...: :.: * | : : : | : | : * | : : : | : | : ... Allocated * | : : : | : | : ::: & Filled * | : : : | : | : ::: Chunk * 60+.........:.........:.........:....+....:.....|...: * | : :::::::X::: | : | : X Element * | : ::::::::::: | : | : Written * +---------+---------+---------+----+ : | : * | : ::::::::::: : | : * 80+.........:.........:::::::::X:.........:.....|...: O Fill Val * | : : ::::::::::: | : Explicitly * | : : ::::::X:::: | : Written * 90+---------+---------+---------+---------+-----+ : * : : : ::::::::::: : * 100:.........:.........:.........:::::::::::.........: * * * That means that the nine chunks along the bottom and right side should * no longer exist. Of those nine chunks, (0,80), (20,80), (40,80), * (60,80), (80,80), (80,60), (80,40), (80,20), and (80,0), one is actually allocated * that needs to be released. * To release the chunks, we traverse the B-tree to obtain a list of unused * allocated chunks, and then call H5B_remove() for each chunk. * *------------------------------------------------------------------------- */ herr_t H5F_istore_prune_by_extent(H5F_t *f, const struct H5D_dxpl_cache_t *dxpl_cache, hid_t dxpl_id, const H5O_layout_t *layout, const H5S_t * space) { H5F_rdcc_t *rdcc = &(f->shared->rdcc); /*raw data chunk cache */ H5F_rdcc_ent_t *ent = NULL, *next = NULL; /*cache entry */ unsigned u; /*counters */ int found = 0; /*remove this entry */ H5F_istore_ud1_t udata; /*B-tree pass-through */ hsize_t curr_dims[H5O_LAYOUT_NDIMS]; /*current dataspace dimensions */ herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_prune_by_extent, FAIL); /* Check args */ assert(f); assert(layout && H5D_CHUNKED == layout->type); assert(layout->ndims > 0 && layout->ndims <= H5O_LAYOUT_NDIMS); assert(H5F_addr_defined(layout->addr)); assert(space); /* Go get the rank & dimensions */ if(H5S_get_simple_extent_dims(space, curr_dims, NULL) < 0) HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get dataset dimensions"); /*------------------------------------------------------------------------- * Figure out what chunks are no longer in use for the specified extent * and release them from the linked list raw data cache *------------------------------------------------------------------------- */ for(ent = rdcc->head; ent; ent = next) { next = ent->next; /* Make certain we are dealing with the correct B-tree, etc */ if (layout->ndims==ent->layout->ndims && H5F_addr_eq(layout->addr, ent->layout->addr)) { found = 0; for(u = 0; u < ent->layout->ndims - 1; u++) { if((hsize_t)ent->offset[u] > curr_dims[u]) { found = 1; break; } } } /* end if */ if(found) { #if defined (H5F_ISTORE_DEBUG) HDfputs("cache:remove:[", stdout); for(u = 0; u < ent->layout->ndims - 1; u++) { HDfprintf(stdout, "%s%Hd", u ? ", " : "", ent->offset[u]); } HDfputs("]\n", stdout); #endif /* Preempt the entry from the cache, but do not flush it to disk */ if(H5F_istore_preempt(f, dxpl_cache, dxpl_id, ent, FALSE) < 0) HGOTO_ERROR(H5E_IO, H5E_CANTINIT, 0, "unable to preempt chunk"); } } /*------------------------------------------------------------------------- * Check if there are any chunks on the B-tree *------------------------------------------------------------------------- */ HDmemset(&udata, 0, sizeof udata); udata.stream = stdout; udata.mesg.addr = layout->addr; udata.mesg.ndims = layout->ndims; for(u = 0; u < udata.mesg.ndims; u++) udata.mesg.dim[u] = layout->dim[u]; udata.dims = curr_dims; if(H5B_iterate(f, dxpl_id, H5B_ISTORE, H5F_istore_prune_extent, layout->addr, &udata) < 0) HGOTO_ERROR(H5E_IO, H5E_CANTINIT, 0, "unable to iterate over B-tree"); done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_prune_extent * * Purpose: Search for chunks that are no longer necessary in the B-tree. * * Return: Success: 0, Failure: -1 * * Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu * * Date: March 26, 2002 * * Comments: Called by H5B_prune_by_extent, part of H5B_ISTORE * * Modifications: * *------------------------------------------------------------------------- */ static int H5F_istore_prune_extent(H5F_t *f, hid_t dxpl_id, void *_lt_key, haddr_t UNUSED addr, void UNUSED *_rt_key, void *_udata) { H5F_istore_ud1_t *bt_udata = (H5F_istore_ud1_t *)_udata; H5F_istore_key_t *lt_key = (H5F_istore_key_t *)_lt_key; unsigned u; H5F_istore_ud1_t udata; int ret_value=H5B_ITER_CONT; /* Return value */ /* The LT_KEY is the left key (the one that describes the chunk). It points to a chunk of * storage that contains the beginning of the logical address space represented by UDATA. */ FUNC_ENTER_NOAPI_NOINIT(H5F_istore_prune_extent); /* Figure out what chunks are no longer in use for the specified extent and release them */ for(u = 0; u < bt_udata->mesg.ndims - 1; u++) if((hsize_t)lt_key->offset[u] > bt_udata->dims[u]) { #if defined (H5F_ISTORE_DEBUG) HDfputs("b-tree:remove:[", bt_udata->stream); for(u = 0; u < bt_udata->mesg.ndims - 1; u++) { HDfprintf(bt_udata->stream, "%s%Hd", u ? ", " : "", lt_key->offset[u]); } HDfputs("]\n", bt_udata->stream); #endif HDmemset(&udata, 0, sizeof udata); udata.key = *lt_key; udata.mesg = bt_udata->mesg; /* Remove */ if(H5B_remove(f, dxpl_id, H5B_ISTORE, bt_udata->mesg.addr, &udata) < 0) HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, H5B_ITER_ERROR, "unable to remove entry"); break; } /* end if */ done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_remove * * Purpose: Removes chunks that are no longer necessary in the B-tree. * * Return: Success: 0, Failure: -1 * * Programmer: Robb Matzke * Pedro Vicente, pvn@ncsa.uiuc.edu * * Date: March 28, 2002 * * Comments: Part of H5B_ISTORE * * Modifications: * *------------------------------------------------------------------------- */ static H5B_ins_t H5F_istore_remove(H5F_t *f, hid_t dxpl_id, haddr_t addr, void *_lt_key /*in,out */ , hbool_t *lt_key_changed /*out */ , void UNUSED * _udata /*in,out */ , void UNUSED * _rt_key /*in,out */ , hbool_t *rt_key_changed /*out */ ) { H5F_istore_key_t *lt_key = (H5F_istore_key_t *)_lt_key; H5B_ins_t ret_value=H5B_INS_REMOVE; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_remove,H5B_INS_ERROR); /* Check for overlap with the sieve buffer and reset it */ if (H5F_sieve_overlap_clear(f, dxpl_id, addr, (hsize_t)lt_key->nbytes)<0) HGOTO_ERROR(H5E_OHDR, H5E_CANTFREE, H5B_INS_ERROR, "unable to clear sieve buffer"); /* Remove raw data chunk from file */ H5MF_xfree(f, H5FD_MEM_DRAW, dxpl_id, addr, (hsize_t)lt_key->nbytes); /* Mark keys as unchanged */ *lt_key_changed = FALSE; *rt_key_changed = FALSE; done: FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_initialize_by_extent * * Purpose: This function searches for chunks that have to be initialized with the fill * value both in the raw data cache and in the B-tree. * * Return: Success: 0, Failure: -1 * * Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu * * Date: April 4, 2002 * * Comments: * * (See the example of H5F_istore_prune_by_extent) * Next, there are seven chunks where the database extent boundary is * within the chunk. We find those seven just like we did with the previous nine. * Fot the ones that are allocated we initialize the part that lies outside the boundary * with the fill value. * * Modifications: * *------------------------------------------------------------------------- */ herr_t H5F_istore_initialize_by_extent(H5F_t *f, const struct H5D_dxpl_cache_t *dxpl_cache, hid_t dxpl_id, const H5O_layout_t *layout, H5P_genplist_t *dc_plist, const H5S_t * space) { uint8_t *chunk = NULL; /*the file chunk */ unsigned idx_hint = 0; /*input value for H5F_istore_lock */ hssize_t chunk_offset[H5O_LAYOUT_NDIMS]; /*logical location of the chunks */ hsize_t idx_cur[H5O_LAYOUT_NDIMS]; /*multi-dimensional counters */ hsize_t idx_min[H5O_LAYOUT_NDIMS]; hsize_t idx_max[H5O_LAYOUT_NDIMS]; hsize_t sub_size[H5O_LAYOUT_NDIMS]; hsize_t naccessed; /*bytes accessed in chunk */ hsize_t end_chunk; /*chunk position counter */ hssize_t start[H5O_LAYOUT_NDIMS]; /*starting location of hyperslab */ hsize_t count[H5O_LAYOUT_NDIMS]; /*element count of hyperslab */ hsize_t size[H5O_LAYOUT_NDIMS]; /*current size of dimensions */ H5S_t *space_chunk = NULL; /*dataspace for a chunk */ hsize_t curr_dims[H5O_LAYOUT_NDIMS]; /*current dataspace dimensions */ int srank; /*current # of dimensions (signed) */ unsigned rank; /*current # of dimensions */ int i, carry; /*counters */ unsigned u; int found = 0; /*initialize this entry */ H5O_pline_t pline; /* I/O pipeline information */ H5O_fill_t fill; /* Fill value information */ H5D_fill_time_t fill_time; /* Fill time information */ herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_initialize_by_extent, FAIL); /* Check args */ assert(f); assert(layout && H5D_CHUNKED == layout->type); assert(layout->ndims > 0 && layout->ndims <= H5O_LAYOUT_NDIMS); assert(H5F_addr_defined(layout->addr)); assert(space); /* Get necessary properties from property list */ if(H5P_get(dc_plist, H5D_CRT_FILL_VALUE_NAME, &fill) < 0) HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get fill value"); if(H5P_get(dc_plist, H5D_CRT_FILL_TIME_NAME, &fill_time) < 0) HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get fill time"); if(H5P_get(dc_plist, H5D_CRT_DATA_PIPELINE_NAME, &pline) < 0) HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get data pipeline"); /* Reset start & count arrays */ HDmemset(start, 0, sizeof(start)); HDmemset(count, 0, sizeof(count)); /* Go get the rank & dimensions */ if((srank = H5S_get_simple_extent_dims(space, curr_dims, NULL)) < 0) HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get dataset dimensions"); rank=srank; /* Copy current dimensions */ for(u = 0; u < rank; u++) size[u] = curr_dims[u]; size[u] = layout->dim[u]; /* Create a data space for a chunk & set the extent */ if(NULL == (space_chunk = H5S_create_simple(rank,layout->dim,NULL))) HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCREATE, FAIL, "can't create simple dataspace"); /* * Set up multi-dimensional counters (idx_min, idx_max, and idx_cur) and * loop through the chunks copying each chunk from the application to the * chunk cache. */ for(u = 0; u < layout->ndims; u++) { idx_min[u] = 0; idx_max[u] = (size[u] - 1) / layout->dim[u] + 1; idx_cur[u] = idx_min[u]; } /* end for */ /* Loop over all chunks */ carry=0; while(carry==0) { for(u = 0, naccessed = 1; u < layout->ndims; u++) { /* The location and size of the chunk being accessed */ chunk_offset[u] = idx_cur[u] * (hssize_t)(layout->dim[u]); sub_size[u] = MIN((idx_cur[u] + 1) * layout->dim[u], size[u]) - chunk_offset[u]; naccessed *= sub_size[u]; } /* end for */ /* * Figure out what chunks have to be initialized. These are the chunks where the dataspace * extent boundary is within the chunk */ for(u = 0, found = 0; u < layout->ndims - 1; u++) { end_chunk = chunk_offset[u] + layout->dim[u]; if(end_chunk > size[u]) { found = 1; break; } } /* end for */ if(found) { if(NULL == (chunk = H5F_istore_lock(f, dxpl_cache, dxpl_id, layout, &pline, &fill, fill_time, chunk_offset, FALSE, &idx_hint))) HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "unable to read raw data chunk"); if(H5S_select_all(space_chunk,1) < 0) HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "unable to select space"); for(u = 0; u < rank; u++) count[u] = MIN((idx_cur[u] + 1) * layout->dim[u], size[u] - chunk_offset[u]); #if defined (H5F_ISTORE_DEBUG) HDfputs("cache:initialize:offset:[", stdout); for(u = 0; u < layout->ndims - 1; u++) HDfprintf(stdout, "%s%Hd", u ? ", " : "", chunk_offset[u]); HDfputs("]", stdout); HDfputs(":count:[", stdout); for(u = 0; u < layout->ndims - 1; u++) HDfprintf(stdout, "%s%Hd", u ? ", " : "", count[u]); HDfputs("]\n", stdout); #endif if(H5S_select_hyperslab(space_chunk, H5S_SELECT_NOTB, start, NULL, count, NULL) < 0) HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "unable to select hyperslab"); /* Fill the selection in the memory buffer */ /* Use the size of the elements in the chunk directly instead of */ /* relying on the fill.size, which might be set to 0 if there is */ /* no fill-value defined for the dataset -QAK */ H5_CHECK_OVERFLOW(size[rank],hsize_t,size_t); if(H5S_select_fill(fill.buf, (size_t)size[rank], space_chunk, chunk) < 0) HGOTO_ERROR(H5E_DATASET, H5E_CANTENCODE, FAIL, "filling selection failed"); if(H5F_istore_unlock(f, dxpl_cache, dxpl_id, layout, &pline, TRUE, chunk_offset, &idx_hint, chunk, (size_t)naccessed) < 0) HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "unable to unlock raw data chunk"); } /*found */ /* Increment indices */ for(i = layout->ndims - 1, carry = 1; i >= 0 && carry; --i) { if(++idx_cur[i] >= idx_max[i]) idx_cur[i] = idx_min[i]; else carry = 0; } /* end for */ } /* end while */ done: if(space_chunk) H5S_close(space_chunk); FUNC_LEAVE_NOAPI(ret_value); } /*------------------------------------------------------------------------- * Function: H5F_istore_delete * * Purpose: Delete raw data storage for entire dataset (i.e. all chunks) * * Return: Success: Non-negative * Failure: negative * * Programmer: Quincey Koziol * Thursday, March 20, 2003 * * Modifications: * *------------------------------------------------------------------------- */ herr_t H5F_istore_delete(H5F_t *f, hid_t dxpl_id, const struct H5O_layout_t *layout) { H5D_dxpl_cache_t dxpl_cache; /* Cached data transfer properties */ H5F_istore_ud1_t udata; /* User data for B-tree iterator call */ H5F_rdcc_t *rdcc = &(f->shared->rdcc); /* File's raw data chunk cache */ H5F_rdcc_ent_t *ent, *next; /* Pointers to cache entries */ herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_delete, FAIL); /* Fill the DXPL cache values for later use */ if (H5D_get_dxpl_cache(dxpl_id,&dxpl_cache)<0) HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill dxpl cache") /* Check if the B-tree has been created in the file */ if(H5F_addr_defined(layout->addr)) { /* Iterate through the entries in the cache, checking for the chunks to be deleted */ for (ent=rdcc->head; ent; ent=next) { /* Get pointer to next node, in case this one is deleted */ next=ent->next; /* Is the chunk to be deleted this cache entry? */ if(layout->addr==ent->layout->addr) /* Remove entry without flushing */ if (H5F_istore_preempt(f, &dxpl_cache, dxpl_id, ent, FALSE )<0) HGOTO_ERROR (H5E_IO, H5E_CANTFLUSH, FAIL, "unable to flush one or more raw data chunks"); } /* end for */ /* Set up user data for B-tree deletion */ HDmemset(&udata, 0, sizeof udata); udata.mesg = *layout; /* Delete entire B-tree */ if(H5B_delete(f, dxpl_id, H5B_ISTORE, layout->addr, &udata)<0) HGOTO_ERROR(H5E_IO, H5E_CANTDELETE, 0, "unable to delete chunk B-tree"); } /* end if */ done: FUNC_LEAVE_NOAPI(ret_value); } /* end H5F_istore_delete() */ /*------------------------------------------------------------------------- * Function: H5F_istore_dump_btree * * Purpose: Prints information about the storage B-tree to the specified * stream. * * Return: Success: Non-negative * * Failure: negative * * Programmer: Robb Matzke * Wednesday, April 28, 1999 * * Modifications: * Robb Matzke, 1999-07-28 * The ADDR argument is passed by value. *------------------------------------------------------------------------- */ herr_t H5F_istore_dump_btree(H5F_t *f, hid_t dxpl_id, FILE *stream, unsigned ndims, haddr_t addr) { H5F_istore_ud1_t udata; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_dump_btree, FAIL); HDmemset(&udata, 0, sizeof udata); udata.mesg.ndims = ndims; udata.stream = stream; if(stream) HDfprintf(stream, " Address: %a\n",addr); if(H5B_iterate(f, dxpl_id, H5B_ISTORE, H5F_istore_iter_dump, addr, &udata)<0) HGOTO_ERROR(H5E_IO, H5E_CANTINIT, 0, "unable to iterate over chunk B-tree"); done: FUNC_LEAVE_NOAPI(ret_value); } #ifdef H5F_ISTORE_DEBUG /*------------------------------------------------------------------------- * Function: H5F_istore_stats * * Purpose: Print raw data cache statistics to the debug stream. If * HEADERS is non-zero then print table column headers, * otherwise assume that the H5AC layer has already printed them. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Thursday, May 21, 1998 * * Modifications: * *------------------------------------------------------------------------- */ herr_t H5F_istore_stats (H5F_t *f, hbool_t headers) { H5F_rdcc_t *rdcc = &(f->shared->rdcc); double miss_rate; char ascii[32]; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_stats, FAIL); if (!H5DEBUG(AC)) HGOTO_DONE(SUCCEED); if (headers) { fprintf(H5DEBUG(AC), "H5F: raw data cache statistics for file %s\n", f->name); fprintf(H5DEBUG(AC), " %-18s %8s %8s %8s %8s+%-8s\n", "Layer", "Hits", "Misses", "MissRate", "Inits", "Flushes"); fprintf(H5DEBUG(AC), " %-18s %8s %8s %8s %8s-%-8s\n", "-----", "----", "------", "--------", "-----", "-------"); } #ifdef H5AC_DEBUG if (H5DEBUG(AC)) headers = TRUE; #endif if (headers) { if (rdcc->nhits>0 || rdcc->nmisses>0) { miss_rate = 100.0 * rdcc->nmisses / (rdcc->nhits + rdcc->nmisses); } else { miss_rate = 0.0; } if (miss_rate > 100) { sprintf(ascii, "%7d%%", (int) (miss_rate + 0.5)); } else { sprintf(ascii, "%7.2f%%", miss_rate); } fprintf(H5DEBUG(AC), " %-18s %8u %8u %7s %8d+%-9ld\n", "raw data chunks", rdcc->nhits, rdcc->nmisses, ascii, rdcc->ninits, (long)(rdcc->nflushes)-(long)(rdcc->ninits)); } done: FUNC_LEAVE_NOAPI(ret_value); } #endif /* H5F_ISTORE_DEBUG */ /*------------------------------------------------------------------------- * Function: H5F_istore_debug * * Purpose: Debugs a B-tree node for indexed raw data storage. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Thursday, April 16, 1998 * * Modifications: * Robb Matzke, 1999-07-28 * The ADDR argument is passed by value. *------------------------------------------------------------------------- */ herr_t H5F_istore_debug(H5F_t *f, hid_t dxpl_id, haddr_t addr, FILE * stream, int indent, int fwidth, int ndims) { H5F_istore_ud1_t udata; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5F_istore_debug, FAIL); HDmemset (&udata, 0, sizeof udata); udata.mesg.ndims = ndims; H5B_debug (f, dxpl_id, addr, stream, indent, fwidth, H5B_ISTORE, &udata); done: FUNC_LEAVE_NOAPI(ret_value); }