diff options
Diffstat (limited to 'src/H5C.c')
| -rw-r--r-- | src/H5C.c | 194 |
1 files changed, 64 insertions, 130 deletions
@@ -8130,12 +8130,12 @@ done: * Function: H5C_load_entry * * Purpose: Attempt to load the entry at the specified disk address - * and with the specified type into memory. If successful. - * return the in memory address of the entry. Return NULL - * on failure. + * and with the specified type into memory. If successful. + * return the in memory address of the entry. Return NULL + * on failure. * - * Note that this function simply loads the entry into - * core. It does not insert it into the cache. + * Note that this function simply loads the entry into + * core. It does not insert it into the cache. * * Return: Non-NULL on success / NULL on failure. * @@ -8144,35 +8144,35 @@ done: *------------------------------------------------------------------------- */ static void * -H5C_load_entry(H5F_t * f, - hid_t dxpl_id, +H5C_load_entry(H5F_t * f, + hid_t dxpl_id, #ifdef H5_HAVE_PARALLEL - hbool_t coll_access, + hbool_t coll_access, #endif /* H5_HAVE_PARALLEL */ - const H5C_class_t * type, - haddr_t addr, - void * udata) + const H5C_class_t * type, + haddr_t addr, + void * udata) { - hbool_t dirty = FALSE; /* Flag indicating whether thing was dirtied during deserialize */ - hbool_t compressed = FALSE; /* flag indicating whether thing */ - /* will be run through filters on */ - /* on read and write. Usually FALSE */ - /* set to true if appropriate. */ - size_t compressed_size = 0; /* entry compressed size if */ - /* known -- otherwise uncompressed. */ - /* Zero indicates compression not */ - /* enabled. */ - void * image = NULL; /* Buffer for disk image */ - void * thing = NULL; /* Pointer to thing loaded */ - H5C_cache_entry_t * entry; /* Alias for thing loaded, as cache entry */ - size_t len; /* Size of image in file */ - unsigned u; /* Local index variable */ + hbool_t dirty = FALSE; /* Flag indicating whether thing was dirtied during deserialize */ + hbool_t compressed = FALSE; /* flag indicating whether thing */ + /* will be run through filters on */ + /* on read and write. Usually FALSE */ + /* set to true if appropriate. */ + size_t compressed_size = 0; /* entry compressed size if */ + /* known -- otherwise uncompressed. */ + /* Zero indicates compression not */ + /* enabled. */ + void * image = NULL; /* Buffer for disk image */ + void * thing = NULL; /* Pointer to thing loaded */ + H5C_cache_entry_t *entry = NULL; /* Alias for thing loaded, as cache entry */ + size_t len; /* Size of image in file */ + unsigned u; /* Local index variable */ #ifdef H5_HAVE_PARALLEL - int mpi_rank = 0; /* MPI process rank */ - MPI_Comm comm = MPI_COMM_NULL; /* File MPI Communicator */ - int mpi_code; /* MPI error code */ + int mpi_rank = 0; /* MPI process rank */ + MPI_Comm comm = MPI_COMM_NULL; /* File MPI Communicator */ + int mpi_code; /* MPI error code */ #endif /* H5_HAVE_PARALLEL */ - void * ret_value = NULL; /* Return value */ + void * ret_value = NULL; /* Return value */ FUNC_ENTER_NOAPI_NOINIT @@ -8211,74 +8211,15 @@ H5C_load_entry(H5F_t * f, /* Check for possible speculative read off the end of the file */ if(type->flags & H5C__CLASS_SPECULATIVE_LOAD_FLAG) { -/* Quincey has added patches for eoa calculations -- leave the original - * code around until we see the effect of these patches. - * JRM -- 1/1/15 - */ -#if 0 /* original code */ /* JRM */ - /* the original version of this code has several problems: - * - * First, the sblock is not available until the sblock - * has been read in, which causes a seg fault. This is - * dealt with easily enough by testing to see if - * f->shared->sblock is NULL, and calling H5FD_get_base_addr() - * to obtain the base addr when it is. - * - * The second issue is more subtle. H5F_get_eoa() calls - * H5FD_get_eoa(). However, this function returns the EOA as - * a relative address -- i.e. relative to the base address. - * This means that the base addr + addr < eoa sanity check will - * fail whenever the super block is not at address 0 when - * reading in the first chunk of the super block. - * - * To address these issues, I have rewritten the code to - * simply verify that the address plus length is less than - * the eoa. I think this is sufficient, but further testing - * should tell me if it isn't. - * JRM -- 8/29/14 - */ - haddr_t eoa; /* End-of-allocation in the file */ - haddr_t base_addr; /* Base address of file data */ - - /* Get the file's end-of-allocation value */ - eoa = H5F_get_eoa(f, type->mem_type); - HDassert(H5F_addr_defined(eoa)); - - /* Get the file's base address */ - if ( f->shared->sblock ) - - base_addr = H5F_BASE_ADDR(f); - - else { /* sblock not loaded yet -- use file driver info */ - - HDassert(f->shared->lf); - base_addr = H5FD_get_base_addr(f->shared->lf); - - } - HDassert(H5F_addr_defined(base_addr)); - - /* Check for bad address in general */ - if((addr + base_addr) > eoa) - HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, NULL, \ - "address of object past end of allocation") - - /* Check if the amount of data to read will be past the eoa */ - if((addr + base_addr + len) > eoa) - /* Trim down the length of the metadata */ - len = (size_t)(eoa - (addr + base_addr)); - -#else /* modified code */ /* JRM */ - haddr_t eoa; /* End-of-allocation in the file */ H5FD_mem_t cooked_type; - /* if type == H5FD_MEM_GHEAP, H5F_block_read() forces + /* if type == H5FD_MEM_GHEAP, H5F_block_read() forces * type to H5FD_MEM_DRAW via its call to H5F__accum_read(). * Thus we do the same for purposes of computing the eoa * for sanity checks. */ - cooked_type = - (type->mem_type == H5FD_MEM_GHEAP) ? H5FD_MEM_DRAW : type->mem_type; + cooked_type = (type->mem_type == H5FD_MEM_GHEAP) ? H5FD_MEM_DRAW : type->mem_type; /* Get the file's end-of-allocation value */ eoa = H5F_get_eoa(f, cooked_type); @@ -8287,27 +8228,23 @@ H5C_load_entry(H5F_t * f, /* Check for bad address in general */ if ( H5F_addr_gt(addr, eoa) ) - - HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, NULL, \ - "address of object past end of allocation") + HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, NULL, "address of object past end of allocation") /* Check if the amount of data to read will be past the eoa */ if( H5F_addr_gt((addr + len), eoa) ) { /* Trim down the length of the metadata */ - /* Note that for some cache clients, this will cause an - * assertion failure. JRM -- 8/29/14 + * assertion failure. JRM -- 8/29/14 */ len = (size_t)(eoa - addr); - } + } /* end if */ if ( len <= 0 ) - HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, NULL, \ - "len not positive after adjustment for EOA.") + HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, NULL, "len not positive after adjustment for EOA.") + + } /* end if */ -#endif /* modified code */ /* JRM */ - } /* Allocate the buffer for reading the on-disk entry image */ if(NULL == (image = H5MM_malloc(len + H5C_IMAGE_EXTRA_SPACE))) HGOTO_ERROR(H5E_CACHE, H5E_CANTALLOC, NULL, "memory allocation failed for on disk image buffer.") @@ -8330,14 +8267,17 @@ H5C_load_entry(H5F_t * f, #ifdef H5_HAVE_PARALLEL if(!coll_access || 0 == mpi_rank) { #endif /* H5_HAVE_PARALLEL */ + if(H5F_block_read(f, type->mem_type, addr, len, dxpl_id, image) < 0) HGOTO_ERROR(H5E_CACHE, H5E_READERROR, NULL, "Can't read image*") #ifdef H5_HAVE_PARALLEL } /* end if */ + /* if the collective metadata read optimization is turned on, - bcast the metadata read from process 0 to all ranks in the file - communicator */ + * bcast the metadata read from process 0 to all ranks in the file + * communicator + */ if(coll_access) { int buf_size; @@ -8356,7 +8296,7 @@ H5C_load_entry(H5F_t * f, if(type->image_len) { size_t new_len; /* New size of on-disk image */ - /* set magic and type field in *entry_ptr. While the image_len + /* set magic and type field in *entry_ptr. While the image_len * callback shouldn't touch the cache specific fields, it may check * these fields to ensure that it it has received the expected * value. @@ -8368,22 +8308,22 @@ H5C_load_entry(H5F_t * f, entry->magic = H5C__H5C_CACHE_ENTRY_T_MAGIC; entry->type = type; - /* verify that compressed and compressed_len are initialized */ + /* verify that compressed and compressed_len are initialized */ HDassert(compressed == FALSE); HDassert(compressed_size == 0); /* Get the actual image size for the thing */ if(type->image_len(thing, &new_len, &compressed, &compressed_size) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTGET, NULL, "can't retrieve image length") + HGOTO_ERROR(H5E_CACHE, H5E_CANTGET, NULL, "can't retrieve image length") - if(new_len == 0) - HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, NULL, "image length is 0") + if(new_len == 0) + HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, NULL, "image length is 0") HDassert(((type->flags & H5C__CLASS_COMPRESSED_FLAG) != 0) || ((compressed == FALSE) && (compressed_size == 0))); HDassert((compressed == TRUE) || (compressed_size == 0)); - if(new_len != len) { + if(new_len != len) { if(type->flags & H5C__CLASS_COMPRESSED_FLAG) { @@ -8395,12 +8335,12 @@ H5C_load_entry(H5F_t * f, * size -- which must equal len. * * We can't verify the uncompressed size, but we can - * verify the rest with the following assertions. + * verify the rest with the following assertions. */ - HDassert(compressed); + HDassert(compressed); HDassert(compressed_size == len); - /* new_len should contain the uncompressed size. Set len + /* new_len should contain the uncompressed size. Set len * equal to new_len, so that the cache will use the * uncompressed size for purposes of space allocation, etc. */ @@ -8410,11 +8350,11 @@ H5C_load_entry(H5F_t * f, void *new_image; /* Buffer for disk image */ - /* compressed must be FALSE, and compressed_size + /* compressed must be FALSE, and compressed_size * must be zero. */ - HDassert(!compressed); - HDassert(compressed_size == 0); + HDassert(!compressed); + HDassert(compressed_size == 0); /* Adjust the size of the image to match new_len */ if(NULL == (new_image = H5MM_realloc(image, @@ -8425,9 +8365,7 @@ H5C_load_entry(H5F_t * f, image = new_image; #if H5C_DO_MEMORY_SANITY_CHECKS - HDmemcpy(((uint8_t *)image) + new_len, H5C_IMAGE_SANITY_VALUE, H5C_IMAGE_EXTRA_SPACE); - #endif /* H5C_DO_MEMORY_SANITY_CHECKS */ /* If the thing's image needs to be bigger for a speculatively @@ -8452,6 +8390,7 @@ H5C_load_entry(H5F_t * f, #ifdef H5_HAVE_PARALLEL if(!coll_access || 0 == mpi_rank) { #endif /* H5_HAVE_PARALLEL */ + /* Go get the on-disk image again */ if(H5F_block_read(f, type->mem_type, addr, new_len, dxpl_id, image) < 0) @@ -8472,13 +8411,12 @@ H5C_load_entry(H5F_t * f, #endif /* H5_HAVE_PARALLEL */ /* Deserialize on-disk image into native memory form again */ - if(NULL == (thing = type->deserialize(image, new_len, - udata, &dirty))) + if(NULL == (thing = type->deserialize(image, new_len, udata, &dirty))) HGOTO_ERROR(H5E_CACHE, H5E_CANTLOAD, NULL, "Can't deserialize image") #ifndef NDEBUG - { - /* new_compressed and new_compressed_size must be + { + /* new_compressed and new_compressed_size must be * initialize to FALSE / 0 respectively, as clients * that don't use compression may ignore these two * parameters. @@ -8500,7 +8438,7 @@ H5C_load_entry(H5F_t * f, HDassert(new_new_len == new_len); HDassert(!new_compressed); HDassert(new_compressed_size == 0); - } + } /* end block */ #endif /* NDEBUG */ } /* end if (new_len > len) */ @@ -8512,7 +8450,7 @@ H5C_load_entry(H5F_t * f, HGOTO_ERROR(H5E_CACHE, H5E_UNSUPPORTED, NULL, \ "size of non-speculative, non-compressed object changed") } - } /* end if (new_len != len) */ + } /* end if (new_len != len) */ } /* end if */ entry = (H5C_cache_entry_t *)thing; @@ -8564,10 +8502,10 @@ H5C_load_entry(H5F_t * f, entry->flush_in_progress = FALSE; entry->destroy_in_progress = FALSE; - entry->ring = H5C_RING_UNDEFINED; + entry->ring = H5C_RING_UNDEFINED; /* Initialize flush dependency height fields */ - entry->flush_dep_parent = NULL; + entry->flush_dep_parent = NULL; for(u = 0; u < H5C__NUM_FLUSH_DEP_HEIGHTS; u++) entry->child_flush_dep_height_rc[u] = 0; entry->flush_dep_height = 0; @@ -8592,13 +8530,9 @@ H5C_load_entry(H5F_t * f, done: /* Cleanup on error */ if(NULL == ret_value) { - /* Release resources */ - if ( thing && type->free_icr(thing) < 0 ) - - HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, NULL, \ - "free_icr callback failed") - + if(thing && type->free_icr(thing) < 0) + HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, NULL, "free_icr callback failed") if(image) image = H5MM_xfree(image); } /* end if */ |