/* * Copyright (C) 1997-2001 NCSA * All rights reserved. * * Programmer: Robb Matzke * Wednesday, October 8, 1997 * * Purpose: Messages related to data layout. */ #include "H5private.h" #include "H5Dprivate.h" #include "H5Eprivate.h" #include "H5FLprivate.h" /*Free Lists */ #include "H5MMprivate.h" #include "H5Oprivate.h" /* PRIVATE PROTOTYPES */ static void *H5O_layout_decode(H5F_t *f, const uint8_t *p, H5O_shared_t *sh); static herr_t H5O_layout_encode(H5F_t *f, uint8_t *p, const void *_mesg); static void *H5O_layout_copy(const void *_mesg, void *_dest); static size_t H5O_layout_size(H5F_t *f, const void *_mesg); static herr_t H5O_layout_free (void *_mesg); static herr_t H5O_layout_debug(H5F_t *f, const void *_mesg, FILE * stream, int indent, int fwidth); /* This message derives from H5O */ const H5O_class_t H5O_LAYOUT[1] = {{ H5O_LAYOUT_ID, /*message id number */ "layout", /*message name for debugging */ sizeof(H5O_layout_t), /*native message size */ H5O_layout_decode, /*decode message */ H5O_layout_encode, /*encode message */ H5O_layout_copy, /*copy the native value */ H5O_layout_size, /*size of message on disk */ NULL, /*reset method */ H5O_layout_free, /*free the struct */ NULL, /*get share method */ NULL, /*set share method */ H5O_layout_debug, /*debug the message */ }}; /* For forward and backward compatibility. Version is 1 when space is * allocated; 2 when space is delayed for allocation. */ #define H5O_LAYOUT_VERSION_1 1 #define H5O_LAYOUT_VERSION_2 2 /* Interface initialization */ #define PABLO_MASK H5O_layout_mask static int interface_initialize_g = 0; #define INTERFACE_INIT NULL /* Declare a free list to manage the H5O_layout_t struct */ H5FL_DEFINE(H5O_layout_t); /*------------------------------------------------------------------------- * Function: H5O_layout_decode * * Purpose: Decode an data layout message and return a pointer to a * new one created with malloc(). * * Return: Success: Ptr to new message in native order. * * Failure: NULL * * Programmer: Robb Matzke * Wednesday, October 8, 1997 * * Modifications: * Robb Matzke, 1998-07-20 * Rearranged the message to add a version number at the beginning. * * Raymond Lu, 2002-2-26 * Added version number 2 case depends on if space has been allocated * at the moment when layout header message is updated. * *------------------------------------------------------------------------- */ static void * H5O_layout_decode(H5F_t *f, const uint8_t *p, H5O_shared_t UNUSED *sh) { H5O_layout_t *mesg = NULL; int version; unsigned u; void *ret_value; /* Return value */ FUNC_ENTER_NOAPI(H5O_layout_decode, NULL); /* check args */ assert(f); assert(p); assert (!sh); /* decode */ if (NULL==(mesg = H5FL_ALLOC(H5O_layout_t,1))) HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed"); /* Version. 1 when space allocated; 2 when space allocation is delayed */ version = *p++; if (version!=H5O_LAYOUT_VERSION_1 && version!=H5O_LAYOUT_VERSION_2) HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL, "bad version number for layout message"); /* Dimensionality */ mesg->ndims = *p++; if (mesg->ndims>H5O_LAYOUT_NDIMS) HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL, "dimensionality is too large"); /* Layout class */ mesg->type = *p++; assert(H5D_CONTIGUOUS == mesg->type || H5D_CHUNKED == mesg->type || H5D_COMPACT == mesg->type); /* Reserved bytes */ p += 5; /* Address */ if(mesg->type!=H5D_COMPACT) H5F_addr_decode(f, &p, &(mesg->addr)); /* Read the size */ for (u = 0; u < mesg->ndims; u++) UINT32DECODE(p, mesg->dim[u]); if(mesg->type == H5D_COMPACT) { UINT32DECODE(p, mesg->size); if(mesg->size > 0) { if(NULL==(mesg->buf=H5MM_malloc(mesg->size))) { HRETURN_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for fill value"); } HDmemcpy(mesg->buf, p, mesg->size); p += mesg->size; } } /* Set return value */ ret_value=mesg; done: if(ret_value==NULL) { if(mesg) H5FL_FREE(H5O_layout_t,mesg); } /* end if */ FUNC_LEAVE(ret_value); } /*------------------------------------------------------------------------- * Function: H5O_layout_encode * * Purpose: Encodes a message. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Wednesday, October 8, 1997 * * Modifications: * Robb Matzke, 1998-07-20 * Rearranged the message to add a version number at the beginning. * * Raymond Lu, 2002-2-26 * Added version number 2 case depends on if space has been allocated * at the moment when layout header message is updated. * *------------------------------------------------------------------------- */ static herr_t H5O_layout_encode(H5F_t *f, uint8_t *p, const void *_mesg) { const H5O_layout_t *mesg = (const H5O_layout_t *) _mesg; unsigned u; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5O_layout_encode, FAIL); /* check args */ assert(f); assert(mesg); assert(mesg->ndims > 0 && mesg->ndims <= H5O_LAYOUT_NDIMS); assert(p); /* Version: 1 when space allocated; 2 when space allocation is delayed */ if(mesg->type==H5D_CONTIGUOUS) { if(mesg->addr==HADDR_UNDEF) *p++ = H5O_LAYOUT_VERSION_2; else *p++ = H5O_LAYOUT_VERSION_1; } else if(mesg->type==H5D_COMPACT) { *p++ = H5O_LAYOUT_VERSION_2; } else *p++ = H5O_LAYOUT_VERSION_1; /* number of dimensions */ *p++ = mesg->ndims; /* layout class */ *p++ = mesg->type; /* reserved bytes should be zero */ for (u=0; u<5; u++) *p++ = 0; /* data or B-tree address */ if(mesg->type!=H5D_COMPACT) H5F_addr_encode(f, &p, mesg->addr); /* dimension size */ for (u = 0; u < mesg->ndims; u++) UINT32ENCODE(p, mesg->dim[u]); if(mesg->type==H5D_COMPACT) { UINT32ENCODE(p, mesg->size); if(mesg->size>0 && mesg->buf) { H5_CHECK_OVERFLOW(mesg->size,ssize_t,size_t); HDmemcpy(p, mesg->buf, mesg->size); p += mesg->size; } } done: FUNC_LEAVE(ret_value); } /*------------------------------------------------------------------------- * Function: H5O_layout_copy * * Purpose: Copies a message from _MESG to _DEST, allocating _DEST if * necessary. * * Return: Success: Ptr to _DEST * * Failure: NULL * * Programmer: Robb Matzke * Wednesday, October 8, 1997 * * Modifications: * *------------------------------------------------------------------------- */ static void * H5O_layout_copy(const void *_mesg, void *_dest) { const H5O_layout_t *mesg = (const H5O_layout_t *) _mesg; H5O_layout_t *dest = (H5O_layout_t *) _dest; void *ret_value; /* Return value */ FUNC_ENTER_NOAPI(H5O_layout_copy, NULL); /* check args */ assert(mesg); if (!dest && NULL==(dest=H5FL_ALLOC(H5O_layout_t,0))) HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed"); /* copy */ *dest = *mesg; /* Set return value */ ret_value=dest; done: FUNC_LEAVE(ret_value); } /*------------------------------------------------------------------------- * Function: H5O_layout_meta_size * * Purpose: Returns the size of the raw message in bytes except raw data * part for compact dataset. This function doesn't take into * account message alignment. * * Return: Success: Message data size in bytes(except raw data * for compact dataset) * Failure: 0 * * Programmer: Raymond Lu * August 14, 2002 * * Modifications: * *------------------------------------------------------------------------- */ size_t H5O_layout_meta_size(H5F_t *f, const void *_mesg) { const H5O_layout_t *mesg = (const H5O_layout_t *) _mesg; size_t ret_value; FUNC_ENTER_NOAPI(H5O_layout_meta_size, 0); /* check args */ assert(f); assert(mesg); assert(mesg->ndims > 0 && mesg->ndims <= H5O_LAYOUT_NDIMS); ret_value = 1 + /* Version number */ 1 + /* layout class type */ 1 + /* dimensionality */ 5 + /* reserved bytes */ mesg->ndims * 4; /* size of each dimension */ if(mesg->type==H5D_COMPACT) ret_value += 4; /* size field for compact dataset */ else ret_value += H5F_SIZEOF_ADDR(f); /* file address of data or B-tree for chunked dataset */ done: FUNC_LEAVE(ret_value); } /*------------------------------------------------------------------------- * Function: H5O_layout_size * * Purpose: Returns the size of the raw message in bytes. If it's * compact dataset, the data part is also included. * This function doesn't take into account message alignment. * * Return: Success: Message data size in bytes * * Failure: 0 * * Programmer: Robb Matzke * Wednesday, October 8, 1997 * * Modifications: * *------------------------------------------------------------------------- */ static size_t H5O_layout_size(H5F_t *f, const void *_mesg) { const H5O_layout_t *mesg = (const H5O_layout_t *) _mesg; size_t ret_value; FUNC_ENTER_NOAPI(H5O_layout_size, 0); /* check args */ assert(f); assert(mesg); assert(mesg->ndims > 0 && mesg->ndims <= H5O_LAYOUT_NDIMS); ret_value = H5O_layout_meta_size(f, mesg); if(mesg->type==H5D_COMPACT) ret_value += mesg->size;/* data for compact dataset */ done: FUNC_LEAVE(ret_value); } /*------------------------------------------------------------------------- * Function: H5O_layout_free * * Purpose: Free's the message * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Saturday, March 11, 2000 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5O_layout_free (void *mesg) { herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5O_layout_free, FAIL); assert (mesg); H5FL_FREE(H5O_layout_t,mesg); done: FUNC_LEAVE (ret_value); } /*------------------------------------------------------------------------- * Function: H5O_layout_debug * * Purpose: Prints debugging info for a message. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Wednesday, October 8, 1997 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5O_layout_debug(H5F_t UNUSED *f, const void *_mesg, FILE * stream, int indent, int fwidth) { const H5O_layout_t *mesg = (const H5O_layout_t *) _mesg; unsigned u; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5O_layout_debug, FAIL); /* check args */ assert(f); assert(mesg); assert(stream); assert(indent >= 0); assert(fwidth >= 0); HDfprintf(stream, "%*s%-*s %a\n", indent, "", fwidth, H5D_CHUNKED == mesg->type ? "B-tree address:" : "Data address:", mesg->addr); HDfprintf(stream, "%*s%-*s %lu\n", indent, "", fwidth, "Number of dimensions:", (unsigned long) (mesg->ndims)); /* Size */ HDfprintf(stream, "%*s%-*s {", indent, "", fwidth, "Size:"); for (u = 0; u < mesg->ndims; u++) { HDfprintf(stream, "%s%lu", u ? ", " : "", (unsigned long) (mesg->dim[u])); } HDfprintf(stream, "}\n"); done: FUNC_LEAVE(ret_value); }