/* * Copyright (C) 1997 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, intn indent, intn 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 */ }}; #define H5O_LAYOUT_VERSION 1 /* Interface initialization */ #define PABLO_MASK H5O_layout_mask static intn 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. * *------------------------------------------------------------------------- */ static void * H5O_layout_decode(H5F_t *f, const uint8_t *p, H5O_shared_t UNUSED *sh) { H5O_layout_t *mesg = NULL; intn version; uintn u; FUNC_ENTER(H5O_layout_decode, NULL); /* check args */ assert(f); assert(p); assert (!sh); /* decode */ if (NULL==(mesg = H5FL_ALLOC(H5O_layout_t,1))) { HRETURN_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed"); } /* Version */ version = *p++; if (version!=H5O_LAYOUT_VERSION) { HRETURN_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL, "bad version number for layout message"); } /* Dimensionality */ mesg->ndims = *p++; if (mesg->ndims>H5O_LAYOUT_NDIMS) { H5FL_FREE(H5O_layout_t,mesg); HRETURN_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL, "dimensionality is too large"); } /* Layout class */ mesg->type = *p++; assert(H5D_CONTIGUOUS == mesg->type || H5D_CHUNKED == mesg->type); /* Reserved bytes */ p += 5; /* Address */ H5F_addr_decode(f, &p, &(mesg->addr)); /* Read the size */ for (u = 0; u < mesg->ndims; u++) { UINT32DECODE(p, mesg->dim[u]); } FUNC_LEAVE(mesg); } /*------------------------------------------------------------------------- * 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. * *------------------------------------------------------------------------- */ 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; uintn u; FUNC_ENTER(H5O_layout_encode, FAIL); /* check args */ assert(f); assert(mesg); assert(mesg->ndims > 0 && mesg->ndims <= H5O_LAYOUT_NDIMS); assert(p); /* Version */ *p++ = H5O_LAYOUT_VERSION; /* 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 */ H5F_addr_encode(f, &p, mesg->addr); /* dimension size */ for (u = 0; u < mesg->ndims; u++) { UINT32ENCODE(p, mesg->dim[u]); } FUNC_LEAVE(SUCCEED); } /*------------------------------------------------------------------------- * 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; FUNC_ENTER(H5O_layout_copy, NULL); /* check args */ assert(mesg); if (!dest && NULL==(dest=H5FL_ALLOC(H5O_layout_t,0))) { HRETURN_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed"); } /* copy */ *dest = *mesg; FUNC_LEAVE((void *) dest); } /*------------------------------------------------------------------------- * Function: H5O_layout_size * * Purpose: Returns the size of the raw message in bytes not counting the * message type or size fields, but only the data fields. 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 = 0; FUNC_ENTER(H5O_layout_size, 0); /* check args */ assert(f); assert(mesg); assert(mesg->ndims > 0 && mesg->ndims <= H5O_LAYOUT_NDIMS); ret_value = H5F_SIZEOF_ADDR(f) + /* B-tree address */ 1 + /* max dimension index */ 1 + /* layout class number */ 6 + /* reserved bytes */ mesg->ndims * 4; /* alignment */ 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) { FUNC_ENTER (H5O_layout_free, FAIL); assert (mesg); H5FL_FREE(H5O_layout_t,mesg); FUNC_LEAVE (SUCCEED); } /*------------------------------------------------------------------------- * 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, intn indent, intn fwidth) { const H5O_layout_t *mesg = (const H5O_layout_t *) _mesg; uintn u; FUNC_ENTER(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"); FUNC_LEAVE(SUCCEED); }