/* * Copyright (C) 1998 NCSA * All rights reserved. * * Programmer: Robb Matzke * Wednesday, September 30, 1998 * * Purpose: The fill message indicates a bit pattern to use for * uninitialized data points of a dataset. */ #include #include #include #include #include #include #define PABLO_MASK H5O_fill_mask static void *H5O_fill_decode(H5F_t *f, const uint8_t *p, H5O_shared_t *sh); static herr_t H5O_fill_encode(H5F_t *f, uint8_t *p, const void *_mesg); static void *H5O_fill_copy(const void *_mesg, void *_dest); static size_t H5O_fill_size(H5F_t *f, const void *_mesg); static herr_t H5O_fill_reset(void *_mesg); static herr_t H5O_fill_debug(H5F_t *f, const void *_mesg, FILE *stream, intn indent, intn fwidth); /* This message derives from H5O */ const H5O_class_t H5O_FILL[1] = {{ H5O_FILL_ID, /*message id number */ "fill", /*message name for debugging */ sizeof(H5O_fill_t), /*native message size */ H5O_fill_decode, /*decode message */ H5O_fill_encode, /*encode message */ H5O_fill_copy, /*copy the native value */ H5O_fill_size, /*raw message size */ H5O_fill_reset, /*free internal memory */ NULL, /* free method */ NULL, /*get share method */ NULL, /*set share method */ H5O_fill_debug, /*debug the message */ }}; /* Interface initialization */ static intn interface_initialize_g = 0; #define INTERFACE_INIT NULL /*------------------------------------------------------------------------- * Function: H5O_fill_decode * * Purpose: Decode a fill value message. * * Return: Success: Ptr to new message in native struct. * * Failure: NULL * * Programmer: Robb Matzke * Wednesday, September 30, 1998 * * Modifications: * *------------------------------------------------------------------------- */ static void * H5O_fill_decode(H5F_t UNUSED *f, const uint8_t *p, H5O_shared_t UNUSED *sh) { H5O_fill_t *mesg=NULL; void *ret_value = NULL; FUNC_ENTER(H5O_fill_decode, NULL); assert(f); assert(p); assert(!sh); if (NULL==(mesg=H5MM_calloc(sizeof(H5O_fill_t)))) { HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for fill value message"); } UINT32DECODE(p, mesg->size); if (mesg->size>0) { if (NULL==(mesg->buf=H5MM_malloc(mesg->size))) { HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for fill value"); } HDmemcpy(mesg->buf, p, mesg->size); } ret_value = (void*)mesg; done: if (!ret_value && mesg) { H5MM_xfree(mesg->buf); H5MM_xfree(mesg); } FUNC_LEAVE(ret_value); } /*------------------------------------------------------------------------- * Function: H5O_fill_encode * * Purpose: Encode a fill value message. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Thursday, October 1, 1998 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5O_fill_encode(H5F_t UNUSED *f, uint8_t *p, const void *_mesg) { const H5O_fill_t *mesg = (const H5O_fill_t *)_mesg; FUNC_ENTER(H5O_fill_encode, FAIL); assert(f); assert(p); assert(mesg && NULL==mesg->type); UINT32ENCODE(p, mesg->size); HDmemcpy(p, mesg->buf, mesg->size); FUNC_LEAVE(SUCCEED); } /*------------------------------------------------------------------------- * Function: H5O_fill_copy * * Purpose: Copies a message from _MESG to _DEST, allocating _DEST if * necessary. * * Return: Success: Ptr to _DEST * * Failure: NULL * * Programmer: Robb Matzke * Thursday, October 1, 1998 * * Modifications: * *------------------------------------------------------------------------- */ static void * H5O_fill_copy(const void *_mesg, void *_dest) { const H5O_fill_t *mesg = (const H5O_fill_t *)_mesg; H5O_fill_t *dest = (H5O_fill_t *)_dest; void *ret_value = NULL; FUNC_ENTER(H5O_fill_copy, NULL); assert(mesg); if (!dest && NULL==(dest=H5MM_calloc(sizeof(H5O_fill_t)))) { HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for fill message"); } if (mesg->type && NULL==(dest->type=H5T_copy(mesg->type, H5T_COPY_TRANSIENT))) { HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, NULL, "unable to copy fill value data type"); } if (mesg->buf) { if (NULL==(dest->buf=H5MM_malloc(mesg->size))) { HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for fill value"); } dest->size = mesg->size; HDmemcpy(dest->buf, mesg->buf, mesg->size); } ret_value = dest; done: if (!ret_value && dest) { H5MM_xfree(dest->buf); if (dest->type) H5T_close(dest->type); if (!_dest) H5MM_xfree(dest); } FUNC_LEAVE(ret_value); } /*------------------------------------------------------------------------- * Function: H5O_fill_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 alignment. * * Return: Success: Message data size in bytes w/o alignment. * * Failure: 0 * * Programmer: Robb Matzke * Thursday, October 1, 1998 * * Modifications: * *------------------------------------------------------------------------- */ static size_t H5O_fill_size(H5F_t UNUSED *f, const void *_mesg) { const H5O_fill_t *mesg = (const H5O_fill_t *)_mesg; FUNC_ENTER(H5O_fill_size, 0); assert(f); assert(mesg); FUNC_LEAVE(4+mesg->size); } /*------------------------------------------------------------------------- * Function: H5O_fill_reset * * Purpose: Resets a message to an initial state * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Thursday, October 1, 1998 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5O_fill_reset(void *_mesg) { H5O_fill_t *mesg = (H5O_fill_t *)_mesg; FUNC_ENTER(H5O_fill_reset, FAIL); assert(mesg); mesg->buf = H5MM_xfree(mesg->buf); mesg->size = 0; if (mesg->type) { H5T_close(mesg->type); mesg->type = NULL; } FUNC_LEAVE(SUCCEED); } /*------------------------------------------------------------------------- * Function: H5O_fill_debug * * Purpose: Prints debugging info for the message. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Thursday, October 1, 1998 * * Modifications: * *------------------------------------------------------------------------- */ static herr_t H5O_fill_debug(H5F_t UNUSED *f, const void *_mesg, FILE *stream, intn indent, intn fwidth) { const H5O_fill_t *mesg = (const H5O_fill_t *)_mesg; FUNC_ENTER(H5O_fill_debug, FAIL); assert(f); assert(mesg); assert(stream); assert(indent>=0); assert(fwidth>=0); HDfprintf(stream, "%*s%-*s %Zu\n", indent, "", fwidth, "Bytes:", mesg->size); fprintf(stream, "%*s%-*s ", indent, "", fwidth, "Data type:"); if (mesg->type) { H5T_debug(mesg->type, stream); fprintf(stream, "\n"); } else { fprintf(stream, "\n"); } FUNC_LEAVE(SUCCEED); } /*------------------------------------------------------------------------- * Function: H5O_fill_convert * * Purpose: Convert a fill value from whatever data type it currently has * to the specified dataset type. The `type' field of the fill * value struct will be set to NULL to indicate that it has the * same type as the dataset. * * Return: Non-negative on success/Negative on failure * * Programmer: Robb Matzke * Thursday, October 1, 1998 * * Modifications: * *------------------------------------------------------------------------- */ herr_t H5O_fill_convert(H5O_fill_t *fill, H5T_t *dset_type) { H5T_path_t *tpath=NULL; /*type conversion info */ void *buf=NULL, *bkg=NULL; /*conversion buffers */ hid_t src_id=-1, dst_id=-1; /*data type identifiers */ herr_t ret_value=FAIL; /*return value */ FUNC_ENTER(H5O_fill_convert, FAIL); assert(fill); assert(dset_type); /* No-op cases */ if (!fill->buf || !fill->type || 0==H5T_cmp(fill->type, dset_type)) { if (fill->type) H5T_close(fill->type); fill->type = NULL; HRETURN(SUCCEED); } /* * Can we convert between source and destination data types? */ if (NULL==(tpath=H5T_path_find(fill->type, dset_type, NULL, NULL))) { HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to convert between src and dst data types"); } if ((src_id = H5I_register(H5I_DATATYPE, H5T_copy(fill->type, H5T_COPY_TRANSIENT)))<0 || (dst_id = H5I_register(H5I_DATATYPE, H5T_copy(dset_type, H5T_COPY_TRANSIENT)))<0) { HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to copy/register data type"); } /* * Data type conversions are always done in place, so we need a buffer * that is large enough for both source and destination. */ if (H5T_get_size(fill->type)>=H5T_get_size(dset_type)) { buf = fill->buf; } else { if (NULL==(buf=H5MM_malloc(H5T_get_size(dset_type)))) { HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed for type conversion"); } HDmemcpy(buf, fill->buf, H5T_get_size(fill->type)); } if (tpath->cdata.need_bkg>=H5T_BKG_TEMP && NULL==(bkg=H5MM_malloc(H5T_get_size(dset_type)))) { HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed for type conversion"); } /* Do the conversion */ if (H5T_convert(tpath, src_id, dst_id, (hsize_t)1, 0, 0, buf, bkg, H5P_DEFAULT)<0) { HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "data type conversion failed"); } /* Update the fill message */ if (buf!=fill->buf) { H5MM_xfree(fill->buf); fill->buf = buf; } H5T_close(fill->type); fill->type = NULL; fill->size = H5T_get_size(dset_type); ret_value = SUCCEED; done: if (src_id>=0) H5I_dec_ref(src_id); if (dst_id>=0) H5I_dec_ref(dst_id); if (buf!=fill->buf) H5MM_xfree(buf); H5MM_xfree(bkg); FUNC_LEAVE(ret_value); }