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SwRI can revise these Terms at any time * without notice by updating this posting. * * Trademarks * * The SwRI logo is a trademark of SwRI in the United States and other countries. * */ #ident "@(#) $Id: create_dstr.c 20217 2009-01-29 21:54:52Z carrie $ SwRI" #include "ret_codes.h" #include "libbase_idfs.h" #include "libVIDF.h" /******************************************************************************* * * * CREATE_DATA_STRUCTURE SUBROUTINE * * * * DESCRIPTION * * This routine is called to create or allocate a data structure that holds * * the idfs data once it is read from the files. The type of data structure * * allocated depends upon the IDFS data source being processed - either * * conventional idfs data, with a dependency based upon a scanning variable * * or multi-dimensional tensor idfs data. The address of the newly allocated * * data structure is passed back to the calling module. An array of pointers * * is maintained so that when FREE_EXPERIMENT_INFO is called, the memory for * * all allocated data structures can be freed. * * * * INPUT VARIABLES * * SDDAS_ULONG data_key key which uniquely identifies the data set * * being processed * * SDDAS_CHAR *exten filename extension for the data to be used * * SDDAS_USHORT vnum version number to be associated with this * * combination (allows for multiple opens) * * void **data_ptr ptr to the memory location that holds the * * address of the structure that holds returned* * data values (either idf_data or tensor_data)* * * * USAGE * * x = create_data_structure (data_key, exten, vnum, &data_ptr) * * * * NECESSARY SUBPROGRAMS * * ir_locate_ex() determines if the requested combination has * * already been processed and points to the * * correct structure allocated for the combo * * create_idf_data_structure () creates an instance of the idf_data * * structure that holds data returned by * * read_drec() * * create_tensor_data_structure () creates an instance of the tensor_data* * structure that holds data returned by * * read_tensor_data() * * * * EXTERNAL VARIABLES * * struct general_info ginfo structure that holds information concerning * * the experiment that is being processed * * * * INTERNAL VARIABLES * * struct experiment_info *ex a pointer to the structure that holds * * specific experiment information * * SDDAS_SHORT ret_val the value returned by the called routine * * * * SUBSYSTEM * * Display Level * * * ******************************************************************************/ SDDAS_SHORT create_data_structure (SDDAS_ULONG data_key, SDDAS_CHAR *exten, SDDAS_USHORT vnum, void **data_ptr) { extern struct general_info ginfo; struct experiment_info *ex; SDDAS_SHORT ret_val; /***********************************************************************/ /* Set a pointer to the structure which holds all information that is */ /* pertinent to the experiment currently being processed. Since */ /* ir_locate_ex() is called by more than one routine, return an error */ /* code that indicates which calling routine resulted in the error. */ /* Since we pass a 0 for the last parameter, the only possible error */ /* is that the requested combo was not found among processed combos. */ /***********************************************************************/ if (!ginfo.called_locate) { ret_val = ir_locate_ex (data_key, exten, vnum, 0); if (ret_val != ALL_OKAY) return (CREATE_DSTR_NOT_FOUND); } ex = ginfo.expt; if (ex->header_format == ORIGINAL_HEADER) ret_val = create_idf_data_structure (data_ptr); else ret_val = create_tensor_data_structure (data_ptr); return (ret_val); }