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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 "@(#) create_spin_data.c 1.1 05/08/19 SwRI" #include #include "ret_codes.h" #include "gen_defs.h" #include "libbase_idfs.h" /******************************************************************************* * * * IR_CREATE_SPIN_DATA_STRUCTURE SUBROUTINE * * * * DESCRIPTION * * This routine will create another data structure so that the sweep can be * * read from the parent data source to see if it belongs in the current spin. * * * * INPUT VARIABLES * * SDDAS_ULONG data_key key which uniquely identifies the data set * * being processed * * SDDAS_CHAR *exten the filename extension for the data to be used * * struct start_spin_info *sptr a pointer to the structure which holds all * * spin information for the sensor being processed * * * * USAGE * * x = ir_create_spin_data_structure (data_key, exten, &sptr) * * * * NECESSARY SUBPROGRAMS * * ir_check_idf_data_memory () makes sure that all allocated arrays in the * * idf_data structure are of sufficient size * * create_idf_data_structure() creates the idf_data structure that will * * hold data from the sensor from this IDFS source * * sizeof () the size of the specified object in bytes * * realloc() reallocates previously allocated memory * * * * EXTERNAL VARIABLES * * None * * * * INTERNAL VARIABLES * * reg SDDAS_LONG loop_index looping variable * * SDDAS_SHORT rval value returned by called module * * size_t bytes the number of bytes to allocate * * void *tmp_ptr pointer which holds address passed back by the * * call to the MALLOC routine * * void *idf_data_ptr ptr to the memory location for the structure * * that holds returned data values * * * * SUBSYSTEM * * Display Level * * * ******************************************************************************/ SDDAS_SHORT ir_create_spin_data_structure (SDDAS_ULONG data_key, SDDAS_CHAR *exten, struct start_spin_info *sptr) { register SDDAS_LONG loop_index; SDDAS_SHORT rval; /* Leave variables as is */ size_t bytes; void *tmp_ptr, *idf_data_ptr; /**************************************************************************/ /* Reallocate space to hold the addresses of all allocated data */ /* structures. Keep adding 10 pointers. */ /**************************************************************************/ if (sptr->data_index == sptr->num_data_ptr) { sptr->num_data_ptr += 10; bytes = sptr->num_data_ptr * sizeof (void *); if ((tmp_ptr = realloc (sptr->data_ptr, bytes)) == NO_MEMORY) return (READ_SPIN_ALL_REALLOC); sptr->data_ptr = (void **) tmp_ptr; /**********************************************************************/ /* Initialize the new data pointers. */ /**********************************************************************/ for (loop_index = sptr->num_data_ptr - 10; loop_index < sptr->num_data_ptr; ++loop_index) *(sptr->data_ptr + loop_index) = NO_MEMORY; } /************************************************************************/ /* Create an instance of the data structure, so that data and timing */ /* values can be preserved when the start/stop of spin is found. */ /************************************************************************/ if (*(sptr->data_ptr + sptr->data_index) == NO_MEMORY) { rval = create_idf_data_structure (&idf_data_ptr); if (rval != ALL_OKAY) return (rval); rval = ir_check_idf_data_memory (data_key, exten, sptr->spin_vnum, idf_data_ptr); if (rval != ALL_OKAY) return (rval); *(sptr->data_ptr + sptr->data_index) = idf_data_ptr; } return (ALL_OKAY); }