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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 "@(#) init_idfs.c 1.34 05/08/19 SwRI" #include #include "gen_defs.h" #include "libbase_idfs.h" struct general_info ginfo; struct def_oper IDF_OPER[10]; struct def_combine_oper COMBINE_OPER[10]; void *ir_base_units, *ir_base_swp, *ir_tmp_space; SDDAS_CHAR ir_reset_sensors, ir_block_adv, ir_inside_reset_exp; SDDAS_CHAR ir_swap_data; SDDAS_FLOAT ir_conv_fill[IR_FILL_SZ], *ir_units_data, *ir_swp_base_units; SDDAS_FLOAT *ir_swp_low, *ir_swp_high; SDDAS_UINT ir_units_bytes, ir_swp_bytes, ir_tmp_bytes; SDDAS_LONG InitIdfsEntry; /******************************************************************************* * * * INIT_IDFS SUBROUTINE * * * * DESCRIPTION * * This routine is called once at the beginning of a program in order to * * initialize some of the information that is pertinent to the processing of * * IDFS information. The operations enabled for tables defined in the VIDF * * document must be initialized and the number of open file descriptors is * * set to the maximum allowed for a single process. * * * * INPUT VARIABLES * * None * * * * USAGE * * init_idfs () * * * * NECESSARY SUBPROGRAMS * * ir_init_struct () initializes elements in the global data * * structure used by the generic routines * * ir_oper_asgn () sets up the array of pointers to the * * routines that perform the arithmetic * * operations defined for the VIDF tables * * ir_set_fd_limit () sets the limit on the number of open file * * descriptors per processes to the maximum * * malloc() allocates memory * * * * EXTERNAL VARIABLES * * SDDAS_UINT ir_units_bytes the number of bytes allocated to hold the * * values from convert_to_units() * * SDDAS_UINT ir_swp_bytes the number of bytes allocated to hold the * * sample sequence values * * SDDAS_UINT ir_tmp_bytes number of bytes allocated for scratch space * * SDDAS_LONG InitIdfsEntry variable used to safeguard against multiple * * entries for this routine * * void *ir_base_units pointer to the space allocated to hold the * * values from the call to convert_to_units * * for each data level requested * * void *ir_base_swp pointer to the space allocated to hold the * * sample sequence values * * void *ir_tmp_space scratch space for various uses * * SDDAS_CHAR ir_block_adv flag indicating if time advancement should * * be blocked * * SDDAS_CHAR ir_inside_reset_exp flag indicating in RESET_EXPERIMENT_INFO * * module (needed for FILE_OPEN logic) * * SDDAS_CHAR ir_swap_data flag that is used to determine when the data* * matrix is to be converted to host byte order* * * * INTERNAL VARIABLES * * void *tmp_ptr pointer which holds address passed back by * * the call to the MALLOC routine * * * * SUBSYSTEM * * Display Level * * * ******************************************************************************/ void init_idfs (void) { void *tmp_ptr; /*************************************************************************/ /* Try to safeguard against this routine being called more than once. */ /*************************************************************************/ if (InitIdfsEntry == 1234567890) return; /*************************************************************************/ /* Initialize elements. */ /*************************************************************************/ ir_init_struct (); ir_oper_asgn (); ir_base_units = NO_MEMORY; ir_base_swp = NO_MEMORY; ir_tmp_space = NO_MEMORY; ir_units_bytes = 0; ir_swp_bytes = 0; ir_tmp_bytes = 1024; ir_block_adv = 0; ir_swap_data = 0; ir_inside_reset_exp = 0; ir_set_fd_limit (); /***********************************************************************/ /* Allocate temporary scratch space to be used. If the malloc fails, */ /* simply set number of bytes so other modules will allocate. This */ /* was done so that the calling sequence would not have to change. */ /***********************************************************************/ if ((tmp_ptr = malloc (ir_tmp_bytes)) == NO_MEMORY) { ir_tmp_space = NO_MEMORY; ir_tmp_bytes = 0; } ir_tmp_space = tmp_ptr; InitIdfsEntry = 1234567890; }