Query: t_free
OS: osf1
Section: 3
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
t_free(3) Library Functions Manual t_free(3)NAMEt_free - Frees a library structureLIBRARYXTI Library (libxti.a)SYNOPSIS#include <xti.h> int t_free( char *ptr, int struct_type) ;STANDARDSInterfaces documented on this reference page conform to industry standards as follows: t_free(): XNS4.0 Refer to the standards(5) reference page for more information about industry standards and associated tags.PARAMETERSThe following table summarizes the relevance of input parameter data before and after t_free() is called: Parameters Before Call After Call --------------------------------------- ptr y n struct_type y n Notes to table: y This is a meaningful parameter. n This is not a meaningful parameter. ptr Points to one of the seven structure types described for structures previously named by the struct_type parameter of the t_alloc() function, listed below. struct_type Specifies the structure type for functions for which memory was previously allocated. This parameter must be one of the symbolic names listed in the following table: Symbolic Name Structure Using Function ------------------------------------------------------------------------- T_BIND struct t_bind t_bind() T_CALL struct t_call t_accept(), t_connect(), t_listen(), t_rcvconnect(), t_snddis() T_OPTMGMT struct t_optmgmt t_optmgmt() T_DIS struct t_discon t_rcvdis() T_UNITDATA struct t_unitdata t_rcvudata(), t_sndudata() T_UDERROR struct t_uderr t_rcvuderr() T_INFO struct t_info t_info() Any structure symbolic name listed in the preceding table may be used as an argument to deallocate previously reserved memory. Each of the structures, except t_info, contains at least one member of type struct netbuf structure, which is defined in the xti.h include file. This function checks all members of a netbuf structure and deallocates those buffers. When a netbuf structure buf parameter is a null pointer, no memory is deallocated. After all buffers are deallocated, this function frees all memory referenced by the ptr parameter.VALID STATESThe t_free() function can be called in all transport provider states.DESCRIPTIONThe t_free() function is an XTI general utility function used to deallocate memory buffers previously allocated with the t_alloc() func- tion. When executed, t_free() deallocates memory for the named structure and for any buffers referenced by the named structure. When t_free() is executed, undefined results are obtained when structure pointers or buffer pointers point to memory blocks not previously allo- cated with the t_alloc() function.RETURN VALUEUpon successful completion, a value of 0 (zero) is returned. Otherwise, a value of -1 is returned and t_errno is set to indicate the error.ERRORSIf the t_free() function fails, t_errno may be set to the following value: [TSYSERR] A system error occurred during execution of this function. [TNOSTRUCTURE] Unsupported struct_type requested. [TPROTO] This error indicates that a communication problem has been detected between XTI and the transport provider for which there is no other suitable XTI(t_errno).RELATED INFORMATIONFunctions: t_alloc(3) delim off t_free(3)