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t_free (3)
  • >> t_free (3) ( Solaris man: Библиотечные вызовы )
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    NAME

    t_free - free a library structure
     
    

    SYNOPSIS

    #include <xti.h>
    
    
    
    int t_free(void *ptr, int struct_type);
    

     

    DESCRIPTION

    This routine is part of the XTI interfaces which evolved from the TLI interfaces. XTI represents the future evolution of these interfaces. However, TLI interfaces are supported for compatibility. When using a TLI routine that has the same name as an XTI routine, the tiuser.h header file must be used. Refer to the TLI COMPATIBILITY section for a description of differences between the two interfaces.

    The t_free() function frees memory previously allocated by t_alloc(3NSL). This function will free memory for the specified structure, and will also free memory for buffers referenced by the structure.

    The argument ptr points to one of the seven structure types described for t_alloc(3NSL), and struct_type identifies the type of that structure which must be one of the following:

    T_BIND      struct      t_bind
    T_CALL      struct      t_call
    T_OPTMGMT   struct      t_optmgmt
    T_DIS       struct      t_discon
    T_UNITDATA  struct      t_unitdata
    T_UDERROR   struct      t_uderr
    T_INFO      struct      t_info
    

    where each of these structures is used as an argument to one or more transport functions.

    The function t_free() will check the addr, opt and udata fields of the given structure, as appropriate, and free the buffers pointed to by the buf field of the netbuf structure. If buf is a null pointer, t_free() will not attempt to free memory. After all buffers are freed, t_free() will free the memory associated with the structure pointed to by ptr.

    Undefined results will occur if ptr or any of the buf pointers points to a block of memory that was not previously allocated by t_alloc(3NSL).  

    RETURN VALUES

    Upon successful completion, a value of 0 is returned. Otherwise, a value of -1 is returned and t_errno is set to indicate an error.  

    VALID STATES

    ALL - apart from T_UNINIT.  

    ERRORS

    On failure, t_errno is set to the following:

    TNOSTRUCTYPE

    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 error (t_errno).

    TSYSERR

    A system error has occurred during execution of this function.

     

    TLI COMPATIBILITY

    The XTI and TLI interface definitions have common names but use different header files. This, and other semantic differences between the two interfaces are described in the subsections below.  

    Interface Header

    The XTI interfaces use the header file, xti.h. TLI interfaces should not use this header. They should use the header:

    #include <tiuser.h> 
    

     

    Error Description Values

    The t_errno value that can be set by the XTI interface and cannot be set by the TLI interface is:

    TPROTO

     

    ATTRIBUTES

    See attributes(5) for descriptions of the following attributes:

    ATTRIBUTE TYPEATTRIBUTE VALUE

    MT LevelSafe

     

    SEE ALSO

    t_alloc(3NSL), attributes(5)


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    VALID STATES
    ERRORS
    TLI COMPATIBILITY
    Interface Header
    Error Description Values
    ATTRIBUTES
    SEE ALSO


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