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NAME
     Get_Modified - ask whether an entity has been modified

SYNOPSIS
     [file] Get_Modified(in type ID,
                         out boolean modified);

DESCRIPTION
     The Get_Modified request asks whether any tool has  modified
     a  volatile, non-shared (for example, in-memory) representa-
     tion of the persistent state of an entity (such as  a  file)
     with  the intention of eventually making that representation
     persistent.

     Thus, a tool should register  a  dynamic  pattern  for  this
     request  when  it  has modified an entity of possible shared
     interest.

     The ID argument is the identity  of  the  persistent  entity
     being  asked about.  When its type is File, then ID is unset
     (in other words, has a value of (char *)0), and it refers to
     the file or directory named in the message's file attribute.

     The modified argument argument is a Boolean value indicating
     whether  a  volatile,  non-shared  (for  example, in-memory)
     representation of the entity  has  been  modified  with  the
     intention  of  eventually  making  that  representation per-
     sistent.

ERRORS
     The ToolTalk service may return one of the following  errors
     in processing the Get_Modified request:

        TT_ERR_NO_MATCH
              Since no handler could  be  found,  the  entity  in
              question can be assumed not to be modified.

APPLICATION USAGE
     The ttdt_file_join(3), function can be used to register for,
     and transparently process, the Get_Modified request.

     The    Get_Modified    request    can    be    sent     with
     ttdt_file_request(3);  ttdt_Get_Modified(3),  can  send  the
     Get_Modified request and block on the reply.

SEE ALSO
     ttdt_file_join(3), ttdt_file_request(3),
     ttdt_file_request(3), ttdt_Get_Modified(3); Set_Modified
     request.

Партнёры:

Хостинг: