NAME

       globus_callout - Globus Callout API

        - Globus Callout API.

SYNOPSIS

   Modules
       Activation
           Callback API Activation.
       Callout Handle Operations
           Manage a Globus Callout Handle structure.
       Callout Configuration
           Register callouts.
       Callout Invocation
           Invoke callouts.
       Callout Constants
           Constants.

Detailed Description

       Globus Callout API.

       This API is intended to ease integration of configurable callouts into the Grid Community
       Toolkit and to provide a platform independent way of dealing with runtime loadable
       functions. It (hopefully) achieves this goal by providing the following functionality:

       • It provides a function for reading callout configuration files. Files are assumed to
         have the following format:

         • Anything after a # is assumed to be a comment

         • Blanks lines are ignored

         • Lines specifying callouts have the format

              abstract type           library         symbol

         • where abstract type denotes the type of callout, e.g. globus_gram_jobmanager_authz,
           library denotes the library the callout can be found in and symbol denotes the
           function name of the callout.

       • It provides a API function for registering callouts

       • All callouts are assumed to have the function signature globus_result_t
         callout_func(va_list ap)

       • It provides a function for calling a callout given an abstract type. If multiple
         callouts are defined for the same abstract type then all callouts for the abstract type
         will be called. Implementers should not rely on any correlation between the order of
         configuration and the order of invocation of callouts of the same abstract type.

       Any program that uses Globus Callout functions must include the globus_callout.h header

       Function Categories

       • Activation

       • Callout Handle Operations

       • Callout Configuration

       • Callout Invocation

       • Callout Constants

Author

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