NAME

       globus_module.h - Reference Counting Module Activation and Deactivation.

SYNOPSIS

       #include 'globus_error_generic.h'
       #include <stdio.h>

   Data Structures
       struct globus_module_descriptor_s
           Module Descriptor.

   Typedefs
       typedef int(* globus_module_deactivate_proxy_cb_t) (globus_module_descriptor_t
           *module_descriptor, void *user_arg)

   Functions
       int globus_module_activate (globus_module_descriptor_t *module_descriptor)
           Activate a module.
       int globus_module_activate_array (globus_module_descriptor_t *modules[],
           globus_module_descriptor_t **failed_module)
           Activate a group of modules.
       int globus_module_deactivate (globus_module_descriptor_t *module_descriptor)
           Deactivate a module.
       int globus_module_activate_proxy (globus_module_descriptor_t *module_descriptor,
           globus_module_deactivate_proxy_cb_t deactivate_cb, void *user_arg)
       void globus_module_setenv (const char *name, const char *value)
       char * globus_module_getenv (const char *name)
       void * globus_module_get_module_pointer (globus_module_descriptor_t *)
       int globus_module_get_version (globus_module_descriptor_t *module_descriptor,
           globus_version_t *version)
       void globus_module_print_version (globus_module_descriptor_t *module_descriptor, FILE
           *stream, globus_bool_t verbose)
       void globus_module_print_activated_versions (FILE *stream, globus_bool_t verbose)
       void globus_version_print (const char *name, const globus_version_t *version, FILE
           *stream, globus_bool_t verbose)

Detailed Description

       Reference Counting Module Activation and Deactivation.

Typedef Documentation

   typedef int(* globus_module_deactivate_proxy_cb_t) (globus_module_descriptor_t
       *module_descriptor, void *user_arg)
       module must be deactivated in this call with module_descriptor->deactivation_func(); (be
       sure module_descriptor->deactivation_func is !NULL)

Function Documentation

   int globus_module_activate_proxy (globus_module_descriptor_t * module_descriptor,
       globus_module_deactivate_proxy_cb_t deactivate_cb, void * user_arg)
       this call registers a callback to be called to handle deactivation when
       globus_module_deactivate() or globus_module_deactivate_all() is called

       The callback is only respected for the first call to activate this module. The purpose of
       these proxy calls is to allow 'private' module descriptors that are activated by some
       other user function, but may still be affected by deactivate_all().

   void* globus_module_get_module_pointer (globus_module_descriptor_t *)
       Get a module pointer

   int globus_module_get_version (globus_module_descriptor_t * module_descriptor,
       globus_version_t * version)
       get version associated with module

       This function copies the version structure associated with the module into 'version'.

       Parameters:
           module_descriptor pointer to a module descriptor (module does NOT need to be
           activated)
           version pointer to storage for a globus_version_t. The version will be copied into
           this

       Returns:

           • GLOBUS_SUCCESS

           • GLOBUS_FAILURE if there is no version associated with this module (module->version
             == null)

   char* globus_module_getenv (const char * name)
       Get the value of an environment variable

   void globus_module_print_activated_versions (FILE * stream, globus_bool_t verbose)
       print all activated modules' versions

       This function prints all activated modules' version info using the standard form provided
       by globus_version_print

       Parameters:
           stream stream to print on (stdout, stderr, etc)
           verbose If GLOBUS_TRUE, then all available version info is printed (ex: globus_module:
           1.1 (1013708618-5)) else, only the major.minor is printed (ex: globus_module: 1.1)

       Returns:

           • void

   void globus_module_print_version (globus_module_descriptor_t * module_descriptor, FILE *
       stream, globus_bool_t verbose)
       print module's version

       This function prints a modules version info using the standard form provided by
       globus_version_print

       Parameters:
           module_descriptor pointer to a module descriptor (module does NOT need to be
           activated)
           stream stream to print on (stdout, stderr, etc)
           verbose If GLOBUS_TRUE, then all available version info is printed (ex: globus_module:
           1.1 (1013708618-5)) else, only the major.minor is printed (ex: globus_module: 1.1)

       Returns:

           • void

   void globus_module_setenv (const char * name, const char * value)
       set an environment variable

   void globus_version_print (const char * name, const globus_version_t * version, FILE * stream,
       globus_bool_t verbose)
       print version structure

       This function provides a stand way of printing version information The version is printed
       to stream with the following form: name: major.minor if verbose = false name:
       major.minor.timestamp-branch_id if verbose = true

       In either case, if name is NULL, then only the numerical version will be printed.

       Parameters:
           name A string to prefix the version. May be NULL
           version The version structure containing the info to print. (May be NULL, although
           pointless to do so)
           stream stream to print on (stdout, stderr, etc)
           verbose If GLOBUS_TRUE, then all available version info is printed (ex: globus_module:
           1.1 (1013708618-5)) else, only the major.minor is printed (ex: globus_module: 1.1)

       Returns:

           • void

Author

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