globus_thread_once - One-time execution

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globus_common                                     Version 18.14                            globus_thread_once(3)

       One-time execution.

       The globus_thread_once_t provides a way for applications and libraries to execute some code exactly one
       time, independent of the number of threads which attempt to execute it. To use this, statically
       initialize a globus_thread_once_t control with the value GLOBUS_THREAD_ONCE_INIT, and pass a pointer to a
       function to execute once, along with the control, to globus_thread_once().

intglobus_thread_once(globus_thread_once_t*once,void(*)(void)init_routine)
       Execute a function one time. The globus_thread_once() function will execute the function pointed to by
       its init_routine parameter one time for each unique globus_thread_once_t object passed to it, independent
       of the number of threads calling it. The once value must be a static value initialized to
       GLOBUS_THREAD_ONCE_INIT.

       Parametersonce A pointer to the value used to govern whether the function passed via the init_routine parameter
           has executed.
           init_routine Function to execute one time. It is called with no parameters.

       Returns
           On success, globus_thread_once() guarantees that the function pointed to by init_routine has run, and
           that subsequent calls to globus_thread_once() with the same value of once will not execute that
           function, and returns GLOBUS_SUCCESS. If an error occurs, globus_thread_once() returns an
           implementation-specific non-zero error value.

       globus_thread_once - One-time execution

        - One-time execution.

DataStructures
       union globus_thread_once_t
           Thread once structure.

   Macros
       #define GLOBUS_THREAD_ONCE_INIT
           Thread once initializer value.

   Functions
       int globus_thread_once (globus_thread_once_t *once, void(*init_routine)(void))
           Execute a function one time.