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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().
#define GLOBUS_THREAD_ONCE_INIT { .none = 0 } |
Thread once initializer value.
int globus_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.
once | 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. |