One-time execution
Collaboration diagram for One-time execution:

Data Structures

union  globus_thread_once_t
 

Macros

#define GLOBUS_THREAD_ONCE_INIT   { .none = 0 }
 

Functions

int globus_thread_once (globus_thread_once_t *once, void(*init_routine)(void))
 

Detailed Description

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().

Macro Definition Documentation

#define GLOBUS_THREAD_ONCE_INIT   { .none = 0 }

Thread once initializer value.

Function Documentation

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 @a 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 @a once value must be a static value
initialized to GLOBUS_THREAD_ONCE_INIT.
Parameters
onceA pointer to the value used to govern whether the function passed via the init_routine parameter has executed.
init_routineFunction 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.

about globus | globus toolkit | dev.globus

Comments? webmaster@globus.org