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PRCallOnceType
==============
Structure for tracking initialization.
Syntax
------
.. code::
#include <prinit.h>
typedef struct PRCallOnceType {
PRIntn initialized;
PRInt32 inProgress;
PRStatus status;
} PRCallOnceType;
Fields
~~~~~~
The structure has these fields:
``initialized``
If not zero, the initialization process has been completed.
``inProgress``
If not zero, the initialization process is currently being executed.
Calling threads that observe this status block until inProgress is
zero.
``status``
An indication of the outcome of the initialization process.
Description
-----------
The client is responsible for initializing the :ref:`PRCallOnceType`
structure to all zeros. This initialization must be accomplished before
any threading issues exist.