Source code
Revision control
Copy as Markdown
Other Tools
# 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.