pthread_condattr_create(3) — Subroutines
Digital
NAME
pthread_condattr_create − Creates a condition variable attributes object that is used to specify the attributes of condition variables when they are created.
SYNOPSIS
#include <pthread.h>
int pthread_condattr_create(
pthread_condattr_t ∗attr );
PARAMETERS
attrCondition variable attributes object that is created.
DESCRIPTION
This routine creates a condition variable attributes object that is used to specify the attributes of condition variables when they are created. The condition variable attributes object is initialized with the default value for all of the attributes defined by a given implementation.
When a condition variable attributes object is used to create a condition variable, the values of the individual attributes determine the characteristics of the new object. Attributes objects act like additional parameters to object creation. Changing individual attributes does not affect objects that were previously created using the attributes object.
RETURN VALUES
The created condition variable attributes object is returned to the attr parameter.
If an error condition occurs, this routine returns −1 and sets errno to the corresponding error value. Possible return values are as follows:
| Return | Error | Description |
| 0 | Successful completion. | |
| −1 | [ENOMEM] | Insufficient memory exists to create the condition variable attributes object. |