Up: Non-POSIX Extensions


34.2.1 Setting Process-wide defaults for thread attributes

The GNU C Library provides non-standard API functions to set and get the default attributes used in the creation of threads in a process.

— Function: int pthread_getattr_default_np (pthread_attr_t *attr)

Preliminary: | MT-Safe | AS-Unsafe lock | AC-Unsafe lock | See POSIX Safety Concepts.

Get the default attribute values and set attr to match. This function returns 0 on success and a non-zero error code on failure.

— Function: int pthread_setattr_default_np (pthread_attr_t *attr)

Preliminary: | MT-Safe | AS-Unsafe heap lock | AC-Unsafe lock mem | See POSIX Safety Concepts.

Set the default attribute values to match the values in attr. The function returns 0 on success and a non-zero error code on failure. The following error codes are defined for this function:

EINVAL
At least one of the values in attr does not qualify as valid for the attributes or the stack address is set in the attribute.
ENOMEM
The system does not have sufficient memory.