Restoring Default Attribute Values
Use the following functions to restore the default value, if any, for the corresponding attribute:
*resetConcurrencyPolicy()
*resetContentionScope()
*resetInheritancePolicy()
*resetPriority()
*resetProcessScopePriority()
*resetSchedulingPolicy()
*resetStackCommitSize()
*resetStackReserveSize()
*resetStartPolicy()
*resetSystemScopePriority()
*resetTimeSliceQuantum()
*resetUserStack()
These functions always succeed. If the target attribute is not supported, these functions clear any previous setting, and the appropriate default value is supplied by the underlying API.