tis_unlock_global - Unlocks the DECthreads global mutex.
Standard C Library (libc.so, libc.a)
This routine unlocks the DECthreads global mutex. Because the global mutex is recursive, the unlock occurs when each call to tis_lock_global(3) has been matched by a call to this routine. For example, if your program called tis_lock_global(3) three times, tis_unlock_global(3) unlocks the global mutex when you call it the third time.
For more information about actions taken when threads are present, refer to the pthread_unlock_global_np()(3) description.
If an error condition occurs, this routine returns an integer value indicating the type of error. Possible return values are as follows: Successful completion. The DECthreads global mutex is unlocked or locked by another thread.
Manuals: Guide to DECthreads and Programmer's Guide