tis_lock_global - Locks the DECthreads global mutex.
Standard C Library (libc.so, libc.a)
This routine locks the DECthreads global mutex. The global mutex is recursive. For example, if you 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_lock_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.
Manuals: Guide to DECthreads and Programmer's Guide