tis_key_delete - Deletes the specified thread-specific data key.
Standard C Library (libc.so, libc.a)
Thread-specific data key to be deleted.
This routine deletes a thread-specific data key key previously returned by a call to the tis_key_create(3) routine. The data values associated with key need not be NULL at the time this routine is called. The application must free any application storage or perform any cleanup actions for data structures related to the the deleted key or associated data. This cleanup can be done before or after this routine is called.
Attempting to use the thread-specific data key key after calling this routine results in unpredictable behavior.
No destructor functions are invoked by this routine. Any destructor functions that may have been associated with key will no longer be called upon thread exit.
This routine can be called from within destructor functions.
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 value for key is invalid.
Functions: tis_getspecific(3), tis_key_create(3), tis_setspecific(3)
Manuals: Guide to DECthreads and Programmer's Guide