c('PL_unify_thread_id')

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PL_unify_thread_id()

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Documentation
- Reference manual
  - Multithreaded applications
    - Multithreaded mixed C and Prolog applications
      - A Prolog thread for each native thread (one-to-one)
        
        PL_thread_self()
        
        PL_unify_thread_id()
        
        PL_thread_attach_engine()
        
        PL_thread_destroy_engine()
        
        PL_thread_at_exit()
- Packages

Availability:C-language interface function

int PL_unify_thread_id(term_t t, int i)

Unify t with the Prolog thread identifier for thread i. Thread identifiers are normally returned from PL_thread_self(). Returns -1 if the thread does not exist or the unification fails.