SWI-Prolog -- sig

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Predicate sig_unblock/1

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Documentation
- Reference manual
  - Multithreaded applications
    - Thread communication
      - Signalling threads
        
        thread_signal/2
        
        sig_pending/1
        
        sig_remove/2
        
        sig_block/1
        
        sig_unblock/1
        
        sig_atomic/1
- Packages

Availability:built-in

[det]sig_unblock(:Pattern)

Remove any effect of sig_block/1 for patterns that are more specific (see subsumes_term/2). If any patterns are removed, reschedule blocked signals. Note that sig_unblock/1 normally causes all unblocked signals to be executed immediately.