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12.4 The Foreign Include File
All Application Manual Name SummaryHelp

  • Documentation
    • Reference manual
      • Foreign Language Interface
        • The Foreign Include File
          • Argument Passing and Control
          • Atoms and functors
          • Analysing Terms via the Foreign Interface
          • Constructing Terms
          • Unifying data
          • Convenient functions to generate Prolog exceptions
          • Foreign language wrapper support functions
          • Serializing and deserializing Prolog terms
          • BLOBS: Using atoms to store arbitrary binary data
          • Exchanging GMP numbers
          • Calling Prolog from C
          • Discarding Data
          • String buffering
          • Foreign Code and Modules
          • Prolog exceptions in foreign code
          • Catching Signals (Software Interrupts)
          • Miscellaneous
          • Errors and warnings
          • Environment Control from Foreign Code
          • Querying Prolog
            • PL_query()
          • Registering Foreign Predicates
          • Foreign Code Hooks
          • Storing foreign data
          • Embedding SWI-Prolog in other applications
    • Packages
n the requested action. The actions are listed below:
PL_ACTION_TRACE
Start Prolog tracer (trace/0). Requires no arguments.
PL_ACTION_DEBUG
Switch on Prolog debug mode (debug/0). Requires no arguments.
PL_ACTION_BACKTRACE
Print backtrace on current output stream. The argument (an int) is the number of frames printed.
PL_ACTION_HALT
Halt Prolog execution. This action should be called rather than Unix exit() to give Prolog the opportunity to clean up. This call does not return. The argument (an int) is the exit code. See halt/1.
PL_ACTION_ABORT
Generate a Prolog abort (abort/0). This call does not return. Requires no arguments.
PL_ACTION_BREAK
Create a standard Prolog break environment (break/0). Returns after the user types the end-of-file character. Requires no arguments.
PL_ACTION_GUIAPP
Windows: Used to indicate to the kernel that the application is a GUI application if the argument is not 0, and a console application if the argument is 0. If a fatal error occurs, the system uses a windows messagebox to report this on a GUI application, and otherwise simply prints the error and exits.
PL_ACTION_TRADITIONAL
Same effect as using --traditional. Must be called before PL_initialise().
PL_ACTION_WRITE
ClioPatria (version V3.1.1-42-gd6a756b-DIRTY)