src/Pure/ML-Systems/polyml_common.ML
author wenzelm
Wed, 22 Sep 2010 13:47:48 +0200
changeset 39585 00be8711082f
parent 36876 1abc27d6c362
child 39616 8052101883c3
permissions -rw-r--r--
main Isabelle_Process via Isabelle_System.Managed_Process; simplified init message: no pid; misc tuning and simplification;
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(*  Title:      Pure/ML-Systems/polyml_common.ML
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Compatibility file for Poly/ML -- common part for 5.x.
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*)
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exception Interrupt = SML90.Interrupt;
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use "General/exn.ML";
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if List.exists (fn s => s = "SingleAssignment") (PolyML.Compiler.structureNames ())
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then ()
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else use "ML-Systems/single_assignment_polyml.ML";
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use "ML-Systems/multithreading.ML";
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use "ML-Systems/time_limit.ML";
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use "ML-Systems/timing.ML";
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use "ML-Systems/bash.ML";
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use "ML-Systems/ml_pretty.ML";
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use "ML-Systems/use_context.ML";
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(** ML system and platform related **)
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val forget_structure = PolyML.Compiler.forgetStructure;
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val _ = PolyML.Compiler.forgetValue "isSome";
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val _ = PolyML.Compiler.forgetValue "getOpt";
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val _ = PolyML.Compiler.forgetValue "valOf";
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val _ = PolyML.Compiler.forgetValue "foldl";
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val _ = PolyML.Compiler.forgetValue "foldr";
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val _ = PolyML.Compiler.forgetValue "print";
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val _ = PolyML.Compiler.forgetValue "ref";
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val _ = PolyML.Compiler.forgetType "ref";
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(* Compiler options *)
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val ml_system_fix_ints = false;
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PolyML.Compiler.printInAlphabeticalOrder := false;
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PolyML.Compiler.maxInlineSize := 80;
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(* old Poly/ML emulation *)
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fun quit () = exit 0;
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(* restore old-style character / string functions *)
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val ord = SML90.ord;
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val chr = SML90.chr;
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val explode = SML90.explode;
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val implode = SML90.implode;
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(* prompts *)
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fun ml_prompts p1 p2 = (PolyML.Compiler.prompt1 := p1; PolyML.Compiler.prompt2 := p2);
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(* toplevel printing *)
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local
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  val depth = Unsynchronized.ref 10;
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in
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  fun get_print_depth () = ! depth;
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  fun print_depth n = (depth := n; PolyML.print_depth n);
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end;
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val error_depth = PolyML.error_depth;
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val ml_make_string = "PolyML.makestring";
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(** interrupts **)
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local
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val sig_int = 2;
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val default_handler = Signal.SIG_HANDLE (fn _ => Process.interruptConsoleProcesses ());
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val _ = Signal.signal (sig_int, default_handler);
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val _ = PolyML.onEntry (fn () => (Signal.signal (sig_int, default_handler); ()));
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fun change_signal new_handler f x =
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  let
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    (*RACE wrt. other signals!*)
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    val old_handler = Signal.signal (sig_int, new_handler);
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    val result = Exn.capture (f old_handler) x;
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    val _ = Signal.signal (sig_int, old_handler);
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  in Exn.release result end;
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in
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fun interruptible f = change_signal default_handler (fn _ => f);
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fun uninterruptible f =
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  change_signal Signal.SIG_IGN
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    (fn old_handler => f (fn g => change_signal old_handler (fn _ => g)));
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end;
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(** OS related **)
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(* current directory *)
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val cd = OS.FileSys.chDir;
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val pwd = OS.FileSys.getDir;
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(* getenv *)
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fun getenv var =
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  (case OS.Process.getEnv var of
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    NONE => ""
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  | SOME txt => txt);
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(** Runtime system **)
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val exception_trace = PolyML.exception_trace;
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val timing = PolyML.timing;
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val profiling = PolyML.profiling;
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fun profile 0 f x = f x
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  | profile n f x =
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      let
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        val _ = RunCall.run_call1 RuntimeCalls.POLY_SYS_profiler n;
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        val res = Exn.capture f x;
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        val _ = RunCall.run_call1 RuntimeCalls.POLY_SYS_profiler 0;
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      in Exn.release res end;
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