85 lines
2.6 KiB
OCaml
85 lines
2.6 KiB
OCaml
(***********************************************************************)
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(* *)
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(* Objective Caml *)
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(* *)
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(* Jerome Vouillon, projet Cristal, INRIA Rocquencourt *)
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(* Objective Caml port by John Malecki and Xavier Leroy *)
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(* *)
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(* Copyright 1996 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed *)
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(* under the terms of the Q Public License version 1.0. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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(*************************** Checkpoints *******************************)
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open Debugcom
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open Primitives
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(*** A type for checkpoints. ***)
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type checkpoint_state =
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C_stopped
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| C_running of int
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(* `c_valid' is true if and only if the corresponding
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* process is connected to the debugger.
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* `c_parent' is the checkpoint whose process is parent
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* of the checkpoint one (`root' if no parent).
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* c_pid = -2 for root pseudo-checkpoint.
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* c_pid = 0 for ghost checkpoints.
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* c_pid = -1 for kill checkpoints.
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*)
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type checkpoint = {
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mutable c_time : int;
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mutable c_pid : int;
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mutable c_fd : io_channel;
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mutable c_valid : bool;
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mutable c_report : report option;
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mutable c_state : checkpoint_state;
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mutable c_parent : checkpoint;
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mutable c_breakpoint_version : int;
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mutable c_breakpoints : (int * int ref) list;
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mutable c_trap_barrier : int
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}
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(*** Pseudo-checkpoint `root'. ***)
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(* --- Parents of all checkpoints which have no parent. *)
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let rec root = {
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c_time = 0;
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c_pid = -2;
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c_fd = std_io;
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c_valid = false;
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c_report = None;
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c_state = C_stopped;
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c_parent = root;
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c_breakpoint_version = 0;
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c_breakpoints = [];
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c_trap_barrier = 0
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}
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(*** Current state ***)
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let checkpoints =
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ref ([] : checkpoint list)
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let current_checkpoint =
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ref root
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let current_time () =
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!current_checkpoint.c_time
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let current_report () =
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!current_checkpoint.c_report
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let current_pc () =
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match current_report () with
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None | Some {rep_type = Exited | Uncaught_exc} -> None
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| Some {rep_program_pointer = pc } -> Some pc
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let current_pc_sp () =
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match current_report () with
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None | Some {rep_type = Exited | Uncaught_exc} -> None
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| Some {rep_program_pointer = pc; rep_stack_pointer = sp } -> Some (pc, sp)
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