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|
(***********************************************************************)
(* *)
(* Objective Caml *)
(* *)
(* Jerome Vouillon, projet Cristal, INRIA Rocquencourt *)
(* Objective Caml port by John Malecki and Xavier Leroy *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the Q Public License version 1.0. *)
(* *)
(***********************************************************************)
(* $Id$ *)
(*************************** Checkpoints *******************************)
open Int64ops
open Debugcom
open Primitives
(*** A type for checkpoints. ***)
type checkpoint_state =
C_stopped
| C_running of int64
(* `c_valid' is true if and only if the corresponding
* process is connected to the debugger.
* `c_parent' is the checkpoint whose process is parent
* of the checkpoint one (`root' if no parent).
* c_pid = -2 for root pseudo-checkpoint.
* c_pid = 0 for ghost checkpoints.
* c_pid = -1 for kill checkpoints.
*)
type checkpoint = {
mutable c_time : int64;
mutable c_pid : int;
mutable c_fd : io_channel;
mutable c_valid : bool;
mutable c_report : report option;
mutable c_state : checkpoint_state;
mutable c_parent : checkpoint;
mutable c_breakpoint_version : int;
mutable c_breakpoints : (int * int ref) list;
mutable c_trap_barrier : int
}
(*** Pseudo-checkpoint `root'. ***)
(* --- Parents of all checkpoints which have no parent. *)
let rec root = {
c_time = _0;
c_pid = -2;
c_fd = std_io;
c_valid = false;
c_report = None;
c_state = C_stopped;
c_parent = root;
c_breakpoint_version = 0;
c_breakpoints = [];
c_trap_barrier = 0
}
(*** Current state ***)
let checkpoints =
ref ([] : checkpoint list)
let current_checkpoint =
ref root
let current_time () =
!current_checkpoint.c_time
let current_report () =
!current_checkpoint.c_report
let current_pc () =
match current_report () with
None | Some {rep_type = Exited | Uncaught_exc} -> None
| Some {rep_program_pointer = pc } -> Some pc
let current_pc_sp () =
match current_report () with
None | Some {rep_type = Exited | Uncaught_exc} -> None
| Some {rep_program_pointer = pc; rep_stack_pointer = sp } -> Some (pc, sp)
|
