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Diffstat (limited to 'lib/backtrace.ml')
-rw-r--r-- | lib/backtrace.ml | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/lib/backtrace.ml b/lib/backtrace.ml deleted file mode 100644 index b3b8bdea..00000000 --- a/lib/backtrace.ml +++ /dev/null @@ -1,116 +0,0 @@ -(***********************************************************************) -(* v * The Coq Proof Assistant / The Coq Development Team *) -(* <O___,, * INRIA-Rocquencourt & LRI-CNRS-Orsay *) -(* \VV/ *************************************************************) -(* // * This file is distributed under the terms of the *) -(* * GNU Lesser General Public License Version 2.1 *) -(***********************************************************************) - -type raw_frame = -| Known_location of bool (* is_raise *) - * string (* filename *) - * int (* line number *) - * int (* start char *) - * int (* end char *) -| Unknown_location of bool (*is_raise*) - -type location = { - loc_filename : string; - loc_line : int; - loc_start : int; - loc_end : int; -} - -type frame = { frame_location : location option; frame_raised : bool; } - -external get_exception_backtrace: unit -> raw_frame array option - = "caml_get_exception_backtrace" - -type t = raw_frame array list -(** List of partial raw stack frames, in reverse order *) - -let empty = [] - -let of_raw = function -| Unknown_location r -> - { frame_location = None; frame_raised = r; } -| Known_location (r, file, line, st, en) -> - let loc = { - loc_filename = file; - loc_line = line; - loc_start = st; - loc_end = en; - } in - { frame_location = Some loc; frame_raised = r; } - -let rec repr_aux accu = function -| [] -> accu -| fragment :: stack -> - let len = Array.length fragment in - let rec append accu i = - if i = len then accu - else append (of_raw fragment.(i) :: accu) (succ i) - in - repr_aux (append accu 0) stack - -let repr bt = repr_aux [] (List.rev bt) - -let push stack = match get_exception_backtrace () with -| None -> [] -| Some frames -> frames :: stack - -(** Utilities *) - -let print_frame frame = - let raise = if frame.frame_raised then "raise" else "frame" in - match frame.frame_location with - | None -> Printf.sprintf "%s @ unknown" raise - | Some loc -> - Printf.sprintf "%s @ file \"%s\", line %d, characters %d-%d" - raise loc.loc_filename loc.loc_line loc.loc_start loc.loc_end - -(** Exception manipulation *) - -let backtrace : t Exninfo.t = Exninfo.make () - -let is_recording = ref false - -let record_backtrace b = - let () = Printexc.record_backtrace b in - is_recording := b - -let get_backtrace e = - Exninfo.get e backtrace - -let add_backtrace e = - if !is_recording then - (** This must be the first function call, otherwise the stack may be - destroyed *) - let current = get_exception_backtrace () in - let info = Exninfo.info e in - begin match current with - | None -> (e, info) - | Some fragment -> - let bt = match get_backtrace info with - | None -> [] - | Some bt -> bt - in - let bt = fragment :: bt in - (e, Exninfo.add info backtrace bt) - end - else - let info = Exninfo.info e in - (e, info) - -let app_backtrace ~src ~dst = - if !is_recording then - match get_backtrace src with - | None -> dst - | Some bt -> - match get_backtrace dst with - | None -> - Exninfo.add dst backtrace bt - | Some nbt -> - let bt = bt @ nbt in - Exninfo.add dst backtrace bt - else dst |