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open! Core
include Data_intf
let enable_invariants = false
module Location = struct
module T = struct
type t =
| Allocation_site
| Toplevel
| Dummy
| Function of
{ defname : string
; full_string : string
; loc_in_file : string
}
[@@deriving sexp, bin_io, compare, hash]
end
include T
include Comparable.Make_binable (T)
include Hashable.Make (T)
let create ~filename ~line ~start_char ~end_char ~defname =
let loc_in_file = sprintf "(%s:%d:%d-%d)" filename line start_char end_char in
let full_string = sprintf "%s %s" defname loc_in_file in
Function { defname; loc_in_file; full_string }
;;
let allocation_site = Allocation_site
let toplevel = Toplevel
let dummy = Dummy
let is_allocation_site = function
| Allocation_site -> true
| _ -> false
;;
let is_toplevel = function
| Toplevel -> true
| _ -> false
;;
let is_dummy = function
| Dummy -> true
| _ -> false
;;
let is_special = function
| Allocation_site | Toplevel | Dummy -> true
| Function _ -> false
;;
let allocation_site_string = "(allocation site)"
let toplevel_string = "(toplevel)"
let dummy_string = "(no location)"
let defname = function
| Function { defname; _ } -> defname
| Allocation_site -> allocation_site_string
| Toplevel -> toplevel_string
| Dummy -> dummy_string
;;
let loc_in_file = function
| Function { loc_in_file; _ } -> loc_in_file
| Allocation_site -> allocation_site_string
| Toplevel -> toplevel_string
| Dummy -> dummy_string
;;
let full_name = function
| Function { full_string; _ } -> full_string
| Allocation_site -> allocation_site_string
| Toplevel -> toplevel_string
| Dummy -> dummy_string
;;
module Debug = struct
type nonrec t = t
let sexp_of_t t = Sexp.Atom (full_name t)
end
end
module Backtrace = struct
module T = struct
type t = Location.t list [@@deriving sexp, bin_io, compare, hash]
end
include T
include Comparable.Make_binable (T)
let is_trivial = function
| [] -> true
| [ loc ] -> Location.is_special loc
| _ -> false
;;
module Debug = struct
type t = Location.Debug.t list [@@deriving sexp_of]
end
module Reversed : sig
type t [@@deriving sexp, bin_io, compare, hash]
include Comparable.S_binable with type t := t
val nil : t
val cons : Location.t -> t -> t
val append : t -> t -> t
val of_forward : Location.t list -> t
val of_reversed_list : Location.t list -> t
val elements : t -> Location.t list
val head_and_tail : t -> (Location.t * t) option
val hd : t -> Location.t option
val tl : t -> t option
module Debug : sig
type nonrec t = t [@@deriving sexp_of]
end
end = struct
module T = T
include T
include Comparable.Make_binable (T)
let nil = []
let cons loc t = loc :: t
let append t1 t2 = t1 @ t2
let of_forward t = List.rev t
let of_reversed_list t = t
let elements t = t
let hd = function
| [] -> None
| loc :: _ -> Some loc
;;
let tl = function
| [] -> None
| _ :: rest -> Some rest
;;
let head_and_tail = function
| [] -> None
| loc :: t -> Some (loc, t)
;;
module Debug = struct
type t = Location.Debug.t list [@@deriving sexp_of]
end
end
let of_reversed (t : Reversed.t) = List.rev (Reversed.elements t)
end
module Graph = struct
type t =
{ points : (Time_ns.Span.t * Byte_units.Stable.V2.t) list
; max_x : Time_ns.Span.t
; max_y : Byte_units.Stable.V2.t
}
[@@deriving sexp, bin_io, fields]
let create points =
let max_x, max_y =
List.fold_left
points
~init:(Time_ns.Span.zero, Byte_units.zero)
~f:(fun (_, max_y) (x, y) -> x, Byte_units.max max_y y)
in
{ points; max_x; max_y }
;;
end
module Entry = struct
type t =
{ allocations : Byte_units.Stable.V2.t
; direct_allocations : Byte_units.Stable.V2.t
; allocations_string : string
; percentage_string : string
; is_heavy : bool
}
[@@deriving sexp, bin_io, fields]
let empty =
let allocations = Byte_units.zero in
let direct_allocations = Byte_units.zero in
let is_heavy = false in
let allocations_string = Byte_units.Short.to_string allocations in
let percentage_string = "0%" in
{ allocations; direct_allocations; is_heavy; allocations_string; percentage_string }
;;
let create ~total_allocations_in_trie ~allocations ~direct_allocations ~is_heavy =
let allocations_string = Byte_units.Short.to_string allocations in
let percentage = 100. *. Byte_units.(allocations // total_allocations_in_trie) in
let percentage_string = Format.sprintf "%.1f%%" percentage in
{ allocations; direct_allocations; is_heavy; allocations_string; percentage_string }
;;
end
module Orientation = struct
type t =
| Callers
| Callees
[@@deriving sexp, equal]
let flip = function
| Callers -> Callees
| Callees -> Callers
;;
end
module Fragment = struct
module Id = Identifier.Make ()
type t =
{ id : Id.t
; mutable entry : Entry.t
; mutable first_caller : Location.t
; last_callee : Location.t
; mutable retraction_by_caller : t
; mutable retraction_by_callee : t
; mutable extensions_by_caller : (Location.t, t) List.Assoc.t
; mutable extensions_by_callee : (Location.t, t) List.Assoc.t
; mutable representative : t
; mutable length : int
}
[@@deriving fields]
let is_empty t = phys_equal t t.retraction_by_caller
let same t1 t2 = phys_equal t1 t2
let first t ~orient =
match orient with
| Orientation.Callers -> t.first_caller
| Orientation.Callees -> t.last_callee
;;
let retract t ~orient =
if is_empty t
then None
else (
let retraction =
match orient with
| Orientation.Callers -> t.retraction_by_caller
| Orientation.Callees -> t.retraction_by_callee
in
Some retraction)
;;
let rec retract_by t ~orient ~n =
if n <= 0
then Some t
else (
match retract t ~orient with
| None -> None
| Some t -> retract_by t ~orient ~n:(n - 1))
;;
let backtrace t =
let rec loop t acc =
if is_empty t then acc else loop t.retraction_by_callee (t.last_callee :: acc)
in
loop t []
;;
let is_trivial t =
is_empty t || (is_empty t.retraction_by_callee && Location.is_special t.last_callee)
;;
let backtrace_rev t =
let rec loop t acc =
if is_empty t
then acc
else loop t.retraction_by_caller (Backtrace.Reversed.cons t.first_caller acc)
in
loop t Backtrace.Reversed.nil
;;
let rec deep_fold_callers t ~backtrace ~init ~f =
let init = f ~backtrace ~fragment:t init in
List.fold t.extensions_by_caller ~init ~f:(fun acc (loc, child) ->
let backtrace = loc :: backtrace in
deep_fold_callers child ~backtrace ~init:acc ~f)
;;
let rec deep_fold_callees t ~backtrace_rev ~init ~f =
let init = f ~backtrace_rev ~fragment:t init in
List.fold t.extensions_by_callee ~init ~f:(fun acc (loc, child) ->
let backtrace_rev = Backtrace.Reversed.cons loc backtrace_rev in
deep_fold_callees child ~backtrace_rev ~init:acc ~f)
;;
let one_frame_extensions t ~orient =
match orient with
| Orientation.Callers -> t.extensions_by_caller
| Callees -> t.extensions_by_callee
;;
let has_extensions t ~orient = not (List.is_empty (one_frame_extensions t ~orient))
let extend t ~orient loc =
List.Assoc.find ~equal:Location.equal (one_frame_extensions t ~orient) loc
;;
let rec extend_by_callers t backtrace_rev =
match Backtrace.Reversed.head_and_tail backtrace_rev with
| None -> Some t
| Some (loc, locs) ->
let%bind.Option child = extend ~orient:Callers t loc in
extend_by_callers child locs
;;
let rec extend_by_callees t backtrace =
match backtrace with
| [] -> Some t
| loc :: locs ->
let%bind.Option child = extend ~orient:Callees t loc in
extend_by_callees child locs
;;
let is_extension t ~extension ~orient =
let n = length extension - length t in
if n < 0
then false
else (
match retract_by ~orient ~n extension with
| None -> assert false
| Some extension -> same extension t)
;;
module Debug = struct
type nonrec t = t
let sexp_of_t t =
[%message
""
~id:(t.id : Id.t)
~allocations:(t.entry.allocations : Byte_units.t)
~backtrace:(backtrace t : Backtrace.Debug.t)]
;;
end
module Oriented = struct
type nonrec t =
{ fragment : t
; orient : Orientation.t
}
let fragment { fragment; _ } = fragment
let orient { orient; _ } = orient
let first { fragment; orient } = first fragment ~orient
let retract { fragment; orient } =
let%map.Option fragment = retract fragment ~orient in
{ fragment; orient }
;;
let retract_by { fragment; orient } ~n =
let%map.Option fragment = retract_by fragment ~orient ~n in
{ fragment; orient }
;;
let one_frame_extensions { fragment; orient } =
one_frame_extensions fragment ~orient
|> List.Assoc.map ~f:(fun fragment -> { fragment; orient })
;;
let extend { fragment; orient } loc =
let%map.Option fragment = extend fragment ~orient loc in
{ fragment; orient }
;;
let has_extensions { fragment; orient } = has_extensions fragment ~orient
module Debug = struct
type nonrec t = t =
{ fragment : Debug.t
; orient : Orientation.t
}
[@@deriving sexp_of]
end
end
let oriented fragment ~orient = { Oriented.fragment; orient }
module Iterator = struct
type nonrec t =
{ prefix : t
; suffix : t
}
let prefix { prefix; _ } = prefix
let suffix { suffix; _ } = suffix
let location { suffix; _ } = first ~orient:Callers suffix
let next { prefix; suffix } =
match retract ~orient:Callers suffix with
| None -> assert false
| Some suffix ->
if is_empty suffix
then None
else (
let next_loc = first ~orient:Callers suffix in
let prefix =
match extend ~orient:Callees prefix next_loc with
| Some fragment -> fragment
| None -> assert false
in
Some { prefix; suffix })
;;
let prev { prefix; suffix } =
match retract ~orient:Callees prefix with
| None -> assert false
| Some prefix ->
let next_loc = first ~orient:Callees prefix in
if is_empty prefix
then None
else (
let suffix =
match extend ~orient:Callers suffix next_loc with
| Some fragment -> fragment
| None -> assert false
in
Some { prefix; suffix })
;;
module Trace = struct
module T = struct
type t =
{ prefix_trace : Backtrace.Reversed.t
; suffix_trace : Backtrace.t
}
[@@deriving sexp, bin_io, compare, hash]
end
include T
include Comparable.Make_binable (T)
end
let trace { prefix; suffix } =
let prefix_trace = backtrace_rev prefix in
let suffix_trace = backtrace suffix in
{ Trace.prefix_trace; suffix_trace }
;;
end
let iterator_start t =
if is_empty t
then None
else (
let rec loop prefix =
match retract ~orient:Callees prefix with
| None -> assert false
| Some prev -> if is_empty prev then prefix else loop prev
in
let prefix = loop t in
let suffix = t in
Some { Iterator.prefix; suffix })
;;
let iterator_end t =
if is_empty t
then None
else (
let rec loop suffix =
match retract ~orient:Callers suffix with
| None -> assert false
| Some next -> if is_empty next then suffix else loop next
in
let suffix = loop t in
let prefix = t in
Some { Iterator.prefix; suffix })
;;
end
module Fragment_trie = struct
type t =
{ root : Fragment.t
; children_of_root : Fragment.t Location.Table.t
; total_allocations : Byte_units.t
}
module type Suffix_tree =
Data_intf.Suffix_tree with type entry := Entry.t and type location := Location.t
let invariant_on_suffix_tree
(type tree)
(module Tree : Suffix_tree with type t = tree)
(tree : tree)
=
let backtraces_by_id : Backtrace.Reversed.t Tree.Node.Id.Table.t =
let table = Tree.Node.Id.Table.create () in
let rec loop ~node ~backtrace_rev =
Hashtbl.set table ~key:(Tree.Node.id node) ~data:backtrace_rev;
List.iter (Tree.Node.children node) ~f:(fun (edge, child) ->
let backtrace_rev = Backtrace.Reversed.cons edge backtrace_rev in
loop ~node:child ~backtrace_rev)
in
loop ~node:(Tree.root tree) ~backtrace_rev:Backtrace.Reversed.nil;
table
in
List.iter
(Tree.Node.children (Tree.root tree))
~f:(fun (_edge, child_of_root) ->
let rec loop ~node ~suffix_backtrace_rev =
let suffix =
match Tree.Node.suffix node with
| None ->
raise_s [%message "Non-root node has no suffix" (node : Tree.Node.Debug.t)]
| Some suffix -> suffix
in
let actual_suffix_backtrace_rev =
match Hashtbl.find backtraces_by_id (Tree.Node.id suffix) with
| Some backtrace -> backtrace
| None ->
raise_s
[%message
"Node's suffix not found by id"
(node : Tree.Node.Debug.t)
(suffix : Tree.Node.Debug.t)]
in
if not
(Backtrace.Reversed.equal suffix_backtrace_rev actual_suffix_backtrace_rev)
then
raise_s
[%message
"Node's suffix has wrong backtrace"
(node : Tree.Node.Debug.t)
(suffix : Tree.Node.Debug.t)
~expected_suffix:(suffix_backtrace_rev : Backtrace.Reversed.Debug.t)
~found_suffix:(actual_suffix_backtrace_rev : Backtrace.Reversed.Debug.t)];
List.iter (Tree.Node.children node) ~f:(fun (edge, child) ->
let suffix_backtrace_rev =
Backtrace.Reversed.cons edge suffix_backtrace_rev
in
loop ~node:child ~suffix_backtrace_rev)
in
loop ~node:child_of_root ~suffix_backtrace_rev:Backtrace.Reversed.nil)
;;
let invariant t =
Fragment.deep_fold_callees
t.root
~init:()
~backtrace_rev:Backtrace.Reversed.nil
~f:(fun ~backtrace_rev ~fragment () ->
if not (Backtrace.Reversed.equal backtrace_rev (Fragment.backtrace_rev fragment))
then
raise_s
[%message
"Fragment's reversed backtrace doesn't match accumulator"
(backtrace_rev : Backtrace.Reversed.Debug.t)
(Fragment.backtrace_rev fragment : Backtrace.Reversed.Debug.t)];
let rev_of_backtrace =
Fragment.backtrace fragment |> List.rev |> Backtrace.Reversed.of_reversed_list
in
if not (Backtrace.Reversed.equal backtrace_rev rev_of_backtrace)
then
raise_s
[%message
"Fragment's forward and backward backtraces don't match"
(backtrace_rev : Backtrace.Reversed.Debug.t)
(rev_of_backtrace : Backtrace.Reversed.Debug.t)])
;;
let create ~(root : Fragment.t) ~total_allocations =
assert (
List.equal
(Tuple2.equal ~eq1:Location.equal ~eq2:Fragment.same)
root.extensions_by_caller
root.extensions_by_callee);
let children_of_root = Location.Table.of_alist_exn root.extensions_by_callee in
let t = { root; children_of_root; total_allocations } in
if enable_invariants then invariant t;
t
;;
let empty_fragment t = t.root
let allocation_site_fragment t =
Location.Table.find_exn t.children_of_root Location.allocation_site
;;
let toplevel_fragment t = Location.Table.find_exn t.children_of_root Location.toplevel
let empty =
let id_gen = Fragment.Id.Generator.create () in
let rec allocation_site : Fragment.t =
{ id = Fragment.Id.Generator.generate id_gen
; entry = Entry.empty
; first_caller = Allocation_site
; last_callee = Allocation_site
; retraction_by_caller = root
; retraction_by_callee = root
; extensions_by_caller = []
; extensions_by_callee = []
; representative = allocation_site
; length = 1
}
and toplevel : Fragment.t =
{ id = Fragment.Id.Generator.generate id_gen
; entry = Entry.empty
; first_caller = Toplevel
; last_callee = Toplevel
; retraction_by_caller = root
; retraction_by_callee = root
; extensions_by_caller = []
; extensions_by_callee = []
; representative = toplevel
; length = 1
}
and children_of_root =
[ Location.allocation_site, allocation_site; Location.toplevel, toplevel ]
and root : Fragment.t =
{ id = Fragment.Id.Generator.generate id_gen
; entry = Entry.empty
; first_caller = Dummy
; last_callee = Dummy
; retraction_by_caller = root
; retraction_by_callee = root
; extensions_by_caller = children_of_root
; extensions_by_callee = children_of_root
; representative = root
; length = 0
}
in
let total_allocations = Byte_units.zero in
create ~root ~total_allocations
;;
let of_suffix_tree
(type tree)
(module Tree : Suffix_tree with type t = tree)
(tree : tree)
: t
=
if enable_invariants then invariant_on_suffix_tree (module Tree) tree;
let id_gen = Fragment.Id.Generator.create () in
let old_root_node = Tree.root tree in
let old_root_children = Tree.Node.children old_root_node in
if List.is_empty old_root_children
then empty
else (
let cache : Fragment.t Tree.Node.Id.Table.t = Tree.Node.Id.Table.create () in
let rec new_root_node =
{ Fragment.id = Fragment.Id.Generator.generate id_gen
; entry = Tree.Node.entry old_root_node
; first_caller = Dummy
; last_callee = Dummy
; retraction_by_caller = new_root_node
; retraction_by_callee = new_root_node
; extensions_by_caller = []
; extensions_by_callee = []
; representative = new_root_node
; length = 0
}
in
Tree.Node.Id.Table.add_exn
cache
~key:(Tree.Node.id old_root_node)
~data:new_root_node;
let node_of old_node =
Tree.Node.Id.Table.find_or_add cache (Tree.Node.id old_node) ~default:(fun () ->
let id = Fragment.Id.Generator.generate id_gen in
let entry = Tree.Node.entry old_node in
let first_caller = Location.Dummy in
let last_callee = Tree.Node.incoming_edge old_node in
let retraction_by_caller = new_root_node in
let retraction_by_callee = new_root_node in
let extensions_by_caller = [] in
let extensions_by_callee = [] in
let representative = new_root_node in
let length = 0 in
{ Fragment.id
; entry
; first_caller
; last_callee
; retraction_by_caller
; retraction_by_callee
; extensions_by_caller
; extensions_by_callee
; representative
; length
})
in
let rec translate ~length ~first_edge ~new_parent (last_edge, old_node) =
let new_node = node_of old_node in
new_node.first_caller <- first_edge;
new_node.length <- length;
new_node.extensions_by_callee
<- List.map
~f:(translate ~length:(length + 1) ~first_edge ~new_parent:new_node)
(Tree.Node.children old_node);
new_node.retraction_by_callee <- new_parent;
let parent_by_caller =
match Tree.Node.suffix old_node with
| Some old_suffix -> node_of old_suffix
| None ->
raise_s
[%message
"non-root node has no suffix"
~id:(Tree.Node.id old_node : Tree.Node.Id.t)
~debug:(old_node : Tree.Node.Debug.t)]
in
new_node.retraction_by_caller <- parent_by_caller;
parent_by_caller.extensions_by_caller
<- (first_edge, new_node) :: parent_by_caller.extensions_by_caller;
new_node.representative <- node_of (Tree.Node.representative old_node);
last_edge, new_node
in
let children_of_root =
List.map old_root_children ~f:(fun ((first_edge, _) as child) ->
translate ~length:1 ~first_edge ~new_parent:new_root_node child)
in
new_root_node.extensions_by_caller <- children_of_root;
new_root_node.extensions_by_callee <- children_of_root;
let total_allocations = Tree.total_allocations tree in
create ~root:new_root_node ~total_allocations)
;;
let deep_fold_callers t ~init ~f =
Fragment.deep_fold_callers t.root ~backtrace:[] ~init ~f
;;
let deep_fold_callees t ~init ~f =
Fragment.deep_fold_callees t.root ~backtrace_rev:Backtrace.Reversed.nil ~init ~f
;;
let fold_singletons t ~init ~f =
Location.Table.fold t.children_of_root ~init ~f:(fun ~key ~data ->
f ~location:key ~fragment:data)
;;
let total_allocations t = t.total_allocations
let find t backtrace =
match backtrace with
| [] -> Some t.root
| first :: backtrace ->
let%bind.Option child = Location.Table.find t.children_of_root first in
Fragment.extend_by_callees child backtrace
;;
let find_rev t backtrace_rev =
match Backtrace.Reversed.head_and_tail backtrace_rev with
| None -> Some t.root
| Some (first, backtrace_rev) ->
let%bind.Option child = Location.Table.find t.children_of_root first in
Fragment.extend_by_callers child backtrace_rev
;;
let find_singleton t location = Location.Table.find t.children_of_root location
let find_iterator t { Fragment.Iterator.Trace.prefix_trace; suffix_trace } =
let%bind.Option prefix = find_rev t prefix_trace in
let%bind.Option suffix = find t suffix_trace in
let%map.Option (_ : Fragment.t) =
let prefix_tail = Option.value_exn (Backtrace.Reversed.tl prefix_trace) in
Fragment.extend_by_callers suffix prefix_tail
in
{ Fragment.Iterator.prefix; suffix }
;;
module Serialized = struct
module Unserialized_fragment = Fragment
module Fragment = struct
type t =
{ id : Fragment.Id.t
; entry : Entry.t
; first_caller : Location.t
; last_callee : Location.t
; retraction_id_by_caller : Fragment.Id.t
; extension_ids_by_caller : (Location.t, Fragment.Id.t) List.Assoc.t
; extensions_by_callee : (Location.t, t) List.Assoc.t
; representative_id : Fragment.Id.t
; length : int
}
[@@deriving bin_io, sexp]
let rec of_trie_node
({ id
; entry
; first_caller
; last_callee
; retraction_by_caller
; retraction_by_callee = _
; extensions_by_caller
; extensions_by_callee
; representative
; length
} :
Fragment.t)
=
let retraction_id_by_caller = retraction_by_caller.id in
let extension_ids_by_caller =
List.Assoc.map extensions_by_caller ~f:(fun (child : Fragment.t) -> child.id)
in
let extensions_by_callee = List.Assoc.map ~f:of_trie_node extensions_by_callee in
let representative_id = representative.id in
{ id
; entry
; first_caller
; last_callee
; retraction_id_by_caller
; extension_ids_by_caller
; extensions_by_callee
; representative_id
; length
}
;;
end
type trie = t
type t =
{ root : Fragment.t
; total_allocations : Byte_units.Stable.V2.t
}
[@@deriving sexp, bin_io]
let serialize (trie : trie) =
let root = Fragment.of_trie_node trie.root in
let total_allocations = trie.total_allocations in
{ root; total_allocations }
;;
let unserialize t : trie =
let fragment_cache : Unserialized_fragment.t Unserialized_fragment.Id.Table.t =
Unserialized_fragment.Id.Table.create ()
in
let find_in_cache desc id =
match Unserialized_fragment.Id.Table.find fragment_cache id with
| Some fragment -> fragment
| None -> raise_s [%message desc (id : Unserialized_fragment.Id.t)]
in
let rec unserialize_without_callers
~retraction_by_callee
({ id
; entry
; first_caller
; last_callee
; retraction_id_by_caller = _
; extension_ids_by_caller = _
; extensions_by_callee
; representative_id = _
; length
} :
Fragment.t)
=
let rec fragment : Unserialized_fragment.t =
{ id
; entry
; first_caller
; last_callee
; retraction_by_caller = fragment
; retraction_by_callee
; extensions_by_caller = []
; extensions_by_callee = []
; representative = fragment
; length
}
in
fragment.extensions_by_callee
<- List.Assoc.map
~f:(unserialize_without_callers ~retraction_by_callee:fragment)
extensions_by_callee;
Unserialized_fragment.Id.Table.add_exn fragment_cache ~key:id ~data:fragment;
fragment
in
let rec fill_in_callers
(new_fragment : Unserialized_fragment.t)
(old_fragment : Fragment.t)
=
new_fragment.retraction_by_caller
<- find_in_cache "retraction_by_caller" old_fragment.retraction_id_by_caller;
let extensions_by_caller =
List.Assoc.map
~f:(find_in_cache "extensions_by_caller")
old_fragment.extension_ids_by_caller
in
new_fragment.extensions_by_caller <- extensions_by_caller;
new_fragment.representative
<- find_in_cache "representative" old_fragment.representative_id;
List.iter2_exn
new_fragment.extensions_by_callee
old_fragment.extensions_by_callee
~f:(fun (_, new_child) (_, old_child) -> fill_in_callers new_child old_child)
in
let rec root =
{ Unserialized_fragment.id = t.root.id
; entry = t.root.entry
; first_caller = t.root.first_caller
; last_callee = t.root.last_callee
; retraction_by_caller = root
; retraction_by_callee = root
; extensions_by_caller = []
; extensions_by_callee = []
; representative = root
; length = 0
}
in
Unserialized_fragment.Id.Table.add_exn fragment_cache ~key:root.id ~data:root;
root.extensions_by_callee
<- List.Assoc.map
~f:(unserialize_without_callers ~retraction_by_callee:root)
t.root.extensions_by_callee;
fill_in_callers root t.root;
let total_allocations = t.total_allocations in
create ~root ~total_allocations
;;
end
include
Sexpable.Of_sexpable
(Serialized)
(struct
type nonrec t = t
let to_sexpable = Serialized.serialize
let of_sexpable = Serialized.unserialize
end)
end
module type Suffix_tree = Fragment_trie.Suffix_tree
module Info = struct
type t =
{ sample_rate : float
; word_size : int
; executable_name : string
; host_name : string
; ocaml_runtime_params : string
; pid : Int64.t
; start_time : Time_ns.Stable.Alternate_sexp.V1.t
; context : string option
}
[@@deriving sexp, bin_io]
end
type t =
{ graph : Graph.t
; filtered_graph : Graph.t option
; trie : Fragment_trie.t
; total_allocations_unfiltered : Byte_units.Stable.V2.t
; hot_paths : Fragment.t list
; hot_call_sites : Fragment.t list
; info : Info.t option
}
module Serialized = struct
type t =
{ graph : Graph.t
; filtered_graph : Graph.t option
; serialized_trie : Fragment_trie.Serialized.t
; total_allocations_unfiltered : Byte_units.Stable.V2.t
; hot_path_backtraces : Backtrace.t list
; hot_call_site_locations : Location.t list
; info : Info.t option
}
[@@deriving sexp, bin_io]
let serialize
{ hot_paths
; hot_call_sites
; graph
; filtered_graph
; trie
; total_allocations_unfiltered
; info
}
=
let hot_path_backtraces = List.map ~f:Fragment.backtrace hot_paths in
let hot_call_site_locations =
List.map ~f:(Fragment.first ~orient:Callers) hot_call_sites
in
let serialized_trie = Fragment_trie.Serialized.serialize trie in
{ hot_path_backtraces
; hot_call_site_locations
; graph
; filtered_graph
; serialized_trie
; total_allocations_unfiltered
; info
}
;;
let unserialize
{ hot_path_backtraces
; hot_call_site_locations
; graph
; filtered_graph
; serialized_trie
; total_allocations_unfiltered
; info
}
=
let trie = Fragment_trie.Serialized.unserialize serialized_trie in
let hot_paths =
hot_path_backtraces
|> List.map ~f:(fun backtrace ->
Fragment_trie.find trie backtrace |> Option.value_exn)
in
let hot_call_sites =
hot_call_site_locations
|> List.map ~f:(fun location ->
Fragment_trie.find_singleton trie location |> Option.value_exn)
in
{ hot_paths
; hot_call_sites
; graph
; filtered_graph
; trie
; total_allocations_unfiltered
; info
}
;;
end
include
Sexpable.Of_sexpable
(Serialized)
(struct
type nonrec t = t
let to_sexpable = Serialized.serialize
let of_sexpable = Serialized.unserialize
end)
let empty =
{ graph = Graph.create []
; filtered_graph = None
; trie = Fragment_trie.empty
; total_allocations_unfiltered = Byte_units.zero
; hot_paths = []
; hot_call_sites = []
; info = None
}
;;