@ -341,33 +341,56 @@ module Dom = struct
fields field_checks } )
let is_known_expensive_method =
let dispatch : ( Tenv . t , unit , unit ) ProcnameDispatcher . Call . dispatcher =
type known_expensiveness = KnownCheap | KnownExpensive
let get_expensiveness_model =
let dispatch : ( Tenv . t , known_expensiveness , unit ) ProcnameDispatcher . Call . dispatcher =
let open ProcnameDispatcher . Call in
make_dispatcher
[ + PatternMatch . Java . implements_google " common.base.Preconditions "
& :: " checkArgument " $ any_arg $+ any_arg $+ .. . $- -> ()
[ + BuiltinDecl . ( match_builtin _ _ cast ) < > - -> KnownCheap
; + PatternMatch . Java . implements_google " common.base.Preconditions "
& :: " checkArgument " $ any_arg $+ any_arg $+ .. . $- -> KnownExpensive
; + PatternMatch . Java . implements_google " common.base.Preconditions "
& :: " checkElementIndex " $ any_arg $+ any_arg $+ any_arg $+ .. . $- -> ()
& :: " checkElementIndex " $ any_arg $+ any_arg $+ any_arg $+ .. . $- -> KnownExpensive
; + PatternMatch . Java . implements_google " common.base.Preconditions "
& :: " checkNotNull " $ any_arg $+ any_arg $+ .. . $- -> ()
& :: " checkNotNull " $ any_arg $+ any_arg $+ .. . $- -> KnownExpensive
; + PatternMatch . Java . implements_google " common.base.Preconditions "
& :: " checkPositionIndex " $ any_arg $+ any_arg $+ any_arg $+ .. . $- -> ()
& :: " checkPositionIndex " $ any_arg $+ any_arg $+ any_arg $+ .. . $- -> KnownExpensive
; + PatternMatch . Java . implements_google " common.base.Preconditions "
& :: " checkState " $ any_arg $+ any_arg $+ .. . $- -> ()
; + PatternMatch . Java . implements_lang " String " & :: " concat " & - -> ()
; + PatternMatch . Java . implements_lang " StringBuilder " & :: " append " & - -> () ]
& :: " checkState " $ any_arg $+ any_arg $+ .. . $- -> KnownExpensive
; + PatternMatch . Java . implements_lang " String " & :: " concat " & - -> KnownExpensive
; + PatternMatch . Java . implements_lang " StringBuilder " & :: " append " & - -> KnownExpensive ]
in
fun tenv pname args ->
let args =
List . map args ~ f : ( fun ( exp , typ ) ->
ProcnameDispatcher . Call . FuncArg . { exp ; typ ; arg_payload = () } )
in
dispatch tenv pname args | > Option . is_some
dispatch tenv pname args
let call tenv analyze_dependency ~ is_cheap_call callee args location
( { config_checks ; field_checks ; unchecked_callees ; unchecked_callees_cond } as astate ) =
let join_unchecked_callees new_unchecked_callees new_unchecked_callees_cond =
if FieldChecks . is_top field_checks then
{ astate with
unchecked_callees = UncheckedCallees . join unchecked_callees new_unchecked_callees
; unchecked_callees_cond =
UncheckedCalleesCond . join unchecked_callees_cond new_unchecked_callees_cond }
else
let fields_to_add = FieldChecks . get_fields field_checks in
let unchecked_callees_cond =
UncheckedCalleesCond . weak_update fields_to_add new_unchecked_callees
unchecked_callees_cond
in
let unchecked_callees_cond =
UncheckedCalleesCond . fold
( fun fields callees acc ->
UncheckedCalleesCond . weak_update ( Fields . union fields fields_to_add ) callees acc )
new_unchecked_callees_cond unchecked_callees_cond
in
{ astate with unchecked_callees_cond }
in
if ConfigChecks . is_top config_checks then
let ( callee_summary : Summary . t option ) =
match analyze_dependency callee with
@ -376,20 +399,24 @@ module Dom = struct
| Some ( _ , ( _ , analysis_data , _ ) ) ->
analysis_data
in
let is_expensive = is_known_expensive_method tenv callee args in
let expensiveness_model = get_expensiveness_model tenv callee args in
let has_expensive_callee =
Option . exists callee_summary ~ f : Summary . has_known_expensive_callee
in
if is_cheap_call && ( not is_expensive ) && not has_expensive_callee then
match expensiveness_model with
| None when is_cheap_call && not has_expensive_callee ->
(* If callee is cheap by heuristics, ignore it. *)
astate
else
let new_unchecked_callees , new_unchecked_callees_cond =
if is_expensive then
| Some KnownCheap ->
(* If callee is known cheap by model, ignore it. *)
astate
| Some KnownExpensive ->
(* If callee is known expensive by model, add callee's name. *)
join_unchecked_callees
( UncheckedCallees . singleton
( UncheckedCallee . make ~ is_known_expensive : true callee location )
, UncheckedCalleesCond . empty )
else
( UncheckedCallee . make ~ is_known_expensive : true callee location ) )
UncheckedCalleesCond . empty
| None -> (
match callee_summary with
| Some
{ Summary . unchecked_callees = callee_summary
@ -397,32 +424,15 @@ module Dom = struct
; has_call_stmt }
when has_call_stmt ->
(* If callee's summary is not leaf, use it. *)
( UncheckedCallees . replace_location_by_call location callee_summary
, UncheckedCalleesCond . replace_location_by_call location callee_summary_cond )
join_unchecked_callees
( UncheckedCallees . replace_location_by_call location callee_summary )
( UncheckedCalleesCond . replace_location_by_call location callee_summary_cond )
| _ ->
(* Otherwise, add callee's name. *)
join_unchecked_callees
( UncheckedCallees . singleton
( UncheckedCallee . make ~ is_known_expensive : false callee location )
, UncheckedCalleesCond . empty )
in
if FieldChecks . is_top field_checks then
{ astate with
unchecked_callees = UncheckedCallees . join unchecked_callees new_unchecked_callees
; unchecked_callees_cond =
UncheckedCalleesCond . join unchecked_callees_cond new_unchecked_callees_cond }
else
let fields_to_add = FieldChecks . get_fields field_checks in
let unchecked_callees_cond =
UncheckedCalleesCond . weak_update fields_to_add new_unchecked_callees
unchecked_callees_cond
in
let unchecked_callees_cond =
UncheckedCalleesCond . fold
( fun fields callees acc ->
UncheckedCalleesCond . weak_update ( Fields . union fields fields_to_add ) callees acc )
new_unchecked_callees_cond unchecked_callees_cond
in
{ astate with unchecked_callees_cond }
( UncheckedCallee . make ~ is_known_expensive : false callee location ) )
UncheckedCalleesCond . empty )
else astate
end
Sungkeun Cho
4 years ago
committed by
Facebook GitHub Bot