diff options
Diffstat (limited to 'erts/preloaded/src/erlang.erl')
| -rw-r--r-- | erts/preloaded/src/erlang.erl | 338 |
1 files changed, 308 insertions, 30 deletions
diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl index 611a568014..fd11c101bc 100644 --- a/erts/preloaded/src/erlang.erl +++ b/erts/preloaded/src/erlang.erl @@ -38,7 +38,6 @@ -export([integer_to_list/2]). -export([integer_to_binary/2]). --export([flush_monitor_message/2]). -export([set_cpu_topology/1, format_cpu_topology/1]). -export([await_proc_exit/3]). -export([memory/0, memory/1]). @@ -48,7 +47,7 @@ await_sched_wall_time_modifications/2, gather_gc_info_result/1]). --deprecated([hash/2]). +-deprecated([hash/2, now/0]). %% Get rid of autoimports of spawn to avoid clashes with ourselves. -compile({no_auto_import,[spawn_link/1]}). @@ -58,12 +57,21 @@ -compile({no_auto_import,[spawn_opt/5]}). -export_type([timestamp/0]). +-export_type([time_unit/0]). -type ext_binary() :: binary(). -type timestamp() :: {MegaSecs :: non_neg_integer(), Secs :: non_neg_integer(), MicroSecs :: non_neg_integer()}. +-type time_unit() :: + pos_integer() + | 'seconds' + | 'milli_seconds' + | 'micro_seconds' + | 'nano_seconds' + | 'native'. + %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% Native code BIF stubs and their types %% (BIF's actually implemented in this module goes last in the file) @@ -81,7 +89,7 @@ -export([binary_to_list/3, binary_to_term/1, binary_to_term/2]). -export([bit_size/1, bitsize/1, bitstring_to_list/1]). -export([bump_reductions/1, byte_size/1, call_on_load_function/1]). --export([cancel_timer/1, check_old_code/1, check_process_code/2, +-export([cancel_timer/1, cancel_timer/2, check_old_code/1, check_process_code/2, check_process_code/3, crc32/1]). -export([crc32/2, crc32_combine/3, date/0, decode_packet/3]). -export([delete_element/2]). @@ -93,7 +101,7 @@ float_to_list/1, float_to_list/2]). -export([fun_info/2, fun_info_mfa/1, fun_to_list/1, function_exported/3]). -export([garbage_collect/0, garbage_collect/1, garbage_collect/2]). --export([garbage_collect_message_area/0, get/0, get/1, get_keys/1]). +-export([garbage_collect_message_area/0, get/0, get/1, get_keys/0, get_keys/1]). -export([get_module_info/1, get_stacktrace/0, group_leader/0]). -export([group_leader/2, halt/0, halt/1, halt/2, hash/2, hibernate/3]). -export([insert_element/3]). @@ -104,7 +112,8 @@ -export([list_to_bitstring/1, list_to_existing_atom/1, list_to_float/1]). -export([list_to_integer/1, list_to_integer/2]). -export([list_to_pid/1, list_to_tuple/1, loaded/0]). --export([localtime/0, make_ref/0, map_size/1, match_spec_test/3, md5/1, md5_final/1]). +-export([localtime/0, make_ref/0]). +-export([map_size/1, match_spec_test/3, md5/1, md5_final/1]). -export([md5_init/0, md5_update/2, module_loaded/1, monitor/2]). -export([monitor_node/2, monitor_node/3, nif_error/1, nif_error/2]). -export([node/0, node/1, now/0, phash/2, phash2/1, phash2/2]). @@ -112,9 +121,14 @@ -export([port_connect/2, port_control/3, port_get_data/1]). -export([port_set_data/2, port_to_list/1, ports/0]). -export([posixtime_to_universaltime/1, pre_loaded/0, prepare_loading/2]). +-export([monotonic_time/0, monotonic_time/1]). +-export([system_time/0, system_time/1]). +-export([convert_time_unit/3]). +-export([unique_integer/0, unique_integer/1]). +-export([time_offset/0, time_offset/1, timestamp/0]). -export([process_display/2]). -export([process_flag/3, process_info/1, processes/0, purge_module/1]). --export([put/2, raise/3, read_timer/1, ref_to_list/1, register/2]). +-export([put/2, raise/3, read_timer/1, read_timer/2, ref_to_list/1, register/2]). -export([registered/0, resume_process/1, round/1, self/0, send_after/3]). -export([seq_trace/2, seq_trace_print/1, seq_trace_print/2, setnode/2]). -export([setnode/3, size/1, spawn/3, spawn_link/3, split_binary/2]). @@ -413,8 +427,77 @@ call_on_load_function(_P1) -> -spec erlang:cancel_timer(TimerRef) -> Time | false when TimerRef :: reference(), Time :: non_neg_integer(). -cancel_timer(_TimerRef) -> - erlang:nif_error(undefined). +cancel_timer(TimerRef) -> + try + case erts_internal:access_bif_timer(TimerRef) of + undefined -> + false; + {BTR, TSrv} -> + Req = erlang:make_ref(), + TSrv ! {cancel_timeout, BTR, erlang:self(), + true, Req, TimerRef}, + receive + {cancel_timer, Req, Result} -> + Result + end + end + catch + _:_ -> erlang:error(badarg, [TimerRef]) + end. + +%% cancel_timer/2 +-spec erlang:cancel_timer(TimerRef, Options) -> Time | false | ok when + TimerRef :: reference(), + Option :: {async, boolean()} | {info, boolean()}, + Options :: [Option], + Time :: non_neg_integer(). +cancel_timer(TimerRef, Options) -> + try + {Async, Info} = get_cancel_timer_options(Options, false, true), + case erts_internal:access_bif_timer(TimerRef) of + undefined -> + case {Async, Info} of + {true, true} -> + erlang:self() ! {cancel_timer, TimerRef, false}, ok; + {false, true} -> + false; + _ -> + ok + end; + {BTR, TSrv} -> + case Async of + true -> + TSrv ! {cancel_timeout, BTR, erlang:self(), + Info, TimerRef, TimerRef}, + ok; + false -> + Req = erlang:make_ref(), + TSrv ! {cancel_timeout, BTR, erlang:self(), + true, Req, TimerRef}, + receive + {cancel_timer, Req, Result} -> + case Info of + true -> Result; + false -> ok + end + end + end + end + catch + _:_ -> erlang:error(badarg, [TimerRef, Options]) + end. + +get_cancel_timer_options([], Async, Info) -> + {Async, Info}; +get_cancel_timer_options([{async, Bool} | Opts], + _Async, Info) when Bool == true; + Bool == false -> + get_cancel_timer_options(Opts, Bool, Info); +get_cancel_timer_options([{info, Bool} | Opts], + Async, _Info) when Bool == true; + Bool == false -> + get_cancel_timer_options(Opts, Async, Bool). + %% check_old_code/1 -spec check_old_code(Module) -> boolean() when @@ -931,6 +1014,12 @@ get() -> get(_Key) -> erlang:nif_error(undefined). +%% get_keys/0 +-spec get_keys() -> [Key] when + Key :: term(). +get_keys() -> + erlang:nif_error(undefined). + %% get_keys/1 -spec get_keys(Val) -> [Key] when Val :: term(), @@ -1184,13 +1273,18 @@ md5_update(_Context, _Data) -> module_loaded(_Module) -> erlang:nif_error(undefined). +-type registered_name() :: atom(). + +-type registered_process_identifier() :: registered_name() | {registered_name(), node()}. + +-type monitor_process_identifier() :: pid() | registered_process_identifier(). + %% monitor/2 --spec monitor(Type, Item) -> MonitorRef when - Type :: process, - Item :: pid() | RegName | {RegName, Node}, - RegName :: module(), - Node :: node(), +-spec monitor(process, monitor_process_identifier()) -> MonitorRef when + MonitorRef :: reference(); + (time_offset, clock_service) -> MonitorRef when MonitorRef :: reference(). + monitor(_Type, _Item) -> erlang:nif_error(undefined). @@ -1292,6 +1386,90 @@ ports() -> posixtime_to_universaltime(_P1) -> erlang:nif_error(undefined). +-spec erlang:unique_integer(ModifierList) -> integer() when + ModifierList :: [Modifier], + Modifier :: positive | monotonic. + +unique_integer(_ModifierList) -> + erlang:nif_error(undefined). + +-spec erlang:unique_integer() -> integer(). + +unique_integer() -> + erlang:nif_error(undefined). + +-spec erlang:monotonic_time() -> integer(). + +monotonic_time() -> + erlang:nif_error(undefined). + +-spec erlang:monotonic_time(Unit) -> integer() when + Unit :: time_unit(). + +monotonic_time(_Unit) -> + erlang:nif_error(undefined). + +-spec erlang:system_time() -> integer(). + +system_time() -> + erlang:nif_error(undefined). + +-spec erlang:system_time(Unit) -> integer() when + Unit :: time_unit(). + +system_time(_Unit) -> + erlang:nif_error(undefined). + +-spec erlang:convert_time_unit(Time, FromUnit, ToUnit) -> ConvertedTime when + Time :: integer(), + ConvertedTime :: integer(), + FromUnit :: time_unit(), + ToUnit :: time_unit(). + +convert_time_unit(Time, FromUnit, ToUnit) -> + try + FU = case FromUnit of + native -> erts_internal:time_unit(); + nano_seconds -> 1000*1000*1000; + micro_seconds -> 1000*1000; + milli_seconds -> 1000; + seconds -> 1; + _ when FromUnit > 0 -> FromUnit + end, + TU = case ToUnit of + native -> erts_internal:time_unit(); + nano_seconds -> 1000*1000*1000; + micro_seconds -> 1000*1000; + milli_seconds -> 1000; + seconds -> 1; + _ when ToUnit > 0 -> ToUnit + end, + case Time < 0 of + true -> TU*Time - (FU - 1); + false -> TU*Time + end div FU + catch + _ : _ -> + erlang:error(badarg, [Time, FromUnit, ToUnit]) + end. + +-spec erlang:time_offset() -> integer(). + +time_offset() -> + erlang:nif_error(undefined). + +-spec erlang:time_offset(Unit) -> integer() when + Unit :: time_unit(). + +time_offset(_Unit) -> + erlang:nif_error(undefined). + +-spec erlang:timestamp() -> Timestamp when + Timestamp :: timestamp(). + +timestamp() -> + erlang:nif_error(undefined). + %% prepare_loading/2 -spec erlang:prepare_loading(Module, Code) -> PreparedCode | {error, Reason} when Module :: module(), @@ -1359,8 +1537,53 @@ raise(_Class, _Reason, _Stacktrace) -> %% read_timer/1 -spec erlang:read_timer(TimerRef) -> non_neg_integer() | false when TimerRef :: reference(). -read_timer(_TimerRef) -> - erlang:nif_error(undefined). + +read_timer(TimerRef) -> + read_timer(TimerRef, []). + +%% read_timer/2 +-spec erlang:read_timer(TimerRef, Options) -> non_neg_integer() | false | ok when + TimerRef :: reference(), + Option :: {async, boolean()}, + Options :: [Option]. + +read_timer(TimerRef, Options) -> + try + Async = get_read_timer_options(Options, false), + case erts_internal:access_bif_timer(TimerRef) of + undefined -> + case Async of + true -> + erlang:self() ! {read_timer, TimerRef, false}, + ok; + false -> + false + end; + {BTR, TSrv} -> + case Async of + true -> + TSrv ! {read_timeout, BTR, erlang:self(), + TimerRef, TimerRef}, + ok; + false -> + Req = erlang:make_ref(), + TSrv ! {read_timeout, BTR, erlang:self(), + Req, TimerRef}, + receive + {read_timer, Req, Result} -> + Result + end + end + end + catch + _:_ -> erlang:error(badarg, [TimerRef]) + end. + +get_read_timer_options([], Async) -> + Async; +get_read_timer_options([{async, Bool} | Opts], + _Async) when Bool == true; Bool == false -> + get_read_timer_options(Opts, Bool). %% ref_to_list/1 -spec erlang:ref_to_list(Ref) -> string() when @@ -1406,8 +1629,36 @@ self() -> Dest :: pid() | atom(), Msg :: term(), TimerRef :: reference(). -send_after(_Time, _Dest, _Msg) -> - erlang:nif_error(undefined). + +send_after(0, Dest, Msg) -> + try + true = ((erlang:is_pid(Dest) + andalso erlang:node(Dest) == erlang:node()) + orelse (erlang:is_atom(Dest) + andalso Dest /= undefined)), + try Dest ! Msg catch _:_ -> ok end, + erlang:make_ref() + catch + _:_ -> + erlang:error(badarg, [0, Dest, Msg]) + end; +send_after(Time, Dest, Msg) -> + Now = erlang:monotonic_time(), + try + true = ((erlang:is_pid(Dest) + andalso erlang:node(Dest) == erlang:node()) + orelse (erlang:is_atom(Dest) + andalso Dest /= undefined)), + true = Time > 0, + true = Time < (1 bsl 32), % Maybe lift this restriction... + TO = Now + (erts_internal:time_unit()*Time) div 1000, + {BTR, TSrv, TRef} = erts_internal:create_bif_timer(), + TSrv ! {set_timeout, BTR, Dest, TO, TRef, Msg}, + TRef + catch + _:_ -> + erlang:error(badarg, [Time, Dest, Msg]) + end. %% seq_trace/2 -spec erlang:seq_trace(P1, P2) -> seq_trace_info_returns() | {term(), term(), term(), term(), term()} when @@ -1480,8 +1731,37 @@ split_binary(_Bin, _Pos) -> Dest :: pid() | atom(), Msg :: term(), TimerRef :: reference(). -start_timer(_Time, _Dest, _Msg) -> - erlang:nif_error(undefined). +start_timer(0, Dest, Msg) -> + try + true = ((erlang:is_pid(Dest) + andalso erlang:node(Dest) == erlang:node()) + orelse (erlang:is_atom(Dest) + andalso Dest /= undefined)), + TimerRef = erlang:make_ref(), + _ = try Dest ! {timeout, TimerRef, Msg} catch _:_ -> ok end, + TimerRef + catch + _:_ -> + erlang:error(badarg, [0, Dest, Msg]) + end; +start_timer(Time, Dest, Msg) -> + Now = erlang:monotonic_time(), + try + true = ((erlang:is_pid(Dest) + andalso erlang:node(Dest) == erlang:node()) + orelse (erlang:is_atom(Dest) + andalso Dest /= undefined)), + true = Time > 0, + true = Time < (1 bsl 32), % Maybe lift this restriction... + TO = Now + (erts_internal:time_unit()*Time) div 1000, + {BTR, TSrv, TimerRef} = erts_internal:create_bif_timer(), + TSrv ! {set_timeout, BTR, Dest, TO, TimerRef, + {timeout, TimerRef, Msg}}, + TimerRef + catch + _:_ -> + erlang:error(badarg, [Time, Dest, Msg]) + end. %% suspend_process/2 -spec erlang:suspend_process(Suspendee, OptList) -> boolean() when @@ -1651,7 +1931,7 @@ element(_N, _Tuple) -> %% Not documented -spec erlang:get_module_info(Module, Item) -> ModuleInfo when Module :: atom(), - Item :: module | imports | exports | functions | attributes | compile | native_addresses, + Item :: module | imports | exports | functions | attributes | compile | native_addresses | md5, ModuleInfo :: atom() | [] | [{atom(), arity()}] | [{atom(), term()}] | [{atom(), arity(), integer()}]. get_module_info(_Module, _Item) -> erlang:nif_error(undefined). @@ -2118,6 +2398,8 @@ subtract(_,_) -> (trace_control_word, TCW) -> OldTCW when TCW :: non_neg_integer(), OldTCW :: non_neg_integer(); + (time_offset, finalize) -> OldState when + OldState :: preliminary | final | volatile; %% These are deliberately not documented (internal_cpu_topology, term()) -> term(); (sequential_tracer, pid() | port() | false) -> pid() | port() | false; @@ -2254,6 +2536,8 @@ tuple_to_list(_Tuple) -> (multi_scheduling_blockers) -> [PID :: pid()]; (nif_version) -> string(); (otp_release) -> string(); + (os_monotonic_time_source) -> [{atom(),term()}]; + (os_system_time_source) -> [{atom(),term()}]; (port_count) -> non_neg_integer(); (port_limit) -> pos_integer(); (process_count) -> pos_integer(); @@ -2271,10 +2555,14 @@ tuple_to_list(_Tuple) -> (scheduler_id) -> SchedulerId :: pos_integer(); (schedulers | schedulers_online) -> pos_integer(); (smp_support) -> boolean(); + (start_time) -> integer(); (system_version) -> string(); (system_architecture) -> string(); (threads) -> boolean(); (thread_pool_size) -> non_neg_integer(); + (time_correction) -> true | false; + (time_offset) -> preliminary | final | volatile; + (time_warp_mode) -> no_time_warp | single_time_warp | multi_time_warp; (tolerant_timeofday) -> enabled | disabled; (trace_control_word) -> non_neg_integer(); (update_cpu_info) -> changed | unchanged; @@ -3041,16 +3329,6 @@ integer_to_binary(I0, Base, R0) -> true -> integer_to_binary(I1, Base, R1) end. -%% erlang:flush_monitor_message/2 is for internal use only! -%% -%% erlang:demonitor(Ref, [flush]) traps to -%% erlang:flush_monitor_message(Ref, Res) when -%% it needs to flush a monitor message. -flush_monitor_message(Ref, Res) when erlang:is_reference(Ref), - erlang:is_atom(Res) -> - receive {_, Ref, _, _, _} -> ok after 0 -> ok end, - Res. - -record(cpu, {node = -1, processor = -1, processor_node = -1, |