aboutsummaryrefslogtreecommitdiffstats
path: root/lib/dialyzer/src/dialyzer_timing.erl
blob: 759d49abc812a9023d4b83f17cb51ebb6e537d56 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
%% -*- erlang-indent-level: 2 -*-
%%-------------------------------------------------------------------
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2006-2012. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%%
%% %CopyrightEnd%
%%

%%%-------------------------------------------------------------------
%%% File    : dialyzer_timing.erl
%%% Authors : Stavros Aronis <[email protected]>
%%% Description : Timing reports for Dialyzer
%%%-------------------------------------------------------------------

-module(dialyzer_timing).

-export([init/1, start_stamp/2, send_size_info/3, end_stamp/1, stop/1]).

-export_type([timing_server/0]).

-type timing_server() :: pid() | 'none'.

-spec init(boolean() | 'debug') -> timing_server().

init(Active) ->
  case Active of
    true ->
      io:format("\n"),
      spawn_link(fun() -> loop(erlang:monotonic_time(), 0, "") end);
    debug ->
      io:format("\n"),
      spawn_link(fun() -> debug_loop("") end);
    false -> none
  end.

loop(LastNow, Size, Unit) ->
  receive
    {stamp, Msg, Now} ->
      io:format("    ~-10s (+~4.2fs):", [Msg, diff(Now, LastNow)]),
      loop(Now, 0, "");
    {stamp, Now} ->
      SizeStr =
	case Size of
	  0 -> "";
	  _ ->
	    Data = io_lib:format("~p ~s",[Size, Unit]),
	    io_lib:format(" (~12s)",[Data])
	end,
      io:format("~7.2fs~s\n", [diff(Now, LastNow), SizeStr]),
      loop(Now, 0, "");
    {size, NewSize, NewUnit} ->
      loop(LastNow, NewSize, NewUnit);
    {Pid, stop, Now} ->
      io:format("    ~-9s (+~5.2fs)\n", ["",diff(Now, LastNow)]),
      Pid ! ok;
    {Pid, stop} ->
      Pid ! ok
  end.

debug_loop(Phase) ->
  receive
    Message ->
      {Runtime,_} = statistics(wall_clock),
      Procs = erlang:system_info(process_count),
      ProcMem = erlang:memory(total),
      Status = io_lib:format("~12w ~6w ~20w", [Runtime, Procs, ProcMem]),
      case Message of
	{stamp, Msg, _Now} ->
	  io:format("~s ~s_start\n", [Status, Msg]),
	  debug_loop(Msg);
	{stamp, _Now} ->
	  io:format("~s ~s_stop\n", [Status, Phase]),
	  debug_loop("");
	{Pid, stop, _Now} ->
	  Pid ! ok;
	{Pid, stop} ->
	  Pid ! ok;
	_ ->
	  debug_loop(Phase)
      end
  after
    50 ->
      {Runtime,_} = statistics(wall_clock),
      Procs = erlang:system_info(process_count),
      ProcMem = erlang:memory(total),
      Status = io_lib:format("~12w ~6w ~20w", [Runtime, Procs, ProcMem]),
      io:format("~s\n", [Status]),
      debug_loop(Phase)
  end.


-spec start_stamp(timing_server(), string()) -> ok.

start_stamp(none, _) -> ok;
start_stamp(Pid, Msg) ->
  Pid ! {stamp, Msg, erlang:monotonic_time()},
  ok.

-spec end_stamp(timing_server()) -> ok.

end_stamp(none) -> ok;
end_stamp(Pid) ->
  Pid ! {stamp, erlang:monotonic_time()},
  ok.

-spec send_size_info(timing_server(), integer(), string()) -> ok.

send_size_info(none, _, _) -> ok;
send_size_info(Pid, Size, Unit) ->
  Pid ! {size, Size, Unit},
  ok.

-spec stop(timing_server()) -> ok.

stop(none) -> ok;
stop(Pid) ->
  Pid ! {self(), stop, erlang:monotonic_time()},
  receive ok -> ok end.

diff(T2, T1) ->
  (T2-T1) / erlang:convert_time_unit(1, seconds, native).