summaryrefslogtreecommitdiff
path: root/tex/context/base/trac-inf.lua
blob: 802f2e6672e02ab817ee792b56611e528929295f (plain)
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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
if not modules then modules = { } end modules ['trac-inf'] = {
    version   = 1.001,
    comment   = "companion to trac-inf.mkiv",
    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
    copyright = "PRAGMA ADE / ConTeXt Development Team",
    license   = "see context related readme files"
}

-- As we want to protect the global tables, we no longer store the timing
-- in the tables themselves but in a hidden timers table so that we don't
-- get warnings about assignments. This is more efficient than using rawset
-- and rawget.

local type, tonumber, select = type, tonumber, select
local format, lower = string.format, string.lower
local concat = table.concat
local clock = os.gettimeofday or os.clock -- should go in environment

local setmetatableindex = table.setmetatableindex
local serialize         = table.serialize
local formatters        = string.formatters

statistics              = statistics or { }
local statistics        = statistics

statistics.enable       = true
statistics.threshold    = 0.01

local statusinfo, n, registered, timers = { }, 0, { }, { }

setmetatableindex(timers,function(t,k)
    local v = { timing = 0, loadtime = 0 }
    t[k] = v
    return v
end)

local function hastiming(instance)
    return instance and timers[instance]
end

local function resettiming(instance)
    timers[instance or "notimer"] = { timing = 0, loadtime = 0 }
end

local function starttiming(instance)
    local timer = timers[instance or "notimer"]
    local it = timer.timing or 0
    if it == 0 then
        timer.starttime = clock()
        if not timer.loadtime then
            timer.loadtime = 0
        end
    end
    timer.timing = it + 1
end

local function stoptiming(instance)
    local timer = timers[instance or "notimer"]
    local it = timer.timing
    if it > 1 then
        timer.timing = it - 1
    else
        local starttime = timer.starttime
        if starttime then
            local stoptime = clock()
            local loadtime = stoptime - starttime
            timer.stoptime = stoptime
            timer.loadtime = timer.loadtime + loadtime
            timer.timing = 0
            return loadtime
        end
    end
    return 0
end

local function elapsed(instance)
    if type(instance) == "number" then
        return instance or 0
    else
        local timer = timers[instance or "notimer"]
        return timer and timer.loadtime or 0
    end
end

local function elapsedtime(instance)
    return format("%0.3f",elapsed(instance))
end

local function elapsedindeed(instance)
    return elapsed(instance) > statistics.threshold
end

local function elapsedseconds(instance,rest) -- returns nil if 0 seconds
    if elapsedindeed(instance) then
        return format("%0.3f seconds %s", elapsed(instance),rest or "")
    end
end

statistics.hastiming      = hastiming
statistics.resettiming    = resettiming
statistics.starttiming    = starttiming
statistics.stoptiming     = stoptiming
statistics.elapsed        = elapsed
statistics.elapsedtime    = elapsedtime
statistics.elapsedindeed  = elapsedindeed
statistics.elapsedseconds = elapsedseconds

-- general function .. we might split this module

function statistics.register(tag,fnc)
    if statistics.enable and type(fnc) == "function" then
        local rt = registered[tag] or (#statusinfo + 1)
        statusinfo[rt] = { tag, fnc }
        registered[tag] = rt
        if #tag > n then n = #tag end
    end
end

local report = logs.reporter("mkiv lua stats")

function statistics.show()
    if statistics.enable then
        -- this code will move
        local register = statistics.register
        register("used platform", function()
            return format("%s, type: %s, binary subtree: %s",os.platform or "unknown",os.type or "unknown", environment.texos or "unknown")
        end)
        register("luatex banner", function()
            return lower(status.banner)
        end)
        register("control sequences", function()
            return format("%s of %s + %s", status.cs_count, status.hash_size,status.hash_extra)
        end)
        register("callbacks", function()
            local total, indirect = status.callbacks or 0, status.indirect_callbacks or 0
            return format("%s direct, %s indirect, %s total", total-indirect, indirect, total)
        end)
        if jit then
            local status = { jit.status() }
            if status[1] then
                register("luajit status", function()
                    return concat(status," ",2)
                end)
            end
        end
        -- so far
     -- collectgarbage("collect")
        register("current memory usage",statistics.memused)
        register("runtime",statistics.runtime)
        logs.newline() -- initial newline
        for i=1,#statusinfo do
            local s = statusinfo[i]
            local r = s[2]()
            if r then
                report("%s: %s",s[1],r)
            end
        end
     -- logs.newline() -- final newline
        statistics.enable = false
    end
end

function statistics.memused() -- no math.round yet -)
    local round = math.round or math.floor
    return format("%s MB (ctx: %s MB)",round(collectgarbage("count")/1000), round(status.luastate_bytes/1000000))
end

starttiming(statistics)

function statistics.formatruntime(runtime) -- indirect so it can be overloaded and
    return format("%s seconds", runtime)   -- indeed that happens in cure-uti.lua
end

function statistics.runtime()
    stoptiming(statistics)
    return statistics.formatruntime(elapsedtime(statistics))
end

local report = logs.reporter("system")

function statistics.timed(action)
    starttiming("run")
    action()
    stoptiming("run")
    report("total runtime: %s seconds",elapsedtime("run"))
end

-- goodie

function statistics.tracefunction(base,tag,...)
    for i=1,select("#",...) do
        local name = select(i,...)
        local stat = { }
        local func = base[name]
        setmetatableindex(stat,function(t,k) t[k] = 0 return 0 end)
        base[name] = function(n,k,v) stat[k] = stat[k] + 1 return func(n,k,v) end
        statistics.register(formatters["%s.%s"](tag,name),function() return serialize(stat,"calls") end)
    end
end

-- where, not really the best spot for this:

commands = commands or { }

function commands.resettimer(name)
    resettiming(name or "whatever")
    starttiming(name or "whatever")
end

function commands.elapsedtime(name)
    stoptiming(name or "whatever")
    context(elapsedtime(name or "whatever"))
end