dellingr 0.4.0

An embeddable, pure-Rust Lua VM with precise instruction-cost accounting
Documentation 
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

-- brokkr verdict workload derived from examples/calls/many_literals.lua
-- (see that file for the probe rationale: per-call literal re-interning).
-- Same kernel, repeated K times per _bench call so one call is ~100ms and
-- the standalone run takes a few seconds in a release build.

local function classify(code)
    if code == 0 then return "ok" end
    if code == 1 then return "err_perm" end
    if code == 2 then return "err_noent" end
    if code == 3 then return "err_srch" end
    if code == 4 then return "err_intr" end
    if code == 5 then return "err_io" end
    if code == 6 then return "err_nxio" end
    if code == 7 then return "err_2big" end
    if code == 8 then return "err_noexec" end
    if code == 9 then return "err_badf" end
    if code == 10 then return "err_child" end
    if code == 11 then return "err_again" end
    if code == 12 then return "err_nomem" end
    if code == 13 then return "err_acces" end
    if code == 14 then return "err_fault" end
    if code == 15 then return "err_notblk" end
    if code == 16 then return "err_busy" end
    if code == 17 then return "err_exist" end
    if code == 18 then return "err_xdev" end
    if code == 19 then return "err_nodev" end
    if code == 20 then return "err_notdir" end
    if code == 21 then return "err_isdir" end
    if code == 22 then return "err_inval" end
    if code == 23 then return "err_nfile" end
    if code == 24 then return "err_mfile" end
    if code == 25 then return "err_notty" end
    if code == 26 then return "err_txtbsy" end
    if code == 27 then return "err_fbig" end
    if code == 28 then return "err_nospc" end
    if code == 29 then return "err_spipe" end
    if code == 30 then return "err_rofs" end
    return "unknown"
end

local function kernel()
    local hits = 0
    for i = 1, 1000 do
        if classify(0) == "ok" then
            hits = hits + 1
        end
    end
    return hits
end

local K = 125

function _bench()
    local acc = 0
    for _ = 1, K do
        acc = acc + kernel()
    end
    return acc
end

for i = 1, 30 do _bench() end
print("bench/many_literals: true")