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[Lua] Add LuaJIT support (#6584)

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* [Lua] Add LuaJIT support

Here is the output of LuaTest.sh:

Run with LuaJIT:
built 100 512-byte flatbuffers in 0.16sec: 0.63/msec, 0.31MB/sec
built 1000 512-byte flatbuffers in 0.08sec: 12.06/msec, 5.89MB/sec
built 10000 512-byte flatbuffers in 0.80sec: 12.44/msec, 6.07MB/sec
built 10000 512-byte flatbuffers in 0.33sec: 30.58/msec, 14.93MB/sec
traversed 100 592-byte flatbuffers in 0.04sec: 2.51/msec, 1.42MB/sec
traversed 1000 592-byte flatbuffers in 0.03sec: 31.52/msec, 17.79MB/sec
traversed 10000 592-byte flatbuffers in 0.21sec: 48.77/msec, 27.53MB/sec
Run with Lua 5.3:
built 100 512-byte flatbuffers in 0.02sec: 5.44/msec, 2.66MB/sec
built 1000 512-byte flatbuffers in 0.17sec: 5.74/msec, 2.80MB/sec
built 10000 512-byte flatbuffers in 1.75sec: 5.72/msec, 2.79MB/sec
built 10000 512-byte flatbuffers in 1.38sec: 7.26/msec, 3.55MB/sec
traversed 100 592-byte flatbuffers in 0.00sec: 27.64/msec, 15.60MB/sec
traversed 1000 592-byte flatbuffers in 0.03sec: 30.46/msec, 17.20MB/sec
traversed 10000 592-byte flatbuffers in 0.34sec: 29.62/msec, 16.72MB/sec

* [Lua] Better usage description

* update according to the review
This commit is contained in:
罗泽轩
2021-05-01 01:38:16 +08:00
committed by GitHub
parent 8fa3dfdb5d
commit d3cd78a87c
9 changed files with 253 additions and 26 deletions
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7
lua/flatbuffers/builder.lua
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@@ -1,6 +1,7 @@
local N = require("flatbuffers.numTypes")
local ba = require("flatbuffers.binaryarray")
local compat = require("flatbuffers.compat")
local string_unpack = compat.string_unpack
local m = {}
@@ -34,7 +35,7 @@ local function vtableEqual(a, objectStart, b)
end
for i, elem in ipairs(a) do
local x = string.unpack(VOffsetT.packFmt, b, 1 + (i - 1) * 2)
local x = string_unpack(VOffsetT.packFmt, b, 1 + (i - 1) * 2)
if x ~= 0 or elem ~= 0 then
local y = objectStart - elem
if x ~= y then
@@ -119,7 +120,7 @@ function mt:WriteVtable()
local vt2Offset = self.vtables[i]
local vt2Start = #self.bytes - vt2Offset
local vt2lenstr = self.bytes:Slice(vt2Start, vt2Start+1)
local vt2Len = string.unpack(VOffsetT.packFmt, vt2lenstr, 1)
local vt2Len = string_unpack(VOffsetT.packFmt, vt2lenstr, 1)
local metadata = VtableMetadataFields * 2
local vt2End = vt2Start + vt2Len
@@ -210,7 +211,7 @@ function mt:Prep(size, additionalBytes)
local h = self.head
local k = #self.bytes - h + additionalBytes
local alignsize = ((~k) + 1) & (size - 1) -- getAlignSize(k, size)
local alignsize = getAlignSize(k, size)
local desiredSize = alignsize + size + additionalBytes