请问string.find无法jit，怎样修改？

javactt · 2016-06-28T08:02:59+00:00

Hello在 2016年6月27日下午4:59，Miracle <maxia...@gmail.com>写道：Hello，./samples/ng...

请问string.find无法jit，怎样修改？

javactt

nginx version: openresty/1.9.15.1

lua代码：

1 function explode ( _str,seperator )

2 local pos, arr = 0, {}

3 for st, sp in function() return string.find( _str, seperator, pos, true ) end do

4 table.insert( arr, string.sub( _str, pos, st-1 ) )

5 pos = sp + 1

6 end

7 table.insert( arr, string.sub( _str, pos ) )

8 return arr

9 end

函数调用时，seperator为普通字符，看http://wiki.luajit.org/NYI#libraries_string-library ：

string.find

2.1 partial

Only fixed string searches (no patterns).

/tmp/jit.log:
[TRACE --- imgresize.lua:1 -- NYI: bytecode 51 at imgresize.lua:3]

[TRACE --- imgresize.lua:3 -- leaving loop in root trace]

[TRACE --- imgresize.lua:1 -- NYI: bytecode 51 at imgresize.lua:9]

[TRACE --- imgresize.lua:1 -- NYI: bytecode 51 at imgresize.lua:3]

[TRACE --- imgresize.lua:1 -- NYI: bytecode 51 at imgresize.lua:9]

[TRACE --- imgresize.lua:3 -- leaving loop in root trace]

./luajit/bin/luajit nginx/lua/ljbc.lua 51

opcode 51:

FNEW

doujiang24

额

你是如何判断是 string.find 无法 jit 的呢

opcode 51: FNEW，是指的：function() end

2016-06-28 8:02 GMT+08:00 ty javac <jav...@gmail.com>:

nginx version: openresty/1.9.15.1

LuaJIT 2.1.0-beta2 -- Copyright (C) 2005-2016 Mike Pall. http://luajit.org/

lua代码：

1 function explode ( _str,seperator )
2 local pos, arr = 0, {}
3 for st, sp in function() return string.find( _str, seperator, pos, true ) end do
4 table.insert( arr, string.sub( _str, pos, st-1 ) )
5 pos = sp + 1
6 end
7 table.insert( arr, string.sub( _str, pos ) )
8 return arr
9 end

函数调用时，seperator为普通字符，看http://wiki.luajit.org/NYI#libraries_string-library ：
string.find 2.1 partial Only fixed string searches (no patterns).

/tmp/jit.log:
[TRACE --- imgresize.lua:1 -- NYI: bytecode 51 at imgresize.lua:3]
[TRACE --- imgresize.lua:3 -- leaving loop in root trace]
[TRACE --- imgresize.lua:1 -- NYI: bytecode 51 at imgresize.lua:9]
[TRACE --- imgresize.lua:1 -- NYI: bytecode 51 at imgresize.lua:3]
[TRACE --- imgresize.lua:1 -- NYI: bytecode 51 at imgresize.lua:9]
[TRACE --- imgresize.lua:3 -- leaving loop in root trace]

./luajit/bin/luajit nginx/lua/ljbc.lua 51
opcode 51:
FNEW

--