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我正在使用LuaJIT,並且運行這個代碼時出現了「太多的回調」異常。我知道可以生成的c回調數量有限制,但據我所知,這應該只會產生一個回調...對嗎?爲什麼LuaJIT會從這個簡單的代碼中產生「太多的回調錯誤」?
ffi = require('ffi')
ffi.cdef([[typedef double cpFloat;
typedef struct cpSpace cpSpace;
typedef struct cpBody cpBody;
cpSpace* cpSpaceNew(void);
cpBody* cpBodyNew(cpFloat mass, cpFloat moment);
cpBody* cpSpaceAddBody(cpSpace *space, cpBody *body);
typedef void (*cpSpaceBodyIteratorFunc)(cpBody *body, void *data);
void cpSpaceEachBody(cpSpace *space, cpSpaceBodyIteratorFunc func, void *data);
]])
chipmunk = ffi.load("chipmunk")
space = chipmunk.cpSpaceNew()
body = chipmunk.cpBodyNew(10, 100)
chipmunk.cpSpaceAddBody(space, body)
drawBody = function(body, x) end
CALL_COUNT = 5000
for i = 1, CALL_COUNT do
chipmunk.cpSpaceEachBody(space, drawBody, nil)
end
如果CALL_COUNT減少到500,它的工作原理沒有錯誤。
異常如下:
Error: main.lua:25: too many callbacks
stack traceback:
[C]: in function 'cpSpaceEachBody'
mainmoon.lua:25: in main chunk
[C]: in function 'require'
main.lua:1: in main chunk
[C]: in function 'require'
[string "boot.lua"]:374: in function <[string "boot.lua"]:244>
[C]: in function 'xpcall'
語境:我整合與花栗鼠Mac OS X上
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