codepad

Language:

#include <lua.h>
#include <lauxlib.h>
#include <stdio.h>

int lproxycall(lua_State * L) {
  lua_CFunction f = (lua_CFunction)lua_touserdata(L, 1);
  lua_remove(L, 1);
  return f(L);
}

int myluacpcall(lua_State * L, lua_CFunction func,
                int nargs, int nresults, int errfunc)
{
  lua_pushvalue(L, 1);
  lua_insert(L, -nargs-1);
  lua_pushlightuserdata(L, func);
  lua_insert(L, -nargs-1);
  return lua_pcall(L, nargs+1, nresults, errfunc);
}

int test(lua_State * L) {
  // printf("1\n");
  lua_pushnumber(L, lua_tonumber(L, -1) + 1); return 1;
  //return 0;
}

int main() {
  int i;
  lua_State * L = luaL_newstate();
  if (L == NULL) return 1;

/* warning: these might raise */
  lua_pushcfunction(L, lproxycall);
  lua_pushcfunction(L, test);

for(i=0; i<10000000; i++) {
    // method #1 - 17 s
    // if (lua_cpcall(L, test, 0) != 0) {
    //  printf("error:%s\n", lua_tostring(L, -1));
    //  lua_pop(L, 1);
    // }

// method #2 - 2.5 s
    // lua_pushvalue(L, 2);
    // lua_pcall(L, 0,0,0);

// method #3 - 3.3 s
    //lua_pushnumber(L, 4);
    if (myluacpcall(L, test, 0, 0, 0) != 0) {  // or 1,1,0
      printf("error:%s\n", lua_tostring(L, -1));
      lua_pop(L, 1);
    }
    //printf("%f\n", lua_tonumber(L, -1));
    //lua_pop(L, 1);
  }

return 0;
}

Private [?]

Run code