c回调lua测试

直接上代码

cb.c

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"

static int lua_watch = LUA_REFNIL;
static lua_State *ud = NULL;

void doit() {
    int time=1;
    for (int i=0;i<2;i++) {
        printf(">>> doit sleep %d s start \n",time);
        sleep(time);
        printf(">>> doit sleep over \n");
        lua_State *L = ud;
        lua_rawgeti(L, LUA_REGISTRYINDEX, lua_watch);
        int a=1;
        int b=2;
        int c=3;
        lua_pushinteger(L, a);
        lua_pushinteger(L, b);
        lua_pushinteger(L, c);
        lua_call(L, 3, 0);
    }
}

static int lsetwatch(lua_State *L){
    printf(">>> setwatch \n");
    lua_watch = luaL_ref(L, LUA_REGISTRYINDEX);
    printf(">>> setwatch lua_watch=%d \n",lua_watch);
    ud = L;
    pthread_t tid;
    pthread_create(&tid, NULL, &doit, NULL);
    return 0;