【新增】运行一段lua代码片段,在lua中,代码片段定义为chunk
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107
src/lua_plugin_chunk.c
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107
src/lua_plugin_chunk.c
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/*************************************************************************
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> File Name: lua_plugin_chunk.c
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> Author:
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> Created Time: 2024-08
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> Encoding : UTF-8
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************************************************************************/
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/*************************************************************************
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* 实现代码块相关操作
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* version
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* [ v0.1 ]
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* 08-12
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* 1. 实现函数
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* int lua_chunk_execute;
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************************************************************************/
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#include "lua_plugin_manage_internal.h"
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/*
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* Function: lua_chunk_execute
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* Input: | lua_State * | state | 执行该代码块使用的状态机
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* | int | ref_id | 代码块在状态机中的引用ID
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* | int | pcount | 执行过程中传入的参数个数
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* | struct lua_cdata * | params | 执行过程中传入的参数
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* | int | rcount | 执行结束后返回值的个数
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* | struct lua_cdata * | returns | 执行结束后返回值
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* Output:
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* Return: enum LUA_PLUGIN_RETURN
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* Description: 在lua状态机中执行一段代码块, 执行的代码块需要提前在状态机中完成注册
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* 并已经生成相关的引用ID, 根据该ID进行调用
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*/
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int lua_chunk_execute(
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lua_State *state,
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int ref_id,
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int pcount,
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struct lua_cdata *params,
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int rcount,
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struct lua_cdata *returns)
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{
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if (__glibc_unlikely(!state || ref_id == LUA_REFNIL))
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return PARAM_ERR;
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if ((pcount && !params) || (pcount < 0))
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return PARAM_ERR;
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if ((rcount && !returns) || (rcount < 0))
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return PARAM_ERR;
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#ifdef LUAPLUGIN_BASIC_UNITTEST
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LOGDEBUG("now execute chunk, %p, %d\n", state, ref_id);
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#endif
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/* 需要调用的函数入栈, 由于后续在读取参数个数的时候对栈操作较多, 需要先将函数入栈 */
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lua_rawgeti(state, LUA_REGISTRYINDEX, ref_id);
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if (lua_gettop(state) == 0 || lua_type(state, -1) != LUA_TFUNCTION)
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{
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lua_settop(state, 0);
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return CHUNK_TYPE_NOT_FUNCTION;
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}
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/* 参数入栈 */
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int pushret = 0;
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for (int i = 0; i < pcount; ++i)
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{
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if ((pushret = lua_cdata_push_stack(state, ¶ms[i])))
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{
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lua_settop(state, 0);
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return pushret;
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}
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}
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/* 执行该脚本并记录执行时间 */
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// clock_t start_time, end_time;
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// start_time = clock();
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/* 调用该脚本 or 代码片段 */
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if (lua_pcall(state, pcount, LUA_MULTRET, 0))
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{
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// end_time = clock();
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LOGERROR("run script failed, mess is %s\n", lua_tostring(state, -1));
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/* 仅函数运行过程中出错记入出错记录, 由于参数错误等原因导致的错误不记录 */
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lua_settop(state, 0);
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return CHUNK_RUN_CODE_FAIL;
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}
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// end_time = clock();
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/* 返回值出栈 */
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if (rcount > 0)
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{
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/* 如果rmaxcount为0, 说明在期望中不准备接收返回值, 也不必处理 */
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int count = lua_gettop(state);
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if (count > rcount)
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{
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lua_settop(state, 0);
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return CHUNK_RCOUNT_ERR;
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}
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int pop_ret = 0;
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for (int i = (count - 1); i >= 0; --i)
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{
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if ((pop_ret = lua_cdata_pop_stack(state, &(returns[i]))))
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{
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lua_settop(state, 0);
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return pop_ret;
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}
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}
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}
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lua_settop(state, 0);
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/* TODO: 记录耗时等数据 */
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return SUCCESS;
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}
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