【新增】运行一段lua代码片段,在lua中,代码片段定义为chunk

This commit is contained in:
niubinghui
2024-08-13 17:21:25 +08:00
parent 2a56bed6fe
commit d3810797af

107
src/lua_plugin_chunk.c Normal file
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@@ -0,0 +1,107 @@
/*************************************************************************
> File Name: lua_plugin_chunk.c
> Author:
> Created Time: 2024-08
> Encoding : UTF-8
************************************************************************/
/*************************************************************************
* 实现代码块相关操作
* version
* [ v0.1 ]
* 08-12
* 1. 实现函数
* int lua_chunk_execute;
************************************************************************/
#include "lua_plugin_manage_internal.h"
/*
* Function: lua_chunk_execute
* Input: | lua_State * | state | 执行该代码块使用的状态机
* | int | ref_id | 代码块在状态机中的引用ID
* | int | pcount | 执行过程中传入的参数个数
* | struct lua_cdata * | params | 执行过程中传入的参数
* | int | rcount | 执行结束后返回值的个数
* | struct lua_cdata * | returns | 执行结束后返回值
* Output:
* Return: enum LUA_PLUGIN_RETURN
* 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
* 并已经生成相关的引用ID, 根据该ID进行调用
*/
int lua_chunk_execute(
lua_State *state,
int ref_id,
int pcount,
struct lua_cdata *params,
int rcount,
struct lua_cdata *returns)
{
if (__glibc_unlikely(!state || ref_id == LUA_REFNIL))
return PARAM_ERR;
if ((pcount && !params) || (pcount < 0))
return PARAM_ERR;
if ((rcount && !returns) || (rcount < 0))
return PARAM_ERR;
#ifdef LUAPLUGIN_BASIC_UNITTEST
LOGDEBUG("now execute chunk, %p, %d\n", state, ref_id);
#endif
/* 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 */
lua_rawgeti(state, LUA_REGISTRYINDEX, ref_id);
if (lua_gettop(state) == 0 || lua_type(state, -1) != LUA_TFUNCTION)
{
lua_settop(state, 0);
return CHUNK_TYPE_NOT_FUNCTION;
}
/* 参数入栈 */
int pushret = 0;
for (int i = 0; i < pcount; ++i)
{
if ((pushret = lua_cdata_push_stack(state, &params[i])))
{
lua_settop(state, 0);
return pushret;
}
}
/* 执行该脚本并记录执行时间 */
// clock_t start_time, end_time;
// start_time = clock();
/* 调用该脚本 or 代码片段 */
if (lua_pcall(state, pcount, LUA_MULTRET, 0))
{
// end_time = clock();
LOGERROR("run script failed, mess is %s\n", lua_tostring(state, -1));
/* 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 */
lua_settop(state, 0);
return CHUNK_RUN_CODE_FAIL;
}
// end_time = clock();
/* 返回值出栈 */
if (rcount > 0)
{
/* 如果rmaxcount为0, 说明在期望中不准备接收返回值, 也不必处理 */
int count = lua_gettop(state);
if (count > rcount)
{
lua_settop(state, 0);
return CHUNK_RCOUNT_ERR;
}
int pop_ret = 0;
for (int i = (count - 1); i >= 0; --i)
{
if ((pop_ret = lua_cdata_pop_stack(state, &(returns[i]))))
{
lua_settop(state, 0);
return pop_ret;
}
}
}
lua_settop(state, 0);
/* TODO: 记录耗时等数据 */
return SUCCESS;
}