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Bug fix for issue in new LUA memory hook scheme where the callbacks get unregistered from the x6502 while still running. Fixes #693

This commit is contained in:
harry 2024-01-27 00:39:23 -05:00
parent a02ae8d3e0
commit fe0496a6cf
1 changed files with 27 additions and 7 deletions
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32
src/lua-engine.cpp
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@ -245,6 +245,7 @@ extern void WinLuaOnStop(intptr_t hDlgAsInt);
static lua_State *L;
static int luaexiterrorcount = 8;
static int luaCallbackErrorCounter = 0;
// Are we running any code right now?
static char *luaScriptName = NULL;
@ -2096,7 +2097,7 @@ static const char *CallLuaTraceback(lua_State *L) {
}
void HandleCallbackError(lua_State* L)
void HandleCallbackError(lua_State* L, bool stop)
{
//if(L->errfunc || L->errorJmp)
// luaL_error(L, "%s", lua_tostring(L,-1));
@ -2118,8 +2119,14 @@ void HandleCallbackError(lua_State* L)
fprintf(stderr, "Lua thread bombed out: %s\n", errmsg);
#endif
// If stop flag is true, destruct the lua engine immediately.
// else it will be destructed later at the next frame boundary when callback errors are detected.
if (stop)
{
FCEU_LuaStop();
}
luaCallbackErrorCounter++;
}
}
@ -2256,7 +2263,7 @@ static void CallRegisteredLuaMemHook_LuaMatch(unsigned int address, int size, un
if(/*info.*/ numMemHooks)
{
// lua_State* L = info.L;
if(L/* && !info.panic*/)
if( (L != nullptr) && (luaCallbackErrorCounter == 0) )
{
#ifdef USE_INFO_STACK
infoStack.insert(infoStack.begin(), &info);
@ -2280,7 +2287,8 @@ static void CallRegisteredLuaMemHook_LuaMatch(unsigned int address, int size, un
//RefreshScriptSpeedStatus();
if (errorcode)
{
HandleCallbackError(L);
// Defer Lua destruction until x6502 memory hooks can fully return.
HandleCallbackError(L, false);
//int uid = iter->first;
//HandleCallbackError(L,info,uid,true);
}
@ -2329,7 +2337,7 @@ void CallRegisteredLuaFunctions(LuaCallID calltype)
{
errorcode = lua_pcall(L, 0, 0, 0);
if (errorcode)
HandleCallbackError(L);
HandleCallbackError(L, true);
}
else
{
@ -6318,7 +6326,7 @@ void CallExitFunction()
}
if (errorcode)
HandleCallbackError(L);
HandleCallbackError(L, true);
}
void FCEU_LuaFrameBoundary()
@ -6326,8 +6334,19 @@ void FCEU_LuaFrameBoundary()
//printf("Lua Frame\n");
// HA!
if (!L || !luaRunning)
if (L == nullptr)
{
return;
}
if (luaCallbackErrorCounter > 0)
{
FCEU_LuaStop();
return;
}
if (!luaRunning)
{
return;
}
// Our function needs calling
lua_settop(L,0);
@ -6426,6 +6445,7 @@ int FCEU_LoadLuaCode(const char *filename, const char *arg)
//Reinit the error count
luaexiterrorcount = 8;
luaCallbackErrorCounter = 0;
if (!L) {