removed non-operational lua console code (nw)

This commit is contained in:
Miodrag Milanovic 2016-11-03 11:33:48 +01:00
parent 008ecbfd5c
commit e612bea1cb
3 changed files with 0 additions and 212 deletions

View File

@ -34,22 +34,6 @@
// LUA ENGINE
//**************************************************************************
#if !defined(LUA_PROMPT)
#define LUA_PROMPT "> "
#define LUA_PROMPT2 ">> "
#endif
#if !defined(LUA_MAXINPUT)
#define LUA_MAXINPUT 512
#endif
#define lua_readline(b,p) \
(fputs(p, stdout), fflush(stdout), /* show prompt */ \
fgets(b, LUA_MAXINPUT, stdin) != nullptr) /* get line */
#define luai_writestring(s,l) fwrite((s), sizeof(char), (l), stdout)
#define luai_writeline() (luai_writestring("\n", 1), fflush(stdout))
extern "C" {
int luaopen_zlib(lua_State *L);
int luaopen_lfs(lua_State *L);
@ -211,190 +195,6 @@ namespace sol
}
}
struct msg {
std::string text;
int ready;
std::string response;
int status;
int done;
} msg;
static std::mutex g_mutex;
static lua_State *globalL = nullptr;
static void lstop(lua_State *L, lua_Debug *ar)
{
(void)ar; /* unused arg. */
lua_sethook(L, nullptr, 0, 0);
luaL_error(L, "interrupted!");
}
static void laction(int i)
{
signal(i, SIG_DFL); /* if another SIGINT happens before lstop,
terminate process (default action) */
lua_sethook(globalL, lstop, LUA_MASKCALL | LUA_MASKRET | LUA_MASKCOUNT, 1);
}
static int traceback (lua_State *L)
{
const char *msg = lua_tostring(L, 1);
if (msg)
luaL_traceback(L, L, msg, 1);
else if (!lua_isnoneornil(L, 1))
{ /* is there an error object? */
if (!luaL_callmeta(L, 1, "__tostring")) /* try its 'tostring' metamethod */
lua_pushliteral(L, "(no error message)");
}
return 1;
}
int lua_engine::docall(int narg, int nres)
{
int status;
int base = lua_gettop(m_lua_state) - narg; /* function index */
lua_pushcfunction(m_lua_state, traceback); /* push traceback function */
lua_insert(m_lua_state, base); /* put it under chunk and args */
globalL = m_lua_state; /* to be available to 'laction' */
signal(SIGINT, laction);
status = lua_pcall(m_lua_state, narg, nres, base);
signal(SIGINT, SIG_DFL);
lua_remove(m_lua_state, base); /* remove traceback function */
return status;
}
void lua_engine::serve_lua()
{
osd_sleep(osd_ticks_per_second() / 1000 * 50);
printf("%s v%s\n%s\n%s\n\n", emulator_info::get_appname(),build_version,emulator_info::get_copyright_info(),LUA_COPYRIGHT);
fflush(stdout);
char buff[LUA_MAXINPUT];
std::string oldbuff;
const char *b = LUA_PROMPT;
do {
// Wait for input
fputs(b, stdout); fflush(stdout); /* show prompt */
fgets(buff, LUA_MAXINPUT, stdin);
// Create message
{
std::lock_guard<std::mutex> lock(g_mutex);
if (msg.ready == 0) {
msg.text = oldbuff;
if (oldbuff.length() != 0) msg.text.append("\n");
msg.text.append(buff);
msg.ready = 1;
msg.done = 0;
}
}
// Wait for response
int done;
do {
osd_sleep(osd_ticks_per_second() / 1000);
std::lock_guard<std::mutex> lock(g_mutex);
done = msg.done;
} while (done==0);
// Do action on client side
{
std::lock_guard<std::mutex> lock(g_mutex);
if (msg.status == -1) {
b = LUA_PROMPT2;
oldbuff = msg.response;
}
else {
b = LUA_PROMPT;
oldbuff = "";
}
msg.done = 0;
}
} while (1);
}
static void *serve_lua(void *param)
{
lua_engine *engine = (lua_engine *)param;
engine->serve_lua();
return nullptr;
}
void lua_engine::periodic_check()
{
std::lock_guard<std::mutex> lock(g_mutex);
if (msg.ready == 1) {
lua_settop(m_lua_state, 0);
int status = luaL_loadbuffer(m_lua_state, msg.text.c_str(), msg.text.length(), "=stdin");
if (incomplete(status)==0) /* cannot try to add lines? */
{
if (status == LUA_OK) status = docall(0, LUA_MULTRET);
report(status);
if (status == LUA_OK && lua_gettop(m_lua_state) > 0) /* any result to print? */
{
luaL_checkstack(m_lua_state, LUA_MINSTACK, "too many results to print");
lua_getglobal(m_lua_state, "print");
lua_insert(m_lua_state, 1);
if (lua_pcall(m_lua_state, lua_gettop(m_lua_state) - 1, 0, 0) != LUA_OK)
lua_writestringerror("%s\n", lua_pushfstring(m_lua_state,
"error calling " LUA_QL("print") " (%s)",
lua_tostring(m_lua_state, -1)));
}
}
else
{
status = -1;
}
msg.status = status;
msg.response = msg.text;
msg.text = "";
msg.ready = 0;
msg.done = 1;
}
}
int lua_engine::report(int status) {
if (status != LUA_OK && !lua_isnil(m_lua_state, -1))
{
const char *msg = lua_tostring(m_lua_state, -1);
if (msg == nullptr) msg = "(error object is not a string)";
lua_writestringerror("%s\n", msg);
lua_pop(m_lua_state, 1);
/* force a complete garbage collection in case of errors */
lua_gc(m_lua_state, LUA_GCCOLLECT, 0);
}
return status;
}
/* mark in error messages for incomplete statements */
#define EOFMARK "<eof>"
#define marklen (sizeof(EOFMARK)/sizeof(char) - 1)
int lua_engine::incomplete(int status)
{
if (status == LUA_ERRSYNTAX)
{
size_t lmsg;
const char *msg = lua_tolstring(m_lua_state, -1, &lmsg);
if (lmsg >= marklen && strcmp(msg + lmsg - marklen, EOFMARK) == 0)
{
lua_pop(m_lua_state, 1);
return 1;
}
}
return 0; /* else... */
}
void lua_engine::start_console()
{
std::thread th(::serve_lua, this);
th.detach();
}
//-------------------------------------------------
// mem_read - templated memory readers for <sign>,<size>
// -> manager:machine().devices[":maincpu"].spaces["program"]:read_i8(0xC000)
@ -729,9 +529,6 @@ lua_engine::lua_engine()
sol()["package"]["preload"]["lfs"] = &luaopen_lfs;
lua_gc(m_lua_state, LUA_GCRESTART, 0);
msg.ready = 0;
msg.status = 0;
msg.done = 0;
}
//-------------------------------------------------

View File

@ -32,12 +32,9 @@ public:
~lua_engine();
void initialize();
void start_console();
void load_script(const char *filename);
void load_string(const char *value);
void serve_lua();
void periodic_check();
bool frame_hook();
void menu_populate(const std::string &menu, std::vector<std::tuple<std::string, std::string, std::string>> &menu_list);
@ -116,8 +113,6 @@ private:
running_machine &machine() const { return *m_machine; }
void update_machine();
void on_machine_prestart();
void on_machine_start();
void on_machine_stop();
@ -157,9 +152,6 @@ private:
void close();
int report(int status);
int incomplete(int status) ;
int docall(int narg, int nres);
void run(sol::load_result res);
};

View File

@ -326,7 +326,6 @@ void emulator_info::draw_user_interface(running_machine& machine)
void emulator_info::periodic_check()
{
mame_machine_manager::instance()->lua()->periodic_check();
}
bool emulator_info::frame_hook()