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khanat-opennel-code/code/nel/src/gui/lua_helper.cpp

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merging gui editor repo.
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// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
fixes #31 Luabind can't be found Added PCH support to NeL GUI
2013-03-24 19:16:23 +00:00
#include "stdpch.h"
merging gui editor repo.
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#include "nel/gui/lua_helper.h"
#include "nel/misc/file.h"
#ifdef LUA_NEVRAX_VERSION
#include "lua_ide_dll_nevrax/include/lua_ide_dll/ide_interface.h" // external debugger
#endif
#include "nel/gui/lua_loadlib.h"
// to get rid of you_must_not_use_assert___use_nl_assert___read_debug_h_file messages
#include <cassert>
#ifdef assert
#undef assert
#endif
#ifdef NL_DEBUG
#define assert(x) nlassert(x)
#else
#define assert(x)
#endif
#include <luabind/luabind.hpp>
#include <nel/misc/algo.h>
#include <nel/misc/path.h>
#ifdef NL_OS_WINDOWS
#include <Windows.h>
#endif
using namespace std;
using namespace NLMISC;
namespace NLGUI
{
namespace LuaHelperStuff
{
void formatLuaStackContext( std::string &stackContext )
{
stackContext = std::string( "@{FC8A}" ).append( stackContext ).append( "@{FC8F} " );
}
std::string formatLuaErrorSysInfo( const std::string &error )
{
return std::string( "@{FC8F}" ).append( error );
}
std::string formatLuaErrorNlWarn( const std::string &error )
{
// Remove color tags (see formatLuaErrorSC())
std::string ret = error;
strFindReplace( ret, "@{FC8A}", "" );
strFindReplace( ret, "@{FC8F}", "" );
return ret;
}
}
// ***************************************************************************
const char *CLuaState::_NELSmallScriptTableName= "NELSmallScriptTable";
uint CLuaStackChecker::_ExceptionContextCounter = 0;
// ***************************************************************************
void CLuaStackChecker::incrementExceptionContextCounter()
{
//H_AUTO(Lua_CLuaStackChecker_incrementExceptionContextCounter)
++ _ExceptionContextCounter;
}
// ***************************************************************************
void CLuaStackChecker::decrementExceptionContextCounter()
{
//H_AUTO(Lua_CLuaStackChecker_decrementExceptionContextCounter)
nlassert(_ExceptionContextCounter > 0);
-- _ExceptionContextCounter;
}
#ifdef LUA_NEVRAX_VERSION
ILuaIDEInterface *LuaDebuggerIDE = NULL;
static bool LuaDebuggerVisible = false;
#endif
#ifdef NL_OS_WINDOWS
HMODULE LuaDebuggerModule = 0;
#endif
void luaDebuggerMainLoop()
{
#ifdef LUA_NEVRAX_VERSION
if (!LuaDebuggerIDE) return;
if (!LuaDebuggerVisible)
{
LuaDebuggerIDE->showDebugger(true);
LuaDebuggerIDE->expandProjectTree();
LuaDebuggerIDE->sortFiles();
LuaDebuggerVisible = true;
}
LuaDebuggerIDE->doMainLoop();
#endif
}
static std::allocator<uint8> l_stlAlloc;
static void l_free_func(void *block, int oldSize)
{
l_stlAlloc.deallocate((uint8 *) block, oldSize);
}
static void *l_realloc_func(void *b, int os, int s)
{
if (os == s) return b;
void *newB = l_stlAlloc.allocate(s);
memcpy(newB, b, std::min(os, s));
l_free_func(b, os);
return newB;
}
const int MinGCThreshold = 128; // min value at which garbage collector will be triggered (in kilobytes)
// ***************************************************************************
CLuaState::CLuaState( bool debugger )
{
_State = NULL;
#ifdef LUA_NEVRAX_VERSION
_GCThreshold = MinGCThreshold;
#endif
#ifdef NL_OS_WINDOWS
if( debugger )
{
#ifndef LUA_NEVRAX_VERSION
static bool warningShown = false;
if (!warningShown)
{
nldebug( "Lua debugger was asked, but the static lua library against which the client was linked is too old. Please update to lua-5.0.2_nevrax. Debugging won't be available!" );
//MessageBox (NULL, "Lua debugger was asked, but the static lua library against which the client was linked is too old. Please update to lua-5.0.2_nevrax. Debugging won't be available!", "Lua support", MB_OK);
warningShown = true;
}
#else
nlassert(LuaDebuggerIDE == NULL); // for now, only one debugger supported...
#ifdef NL_DEBUG
LuaDebuggerModule = ::LoadLibrary("lua_ide2_dll_d.dll");
#else
LuaDebuggerModule = ::LoadLibrary("lua_ide2_dll_r.dll");
#endif
if (LuaDebuggerModule)
{
TGetLuaIDEInterfaceVersion getVersion = (TGetLuaIDEInterfaceVersion) GetProcAddress(LuaDebuggerModule, "GetLuaIDEInterfaceVersion");
nlassert(getVersion);
int dllInterfaceVersion = getVersion();
if (dllInterfaceVersion > LUA_IDE_INTERFACE_VERSION)
{
MessageBox (NULL, "Lua debugger interface is newer than the application. Debugging will be disabled. Please update your client", "Lua support", MB_OK);
}
else if (dllInterfaceVersion < LUA_IDE_INTERFACE_VERSION)
{
MessageBox (NULL, "Lua debugger interface is too old. Lua debugging will be disabled. Please ask for a more recent dll.", "Lua support", MB_OK);
}
else
{
TGetLuaIDEInterface getter = (TGetLuaIDEInterface) GetProcAddress(LuaDebuggerModule, "GetLuaIDEInterface");
nlassert(getter);
LuaDebuggerIDE = getter();
LuaDebuggerIDE->prepareDebug("save\\___external_debug.lpr", l_realloc_func, l_free_func, Driver->getDisplay());
_State = LuaDebuggerIDE->getLuaState();
}
}
#endif
}
#endif
if (!_State)
{
#ifdef LUA_NEVRAX_VERSION
_State = lua_open(l_realloc_func, l_free_func);
Fixed: lua_open() doesn't exist with Lua 5.2
2013-07-24 16:47:50 +00:00
#elif defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 501
_State = luaL_newstate();
merging gui editor repo.
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#else
_State = lua_open();
#endif
nlassert(_State);
}
// *** Load base libs
{
CLuaStackChecker lsc(this);
#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 501
luaL_openlibs(_State);
#else
luaopen_base (_State);
luaopen_table (_State);
luaopen_io (_State);
luaopen_string (_State);
luaopen_math (_State);
luaopen_debug (_State);
#endif
// open are buggy????
clear();
}
// *** Register basics
CLuaStackChecker lsc(this);
// do: LUA_REGISTRYINDEX.(lightuserdata*)this.classes= {}
pushLightUserData((void *) this);
newTable();
push("classes");
newTable(); // registry class
setTable(-3);
setTable(LUA_REGISTRYINDEX);
// add pointer from lua state to this CLuaState object
// do: LUA_REGISTRYINDEX.(lightuserdata*)_State= this
pushLightUserData((void *) _State); // NB : as creator of the state, we make the assumption that
// no one will be using this pointer in the registry (cf. ref manual about registry)
pushLightUserData((void *) this);
setTable(LUA_REGISTRYINDEX);
// Create the Table that contains Function cache for small script execution
push(_NELSmallScriptTableName); // 1:TableName
newTable(); // 1:TableName 2:table
setTable(LUA_REGISTRYINDEX); // ...
_SmallScriptPool= 0;
// *** luabind init
luabind::open(_State);
}
// ***************************************************************************
CLuaStackRestorer::CLuaStackRestorer(CLuaState *state, int finalSize) : _FinalSize(finalSize), _State(state)
{
}
// ***************************************************************************
CLuaStackRestorer::~CLuaStackRestorer()
{
nlassert(_State);
_State->setTop(_FinalSize);
}
#ifdef NL_OS_WINDOWS
static int NoOpReportHook( int /* reportType */, char * /* message */, int * /* returnValue */ )
{
return TRUE;
}
#endif
// ***************************************************************************
CLuaState::~CLuaState()
{
nlassert(_State);
#ifdef LUA_NEVRAX_VERSION
if (!LuaDebuggerIDE)
#else
if (1)
#endif
{
lua_close(_State);
}
else
{
#ifdef LUA_NEVRAX_VERSION
LuaDebuggerIDE->stopDebug(); // this will also close the lua state
LuaDebuggerIDE = NULL;
LuaDebuggerVisible = false;
#ifdef NL_OS_WINDOWS
nlassert(LuaDebuggerModule)
_CrtSetReportHook(NoOpReportHook); // prevent dump of memory leaks at this point
//::FreeLibrary(LuaDebuggerModule); // don't free the library now (seems that it destroy, the main window, causing
// a crash when the app window is destroyed for real...
// -> FreeLibrary will be called when the application is closed
LuaDebuggerModule = 0;
#endif
#endif
}
// Clear Small Script Cache
_SmallScriptPool= 0;
_SmallScriptCache.clear();
}
// ***************************************************************************
CLuaState *CLuaState::fromStatePointer(lua_State *state)
{
//H_AUTO(Lua_CLuaState_fromStatePointer)
nlassert(state);
int initialStackSize = lua_gettop(state);
lua_checkstack(state, initialStackSize + 2);
lua_pushlightuserdata(state, (void *) state);
lua_gettable(state, LUA_REGISTRYINDEX);
if (!lua_islightuserdata(state, -1))
{
lua_pop(state, 1);
return NULL;
}
CLuaState *ls = (CLuaState *) lua_touserdata(state, -1);
lua_pop(state, 1);
nlassert(initialStackSize == lua_gettop(state));
return ls;
}
// ***************************************************************************
struct CLuaReader
{
const std::string *Str;
bool Done;
};
void CLuaState::loadScript(const std::string &code, const std::string &dbgSrc)
{
//H_AUTO(Lua_CLuaState_loadScript)
if (code.empty()) return;
struct CHelper
{
static const char *luaChunkReaderFromString(lua_State * /* L */, void *ud, size_t *sz)
{
CLuaReader *rd = (CLuaReader *) ud;
if (!rd->Done)
{
rd->Done = true;
*sz = rd->Str->size();
return rd->Str->c_str();
}
else
{
*sz = 0;
return NULL;
}
}
};
CLuaReader rd;
rd.Str = &code;
rd.Done = false;
Compile NLGUI with lua 5.2
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int result = lua_load(_State, CHelper::luaChunkReaderFromString, (void *) &rd, dbgSrc.c_str()
#if LUA_VERSION_NUM >= 502
, NULL
#endif
);
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if (result !=0)
{
// pop the error code
string err= toString();
pop();
// throw error
throw ELuaParseError(err);
}
}
// ***************************************************************************
void CLuaState::executeScriptInternal(const std::string &code, const std::string &dbgSrc, int numRet)
{
//H_AUTO(Lua_CLuaState_executeScriptInternal)
CLuaStackChecker lsc(this, numRet);
// load the script
loadScript(code, dbgSrc);
// execute
if (pcall(0, numRet) != 0)
{
// pop the error code
string err= toString();
pop();
// throw error
throw ELuaExecuteError(err);
}
}
// ***************************************************************************
void CLuaState::executeScript(const std::string &code, int numRet)
{
//H_AUTO(Lua_CLuaState_executeScript)
// run the script, with dbgSrc==script
executeScriptInternal(code, code, numRet);
}
// ***************************************************************************
bool CLuaState::executeScriptNoThrow(const std::string &code, int numRet)
{
//H_AUTO(Lua_CLuaState_executeScriptNoThrow)
try
{
executeScript(code, numRet);
}
catch (const ELuaError &e)
{
nlwarning(e.what());
return false;
}
return true;
}
// ***************************************************************************
bool CLuaState::executeFile(const std::string &pathName)
{
//H_AUTO(Lua_CLuaState_executeFile)
CIFile inputFile;
if(!inputFile.open(pathName))
return false;
#ifdef LUA_NEVRAX_VERSION
if (LuaDebuggerIDE)
{
std::string path = NLMISC::CPath::getCurrentPath() + "/" + pathName.c_str();
path = CPath::standardizeDosPath(path);
LuaDebuggerIDE->addFile(path.c_str());
}
#endif
// load the script text
string script;
/*
while(!inputFile.eof())
{
char tmpBuff[5000];
inputFile.getline(tmpBuff, 5000);
script+= tmpBuff;
script+= "\n";
}
*/
script.resize(CFile::getFileSize(pathName));
inputFile.serialBuffer((uint8 *) &script[0], (uint)script.size());
// execute the script text, with dbgSrc==filename (use @ for lua internal purpose)
executeScriptInternal(script, string("@") + CFile::getFilename(pathName));
return true;
}
// ***************************************************************************
void CLuaState::executeSmallScript(const std::string &script)
{
//H_AUTO(Lua_CLuaState_executeSmallScript)
if (script.empty()) return;
// *** if the small script has not already been called before, parse it now
TSmallScriptCache::iterator it= _SmallScriptCache.find(script);
if(it==_SmallScriptCache.end())
{
CLuaStackChecker lsc(this);
// add it to a function
loadScript(script, script);
// Assign the method to the NEL table: NELSmallScriptTable[_SmallScriptPool]= function
push(_NELSmallScriptTableName); // 1:function 2:NelTableName
getTable(LUA_REGISTRYINDEX); // 1:function 2:NelTable
insert(-2); // 1:NelTable 2:function
rawSetI(-2, _SmallScriptPool); // 1:NelTable
pop();
// bkup in cache map
it= _SmallScriptCache.insert(make_pair(script, _SmallScriptPool)).first;
// next allocated
_SmallScriptPool++;
}
// *** Execute the function associated to the script
CLuaStackChecker lsc(this);
push(_NELSmallScriptTableName); // 1:NelTableName
getTable(LUA_REGISTRYINDEX); // 1:NelTable
// get the function at the given index in the "NELSmallScriptTable" table
rawGetI(-1, it->second); // 1:NelTable 2:function
// execute
if (pcall(0, 0) != 0)
{
// Stack: 1: NelTable 2:errorcode
// pop the error code, and clear stack
string err= toString();
pop(); // 1:NelTable
pop(); // ....
// throw error
throw ELuaExecuteError(err);
}
else
{
// Stack: 1:NelTable
pop(); // ....
}
}
// ***************************************************************************
void CLuaState::registerFunc(const char *name, lua_CFunction function)
{
//H_AUTO(Lua_CLuaState_registerFunc)
lua_register(_State, name, function);
}
// ***************************************************************************
void CLuaState::pushCClosure(lua_CFunction function, int n)
{
//H_AUTO(Lua_CLuaState_pushCClosure)
nlassert(function);
nlassert(getTop() >= n);
lua_pushcclosure(_State, function, n);
}
// ***************************************************************************
void CLuaState::push(TLuaWrappedFunction function)
{
//H_AUTO(Lua_CLuaState_push)
struct CForwarder
{
static int callFunc(lua_State *ls)
{
nlassert(ls);
TLuaWrappedFunction func = (TLuaWrappedFunction) lua_touserdata(ls, lua_upvalueindex(1));
CLuaState *state = (CLuaState *) lua_touserdata(ls, lua_upvalueindex(2));
nlassert(func);
nlassert(state);
// get real function pointer from the values in the closure
int numResults = 0;
int initialStackSize = state->getTop();
try
{
// call the actual function
numResults = func(*state);
}
catch(const std::exception &e)
{
// restore stack to its initial size
state->setTop(initialStackSize);
lua_pushstring(ls, e.what());
// TODO : see if this is safe to call lua error there" ... (it does a long jump)
lua_error(ls);
}
return numResults;
}
};
pushLightUserData((void *) function);
pushLightUserData((void *) this);
pushCClosure(CForwarder::callFunc, 2);
}
// ***************************************************************************
// Wrapped function
void CLuaState::registerFunc(const char *name, TLuaWrappedFunction function)
{
//H_AUTO(Lua_CLuaState_registerFunc)
nlassert(function);
CLuaStackChecker lsc(this);
Compile NLGUI with lua 5.2
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#if LUA_VERSION_NUM >= 502
pushGlobalTable();
#endif
merging gui editor repo.
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push(name);
push(function);
Compile NLGUI with lua 5.2
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#if LUA_VERSION_NUM >= 502
setTable(-3); // -3 is the pushGlobalTable
pop(1); // pop the pushGlobalTable value (setTable popped the 2 pushes)
#else
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setTable(LUA_GLOBALSINDEX);
Compile NLGUI with lua 5.2
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#endif
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}
// ***************************************************************************
bool CLuaState::getTableBooleanValue(const char *name, bool defaultValue)
{
//H_AUTO(Lua_CLuaState_getTableBooleanValue)
nlassert(name);
push(name);
getTable(-2);
if (isNil())
{
pop();
return defaultValue;
}
bool result = toBoolean(-1);
pop();
return result;
}
// ***************************************************************************
double CLuaState::getTableNumberValue(const char *name, double defaultValue)
{
//H_AUTO(Lua_CLuaState_getTableNumberValue)
nlassert(name);
push(name);
getTable(-2);
if (isNil())
{
pop();
return defaultValue;
}
double result = toNumber(-1);
pop();
return result;
}
Changed: Support for integer types in Lua 5.3, fixes #253
2015-11-13 17:42:50 +00:00
// ***************************************************************************
sint64 CLuaState::getTableIntegerValue(const char *name, sint64 defaultValue)
{
//H_AUTO(Lua_CLuaState_getTableIntegerValue)
nlassert(name);
push(name);
getTable(-2);
if (isNil())
{
pop();
return defaultValue;
}
sint64 result = toInteger(-1);
pop();
return result;
}
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// ***************************************************************************
const char *CLuaState::getTableStringValue(const char *name, const char *defaultValue)
{
//H_AUTO(Lua_CLuaState_getTableStringValue)
nlassert(name);
push(name);
getTable(-2);
if (isNil())
{
pop();
return defaultValue;
}
const char *result = toString(-1);
pop();
return result;
}
// ***************************************************************************
void CLuaState::getStackContext(string &ret, uint stackLevel)
{
//H_AUTO(Lua_CLuaState_getStackContext)
nlassert(_State);
ret.clear();
lua_Debug dbg;
if(lua_getstack (_State, stackLevel, &dbg))
{
if(lua_getinfo(_State, "lS", &dbg))
{
ret= NLMISC::toString("%s:%d:", dbg.short_src, dbg.currentline);
}
}
}
// ***************************************************************************
Compile NLGUI with lua 5.2
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int CLuaState::pcallByNameGlobal(const char *functionName, int nargs, int nresults, int errfunc /*= 0*/)
{
int initialStackSize = getTop();
nlassert(functionName);
#if LUA_VERSION_NUM >= 502
pushGlobalTable();
#else
nlassert(isTable(LUA_GLOBALSINDEX));
pushValue(LUA_GLOBALSINDEX);
#endif
return pcallByNameInternal(functionName, nargs, nresults, errfunc, initialStackSize);
}
int CLuaState::pcallByName(const char *functionName, int nargs, int nresults, int funcTableIndex, int errfunc /*= 0*/)
merging gui editor repo.
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{
int initialStackSize = getTop();
nlassert(functionName);
nlassert(isTable(funcTableIndex));
pushValue(funcTableIndex);
Compile NLGUI with lua 5.2
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return pcallByNameInternal(functionName, nargs, nresults, errfunc, initialStackSize);
}
int CLuaState::pcallByNameInternal(const char *functionName, int nargs, int nresults, int errfunc /*= 0*/, int initialStackSize)
{
//H_AUTO(Lua_CLuaState_pcallByName)
merging gui editor repo.
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push(functionName);
getTable(-2);
remove(-2); // get rid of the table
nlassert(getTop() >= nargs); // not enough arguments on the stack
// insert function before its arguments
insert(- 1 - nargs);
int result = pcall(nargs, nresults, errfunc);
int currSize = getTop();
if (result == 0)
{
nlassert(currSize == initialStackSize - nargs + nresults);
}
else
{
// errors, the stack contains a single string
if (errfunc == 0)
{
nlassert(currSize == initialStackSize - nargs + 1);
}
// else if there's an error handler, can't know the size of stack
}
return result;
}
// ***************************************************************************
void CLuaState::dumpStack()
{
//H_AUTO(Lua_CLuaState_dumpStack)
nlinfo("LUA STACK CONTENT (size = %d)", getTop());
nlinfo("=================");
CLuaStackChecker lsc(this);
for(int k = 1; k <= getTop(); ++k)
{
pushValue(k);
std::string value = toString(-1) ? toString(-1) : "?";
nlinfo("Stack entry %d : type = %s, value = %s", k, getTypename(type(-1)), value.c_str());
pop();
}
}
// ***************************************************************************
void CLuaState::getStackAsString(std::string &dest)
{
//H_AUTO(Lua_CLuaState_getStackAsString)
dest = NLMISC::toString("Stack size = %d\n", getTop());
CLuaStackChecker lsc(this);
for(int k = 1; k <= getTop(); ++k)
{
pushValue(k);
std::string value = toString(-1) ? toString(-1) : "?";
dest += NLMISC::toString("Stack entry %d : type = %s, value = %s\n", k, getTypename(type(-1)), value.c_str());
pop();
}
}
//================================================================================
CLuaStackChecker::~CLuaStackChecker()
{
nlassert(_State);
if (!_ExceptionContextCounter)
{
int currSize = _State->getTop();
if (currSize != _FinalWantedSize)
{
static volatile bool assertWanted = true;
if (assertWanted)
{
nlwarning("Lua stack size error : expected size is %d, current size is %d", _FinalWantedSize, currSize);
_State->dumpStack();
nlassert(0);
}
}
}
else
{
// this object dtor was called because an exception was thrown, so let the exception
// propagate (the stack must be broken, but because of the exception, not because of code error)
_State->setTop(_FinalWantedSize);
}
}
// ***************************************************************************
void ELuaWrappedFunctionException::init(CLuaState *ls, const std::string &reason)
{
//H_AUTO(Lua_ELuaWrappedFunctionException_init)
// Print first Lua Stack Context
if(ls)
{
ls->getStackContext(_Reason, 1); // 1 because 0 is the current C function => return 1 for script called
// enclose with cool colors
LuaHelperStuff::formatLuaStackContext(_Reason);
}
// Append the reason
_Reason+= reason;
}
// ***************************************************************************
ELuaWrappedFunctionException::ELuaWrappedFunctionException(CLuaState *luaState)
{
//H_AUTO(Lua_ELuaWrappedFunctionException_ELuaWrappedFunctionException)
init(luaState, "");
}
// ***************************************************************************
ELuaWrappedFunctionException::ELuaWrappedFunctionException(CLuaState *luaState, const std::string &reason)
{
//H_AUTO(Lua_ELuaWrappedFunctionException_ELuaWrappedFunctionException)
init(luaState, reason);
}
// ***************************************************************************
ELuaWrappedFunctionException::ELuaWrappedFunctionException(CLuaState *luaState, const char *format, ...)
{
//H_AUTO(Lua_ELuaWrappedFunctionException_ELuaWrappedFunctionException)
std::string reason;
NLMISC_CONVERT_VARGS (reason, format, NLMISC::MaxCStringSize);
init(luaState, reason);
}
//================================================================================
void CLuaState::newTable()
{
//H_AUTO(Lua_CLuaState_newTable)
nlverify( lua_checkstack(_State, 1) );
lua_newtable(_State);
}
//================================================================================
int CLuaState::getGCCount()
{
//H_AUTO(Lua_CLuaState_getGCCount)
Compile NLGUI with lua 5.2
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#if LUA_VERSION_NUM >= 502
// deprecated
return 0;
#else
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return lua_getgccount(_State);
Compile NLGUI with lua 5.2
2013-06-16 00:33:04 +00:00
#endif
merging gui editor repo.
2013-02-14 15:53:06 +00:00
}
//================================================================================
int CLuaState::getGCThreshold()
{
//H_AUTO(Lua_CLuaState_getGCThreshold)
#ifdef LUA_NEVRAX_VERSION
return _GCThreshold;
#else
# if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 501
return lua_gc(_State, LUA_GCCOUNT, 0);
# else
return lua_getgcthreshold(_State);
# endif
#endif
}
//================================================================================
void CLuaState::setGCThreshold(int kb)
{
//H_AUTO(Lua_CLuaState_setGCThreshold)
#ifdef LUA_NEVRAX_VERSION
_GCThreshold = kb;
handleGC();
#else
# if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 501
lua_gc(_State, LUA_GCCOLLECT, kb);
# else
lua_setgcthreshold(_State, kb);
# endif
#endif
}
//================================================================================
void CLuaState::handleGC()
{
//H_AUTO(Lua_CLuaState_handleGC)
#ifdef LUA_NEVRAX_VERSION
// must handle gc manually with the refcounted version
int gcCount = getGCCount();
if (gcCount >= _GCThreshold)
{
nlwarning("Triggering GC : memory in use = %d kb, current threshold = %d kb", gcCount, _GCThreshold);
lua_setgcthreshold(_State, 0);
gcCount = getGCCount();
_GCThreshold = std::max(MinGCThreshold, gcCount * 2);
nlwarning("After GC : memory in use = %d kb, threshold = %d kb", gcCount, _GCThreshold);
}
#endif
}
}
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