mirror of
https://github.com/love2d/love.git
synced 2026-08-15 15:51:12 +02:00
Alex Szpakowski
ec9dec6b80
luax_pushtype keeps the object in a weak table and checks the table before creating a new userdata, so it re-uses the object's existing wrapper userdata if it can, whenever the object is pushed to Lua. This fixes some subtle issues with love objects, where using them as keys in tables would not always work as expected (https://love2d.org/forums/viewtopic.php?f=4&t=39398&p=112388#p112415). It also decreases the amount of new Lua objects created, saving the garbage collector some work.
118 lines
2.8 KiB
C++
118 lines
2.8 KiB
C++
/**
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* Copyright (c) 2006-2010 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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// LOVE
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#include "wrap_ThreadModule.h"
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#include "wrap_LuaThread.h"
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#include "wrap_Channel.h"
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#include "ThreadModule.h"
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#include "filesystem/File.h"
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#include "filesystem/FileData.h"
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namespace love
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{
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namespace thread
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{
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static ThreadModule *instance = 0;
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int w_newThread(lua_State *L)
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{
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std::string name = "Thread code";
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love::Data *data = 0;
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if (lua_isstring(L, 1) || luax_istype(L, 1, FILESYSTEM_FILE_T))
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luax_convobj(L, 1, "filesystem", "newFileData");
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if (luax_istype(L, 1, FILESYSTEM_FILE_DATA_T))
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{
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love::filesystem::FileData *fdata = luax_checktype<love::filesystem::FileData>(L, 1, "FileData", FILESYSTEM_FILE_DATA_T);
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name = std::string("@") + fdata->getFilename();
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data = fdata;
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}
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else
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{
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data = luax_checktype<love::Data>(L, 1, "Data", DATA_T);
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}
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LuaThread *t = instance->newThread(name, data);
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luax_pushtype(L, "Thread", THREAD_THREAD_T, t);
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return 1;
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}
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int w_newChannel(lua_State *L)
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{
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Channel *c = instance->newChannel();
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luax_pushtype(L, "Channel", THREAD_CHANNEL_T, c);
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return 1;
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}
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int w_getChannel(lua_State *L)
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{
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std::string name = luax_checkstring(L, 1);
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Channel *c = instance->getChannel(name);
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luax_pushtype(L, "Channel", THREAD_CHANNEL_T, c);
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return 1;
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}
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// List of functions to wrap.
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static const luaL_Reg module_functions[] = {
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{ "newThread", w_newThread },
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{ "newChannel", w_newChannel },
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{ "getChannel", w_getChannel },
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{ 0, 0 }
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};
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static const lua_CFunction types[] = {
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luaopen_thread,
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luaopen_channel,
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0
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};
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extern "C" int luaopen_love_thread(lua_State *L)
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{
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if (instance == 0)
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{
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try
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{
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instance = new love::thread::ThreadModule();
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}
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catch (Exception & e)
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{
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return luaL_error(L, "%s", e.what());
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}
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}
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else
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instance->retain();
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WrappedModule w;
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w.module = instance;
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w.name = "thread";
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w.flags = MODULE_T;
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w.functions = module_functions;
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w.types = types;
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return luax_register_module(L, w);
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}
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} // thread
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} // love
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