I have a class in C++ called "Point": class Point { public: int x, y; //constructor Point(int x, int y) { this->x = x; this->y = y; } }; My goal is to be able to instantiate a Point object with a Lua script, and extract the pointer to this object from the Lua stack. Here is my (currently not working) attempt which hopefully clarifies what exactly I am trying
我有一个名为“Point”的C ++类： class Point { public: int x, y; //constructor Point(int x, int y) { this->x = x; this->y = y; } }; 我的目标是能够用Lua脚本实例化一个Point对象，并从Lua栈中提取指向这个对象的指针。 这是我的（目前不工作）尝试，希望澄清我正在尝试做什么; 注意这段代码基本上是修改了本教程的复制/粘贴，并且我使用的是Lua 5.2： static int newPoint(lua_State *L) {
I know the basics of interacting with lua and C, and I am currently trying to perform the following line of lua in c++ Func1():Func2().Table1.value1 I am trying to get the value of "value2" and use it in my C program. The following is the code I wrote to attempt to get this value in C. int GetNumber() { int retn = 0; g_clientlua.lua_getfield(LUA_REGISTRYINDEX, "Player");
我知道与lua和C交互的基础知识，我目前正在尝试在c ++中执行下面的lua行 Func1():Func2().Table1.value1 我试图获得“value2”的价值并将其用于我的C程序。 以下是我为了获得C值而写的代码。 int GetNumber() { int retn = 0; g_clientlua.lua_getfield(LUA_REGISTRYINDEX, "Player"); g_clientlua.lua_getfield(-1, "Func2"); g_clientlua.lua_getfield(LUA_GLOBALSINDEX, "Func1"); g_clientlua.lua_call
I have a very similar problem to one described on the cmake mailing list where we have a project dependent on many static libraries (all built from source in individual submodules, each with their own CMakeLists.txt describing the build process for each library) that I'd like to combine into a single static library for release to the consumers. The dependencies of my library are subject to c
我有一个与cmake邮件列表中描述的非常类似的问题，我们有一个项目依赖于许多静态库（所有这些库都是从各个子模块的源代码构建的，每个库都有自己的CMakeLists.txt，用于描述每个库的构建过程）想要将它们合并成一个静态库，以便发布给消费者。 我的图书馆的依赖关系可能会发生变化，我不想让这些更改中的开发者进一步受到影响。 整洁的解决方案是将所有的库绑定到一个单独的库中。 有趣的是， target_link_libraries命令在将
Visual Studio 2015 update 3 improved support of C++11 much, but I have strange problem and I am searching for workaround. When compiling variadic-template code with MSVC for template type arguments ("fully defined types") all works good, but if I want to use template template arguments ("partially defined types"), the result becomes incorrect. #include <iostream> usin
Visual Studio 2015更新3提高了对C ++ 11的支持，但是我遇到了一个奇怪的问题，我正在寻找解决方法。 当使用模板类型参数（“完全定义的类型”）的MSVC编译可变参数模板代码时，所有工作都很好，但是如果我想使用模板模板参数（“部分定义的类型”），则结果将变得不正确。 #include <iostream> using namespace std; template <template<typename> class... TS> struct PARTIAL { static void test(std::o
So I was answering this question: Define friend function template of class template, and I found some "weird" behavior from g++ (5.3) and clang (3.8): Let's assume the following template: template<int M> struct test { private: int value; template<int U, int K> friend test<K> foo (test<U> const t); }; template <int M, int N = 2 * M> test
所以我回答了这个问题：定义了类模板的朋友函数模板，并且发现了g ++（5.3）和clang（3.8）中的一些“奇怪”行为： 我们假设以下模板： template<int M> struct test { private: int value; template<int U, int K> friend test<K> foo (test<U> const t); }; template <int M, int N = 2 * M> test<N> foo (test<M> const t) { test<N> r; r.value = t.
string inputLine = "1 2 3"; stringstream stream(inputLine); // Case One int x, y, z; stream >> x; stream >> y; stream >> z; // x, y, z have values 1, 2, 3 // Case Two cout << stream << endl; cout << stream << endl; cout << stream << endl; // All 3 print out 1 For the above code, why is it when you assign to an int, stringstream moves to the
string inputLine = "1 2 3"; stringstream stream(inputLine); // Case One int x, y, z; stream >> x; stream >> y; stream >> z; // x, y, z have values 1, 2, 3 // Case Two cout << stream << endl; cout << stream << endl; cout << stream << endl; // All 3 print out 1 对于上面的代码，为什么当你分配给一个int，stringstream移动到下一组字符，但不是与cou
helping a client out with an issue that they are having. I'm more of a sysadmin/DBA guy so I'm struggling with helping them out. They are saying it is a bug in the kernel/environment, I'm trying to either prove or disprove that before I insist that it is in their code or seek vendor support for the OS. Happens on Red Hat and Oracle Enterprise Linux 5.7 (and 5.8), application is wr
帮助客户解决他们遇到的问题。 我更像是一个系统管理员/ DBA家伙，所以我正在努力帮助他们。 他们说这是内核/环境中的一个错误，我试图在我坚持认为它在代码中或寻求供应商支持操作系统之前证明或反驳。 在Red Hat和Oracle Enterprise Linux 5.7（和5.8）上发生，应用程序是用C ++编写的 他们遇到的问题是主线程启动一个单独的线程来执行潜在的长时间运行的TCP连接（）[client to client]。 如果'长时间运行'方面
I have a program which spawns multiple threads, each of which executes a long-running task. The main thread then waits for all worker threads to join, collects results, and exits. If an error occurs in one of the workers, I want the remaining workers to stop gracefully, so that the main thread can exit shortly afterwards. My question is how best to do this, when the implementation of the lon
我有一个程序产生多个线程，每个线程执行长时间运行的任务。 主线程然后等待所有工作线程加入，收集结果并退出。 如果其中一位工作人员发生错误，我希望其余的工作人员能够优雅地停下来，这样主线程可以在不久之后退出。 我的问题是如何最好地做到这一点，当长期运行的任务的实现是由我无法修改代码的库提供的。 这是系统的一个简单的草图，没有错误处理： void threadFunc() { // Do long-running stuff } void mai
I use the reactor pattern in my C++ application. I use a thread vector std::vector <boost::thread> tvec {1000}; and an event queue boost::lockfree::queue <int> events {1000}; to handle events. My event dispatcher looks like this: void my_class::event_dispatcher (void) { INFO << "started"; int event_element = 0; try { while (true) {
我在我的C ++应用程序中使用reactor模式。 我使用线程向量std::vector <boost::thread> tvec {1000}; 和一个事件队列boost::lockfree::queue <int> events {1000}; 处理事件。 我的事件调度程序看起来像这样： void my_class::event_dispatcher (void) { INFO << "started"; int event_element = 0; try { while (true) { // 1. wait for an event
I have a thread system that keeps allways opened a certain amount of threads. The problem with this program si that it is having some memory leak problems. I am starting the program at around 8MB (RAM memory) and in 1 day i see it at 800MB. I used valgrind to track down this issue and i found the following while running this command time valgrind --leak-check=yes ./test2; : I get this when
我有一个线程系统，可以保持总线打开一定数量的线程。 这个程序的问题是它有一些内存泄漏问题。 我在大约8MB（RAM内存）启动程序，并在1天内，我看到它在800MB。 我用valgrind来追踪这个问题，并在运行此命令time valgrind --leak-check=yes ./test2;发现以下内容time valgrind --leak-check=yes ./test2; ： 当我使用1000踏板时，我得到这个，它甚至没有完成。 Thread 157: status = VgTs_WaitSys ==16172== at 0x4160