valgrind

I am using boost::uuid in order to generate unique ids: string UUid() { boost::uuids::uuid uuid = boost::uuids::random_generator()(); return boost::lexical_cast<std::string>(uuid); } When I use valgrind in order to analyse my code i get the following remarks: Valgrind log ==47807== Conditional jump or move depends on uninitialised value(s) ==47807== at 0x441D19: void boost::random::mersenne_twister_engine<unsigned int, 32ul, 624ul, 397ul, 31ul, 2567483615u, 11ul, 4294967295u, 7ul, 2636928640u, 15ul, 4022730752u, 18ul, 1812433253u>::seed<boost::uuids::detail::generator_iterator<boost::uuids:

I have a problem with my Linked List and the valgrind output. Without further adieu here is my linked list: typedef struct Map map; struct Map { void *address; double free_time; map* next; }*map_list; The list is created using a dummy head node. As you can see, the struct holds an address and a free time, which I try to associate them. In the find_and_free function I search this list using a time and if this time is smaller than the one stored in the list, I deallocate the saved address. And then I deallocate the list node as well. This is the function used to find any free time that is

I have a multithread application which uses boost::asio and boost::coroutine via its integration in boost::asio . Every thread has its own io_service object. The only shared state between threads are connection pools which are locked with mutex when connection is get or returned from/to the connection pool. When there is not enough connections in the pool I push infinite asio::steady_tiemer in internal structure of the pool and asynchronously waiting on it and I yielding from the couroutine function. When other thread returns connection to the pool it checks whether there is waiting timers, it

CMake简介和使用示例 CMake是常用的跨平台编译器。图像这块在给服务端做开发时，常有两个需求： （1）代码打成.so包，供别人调用； （2）编译、测试，用valgrind测内存情况。 工程较大时，借助CMake完成很方便。下面分别给出两种情况下，CMakeLists.txt的简单示例。 1. 借助CMake打.so包 把目录utils下的文件打出.so包。 其中CMakeLists.txt内容： cmake_minimum_required(VERSION 2.8) aux_source_directory(. utils_src) add_library(utils SHARED ${utils_src}) set_target_properties(utils PROPERTIES output_name "utils") 注意：前面的关键字可以大写也可以小写，括号内的关键字必须大写。 编译： cmake . make 生成了共享库libutils.so 2. 编译实际的项目 项目sticker_me中文件结构如下，其中build目录用于生成编译的结果。 它们之间的调用关系如下： 各个CMakeLists.txt如下： ./CMakeLists.txt： cmake_minimum_required(VERSION 2.8) project(sticker_me) add

My program fails with 'std::bad_alloc' error message. The program is scalable, so I've tested on a smaller version with valgrind and there are no memory leaks. This is an application of statistical mechanics, so I am basically making hundreds of objects, changing their internal data (in this case stl vectors of doubles), and writing to a datafile. The creation of objects lies inside a loop, so when it ends the memory is free. Something like: for (cont=0;cont<MAX;cont++){ classSection seccion; seccion.GenerateObjects(...); while(somecondition){ seccion.evolve(); seccion.writedatatofile(); }} So