#include <iostream> #include <boost/interprocess/managed_shared_memory.hpp> #include <boost/interprocess/allocators/allocator.hpp> #include <boost/interprocess/containers/string.hpp> using namespace std; int main() { //boost::inter…

struct shareDataEx : shareData { int index; int total_size; }; typedef managed_shared_memory::segment_manager segment_manager_t; //段管理器 typedef allocator<shareDataEx, segment_manager_t> mem_allocator; //定义基于shareDataEx类型的分配器 typedef deque<shareDa…

发送端:#include <iostream> #include <windows.h> #include <string> using namespace std; #include <boost/interprocess/managed_shared_memory.hpp> #include <boost/interprocess/mapped_region.hpp> #include <thread> using namespa…

#include <iostream> #include <boost/interprocess/managed_shared_memory.hpp> struct pos2d { int x; int y; }; using namespace std; int main() { //boost::interprocess::shared_memory_object类是按照单个字节的方式读写共享内存,用起来不方便 boost::interprocess::shared_memor…

使用方法首先给信号量初始化赋值,可以根据需要设定需要的值,之前在写项目的过程中用这个控制下载的线程个数. boost::interprocess::interprocess_semaphore m_semaphore(); 然后就是pv操作了,v操作就只有一个post(),post()一次,信号量加1.p操作有三个,看函数名字都很明显知道是什么意思, wait(),try_wait() ,timed_wait(const boost::posix_time::ptime&abs_time). 这…

From: http://www.martinbroadhurst.com/replacing-all-occurrences-of-a-character-in-a-stdstring.html This can be done using the standard library or Boost. The advantage of using Boost is that you get Boost ranges, which mean that you don’t need to spec…

std::istreambuf_iterator<char> eos; std::string s(std::istreambuf_iterator<char>(stream), eos);---------------------------------------------------------------------------- (could be a one-liner if not for MVP) post-2011 edit, this approach is…

//doc_anonymous_mutex_shared_data.hpp #include <boost/interprocess/sync/interprocess_mutex.hpp> struct shared_memory_log { }; }; shared_memory_log() : current_line() , end_a(false) , end_b(false) {} //Mutex to protect access to the queue boost::inte…

How to convert a std::string to const char* or char*? 1. If you just want to pass a std::string to a function that needs const char* you can use std::string str; const char * c = str.c_str(); If you want to get a writable copy, like char *, you can d…

std::string cstr; QString qstring; //****从std::string 到QString qstring = QString(QString::fromLocal8Bit(cstr.c_str())); //****从QString 到 std::string cstr = string((const char *)qstring.toLocal8Bit());…