find_or_construct<SharedData>("Data")(); { scoped_lock<interprocess_mutex> lock(data->mutex); // 自动加锁 data->counter++; } // 读取进程同理,通过互斥锁保证原子操作 五、关键注意事项 生命周期管理 使用shared_memory_object::remove()显式删除共享
class boost::interprocess::shared_memory_object which can be used to create and manage shared memory. In pratice, this class is raraly used because it requires the program to read and write individual bytes from and to the shared memory. Boost.Interprocess provides 1. boost::interprocess::mana...
struct SharedData { interprocess_mutex mutex; int counter = 0; }; // 写入进程 managed_shared_memory segment(open_or_create, "SyncSHM", 4096); SharedData* data = segment.find_or_construct<SharedData>("Data")(); { scoped_lock<interprocess_mutex> lock(data->mutex); // 自动加锁 data->...
(2)lock模板类:boost::unique_lock,boost::shared_lock,其中unique_lock为独占锁,shared_lock为共享锁。unique_lock中的T可为mutex类中的任意一种,如果为shared_mutex,那么boost::unique_lock类的对象构造函数构造时,会自动调用shared_mutex的shared_lock方法,析构函数里会自动调用shared_mutex的shared_unlock方法。...
mutex_family>，iset_index〉managed_shared_memory_null_mutex;并在managed_shared_memory_null_mutex...
//doc_anonymous_mutex_shared_data.hpp #include <boost/interprocess/sync/interprocess_mutex.hpp> ... C++ std::deque std::deque template < class T, class Alloc = allocator > class deque; Double ended queue deque ... std::deque deque容器为一个给定类型的元素进行线性处理,像向量一样,它能够...
这样一块内存区用 Boost.Interprocess 的boost::interprocess::shared_memory_object类表示。 为使用这个类,需要包含boost/interprocess/shared_memory_object.hpp头文件。 #include <boost/interprocess/shared_memory_object.hpp> #include <iostream> int main() ...
mutex_family>，iset_index〉managed_shared_memory_null_mutex;并在managed_shared_memory_null_mutex...
(1)mutex对象类:mutex类主要有两种:boost::mutex,boost::shared_mutex,其中mutex有lock和unlock方法,shared_mutex除了提供lock和unlock方法外,还有shared_lock和shared_unlock方法。因此,boost::mutex为独占互斥类,boost::shared_mutex为共享互斥类。(2)lock模板类:boost::unique_lock,boost::shared_lock,其中unique_...
C++17 std::shared_mutex的替代方案boost::shared_mutex 2019-12-15 21:56 −... 南哥的天下 0 3312 macOS 中Boost的安装和使用 2019-12-18 00:44 −## 1 安装Boost ### 1.1 使用源码安装 1. 下载[Boost源码](http://www.boost.org/) 2. 解压放在任意目录,例如`/home/wang/` 3. `./boot...