这是一个众所周知的问题吗？我认为这是实现的局限性。来自/boost/thread/win32/shared_mutex.hpp ...
mutex:独占式互斥量 shared_mutex: 读共享/写互斥的共享互斥量 recursive_mutex: 递归互斥量 timed_mutex:超时独占互斥量 recursive_timed_mutex:超时递归互斥量 1.局部互斥锁(确保退出作用域时,释放锁) #include <boost/thread/mutex.hpp> boost::mutex mutex_; boost::mutex::scoped_lock lock(mutex_); 1. ...
boost::threadthrd1(count(1)); boost::threadthrd2(count(2)); thrd1.join(); thrd2.join(); return0; } boost库多线程(Thread)互斥体(mutex)用法举例3: // 这个例子和例2一样,除了使用Boost.Bind来简化创建线程携带数据,避免使用函数对象 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1...
#include <boost/thread.hpp>#include<thread>int_tmain(intargc, _TCHAR*argv[]) { std::vector<int>items; boost::shared_mutex mutex; std::thread r1([&]() mutable {while(true) { std::cout<<"1:我要读10秒"<<std::endl; boost::shared_lock<boost::shared_mutex>lk(mutex); std::cout<...
C++ 自带的临界区、Mutex等只支持唯一锁,这对性能是有很大影响的。 Boost提供共享锁功能,能够对读写区分加锁。 // 头文件 #include <boost/thread/shared_mutex.hpp> #include <boost/thread.hpp> typedef boost::shared_mutex Lock; typedef boost::unique_lock<Lock> WriteLock; ...
#include <boost/thread/shared_mutex.hpp> int main() { typedef boost::shared_mutex Mutex; typedef boost::shared_lock<Mutex> ReadLock; typedef boost::unique_lock<Mutex> WriteLock; Mutex mutex; { // acquire read lock ReadLock read( mutex ); ...
#include<boost/thread.hpp>#include<boost/chrono.hpp>#include<iostream>#include<vector>#include<cstdlib>#include<ctime>voidwait(int seconds){boost::this_thread::sleep_for(boost::chrono::seconds{seconds});}boost::shared_mutex mutex;std::vector<int>random_numbers;voidfill(){std::srand(static_ca...
shared_mutex 读写锁 通常我们会使用Mutex来保护共享资源,防止在多线程环境中数据的不一致性,当一个资源被锁定,其他线程只能阻塞等待释放后才可继续操作。 #define BOOST_THREAD_VERSION 5 #include <iostream> #include <boost/thread/thread_guard.hpp> using namespace std; using namespace boost; // 最基本...
num_mutex.lock();for (long i = 0; i < 1000000; ++i) { num++;} num_mutex.unlock();};void numsub() { num_mutex.lock();for (long i = 0; i < 1000000; ++i) { num--;} num_mutex.unlock();} int main() { std::thread t1(numplus);std::thread t2(numsub);t1.join();t...
不然轻量级的轮子，只需要把boost里的config.h、xxxImpl、xxxHelper、xxxAllocator、xxxPool、xxxMutex这些...