标签:class blog code color com string
1.boost里的互斥量类型由mutex表示。
代码示例:
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#include <iostream> #include <string> #include <vector> #include <boost/thread.hpp> #include <boost/thread/mutex.hpp> using namespace std; using namespace boost; int main() { mutex mu; try { this_thread::sleep(posix_time::seconds(2)); mu.lock(); //锁定cout对象 cout << "Some operations" <<endl; mu.unlock(); } catch ( int ) { mu.unlock(); return 0; } } |
二.上面的代码好像似曾相识,是的,在防止内存泄露的时候采用的和上面类似的处理方式,更加简洁的方式是智能指针,类似的我们需要用智能锁改写上面的代码scoped_lock智能锁。
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#include <iostream> #include <string> #include <vector> #include <boost/thread.hpp> #include <boost/thread/mutex.hpp> using namespace std; using namespace boost; template < typename T> class basic_atom:noncopyable { private : T n; typedef mutex mutex_t; mutex_t mu; public : basic_atom(T x = T()):n(x){} T operator++() { mutex_t::scoped_lock lock(mu); return ++n; } operator T(){ return n;} }; int main() { return 0; } |
boost之mutex scoped_lock,布布扣,bubuko.com
标签:class blog code color com string
原文地址:http://www.cnblogs.com/lidabo/p/3785156.html