boost::thread使用方法

最新推荐文章于 2023-04-18 19:32:59 发布

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最新推荐文章于 2023-04-18 19:32:59 发布

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分类专栏： C++ 文章标签： thread constructor library join exception class

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这篇博客详细介绍了如何使用Boost库中的thread类。包括默认构造函数、带参数的构造函数来创建线程，以及如何通过join和timed_join方法控制线程的执行。此外，还提到了interrupt方法来中断线程以及thread类在命名空间和线程组操作中的应用。

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首先调用thread的构造函数

Default Constructor

thread();

Effects:

Constructs a boost::thread instance that refers to Not-a-Thread.

Throws:

Nothing

解释：这个构造函数并不附加线程，自然无法启动

Thread Constructor

template<typename Callable>
thread(Callable func);

Preconditions:

Callable must by copyable.

Effects:

func is copied into storage managed internally by the thread library, and that copy is invoked on a newly-created thread of execution. If this invocation results in an exception being propagated into the internals of the thread library that is not of type boost::thread_interrupted, then std::terminate() will be called.

Postconditions:

*this refers to the newly created thread of execution.

Throws:

boost::thread_resource_error if an error occurs.

Callable可以为一个静态或全局函数指针，也可以是一个拥有operator()函数的类，新建立的线程将会调用该函数或operator()，类似Go()。

Thread Constructor with arguments

template <class F,class A1,class A2,...>
thread(F f,A1 a1,A2 a2,...);

Preconditions:

F and each An must by copyable or movable.

Effects:

As if thread(boost::bind(f,a1,a2,...)). Consequently, f and each an are copied into internal storage for access by the new thread.

Postconditions:

*this refers to the newly created thread of execution.

Throws:

boost::thread_resource_error if an error occurs.

Note:

Currently up to nine additional arguments a1 to a9 can be specified in addition to the function f.

调用thread::join()将会执行新线程，该函数会阻塞calling thread直至新线程执行结束

调用thread::timed_join()将会执行新线程，该函数会阻塞calling thread直至传入参数所规定的时间结束

控制运行中的线程

void interrupt();

static void sleep(system_time const& abs_time);

static void yield();

Namespace `this_thread`

Non-member function get_id() Non-member function interruption_point() Non-member function interruption_requested() Non-member function interruption_enabled() Non-member function sleep() Non-member function yield() Class disable_interruption Class restore_interruption Non-member function template at_thread_exit()

用于调用当前线程

Class `thread_group`

Constructor Destructor Member function create_thread() Member function add_thread() Member function remove_thread() Member function join_all() Member function interrupt_all() Member function size()

#include <boost/thread/thread.hpp>

class thread_group:
    private noncopyable
{
public:
    thread_group();
    ~thread_group();

    template<typename F>
    thread* create_thread(F threadfunc);
    void add_thread(thread* thrd);
    void remove_thread(thread* thrd);
    void join_all();
    void interrupt_all();
    int size() const;
};