为什么会写这篇博客呢,原因是因为我在学 thrift 的时候 要写多线程,而我都没有学过,所以有了这篇博客。
Thread
Class to represent individual threads of execution.
A thread of execution is a sequence of instructions that can be executed concurrently with other such sequences in multithreading environments, while sharing a same address space.
An initialized thread object represents an active thread of execution; Such a thread object is joinable, and has a unique thread id.
A default-constructed (non-initialized) thread object is not joinable, and its thread id is common for all non-joinable threads.
A joinable thread becomes not joinable if moved from, or if either join or detach are called on them.
下面是官方的例子
// thread example #include <iostream> // std::cout #include <thread> // std::thread void foo() { // do stuff... } void bar(int x) { // do stuff... } int main() { std::thread first (foo); // spawn new thread that calls foo() std::thread second (bar,0); // spawn new thread that calls bar(0) std::cout << "main, foo and bar now execute concurrently...\n"; // synchronize threads first.join(); // pauses until first finishes second.join(); // pauses until second finishes std::cout << "foo and bar completed.\n"; return 0; }
如果直接拿这个例子,去测试的话,会报错的。
我是Linux的基础上编译链接的
链接的时候要加 -pthread,不然找不到这个
运行后