Cpp Standard Library 简明教程

C++ Library - <thread>

Introduction

线程是一系列指令，可在多线程环境中与其他此类序列同时执行，同时共享同一地址空间。

Thread is a sequence of instructions that can be executed concurrently with other such sequences in multithreading environments, while sharing a same address spac.

Member types

Sr.No.

Member type & description

idIt is a thread id.

Native handle type It is a native handle type.

Member functions

Sr.No.	Member function & description
1	(constructor)It is used to construct thread.
2	(destructor)It is used to destructor thread.
3	[role="bare"]../cpp_standard_library/cpp_thread_operator_equal.htmlIt is a move-assign thread.
4	get_idIt is used to get thread id.
5	joinableIt is used to check if joinable.
6	joinIt is used to join thread.
7	detachIt is used to detach thread.
8	swapIt is used to swap threads.
9	native_handleIt is used to get native handle.
10	hardware_concurrency [static]It is used to detect hardware concurrency.

Non-member overloads

Sr.No.

Non-member overload & description

swap (thread)It is used to swap threads.

Example

在 std::thread 以下示例中：

In below example for std::thread.

#include <iostream>
#include <thread>

void foo() {
   std::cout << " foo is executing concurrently...\n";
}

void bar(int x) {
   std::cout << " bar is executing concurrently...\n";
}

int main() {
   std::thread first (foo);
   std::thread second (bar,0);

   std::cout << "main, foo and bar now execute concurrently...\n";

   first.join();
   second.join();

   std::cout << "foo and bar completed.\n";

   return 0;
}

输出应类似于此 −

The output should be like this −

main, foo and bar now execute concurrently...
 bar is executing concurrently...
 foo is executing concurrently...
foo and bar completed.