cmake(9) 配置thread線程

 

 CMakeLists.txt

cmake_minimum_required(VERSION 3.10)

project(thread_test)#項目名字

find_package(Threads) #引入Threads外部依賴包

set(Current_LIST main.cpp )#Current_LIST記錄要參與可執行文件的源代碼

add_executable(${PROJECT_NAME} ${Current_LIST} )#可執行文件

target_link_libraries (${PROJECT_NAME} pthread) #依賴線程

main.py

#include <iostream>
#include <unistd.h> // Linux系統下的頭文件，下面用到的sleep函數就是出自這里，其本身與多線程沒什么關系
#include <thread>   // C++多線程API頭文件
#include <mutex>
#include <vector>


using namespace std;

vector<int> vec_int;
// mutex類型的獨占鎖
std::mutex mymutex;

void demo2_thread1() {
    // 在線程函數執行前加上這一句
    unique_lock<mutex> lock(mymutex);
    for (int i = 0; i < 5; ++i) {
        cout << "Adding element " << i << " from thread 1" << endl;
        vec_int.push_back(i);
        sleep(1);
    }
}

void demo2_thread2() {
    // 在線程函數執行前加上這一句
    unique_lock<mutex> lock(mymutex);
    for (int i = 0; i < 5; ++i) {
        int e = 100 * i + 100;
        cout << "Adding element " << e << " from thread 2" << endl;
        vec_int.push_back(e);
        sleep(1);
    }
}

int main() {
    thread t1(&demo2_thread1);
    thread t2(&demo2_thread2);
    t1.join();
    t2.join();

    for (size_t i = 0; i < vec_int.size(); ++i) {
        cout << "element " << i << " " << vec_int[i] << endl;
    }
    return 0;
}

　　

　　構建

cd build
cmake ..
make
./thread_test