最近做專案要用到多執行緒的程式設計，又要用到opencv因此採用cmake生成makefile然後進行編譯的方法比較簡單。這裡給出多執行緒的簡單例項。

主函式非常簡單：

#include <iostream>  
#include <pthread.h>  
  
using namespace std;  
  
#define NUM_THREADS 2  
  
class Hello  
{  
public:  
    static void* say_hello( void* args )  
    {  
        cout << "hello...123" << endl;  
    }  
};  
  
int main()  
{  
    pthread_t tids[NUM_THREADS];  
    for( int i = 0; i < NUM_THREADS; ++i )  
    {  
        int ret = pthread_create( &tids[i], NULL, Hello::say_hello, NULL );  
        if( ret != 0 )  
        {  
            cout << "pthread_create error:error_code" << ret << endl;  
        }  
    }  
    pthread_exit( NULL );  
}  
 

CmakeList檔案如下（這裡沒有包含opencv 的相關部分）

project(test)   
add_executable(test main.cpp)  
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)
target_link_libraries(test Threads::Threads)
cmake_minimum_required(VERSION 2.8)

轉載請註明：

http://write.blog.csdn.net/postedit/51065789

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Beijing Institute of Technology-The University of British Columbia

China