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添加对Linux平台多线程单例模式调用的支持

master
ichdream 2021-09-10 15:22:43 +08:00
parent 92a17eed14
commit 2c293e434b
2 changed files with 36 additions and 9 deletions
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2
06.Singleton/2.Code/Singleton/Singleton.h
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@ -13,7 +13,7 @@ public:
if (instance == NULL){ if (instance == NULL){
m_mutex.lock(); m_mutex.lock();
if (instance == NULL){ if (instance == NULL){
printf("创建新的实例\n"); printf("创建新的实例\n");
instance = new Singleton(); instance = new Singleton();
} }
m_mutex.unlock(); m_mutex.unlock();

41
06.Singleton/2.Code/Singleton/main.cpp
View File

@ -1,7 +1,7 @@
#include <iostream> #include <iostream>
#include "Singleton.h" #include "Singleton.h"
/*单例模式简单实现*/ /*单例模式简单实现*/
/* /*
int main() int main()
{ {
@ -13,11 +13,12 @@ int main()
} }
*/ */
/*非线程安全 单例模式*/ #ifdef win32
/*非线程安全 单例模式*/
#include <process.h> #include <process.h>
#include <Windows.h> #include <Windows.h>
//多线程，线程数目：5 //多线程，线程数目：5
#define THREAD_NUM 5 #define THREAD_NUM 5
unsigned int __stdcall CallSingleton(void *pPM) unsigned int __stdcall CallSingleton(void *pPM)
@ -25,7 +26,7 @@ unsigned int __stdcall CallSingleton(void *pPM)
Singleton *s = Singleton::getInstance(); Singleton *s = Singleton::getInstance();
int nThreadNum = *(int *)pPM; int nThreadNum = *(int *)pPM;
Sleep(50); Sleep(50);
//printf("线程编号为%d\n", nThreadNum); //printf("线程编号为%d\n", nThreadNum);
return 0; return 0;
} }
@ -34,17 +35,43 @@ int main()
{ {
HANDLE handle[THREAD_NUM]; HANDLE handle[THREAD_NUM];
//线程编号 //线程编号
int threadNum = 0; int threadNum = 0;
while (threadNum < THREAD_NUM) while (threadNum < THREAD_NUM)
{ {
handle[threadNum] = (HANDLE)_beginthreadex(NULL, 0, CallSingleton, &threadNum, 0, NULL); handle[threadNum] = (HANDLE)_beginthreadex(NULL, 0, CallSingleton, &threadNum, 0, NULL);
//等子线程接收到参数时主线程可能改变了这个i的值 //等子线程接收到参数时主线程可能改变了这个i的值
threadNum++; threadNum++;
} }
//保证子线程已全部运行结束 //保证子线程已全部运行结束
WaitForMultipleObjects(THREAD_NUM, handle, TRUE, INFINITE); WaitForMultipleObjects(THREAD_NUM, handle, TRUE, INFINITE);
system("pause"); system("pause");
return 0; return 0;
} }
/* for linux platform */
#else
#define THREAD_NUM 5
#include<pthread.h>
void* callSingleton(void *pPM)
{
Singleton *s = Singleton::getInstance();
pthread_t nThreadNum = pthread_self();
// sleep(50);
printf("线程编号为%ld\n", nThreadNum);
return 0;
}
int main()
{
pthread_t threads_pool[THREAD_NUM];
int tids[THREAD_NUM];
for(int i = 0; i < THREAD_NUM; i++)
{
tids[i] = pthread_create(&threads_pool[i], NULL, callSingleton, NULL);
pthread_join(threads_pool[i], (void**)&tids[i]);
}
return 0;
}
#endif