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原来的main.cpp多线程执行的时候有bug，实际执行的是单线程

master
ichdream 2021-09-10 16:37:10 +08:00
parent e0c7e3db25
commit 0239628ce4
1 changed files with 30 additions and 14 deletions
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44
06.Singleton/2.Code/Singleton/main.cpp
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@ -51,18 +51,18 @@ int main()
}
/* for linux platform */
#else
#define THREAD_NUM 5
#define THREAD_NUM 6
#include<pthread.h>
void* callSingleton_Lazy(void *pPM)
void* callSingleton_Lazy(void*)
{
Singleton_Lazy *s = Singleton_Lazy::getInstance();
pthread_t nThreadNum = pthread_self();
// sleep(50);
printf("线程编号为%ld\n", nThreadNum);
printf("线程编号为%lu\n", nThreadNum);
return 0;
}
void* callSingleton_Hungry(void *pPM)
void* callSingleton_Hungry(void*)
{
Singleton_Hungry *s = Singleton_Hungry::getInstance();
pthread_t nThreadNum = pthread_self();
@ -74,21 +74,37 @@ void* callSingleton_Hungry(void *pPM)
int main()
{
pthread_t threads_pool[THREAD_NUM];
int tids[THREAD_NUM];
printf("Singleton Lazy mode:\n");
for(int i = 0; i < THREAD_NUM; i++)
int tids[THREAD_NUM], i;
void* status;
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
for(i = 0; i < THREAD_NUM; i++)
{
tids[i] = pthread_create(&threads_pool[i], NULL, callSingleton_Lazy, NULL);
pthread_join(threads_pool[i], (void**)&tids[i]);
if(i < THREAD_NUM / 2)
tids[i] = pthread_create(&threads_pool[i], NULL, callSingleton_Lazy, (void*)&i);
else
tids[i] = pthread_create(&threads_pool[i], NULL, callSingleton_Hungry, (void*)&i);
if(tids[i])
{
printf("Error: unable to create thread.\n");
exit(-1);
}
}
printf("Singleton Hungry mode:\n");
for(int i = 0; i < THREAD_NUM; i++)
pthread_attr_destroy(&attr);
for(i = 0; i < THREAD_NUM; i++)
{
tids[i] = pthread_create(&threads_pool[i], NULL, callSingleton_Hungry, NULL);
pthread_join(threads_pool[i], (void**)&tids[i]);
tids[i] = pthread_join(threads_pool[i], &status);
if(tids[i])
{
printf("Error: unable to join.\n");
exit(-1);
}
}
printf("main exiting.\n");
return 0;
}