#include<pthread.h>
#include<sys/stat.h>
#include<fcntl.h>
#include<unistd.h>
#include<stdlib.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<stdio.h>
#include<math.h>
#include<sys/uio.h>
#include<time.h>
#include<string.h>
#include<sys/timeb.h>
#include <netinet/tcp.h>
#include <semaphore.h>
#include <signal.h>
#include <sys/syscall.h>


volatile int lock = 0;
int glbint = 0 ;
struct Mars_
{
    int glbintx1  ;
    char pad[64] ;
    int glbintx2  ;
};
struct Mars_ Mval ;

pthread_mutex_t Mutex1 = PTHREAD_MUTEX_INITIALIZER;
pthread_spinlock_t spinlock ;
pthread_spinlock_t spinlock1 ;
pthread_spinlock_t spinlock2 ;

pid_t gettid( void )
{
    return syscall( __NR_gettid );
}

void *thread1F(void *param)
{
    int i ;
    int proc_num = (int)(long)param ;
    cpu_set_t set;

    CPU_ZERO( &set );
    CPU_SET( proc_num, &set );

    if (sched_setaffinity( gettid(), sizeof( cpu_set_t ), &set ))
    {
        perror( "sched_setaffinity" );
        return NULL;
    }

    for(i=0;i<100000000;i++)
    {
        pthread_spin_lock(&spinlock1);
        Mval.glbintx1 = Mval.glbintx1 + 1 ;
        pthread_spin_unlock(&spinlock1);
        /*
        pthread_spin_lock(&spinlock);
        glbint = glbint + 1 ;
        pthread_spin_unlock(&spinlock);
        */
        /*
        pthread_mutex_lock(&Mutex1);
        glbint = glbint + 1 ;
        pthread_mutex_unlock(&Mutex1);
        */
        /*
        __sync_add_and_fetch(&glbint, 1) ;
        */
        /*
        while (__sync_lock_test_and_set(&lock, 1))
            while (lock)
                ;
        glbint = glbint + 1 ;
        __sync_lock_release(&lock);
        */
    }//for
}

void *thread2F(void *param)
{
    int i ;
    int proc_num = (int)(long)param ;
    cpu_set_t set;

    CPU_ZERO( &set );
    CPU_SET( proc_num, &set );

    if (sched_setaffinity( gettid(), sizeof( cpu_set_t ), &set ))
    {
        perror( "sched_setaffinity" );
        return NULL;
    }

    for(i=0;i<100000000;i++)
    {
        pthread_spin_lock(&spinlock2);
        Mval.glbintx2 = Mval.glbintx2 + 1 ;
        pthread_spin_unlock(&spinlock2);
        /*
        pthread_spin_lock(&spinlock);
        glbint = glbint + 1 ;
        pthread_spin_unlock(&spinlock);
       */
        /*
        pthread_mutex_lock(&Mutex1);
        glbint = glbint + 1 ;
        pthread_mutex_unlock(&Mutex1);
        */
        /*
        __sync_add_and_fetch(&glbint, 1) ;
        */
        /*
        while (__sync_lock_test_and_set(&lock, 1))
            while (lock)
                ;
        glbint = glbint + 1 ;
        __sync_lock_release(&lock);
        */

    }//for
}

int main (int argc, char *argv[])
{
    pthread_t tid[2] ;
    pthread_spin_init(&spinlock, 0);
    pthread_spin_init(&spinlock1, 0);
    pthread_spin_init(&spinlock2, 0);

    pthread_create(&tid[0] , NULL, thread1F, (void*)(long)0);
    pthread_create(&tid[1] , NULL, thread2F, (void*)(long)1);

    pthread_join(tid[0], NULL );
    pthread_join(tid[1], NULL );
    printf("glbint=(%d)\n",glbint) ;
    printf("glbintx=(%d)(%d)\n",Mval.glbintx1,Mval.glbintx2) ;
}

 

創作者介紹
創作者 hedgezzz 的頭像
hedgezzz

hedgezzz的部落格

hedgezzz 發表在 痞客邦 留言(0) 人氣()