找aix下线程编程的高手

小开ye

在程序执行的时候按Ctrl+C，产生了core。
请教是怎么会事？应该怎么处理
#include <stdio.h>;
#include <errno.h>;
#include <sys/types.h>;
#include <sys/socket.h>;
#include <sys/signal.h>;
#include <sys/select.h>;
#include <sys/sem.h>;
#include <netinet/in.h>;
#include <pthread.h>;

pthread_mutex_t mutex;
pthread_cond_t  cond;
pthread_t       tid, tid2, tid3;

void *thread_start(void *arg)
{

  while(1)
  {
   pthread_mutex_lock(&mutex);

    if( pthread_cond_wait(&cond,&mutex) == EINTR )
    {
      printf("eintr...............\n";
    }
    pthread_mutex_unlock(&mutex);
  }
  pthread_exit(0);
}

void killHandle(int signo)
{
  printf("get here.\n";
  pthread_mutex_destroy(&mutex);
  pthread_cond_destroy(&cond);
  exit(-2);
}
int createthread(void)
{

  pthread_mutex_init(&mutex,NULL);
  pthread_cond_init(&cond, NULL);
  
  pthread_create(&tid, NULL, thread_start, NULL);

  pthread_create(&tid2, NULL, thread_start, NULL);
  pthread_create(&tid3, NULL, thread_start, NULL);
  
}
int main(void)
{
  int sockfd   = -1;
  int ret      = 0;
  int listenfd = 0;
  struct sockaddr_in server_addr;
  

  signal(SIGTERM, killHandle);
  signal(SIGINT,  killHandle);
  signal(SIGPIPE, killHandle);
  
  createthread();
  
  sockfd = socket(AF_INET, SOCK_STREAM, 0 );
  if( sockfd == -1 )
  {
    printf("getSocket:socket create error.\n";
    return -1;
  }
  
  server_addr.sin_family      = AF_INET;
  server_addr.sin_port        = htons(50001);
  server_addr.sin_addr.s_addr = INADDR_ANY;
  bzero(&(server_addr.sin_zero), ;

  ret = bind(sockfd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr));
  if( ret == -1 )
  {
    printf("getSocket:socket bind error.\n";
    return -1;
  }
  listenfd = listen(sockfd, 120);
   

  for( ;; )
  {
    printf("main:get here 1\n";   
    ret = select(sockfd+1, NULL, NULL, NULL, NULL);
    if( ret == EINTR )
    {
      printf("main: eintr\n";
      return 0;
    }
    printf("main:get here 2\n";   
  }   
  return 0;
}

yftty

what's the debug msg of the core ?

小开ye

Segmentation fault in spin_lock_global_ppc_up at 0xd0019828
0xd0019828 (spin_lock_global_ppc_up+0x 90c40154        stw   r6,0x154(r4)

等待楼上仁兄的答案，谢谢

小开ye

我现在把子线程的中断信号屏蔽了，这样只让父线程获得中断信号，就没有问题了。前几天可能是我在屏蔽信号的时候写错了代码，所以没有看到效果。
谢谢大家！

yftty

oh, seems your killHandle( ) destroy the mutex before all threads can be exited.

After KillHandle( ), mutex is a invalid address, then further address invoke Segmentation fault.

In KillHandle( ), first killall all threads, then destroy the mutex.

I'm not sure about it, but I feel it is worthy a try



And what's the output of "where" in debuger ?

yftty

Also do you have AIX's native c compiler ?

Currently I'm developing  an AIX PCI device driver. Always encounter error on BUS attached I/O, and I doubt if it is the problem of Gcc I used. If you have it, pls help me

小开ye

(dbx) where
_vp_sleep(??, ??) at 0xd0012908
_usched_dispatch(??, ??, ??) at 0xd0010fe8

你说的很有道理，我也知道这个原因，问题在kill all thread的时候没有找到很好的方法。

小开ye

另：不好意思，我在主机上没有找到Gcc
只有C for AIX Compiler, Version 6和C for AIX Compiler, Version 5
我没有编译器的安装软件，sorry！
如果你是想让我做个测试，乐意帮忙！

yftty

where are you then, bj ?

小开ye

现在在上海！
一个到处飘的人，就差北京没去了，说不出来是遗憾还是其他什么了。