grb2015 / linux_c Goto Github PK

[root@grb_host 13_UDP_license]# hostname

•  grb_host
  

•  [root@grb_host 13_UDP_license]# ./dgsend grb_host 12345 aaa
  

•  make addr: Resource temporarily unavailable
  

•  [root@grb_host 13_UDP_license]#
  

•  bug: make addr: Resource temporarily unavailable
  

bug: you must set_mode(0)first before you reset set_mode(1)

when execute ./pwd print：
error looking for inum 1
运行错误：执行不正确，error looking for inum 1

[root@ 11_coroutine_and_socket]# ./2
Segmentation fault (core dumped)
[root@ 11_coroutine_and_socket]#

^\Quit (core dumped)

'ls' current ouput are:
drwxrwxrwx 1 root root 0 Apr 1 14:36 .
drwxrwxrwx 1 root root 0 Mar 31 11:10 ..
-rwxrwxrwx 1 root root 9860 Apr 1 14:36 ls
-rwxrwxrwx 1 root root 5279 Apr 1 14:36 ls.c

[root@localhost shell3]# ./sh1

ls -l
total 37
-rwxrwxrwx. 1 root root 792 Apr 27 22:12 execute.c
-rwxrwxrwx. 1 root root 10173 Apr 27 22:47 sh1
-rwxrwxrwx. 1 root root 10173 Apr 27 22:51 sh3
-rwxrwxrwx. 1 root root 1082 Apr 27 22:36 smsh1.c
-rwxrwxrwx. 1 root root 327 Apr 27 22:43 smsh.h
-rwxrwxrwx. 1 root root 3717 Apr 27 22:46 splitline.c
drwxrwxrwx. 1 root root 0 Apr 25 20:32 sriptdemo
Segmentation fault (core dumped)
[root@localhost shell3]#

issue1: [ 8_thread]1_create.c bug: 并没有打印出print_id,线程1没有被启动啊 #2
|* gcc 1_create.c -o 1 -lpthread
[root@grb_host 8_thread]# ./1
~ |* main thead id = 2078766848
~ |* [root@grb_host 8_thread]#
~ |*
~ |* bug: 并没有打印出print_id,线程1没有被启动啊

issue2:[10_IPC/4_NamedPipe server.c client.c] open(FIFO_WRITE,O_WRONLY)有问题 #3

通过gdb调试，发现
server.c 程序在wfd = open(FIFO_WRITE,O_WRONLY);会阻塞不动了。
client.c 程序在 if( (wfd = open(FIFO_WRITE,O_WRONLY)) == -1)会阻塞不动了。

issue3:[7_process] 1_fork.c 父进程先于子进程结束后，为什么子进程无法退出shell #1

bug :如果注释掉sleep(1),为什么子进程无法退出?(在我的计算机上调度是父进程先退出)
[root@grb_host 7_process]# ./1
I am parent process,mychild pid = 3368,mypid = 3367,myppid =3314
exit
[root@grb_host 7_process]# I am child process,mypid = 3368,myppid =1
exit

暂时不能支持第二个参数，指定目录

1. server
   grb-sim@xxx:~/github/LINUX_CMD/13_UDP_license/lisence_version1$ ./3_lisence_server1
2. client
   grb-sim@xxx:~/github/LINUX_CMD/13_UDP_license/lisence_version1$ ./3_lisence_client1
3. server
   SERVER: GOT: HELO 31536 Segmentation fault (core dumped)
   grb-sim@xxx:~/github/LINUX_CMD/13_UDP_license/lisence_version1$

server got Segmentation fault (core dumped) when client was connecting.

when the program rum to ctime , error occures.

程序编译后，当运行到printf( "%.12s ", 4+ctime(&info_p->st_mtime));后，发生错误。