无法使用GDB附加到分叉子进程
我有 在远程系统上运行 从无法使用GDB附加到分叉子进程,gdb,fork,remote-debugging,gdbserver,Gdb,Fork,Remote Debugging,Gdbserver,我有 在远程系统上运行 从myfile.c中摘录的代码如下: gdbserver --multi :2345 那我就接通了 159: mppts_number = index; //-------------------------- FORK------------------------------------- pid = fork(); if (pid == -1) { //syslog(LOG_INFO,"Erro
myfile.c
中摘录的代码如下:
gdbserver --multi :2345
那我就接通了
159: mppts_number = index;
//-------------------------- FORK-------------------------------------
pid = fork();
if (pid == -1)
{
//syslog(LOG_INFO,"Error: Start Daemon failed (%s)\n");
return -1;
}
else if (!pid)
{
sleep(30);
...
}
else
{
return 0;
}
如果我这样做了
(gdb) target extended-remote 192.168.10.248:2345
Remote debugging using 192.168.10.248:2345
(gdb) set remote exec-file a.out
(gdb) file a.out
Reading symbols from a.out...done.
(gdb) b 159
Breakpoint 1 at 0x11384: file myfile.c, line 159.
(gdb) r
Starting program: MYPATH/a.out
Reading ...
...
Breakpoint 1, main (argc=1, argv=0x7efff7c4) at myfile.c:159
159 mppts_number = index;
(gdb) n
163 pid = fork();
(gdb) n
164 if (pid == -1)
(gdb) p pid
$1 = 10459
我在ps
中没有看到任何进程。在中间我可以看到
(gdb) attach 10459
A program is being debugged already. Kill it? (y or n) n
Not killed.
(gdb) continue
Continuing.
[Inferior 1 (process 10458) exited normally]
(gdb) attach 10459
Attaching to program: MYPATH, process 10459
Attaching to process 10459 failed
#ps auxf | grep a.out
根10458 0.0 0.1 1824 984分/0 t+22:28 0:00 | \\uuA.out
根10459 0.0.0点/0 Z+22:28 0:00 | \[a.out]
所以,我无法附加到子项目。我还可以这样做吗?啊,我需要在
fork
之前执行continue
,这样过程就不会停止
# ps auxf | grep a.out
root 10458 0.0 0.1 1824 984 pts/0 t+ 22:28 0:00 | \_ a.out
root 10459 0.0 0.0 0 0 pts/0 Z+ 22:28 0:00 | \_ [a.out] <defunct>