Try this. syscall(SYS_gettid); This should return the value of task_struct->pid
Regards, Prabhu On Wed, Dec 29, 2010 at 11:00 PM, CP YEH <[email protected]> wrote: > Hi, > > I would like to know if I can obtain thread id of calling thread. Let > me clarify what I mean by this. > > First, here is task_struct from linux kernel code. > > struct task_struct { > struct list_head tasks; > pid_t pid; > pid_t tgid; > struct task_struct *group_leader; /* threadgroup leader */ > struct list_head thread_group; > }; > > I understand that getpid returns tgid and gettid via __NR_gettid > returns tid but according to manpage, it seems to me that it is same > as what I get from getpid(). > > Man page of gettid: > gettid() returns the thread ID of the current process. This is > equal to the > process ID (as returned by getpid(2)), unless the process is > part of a > thread group > > However, I would like to obtain pid of task_struct. Is there any way I > can get that information? > Thank you. > > YEH > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >
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