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 <ntdev74@xxxxxxxxx> 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
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