NAME

       /proc/pid/timers - POSIX timers

DESCRIPTION

       /proc/pid/timers (since Linux 3.10)
              A  list  of  the POSIX timers for this process.  Each timer is listed with a line that starts with
              the string "ID:".  For example:

                  ID: 1
                  signal: 60/00007fff86e452a8
                  notify: signal/pid.2634
                  ClockID: 0
                  ID: 0
                  signal: 60/00007fff86e452a8
                  notify: signal/pid.2634
                  ClockID: 1

              The lines shown for each timer have the following meanings:

              ID     The ID for this timer.  This is not the same as the timer ID returned  by  timer_create(2);
                     rather, it is the same kernel-internal ID that is available via the si_timerid field of the
                     siginfo_t structure (see sigaction(2)).

              signal This  is  the  signal  number  that  this timer uses to deliver notifications followed by a
                     slash, and then the sigev_value value supplied to  the  signal  handler.   Valid  only  for
                     timers that notify via a signal.

              notify The  part  before  the  slash  specifies  the  mechanism  that  this  timer uses to deliver
                     notifications, and is one of "thread", "signal",  or  "none".   Immediately  following  the
                     slash is either the string "tid" for timers with SIGEV_THREAD_ID notification, or "pid" for
                     timers  that  notify  by other mechanisms.  Following the "." is the PID of the process (or
                     the kernel thread ID of the thread)  that will be delivered a signal if the timer  delivers
                     notifications via a signal.

              ClockID
                     This  field  identifies the clock that the timer uses for measuring time.  For most clocks,
                     this is a number that matches one of the user-space CLOCK_* constants exposed via <time.h>.
                     CLOCK_PROCESS_CPUTIME_ID  timers  display   with   a   value   of   -6   in   this   field.
                     CLOCK_THREAD_CPUTIME_ID timers display with a value of -2 in this field.

              This file is available only when the kernel was configured with CONFIG_CHECKPOINT_RESTORE.

SEE ALSO

       proc(5)

Linux man-pages 6.7                                2023-09-07                                 proc_pid_timers(5)