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NAME | DESCRIPTION | SEE ALSO | COLOPHON |
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proc_pid_timers(5) File Formats Manual proc_pid_timers(5)
/proc/pid/timers - POSIX timers
/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.
proc(5)
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user-space interface documentation) project. Information about
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for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
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2025-08-11. If you discover any rendering problems in this HTML
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Linux man-pages 6.15 2025-05-17 proc_pid_timers(5)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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