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proc_tid_children(5) — Linux manual page

NAME | DESCRIPTION | SEE ALSO | COLOPHON 

proc_tid_children(5)       File Formats Manual       proc_tid_children(5)

NAME         top

       /proc/tid/children - child tasks

DESCRIPTION         top

       /proc/tid/children (since Linux 3.5)
              A space-separated list of child tasks of this task.  Each
              child task is represented by its TID.

              This option is intended for use by the checkpoint-restore
              (CRIU) system, and reliably provides a list of children
              only if all of the child processes are stopped or frozen.
              It does not work properly if children of the target task
              exit while the file is being read!  Exiting children may
              cause non-exiting children to be omitted from the list.
              This makes this interface even more unreliable than classic
              PID-based approaches if the inspected task and its children
              aren't frozen, and most code should probably not use this
              interface.

              Until Linux 4.2, the presence of this file was governed by
              the CONFIG_CHECKPOINT_RESTORE kernel configuration option.
              Since Linux 4.2, it is governed by the CONFIG_PROC_CHILDREN
              option.

SEE ALSO         top

       proc(5)

COLOPHON         top

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Linux man-pages 6.15            2025-05-17           proc_tid_children(5)

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