b2g-ps

#!/system/bin/sh
# ps output is: user pid ppid vss rss wchan eip state cmdline
#
# b2g-ps is essentially a filtered ps. It only shows the b2g apps and also
# prepends each line with the name of the process.

report_oom=0

for arg in "$@"
  do
    case "$arg" in
      "--oom")
        report_oom=1
        ;;
      *)
        args="${args} ${arg}"
        ;;
    esac
  done

toolbox ps $args | (
  IFS= read header
  new_hdr="APPLICATION    SEC"
  if [ "${report_oom}" == "1" ]; then
    new_hdr="${new_hdr}  OOM_ADJ  OOM_SCORE  OOM_SCORE_ADJ "
  fi
  echo "${new_hdr} ${header}"
  #
  # Make a pass and figure out which processes are the b2g processes
  #
  while read user pid ppid rest; do
    pids="${pids} ${pid}"
    pid_user[${pid}]="${user}"
    pid_ppid[${pid}]="${ppid}"
    pid_rest[${pid}]="${rest}"
    if [ "${rest/*b2g*/b2g}" = "b2g" ]; then
        b2g[${pid}]=1
    fi
  done

  # This is the format of the output of "toolbox ps"
  #
  # USER     PID   PPID  VSIZE  RSS     WCHAN    PC         NAME
  # root      1     0     480    340   c013bfe4 00008728 S /init


  for pid in ${pids}; do
    ppid="${pid_ppid[${pid}]}"
    # If this thread/process is b2g or its parent is b2g then we output
    # it (using the -t option will cause toolbox ps to show all of threads)
    if [ "${b2g[${pid}]}" == "1" -o "${b2g[${ppid}]}" == "1" ]; then
      fmt_user="${pid_user[${pid}]}         "
      fmt_pid="${pid}     "
      fmt_ppid="${pid_ppid[${pid}]}     "
      comm=
      seccomp=
      while read statkey statval; do
        case $statkey in
          Name:) comm=$statval ;;
          Seccomp:) seccomp=$statval ;;
        esac
      done < /proc/${pid}/status
      comm="$comm                "
      new_fields="${comm:0:16} ${seccomp:-0}"
      line="${fmt_user:0:9} ${fmt_pid:0:5} ${fmt_ppid:0:5} ${pid_rest[${pid}]}"
      if [ "${report_oom}" == "1" ]; then
        oom_adj="   $(cat /proc/${pid}/oom_adj)    "
        oom_score="   $(cat /proc/${pid}/oom_score)      "
        oom_score_adj="    $(cat /proc/${pid}/oom_score_adj)         "
        new_fields="${new_fields}  ${oom_adj:0:7}  ${oom_score:0:9}  ${oom_score_adj:0:12}  "
      fi
      echo "${new_fields} ${line}"
    fi
  done
)