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Update sqm autorate

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Ycarus (Yannick Chabanois) 2023-07-07 20:02:40 +02:00
parent 8b270e7264
commit ecf0b89798
6 changed files with 407 additions and 253 deletions
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149
luci-app-sqm-autorate/root/usr/share/sqm-autorate/lib.sh Executable file
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#!/bin/bash
# lib.sh -- common functions for use by cake-autorate.sh
#
# This file is part of cake-autorate.
__set_e=0
if [[ ! ${-} =~ e ]]
then
set -e
__set_e=1
fi
if [[ -z "${__sleep_fd:-}" ]]
then
exec {__sleep_fd}<> <(:)
fi
typeof() {
# typeof -- returns the type of a variable
local type_sig
type_sig=$(declare -p "${1}" 2>/dev/null)
if [[ "${type_sig}" =~ "declare --" ]]
then
str_type "${1}"
elif [[ "${type_sig}" =~ "declare -a" ]]
then
printf "array"
elif [[ "${type_sig}" =~ "declare -A" ]]
then
printf "map"
else
printf "none"
fi
}
str_type() {
# str_type -- returns the type of a string
local -n str="${1}"
if [[ "${str}" =~ ^[0-9]+$ ]]
then
printf "integer"
elif [[ "${str}" =~ ^[0-9]*\.[0-9]+$ ]]
then
printf "float"
elif [[ "${str}" =~ ^-[0-9]+$ ]]
then
printf "negative-integer"
elif [[ "${str}" =~ ^-[0-9]*\.[0-9]+$ ]]
then
printf "negative-float"
else
# technically not validated, user is just trusted to call
# this function with valid strings
printf "string"
fi
}
sleep_s()
{
# Calling the external sleep binary could be rather slow,
# especially as it is called very frequently and typically on mediocre hardware.
#
# bash's loadable sleep module is not typically available
# in OpenWRT and most embedded systems, and use of the bash
# read command with a timeout offers performance that is
# at least on a par with bash's sleep module.
#
# For benchmarks, check the following links:
# - https://github.com/lynxthecat/cake-autorate/issues/174#issuecomment-1460057382
# - https://github.com/lynxthecat/cake-autorate/issues/174#issuecomment-1460074498
local sleep_duration_s=${1} # (seconds, e.g. 0.5, 1 or 1.5)
read -r -t "${sleep_duration_s}" -u "${__sleep_fd}" || true
}
sleep_us()
{
local sleep_duration_us=${1} # (microseconds)
sleep_duration_s=000000${sleep_duration_us}
sleep_duration_s=$((10#${sleep_duration_s::-6})).${sleep_duration_s: -6}
sleep_s "${sleep_duration_s}"
}
sleep_remaining_tick_time()
{
# sleeps until the end of the tick duration
local t_start_us=${1} # (microseconds)
local tick_duration_us=${2} # (microseconds)
# shellcheck disable=SC2154
sleep_duration_us=$(( t_start_us + tick_duration_us - ${EPOCHREALTIME/./} ))
if (( sleep_duration_us > 0 )); then
sleep_us "${sleep_duration_us}"
fi
}
randomize_array()
{
# randomize the order of the elements of an array
local -n array=${1}
subset=("${array[@]}")
array=()
for ((set=${#subset[@]}; set>0; set--))
do
idx=$((RANDOM%set))
array+=("${subset[idx]}")
unset "subset[idx]"
subset=("${subset[@]}")
done
}
terminate()
{
# Send regular kill to processes and monitor terminations;
# return as soon as all of the active processes terminate;
# if any processes remain active after one second, kill with fire using kill -9;
# and, finally, call wait on all processes to reap any zombie processes.
local pids=("${@:-}")
kill "${pids[@]}" 2> /dev/null
for((i=0; i<10; i++))
do
for process in "${!pids[@]}"
do
kill -0 "${pids[${process}]}" 2> /dev/null || unset "pids[${process}]"
done
[[ "${pids[*]}" ]] || return
sleep_s 0.1
done
kill -9 "${pids[@]}" 2> /dev/null
}
if (( __set_e == 1 ))
then
set +e
fi
unset __set_e