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1#!/bin/bash
2# Copyright (c) 2017, the R8 project authors. Please see the AUTHORS file
3# for details. All rights reserved. Use of this source code is governed by a
4# BSD-style license that can be found in the LICENSE file.
5#
6# Tracks the peak resident memory being used by running the supplied command.
7# The output is written to the first argument of the script every second.
8
9function Logger() {
10  output="$1"
11  while sleep 1
12  do
13    grep "VmHWM\|Threads" /proc/$pid/status >> $output
14  done
15}
16
17function Exit {
18  kill $lid
19  exit 0
20}
21
22function Kill {
23  kill $lid
24  kill -9 $pid
25  exit -1
26}
27
28if [ $# -lt 2 ]; then
29   echo "Takes at least two arguments"
30   exit 1
31fi
32OUTPUT_FILE=$1
33shift 1
34
35$* &
36pid=$!
37
38Logger $OUTPUT_FILE &
39lid=$!
40
41trap "Exit" EXIT
42trap "Kill" SIGINT
43wait $pid
44