shell-profiler.sh revision 2535:fe226259b01d 
1#!/bin/bash
2#
3# Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
4# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5#
6# This code is free software; you can redistribute it and/or modify it
7# under the terms of the GNU General Public License version 2 only, as
8# published by the Free Software Foundation.
9#
10# This code is distributed in the hope that it will be useful, but WITHOUT
11# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13# version 2 for more details (a copy is included in the LICENSE file that
14# accompanied this code).
15#
16# You should have received a copy of the GNU General Public License version
17# 2 along with this work; if not, write to the Free Software Foundation,
18# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19#
20# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21# or visit www.oracle.com if you need additional information or have any
22# questions.
23#
24
25# Usage: sh shell-tracer.sh <TIME_CMD_TYPE> <TIME_CMD> <OUTPUT_FILE> <shell command line>
26#
27# This shell script is supposed to be set as a replacement for SHELL in make,
28# causing it to be called whenever make wants to execute shell commands.
29# The <shell command line> is suitable for passing on to the old shell,
30# typically beginning with -c.
31#
32# This script will run the shell command line and it will also store a simple
33# log of the the time it takes to execute the command in the OUTPUT_FILE, using
34# utility for time measure specified with TIME_CMD option.
35#
36# Type of time measure utility is specified with TIME_CMD_TYPE option.
37# Recognized options values of TIME_CMD_TYPE option: "gnutime", "flock".
38
39TIME_CMD_TYPE="$1"
40TIME_CMD="$2"
41OUTPUT_FILE="$3"
42shift
43shift
44shift
45if [ "$TIME_CMD_TYPE" = "gnutime" ]; then
46  # Escape backslashes (\) and percent chars (%). See man for GNU 'time'.
47  msg=${@//\\/\\\\}
48  msg=${msg//%/%%}
49  "$TIME_CMD" -f "[TIME:%E] $msg" -a -o "$OUTPUT_FILE" "$@"
50elif [ "$TIME_CMD_TYPE" = "flock" ]; then
51  # Emulated GNU 'time' with 'flock' and 'date'.
52  ts=`date +%s%3N`
53  "$@"
54  status=$?
55  ts2=`date +%s%3N`
56  millis=$((ts2 - ts))
57  ms=$(($millis % 1000))
58  seconds=$((millis / 1000))
59  ss=$(($seconds % 60))
60  minutes=$(($seconds / 60))
61  mm=$(($minutes % 60))
62  hh=$(($minutes / 60)):
63  [ $hh != "0:" ] || hh=
64  # Synchronize on this script.
65  flock -w 10 "$0" printf "[TIME:${hh}${mm}:${ss}.%.2s] %s\n" $ms "$*" >> "$OUTPUT_FILE" || true
66  exit $status
67else
68  "$@"
69fi
70