1#!/bin/bash
2# Test java symbol
3
4# SPDX-License-Identifier: GPL-2.0
5# Leo Yan <leo.yan@linaro.org>, 2022
6
7# skip if there's no jshell
8if ! [ -x "$(command -v jshell)" ]; then
9	echo "skip: no jshell, install JDK"
10	exit 2
11fi
12
13PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
14PERF_INJ_DATA=$(mktemp /tmp/__perf_test.perf.data.inj.XXXXX)
15
16cleanup_files()
17{
18	echo "Cleaning up files..."
19	rm -f ${PERF_DATA}
20	rm -f ${PERF_INJ_DATA}
21}
22
23trap cleanup_files exit term int
24
25if [ -e "$PWD/tools/perf/libperf-jvmti.so" ]; then
26	LIBJVMTI=$PWD/tools/perf/libperf-jvmti.so
27elif [ -e "$PWD/libperf-jvmti.so" ]; then
28	LIBJVMTI=$PWD/libperf-jvmti.so
29elif [ -e "$PREFIX/lib64/libperf-jvmti.so" ]; then
30	LIBJVMTI=$PREFIX/lib64/libperf-jvmti.so
31elif [ -e "$PREFIX/lib/libperf-jvmti.so" ]; then
32	LIBJVMTI=$PREFIX/lib/libperf-jvmti.so
33elif [ -e "/usr/lib/linux-tools-$(uname -a | awk '{ print $3 }' | sed -r 's/-generic//')/libperf-jvmti.so" ]; then
34	LIBJVMTI=/usr/lib/linux-tools-$(uname -a | awk '{ print $3 }' | sed -r 's/-generic//')/libperf-jvmti.so
35else
36	echo "Fail to find libperf-jvmti.so"
37	# JVMTI is a build option, skip the test if fail to find lib
38	exit 2
39fi
40
41cat <<EOF | perf record -k 1 -o $PERF_DATA jshell -s -J-agentpath:$LIBJVMTI
42int fib(int x) {
43	return x > 1 ? fib(x - 2) + fib(x - 1) : 1;
44}
45
46int q = 0;
47
48for (int i = 0; i < 10; i++)
49	q += fib(i);
50
51System.out.println(q);
52EOF
53
54if [ $? -ne 0 ]; then
55	echo "Fail to record for java program"
56	exit 1
57fi
58
59if ! perf inject -i $PERF_DATA -o $PERF_INJ_DATA -j; then
60	echo "Fail to inject samples"
61	exit 1
62fi
63
64# Below is an example of the instruction samples reporting:
65#   8.18%  jshell           jitted-50116-29.so    [.] Interpreter
66#   0.75%  Thread-1         jitted-83602-1670.so  [.] jdk.internal.jimage.BasicImageReader.getString(int)
67perf report --stdio -i ${PERF_INJ_DATA} 2>&1 | \
68	grep -E " +[0-9]+\.[0-9]+% .* (Interpreter|jdk\.internal).*" > /dev/null 2>&1
69
70if [ $? -ne 0 ]; then
71	echo "Fail to find java symbols"
72	exit 1
73fi
74
75exit 0
76