projects/linux·blob master · refs

79 lines · 2.1 KiB

1#!/bin/bash
2# Test java symbol
3
4# SPDX-License-Identifier: GPL-2.0
5# Leo Yan <[email protected]>, 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 ${PERF_INJ_DATA}
21}
22
23trap cleanup_files exit term int
24
25PERF_DIR=$(dirname "$(which perf)")
26if [ -e "$PWD/tools/perf/libperf-jvmti.so" ]; then
27 LIBJVMTI=$PWD/tools/perf/libperf-jvmti.so
28elif [ -e "$PWD/libperf-jvmti.so" ]; then
29 LIBJVMTI=$PWD/libperf-jvmti.so
30elif [ -e "$PERF_DIR/libperf-jvmti.so" ]; then
31 LIBJVMTI=$PERF_DIR/libperf-jvmti.so
32elif [ -e "$PREFIX/lib64/libperf-jvmti.so" ]; then
33 LIBJVMTI=$PREFIX/lib64/libperf-jvmti.so
34elif [ -e "$PREFIX/lib/libperf-jvmti.so" ]; then
35 LIBJVMTI=$PREFIX/lib/libperf-jvmti.so
36elif [ -e "/usr/lib/linux-tools-$(uname -a | awk '{ print $3 }' | sed -r 's/-generic//')/libperf-jvmti.so" ]; then
37 LIBJVMTI=/usr/lib/linux-tools-$(uname -a | awk '{ print $3 }' | sed -r 's/-generic//')/libperf-jvmti.so
38else
39 echo "Fail to find libperf-jvmti.so"
40
41 # JVMTI is a build option, skip the test if fail to find lib
42 exit 2
43fi
44
45cat <<EOF | perf record -k 1 -o $PERF_DATA jshell -s -J-agentpath:$LIBJVMTI
46int fib(int x) {
47 return x > 1 ? fib(x - 2) + fib(x - 1) : 1;
48}
49
50int q = 0;
51
52for (int i = 0; i < 10; i++)
53 q += fib(i);
54
55System.out.println(q);
56EOF
57
58if [ $? -ne 0 ]; then
59 echo "Fail to record for java program"
60 exit 1
61fi
62
63if ! DEBUGINFOD_URLS='' perf inject -i $PERF_DATA -o $PERF_INJ_DATA -j; then
64 echo "Fail to inject samples"
65 exit 1
66fi
67
68# Below is an example of the instruction samples reporting:
69# 8.18% jshell jitted-50116-29.so [.] Interpreter
70# 0.75% Thread-1 jitted-83602-1670.so [.] jdk.internal.jimage.BasicImageReader.getString(int)
71perf report --stdio -i ${PERF_INJ_DATA} 2>&1 | \
72 grep -E " +[0-9]+\.[0-9]+% .* (Interpreter|jdk\.internal).*" > /dev/null 2>&1
73
74if [ $? -ne 0 ]; then
75 echo "Fail to find java symbols"
76 exit 1
77fi
78
79exit 0