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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980#!/bin/bash# Test java symbol
# SPDX-License-Identifier: GPL-2.0# Leo Yan <leo.yan@linaro.org>, 2022
# skip if there's no jshellif ! [ -x "$(command -v jshell)" ]; then echo "skip: no jshell, install JDK" exit 2fi
PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)PERF_INJ_DATA=$(mktemp /tmp/__perf_test.perf.data.inj.XXXXX)
cleanup_files(){ echo "Cleaning up files..." rm -f ${PERF_DATA} rm -f ${PERF_INJ_DATA}}
trap cleanup_files exit term int
PERF_DIR=$(dirname "$(which perf)")if [ -e "$PWD/tools/perf/libperf-jvmti.so" ]; then LIBJVMTI=$PWD/tools/perf/libperf-jvmti.soelif [ -e "$PWD/libperf-jvmti.so" ]; then LIBJVMTI=$PWD/libperf-jvmti.soelif [ -e "$PERF_DIR/libperf-jvmti.so" ]; then LIBJVMTI=$PERF_DIR/libperf-jvmti.soelif [ -e "$PREFIX/lib64/libperf-jvmti.so" ]; then LIBJVMTI=$PREFIX/lib64/libperf-jvmti.soelif [ -e "$PREFIX/lib/libperf-jvmti.so" ]; then LIBJVMTI=$PREFIX/lib/libperf-jvmti.soelif [ -e "/usr/lib/linux-tools-$(uname -a | awk '{ print $3 }' | sed -r 's/-generic//')/libperf-jvmti.so" ]; then LIBJVMTI=/usr/lib/linux-tools-$(uname -a | awk '{ print $3 }' | sed -r 's/-generic//')/libperf-jvmti.soelse echo "Fail to find libperf-jvmti.so"
# JVMTI is a build option, skip the test if fail to find lib exit 2fi
cat <<EOF | perf record -k 1 -o $PERF_DATA jshell -s -J-agentpath:$LIBJVMTIint fib(int x) { return x > 1 ? fib(x - 2) + fib(x - 1) : 1;}
int q = 0;
for (int i = 0; i < 10; i++) q += fib(i);
System.out.println(q);EOF
if [ $? -ne 0 ]; then echo "Fail to record for java program" exit 1fi
if ! DEBUGINFOD_URLS='' perf inject -i $PERF_DATA -o $PERF_INJ_DATA -j; then echo "Fail to inject samples" exit 1fi
# Below is an example of the instruction samples reporting:# 8.18% jshell jitted-50116-29.so [.] Interpreter# 0.75% Thread-1 jitted-83602-1670.so [.] jdk.internal.jimage.BasicImageReader.getString(int)perf report --stdio -i ${PERF_INJ_DATA} 2>&1 | \ grep -E " +[0-9]+\.[0-9]+% .* (Interpreter|jdk\.internal).*" > /dev/null 2>&1
if [ $? -ne 0 ]; then echo "Fail to find java symbols" exit 1fi
exit 0