1 #!/bin/bash
 2 
 3 # Run with e.g. ./run-helloworld.sh
 4 
 5 set -euo pipefail
 6 
 7 # Look around for release JDK image
 8 J_LBE=
 9 if [ -d build/linux-x86_64-server-release/images/jdk/ ]; then
10   J_LBE=build/linux-x86_64-server-release/images/jdk/bin/java
11 elif [ -d build/linux-aarch64-server-release/images/jdk/ ]; then
12   J_LBE=build/linux-aarch64-server-release/images/jdk/bin/java
13 else
14   echo "Cannot find JDK"
15   exit 1
16 fi
17 
18 J_ML=
19 if [ -d jdk-mainline/ ]; then
20   J_ML=jdk-mainline/bin/java
21 fi
22 
23 OPTS="-XX:+UseShenandoahGC -Xmx8g -Xms8g -XX:+AlwaysPreTouch -XX:+UseTransparentHugePages -XX:-TieredCompilation -XX:+UnlockDiagnosticVMOptions -XX:ShenandoahGCMode=passive -XX:+UnlockExperimentalVMOptions"
24 
25 OPTS_ALL="$OPTS -XX:+ShenandoahLoadRefBarrier -XX:+ShenandoahSATBBarrier -XX:+ShenandoahCASBarrier -XX:+ShenandoahCloneBarrier"
26 
27 echo
28 echo ------
29 echo Hello World footprint:
30 
31 cat > Hello.java <<EOF
32 public class Hello {
33   public static void main(String... args) {
34      System.out.println("Hello World");
35   }
36 }
37 EOF
38 
39 run_with() {
40   P=$*
41   for I in `seq 1 3`; do
42     echo -n " run $I: "
43     $P -Xcomp -XX:+CITime Hello.java 2>&1 | grep "Tier4"
44   done
45 }
46 
47 if [ "x" != "x$J_ML" ]; then
48   echo
49   echo "Mainline: No barriers"
50   run_with $J_ML $OPTS
51 
52   echo
53   echo "Mainline: All barriers"
54   run_with $J_ML $OPTS_ALL
55 fi
56 
57 echo
58 echo "LBE: No barriers"
59 run_with $J_LBE $OPTS
60 
61 echo
62 echo "LBE: All barriers"
63 run_with $J_LBE $OPTS_ALL
64 
65 echo
66 echo "LBE: All barriers, no barrier elision"
67 run_with $J_LBE $OPTS_ALL -XX:-ShenandoahElideBarriers