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test/runtime/CompressedOops/UseCompressedOops.java
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rev 7602 : 8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
@@ -33,104 +33,148 @@
import com.oracle.java.testlibrary.*;
public class UseCompressedOops {
public static void main(String[] args) throws Exception {
+ testCompressedOopsModesGCs();
+ testCompressedOopsModesGCs("-XX:+UseLargePages");
+ }
+
+ public static void testCompressedOopsModesGCs(String... flags) throws Exception {
+ ArrayList<String> args = new ArrayList<>();
+ Collections.addAll(args, flags);
+
+ // Test default.
+ testCompressedOopsModes(args);
+ // Test GCs.
+ testCompressedOopsModes(args, "-XX:+UseG1GC");
+ testCompressedOopsModes(args, "-XX:+UseConcMarkSweepGC");
+ testCompressedOopsModes(args, "-XX:+UseSerialGC");
+ testCompressedOopsModes(args, "-XX:+UseParallelGC");
+ testCompressedOopsModes(args, "-XX:+UseParallelOldGC");
+ }
+
+ public static void testCompressedOopsModes(ArrayList<String> flags1, String... flags2) throws Exception {
+ ArrayList<String> args = new ArrayList<>();
+ args.addAll(flags1);
+ Collections.addAll(args, flags2);
if (Platform.is64bit()) {
// Explicitly turn of compressed oops
- testCompressedOops("-XX:-UseCompressedOops", "-Xmx32m")
+ testCompressedOops(args, "-XX:-UseCompressedOops", "-Xmx32m")
.shouldNotContain("Compressed Oops")
.shouldHaveExitValue(0);
// Compressed oops should be on by default
- testCompressedOops("-Xmx32m")
+ testCompressedOops(args, "-Xmx32m")
.shouldContain("Compressed Oops mode")
.shouldHaveExitValue(0);
// Explicly enabling compressed oops
- testCompressedOops("-XX:+UseCompressedOops", "-Xmx32m")
+ testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32m")
.shouldContain("Compressed Oops mode")
.shouldHaveExitValue(0);
// Skip the following three test cases if we're on OSX or Solaris.
//
// OSX doesn't seem to care about HeapBaseMinAddress and Solaris
// puts the heap way up, forcing different behaviour.
if (!Platform.isOSX() && !Platform.isSolaris()) {
// Larger than 4gb heap should result in zero based with shift 3
- testCompressedOops("-XX:+UseCompressedOops", "-Xmx5g")
+ testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx5g")
+ .shouldContain("Zero based")
+ .shouldContain("Oop shift amount: 3")
+ .shouldHaveExitValue(0);
+
+ // Larger than 3gb heap and HeapBaseMinAddress=1g should result in zero based with shift 3
+ testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx3200m", "-XX:HeapBaseMinAddress=1g")
.shouldContain("Zero based")
.shouldContain("Oop shift amount: 3")
.shouldHaveExitValue(0);
// Small heap above 4gb should result in zero based with shift 3
- testCompressedOops("-XX:+UseCompressedOops", "-Xmx32m", "-XX:HeapBaseMinAddress=4g")
+ testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32m", "-XX:HeapBaseMinAddress=4g")
.shouldContain("Zero based")
.shouldContain("Oop shift amount: 3")
.shouldHaveExitValue(0);
// Small heap above 32gb should result in non-zero based with shift 3
- testCompressedOops("-XX:+UseCompressedOops", "-Xmx32m", "-XX:HeapBaseMinAddress=32g")
+ testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32m", "-XX:HeapBaseMinAddress=32g")
+ .shouldContain("Non-zero disjoint base")
+ .shouldContain("Oop shift amount: 3")
+ .shouldHaveExitValue(0);
+
+ // Small heap above 32gb should result in non-zero based with shift 3
+ testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32m", "-XX:HeapBaseMinAddress=72704m")
.shouldContain("Non-zero based")
.shouldContain("Oop shift amount: 3")
.shouldHaveExitValue(0);
// 32gb heap with heap base above 64gb and object alignment set to 16 bytes should result
// in non-zero based with shift 4
- testCompressedOops("-XX:+UseCompressedOops", "-Xmx32g", "-XX:ObjectAlignmentInBytes=16",
+ testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32g", "-XX:ObjectAlignmentInBytes=16",
"-XX:HeapBaseMinAddress=64g")
- .shouldContain("Non-zero based")
+ .shouldContain("Non-zero disjoint base")
.shouldContain("Oop shift amount: 4")
.shouldHaveExitValue(0);
// 32gb heap with object alignment set to 16 bytes should result in zero based with shift 4
- testCompressedOops("-XX:+UseCompressedOops", "-Xmx32g", "-XX:ObjectAlignmentInBytes=16")
+ testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32g", "-XX:ObjectAlignmentInBytes=16")
.shouldContain("Zero based")
.shouldContain("Oop shift amount: 4")
.shouldHaveExitValue(0);
}
+ // This is a pathologic case for the heap allocation algorithm. Regression test.
+ // HeapBaseMinAddress must be 2g and should not be set on the command line.
+ testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx2g")
+ .shouldNotContain("Max heap size too large for Compressed Oops")
+ .shouldHaveExitValue(0);
+ testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx29g", "-XX:CompressedClassSpaceSize=1g")
+ .shouldNotContain("Max heap size too large for Compressed Oops")
+ .shouldHaveExitValue(0);
+
// Explicitly enabling compressed oops with 32gb heap should result a warning
- testCompressedOops("-XX:+UseCompressedOops", "-Xmx32g")
+ testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32g")
.shouldContain("Max heap size too large for Compressed Oops")
.shouldHaveExitValue(0);
// 32gb heap should not result a warning
- testCompressedOops("-Xmx32g")
+ testCompressedOops(args, "-Xmx32g")
.shouldNotContain("Max heap size too large for Compressed Oops")
.shouldHaveExitValue(0);
// Explicitly enabling compressed oops with 32gb heap and object
// alignment set to 8 byte should result a warning
- testCompressedOops("-XX:+UseCompressedOops", "-Xmx32g", "-XX:ObjectAlignmentInBytes=8")
+ testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32g", "-XX:ObjectAlignmentInBytes=8")
.shouldContain("Max heap size too large for Compressed Oops")
.shouldHaveExitValue(0);
// 64gb heap and object alignment set to 16 bytes should result in a warning
- testCompressedOops("-XX:+UseCompressedOops", "-Xmx64g", "-XX:ObjectAlignmentInBytes=16")
+ testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx64g", "-XX:ObjectAlignmentInBytes=16")
.shouldContain("Max heap size too large for Compressed Oops")
.shouldHaveExitValue(0);
} else {
// Compressed oops should only apply to 64bit platforms
- testCompressedOops("-XX:+UseCompressedOops", "-Xmx32m")
+ testCompressedOops(args, "-XX:+UseCompressedOops", "-Xmx32m")
.shouldContain("Unrecognized VM option 'UseCompressedOops'")
.shouldHaveExitValue(1);
}
}
- private static OutputAnalyzer testCompressedOops(String... flags) throws Exception {
+ private static OutputAnalyzer testCompressedOops(ArrayList<String> flags1, String... flags2) throws Exception {
ArrayList<String> args = new ArrayList<>();
// Always run with these three:
args.add("-XX:+UnlockDiagnosticVMOptions");
args.add("-XX:+PrintCompressedOopsMode");
args.add("-Xms32m");
// Add the extra flags
- Collections.addAll(args, flags);
+ args.addAll(flags1);
+ Collections.addAll(args, flags2);
args.add("-version");
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args.toArray(new String[0]));
return new OutputAnalyzer(pb.start());
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