private static void testDynamicNumberOfGCThreads(String gcFlag) throws Exception {
// UseDynamicNumberOfGCThreads and TraceDynamicGCThreads enabled
String[] baseArgs = {
"-XX:+" + gcFlag,
"-Xmx10M",
"-XX:+UseDynamicNumberOfGCThreads",
"-Xlog:gc+task=trace",
GCTest.class.getName()
};
// Base test with gc and +UseDynamicNumberOfGCThreads:
ProcessBuilder pb_enabled = ProcessTools.createJavaProcessBuilder(baseArgs);
verifyDynamicNumberOfGCThreads(new OutputAnalyzer(pb_enabled.start()));
// Ensure it also works on uniprocessors or if user specifies -XX:ParallelGCThreads=1:
String[] extraArgs = {
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+ForceDynamicNumberOfGCThreads",
"-XX:ParallelGCThreads=1"
};
String[] finalArgs = new String[baseArgs.length + extraArgs.length];
System.arraycopy(extraArgs, 0, finalArgs, 0, extraArgs.length);
System.arraycopy(baseArgs, 0, finalArgs, extraArgs.length, baseArgs.length);
pb_enabled = ProcessTools.createJavaProcessBuilder(finalArgs);
verifyDynamicNumberOfGCThreads(new OutputAnalyzer(pb_enabled.start()));
// Turn on parallel reference processing
String[] parRefProcArg = {"-XX:+ParallelRefProcEnabled", "-XX:-ShowMessageBoxOnError"};
String[] parRefArgs = new String[baseArgs.length + parRefProcArg.length];
System.arraycopy(parRefProcArg, 0, parRefArgs, 0, parRefProcArg.length);
System.arraycopy(baseArgs, 0, parRefArgs, parRefProcArg.length, baseArgs.length);
pb_enabled = ProcessTools.createJavaProcessBuilder(parRefArgs);
verifyDynamicNumberOfGCThreads(new OutputAnalyzer(pb_enabled.start()));
}
/** Compile two module definitions used by the test, jdk.test and jdk.translet. */
public static void main(String[] args) throws Exception {
boolean compiled;
// Compile module jdk.test declaration
compiled = CompilerUtils.compile(SRC_DIR.resolve("jdk.test"), MODS_DIR.resolve("jdk.test"));
if (!compiled) {
throw new RuntimeException("Test failed to compile module jdk.test");
}
// Compile module jdk.translet declaration
compiled =
CompilerUtils.compile(
SRC_DIR.resolve("jdk.translet"),
MODS_DIR.resolve("jdk.translet"),
"--add-exports=jdk.test/test=jdk.translet",
"-p",
MODS_DIR.toString());
if (!compiled) {
throw new RuntimeException("Test failed to compile module jdk.translet");
}
// Sanity check that the test, jdk.test/test/MainGC.java,
// correctly walks module jdk.test's reads list and package
// test's, defined to module jdk.translet, export list at
// GC safepoints.
ProcessBuilder pb =
ProcessTools.createJavaProcessBuilder(
"-Xlog:modules=trace", "-p", MODS_DIR.toString(), "-m", "jdk.test/test.MainGC");
OutputAnalyzer oa = new OutputAnalyzer(pb.start());
oa.shouldContain("package test defined in module jdk.test, exports list being walked")
.shouldContain("module jdk.test reads list being walked")
.shouldHaveExitValue(0);
}
/** Check the result of segmented code cache related VM options. */
public static void main(String[] args) throws Exception {
ProcessBuilder pb;
// Disabled with ReservedCodeCacheSize < 240MB
pb =
ProcessTools.createJavaProcessBuilder(
"-XX:ReservedCodeCacheSize=239m", "-XX:+PrintCodeCache", "-version");
verifySegmentedCodeCache(pb, false);
// Disabled without TieredCompilation
pb =
ProcessTools.createJavaProcessBuilder(
"-XX:-TieredCompilation", "-XX:+PrintCodeCache", "-version");
verifySegmentedCodeCache(pb, false);
// Enabled with TieredCompilation and ReservedCodeCacheSize >= 240MB
pb =
ProcessTools.createJavaProcessBuilder(
"-XX:+TieredCompilation",
"-XX:ReservedCodeCacheSize=240m",
"-XX:+PrintCodeCache",
"-version");
verifySegmentedCodeCache(pb, true);
pb =
ProcessTools.createJavaProcessBuilder(
"-XX:+TieredCompilation",
"-XX:ReservedCodeCacheSize=400m",
"-XX:+PrintCodeCache",
"-version");
verifySegmentedCodeCache(pb, true);
// Always enabled if SegmentedCodeCache is set
pb =
ProcessTools.createJavaProcessBuilder(
"-XX:+SegmentedCodeCache",
"-XX:-TieredCompilation",
"-XX:ReservedCodeCacheSize=239m",
"-XX:+PrintCodeCache",
"-version");
verifySegmentedCodeCache(pb, true);
// The profiled and non-profiled code heaps should not be available in
// interpreter-only mode
pb =
ProcessTools.createJavaProcessBuilder(
"-XX:+SegmentedCodeCache", "-Xint", "-XX:+PrintCodeCache", "-version");
verifyCodeHeapNotExists(pb, PROFILED, NON_PROFILED);
// If we stop compilation at CompLevel_none or CompLevel_simple we
// don't need a profiled code heap.
pb =
ProcessTools.createJavaProcessBuilder(
"-XX:+SegmentedCodeCache",
"-XX:TieredStopAtLevel=0",
"-XX:+PrintCodeCache",
"-version");
verifyCodeHeapNotExists(pb, PROFILED);
pb =
ProcessTools.createJavaProcessBuilder(
"-XX:+SegmentedCodeCache",
"-XX:TieredStopAtLevel=1",
"-XX:+PrintCodeCache",
"-version");
verifyCodeHeapNotExists(pb, PROFILED);
// Fails with too small non-nmethod code heap size
pb = ProcessTools.createJavaProcessBuilder("-XX:NonNMethodCodeHeapSize=100K");
failsWith(pb, "Invalid NonNMethodCodeHeapSize");
// Fails if code heap sizes do not add up
pb =
ProcessTools.createJavaProcessBuilder(
"-XX:+SegmentedCodeCache",
"-XX:ReservedCodeCacheSize=10M",
"-XX:NonNMethodCodeHeapSize=5M",
"-XX:ProfiledCodeHeapSize=5M",
"-XX:NonProfiledCodeHeapSize=5M");
failsWith(pb, "Invalid code heap sizes");
// Fails if not enough space for VM internal code
long minUseSpace = WHITE_BOX.getUintxVMFlag("CodeCacheMinimumUseSpace");
// minimum size: CodeCacheMinimumUseSpace DEBUG_ONLY(* 3)
long minSize = (Platform.isDebugBuild() ? 3 : 1) * minUseSpace;
pb =
ProcessTools.createJavaProcessBuilder(
"-XX:+SegmentedCodeCache",
"-XX:ReservedCodeCacheSize=" + minSize,
"-XX:InitialCodeCacheSize=100K");
failsWith(pb, "Not enough space in non-nmethod code heap to run VM");
}
public static void runTest(String test, String result) throws Throwable {
ProcessBuilder pb =
ProcessTools.createJavaProcessBuilder("-cp", testsrc + File.separator + "test.jar", test);
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldContain("java.lang.ClassFormatError: Multiple " + result);
}