--- a/hotspot/src/share/vm/runtime/arguments.cpp Wed Jun 24 05:45:50 2015 -0400
+++ b/hotspot/src/share/vm/runtime/arguments.cpp Wed Jun 24 11:58:34 2015 +0200
@@ -1535,7 +1535,11 @@
if (should_auto_select_low_pause_collector()) {
FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true);
} else {
+#if defined(JAVASE_EMBEDDED)
FLAG_SET_ERGO(bool, UseParallelGC, true);
+#else
+ FLAG_SET_ERGO(bool, UseG1GC, true);
+#endif
}
} else {
FLAG_SET_ERGO(bool, UseSerialGC, true);
--- a/hotspot/test/gc/arguments/TestSelectDefaultGC.java Wed Jun 24 05:45:50 2015 -0400
+++ b/hotspot/test/gc/arguments/TestSelectDefaultGC.java Wed Jun 24 11:58:34 2015 +0200
@@ -36,11 +36,6 @@
import java.util.regex.*;
public class TestSelectDefaultGC {
- public static boolean versionStringContains(OutputAnalyzer output, String pattern) {
- Matcher matcher = Pattern.compile(pattern, Pattern.MULTILINE).matcher(output.getStderr());
- return matcher.find();
- }
-
public static void assertVMOption(OutputAnalyzer output, String option, boolean value) {
output.shouldMatch(" " + option + " .*=.* " + value + " ");
}
@@ -51,14 +46,18 @@
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldHaveExitValue(0);
- boolean isServerVM = versionStringContains(output, "Server VM");
+ boolean isServerVM = Platform.isServer();
+ boolean isEmbeddedVM = Platform.isEmbedded();
// Verify GC selection
- assertVMOption(output, "UseParallelGC", isServerVM);
- assertVMOption(output, "UseParallelOldGC", isServerVM);
+ // G1 is default for non-embedded server VMs
+ assertVMOption(output, "UseG1GC", isServerVM && !isEmbeddedVM);
+ // Parallel is default for embedded server VMs
+ assertVMOption(output, "UseParallelGC", isServerVM && isEmbeddedVM);
+ assertVMOption(output, "UseParallelOldGC", isServerVM && isEmbeddedVM);
+ // Serial is default for non-server VMs
assertVMOption(output, "UseSerialGC", !isServerVM);
assertVMOption(output, "UseConcMarkSweepGC", false);
- assertVMOption(output, "UseG1GC", false);
assertVMOption(output, "UseParNewGC", false);
}
}