8003237: G1: Reduce unnecessary (and failing) allocation attempts when handling an evacuation failure
Summary: Remember for every generation whether the memory for that generation has already been exhausted. If so, do not try to get a new region for these generations. Further, if the last generation is full, early exit from copy_to_survivor_space.
Reviewed-by: jmasa, brutisso
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/*
* @test
* @bug 8047290
* @summary Ensure that Monitor::lock_without_safepoint_check does not assert when it correctly acquires a lock which must never have safepoint checks.
* @library /testlibrary /../../test/lib
* @modules java.base/sun.misc
* java.management
* @build AssertSafepointCheckConsistency3
* @run main ClassFileInstaller sun.hotspot.WhiteBox
* sun.hotspot.WhiteBox$WhiteBoxPermission
* @run main AssertSafepointCheckConsistency3
*/
import jdk.test.lib.*;
import sun.hotspot.WhiteBox;
public class AssertSafepointCheckConsistency3 {
public static void main(String args[]) throws Exception {
if (args.length > 0) {
WhiteBox.getWhiteBox().assertMatchingSafepointCalls(false, true);
}
if (Platform.isDebugBuild()){
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-Xbootclasspath/a:.",
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+WhiteBoxAPI",
"-XX:-TransmitErrorReport",
"-XX:-CreateCoredumpOnCrash",
"-Xmx32m",
"AssertSafepointCheckConsistency3",
"test");
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldNotContain("assert");
output.shouldNotContain("never");
output.shouldNotContain("always");
}
}
}