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8284161: Implementation of Virtual Threads (Preview)

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Co-authored-by: Ron Pressler <rpressler@openjdk.org>
Co-authored-by: Alan Bateman <alanb@openjdk.org>
Co-authored-by: Erik Österlund <eosterlund@openjdk.org>
Co-authored-by: Andrew Haley <aph@openjdk.org>
Co-authored-by: Rickard Bäckman <rbackman@openjdk.org>
Co-authored-by: Markus Grönlund <mgronlun@openjdk.org>
Co-authored-by: Leonid Mesnik <lmesnik@openjdk.org>
Co-authored-by: Serguei Spitsyn <sspitsyn@openjdk.org>
Co-authored-by: Chris Plummer <cjplummer@openjdk.org>
Co-authored-by: Coleen Phillimore <coleenp@openjdk.org>
Co-authored-by: Robbin Ehn <rehn@openjdk.org>
Co-authored-by: Stefan Karlsson <stefank@openjdk.org>
Co-authored-by: Thomas Schatzl <tschatzl@openjdk.org>
Co-authored-by: Sergey Kuksenko <skuksenko@openjdk.org>
Reviewed-by: lancea, eosterlund, rehn, sspitsyn, stefank, tschatzl, dfuchs, lmesnik, dcubed, kevinw, amenkov, dlong, mchung, psandoz, bpb, coleenp, smarks, egahlin, mseledtsov, coffeys, darcy
This commit is contained in:
Alan Bateman 2022-05-07 08:06:16 +00:00
parent 5212535a27
commit 9583e3657e
1133 changed files with 95935 additions and 8335 deletions
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23
src/java.base/share/classes/java/util/jar/JarFile.java
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@ -27,6 +27,7 @@ package java.util.jar;
import jdk.internal.access.SharedSecrets;
import jdk.internal.access.JavaUtilZipFileAccess;
import jdk.internal.misc.ThreadTracker;
import sun.security.action.GetPropertyAction;
import sun.security.util.ManifestEntryVerifier;
@ -44,10 +45,8 @@ import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;
import java.util.Locale;
import java.util.NoSuchElementException;
import java.util.Objects;
import java.util.function.Function;
import java.util.stream.Stream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
@ -150,7 +149,6 @@ public class JarFile extends ZipFile {
private static final Runtime.Version RUNTIME_VERSION;
private static final boolean MULTI_RELEASE_ENABLED;
private static final boolean MULTI_RELEASE_FORCED;
private static final ThreadLocal<Boolean> isInitializing = new ThreadLocal<>();
// The maximum size of array to allocate. Some VMs reserve some header words in an array.
private static final int MAX_ARRAY_SIZE = Integer.MAX_VALUE - 8;
@ -1036,6 +1034,18 @@ public class JarFile extends ZipFile {
}
}
private static class ThreadTrackHolder {
static final ThreadTracker TRACKER = new ThreadTracker();
}
private static Object beginInit() {
return ThreadTrackHolder.TRACKER.begin();
}
private static void endInit(Object key) {
ThreadTrackHolder.TRACKER.end(key);
}
synchronized void ensureInitialization() {
try {
maybeInstantiateVerifier();
@ -1043,19 +1053,18 @@ public class JarFile extends ZipFile {
throw new RuntimeException(e);
}
if (jv != null && !jvInitialized) {
isInitializing.set(Boolean.TRUE);
Object key = beginInit();
try {
initializeVerifier();
jvInitialized = true;
} finally {
isInitializing.set(Boolean.FALSE);
endInit(key);
}
}
}
static boolean isInitializing() {
Boolean value = isInitializing.get();
return (value == null) ? false : value;
return ThreadTrackHolder.TRACKER.contains(Thread.currentThread());
}
/*