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8336254: Virtual thread implementation + test updates

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Reviewed-by: sspitsyn, kevinw
This commit is contained in:
Alan Bateman 2024-07-25 04:59:01 +00:00
parent d3e51daf73
commit 6e228ce382
39 changed files with 2741 additions and 1363 deletions
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24
src/java.base/share/classes/java/util/concurrent/locks/LockSupport.java
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@ -35,7 +35,9 @@
package java.util.concurrent.locks;
import jdk.internal.misc.VirtualThreads;
import java.util.concurrent.TimeUnit;
import jdk.internal.access.JavaLangAccess;
import jdk.internal.access.SharedSecrets;
import jdk.internal.misc.Unsafe;
/**
@ -176,7 +178,7 @@ public class LockSupport {
public static void unpark(Thread thread) {
if (thread != null) {
if (thread.isVirtual()) {
VirtualThreads.unpark(thread);
JLA.unparkVirtualThread(thread);
} else {
U.unpark(thread);
}
@ -216,7 +218,7 @@ public class LockSupport {
setBlocker(t, blocker);
try {
if (t.isVirtual()) {
VirtualThreads.park();
JLA.parkVirtualThread();
} else {
U.park(false, 0L);
}
@ -264,7 +266,7 @@ public class LockSupport {
setBlocker(t, blocker);
try {
if (t.isVirtual()) {
VirtualThreads.park(nanos);
JLA.parkVirtualThread(nanos);
} else {
U.park(false, nanos);
}
@ -311,11 +313,7 @@ public class LockSupport {
Thread t = Thread.currentThread();
setBlocker(t, blocker);
try {
if (t.isVirtual()) {
VirtualThreads.parkUntil(deadline);
} else {
U.park(true, deadline);
}
parkUntil(deadline);
} finally {
setBlocker(t, null);
}
@ -366,7 +364,7 @@ public class LockSupport {
*/
public static void park() {
if (Thread.currentThread().isVirtual()) {
VirtualThreads.park();
JLA.parkVirtualThread();
} else {
U.park(false, 0L);
}
@ -405,7 +403,7 @@ public class LockSupport {
public static void parkNanos(long nanos) {
if (nanos > 0) {
if (Thread.currentThread().isVirtual()) {
VirtualThreads.park(nanos);
JLA.parkVirtualThread(nanos);
} else {
U.park(false, nanos);
}
@ -444,7 +442,8 @@ public class LockSupport {
*/
public static void parkUntil(long deadline) {
if (Thread.currentThread().isVirtual()) {
VirtualThreads.parkUntil(deadline);
long millis = deadline - System.currentTimeMillis();
JLA.parkVirtualThread(TimeUnit.MILLISECONDS.toNanos(millis));
} else {
U.park(true, deadline);
}
@ -462,4 +461,5 @@ public class LockSupport {
private static final long PARKBLOCKER
= U.objectFieldOffset(Thread.class, "parkBlocker");
private static final JavaLangAccess JLA = SharedSecrets.getJavaLangAccess();
}