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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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11
src/java.base/share/classes/java/nio/MappedMemoryUtils.java
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@ -25,11 +25,11 @@
package java.nio;
import jdk.internal.misc.Unsafe;
import java.io.FileDescriptor;
import java.io.IOException;
import java.io.UncheckedIOException;
import jdk.internal.misc.Blocker;
import jdk.internal.misc.Unsafe;
/* package */ class MappedMemoryUtils {
@ -96,10 +96,15 @@ import java.io.UncheckedIOException;
} else {
// force writeback via file descriptor
long offset = mappingOffset(address, index);
long mappingAddress = mappingAddress(address, offset, index);
long mappingLength = mappingLength(offset, length);
long comp = Blocker.begin();
try {
force0(fd, mappingAddress(address, offset, index), mappingLength(offset, length));
force0(fd, mappingAddress, mappingLength);
} catch (IOException cause) {
throw new UncheckedIOException(cause);
} finally {
Blocker.end(comp);
}
}
}