archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-27 14:54:52 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8284161: Implementation of Virtual Threads (Preview)

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

44
src/java.base/linux/classes/sun/nio/ch/DefaultPollerProvider.java Normal file
View file

@ -0,0 +1,44 @@
/*
* Copyright (c) 2017, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.nio.ch;
import java.io.IOException;
/**
* Default PollerProvider for Linux.
*/
class DefaultPollerProvider extends PollerProvider {
DefaultPollerProvider() { }
@Override
Poller readPoller() throws IOException {
return new EPollPoller(true);
}
@Override
Poller writePoller() throws IOException {
return new EPollPoller(false);
}
}

9
src/java.base/linux/classes/sun/nio/ch/EPoll.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2008, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -50,6 +50,9 @@ class EPoll {
* epoll_data_t data;
* }
*/
static {
IOUtil.load();
}
private static final int SIZEOF_EPOLLEVENT = eventSize();
private static final int OFFSETOF_EVENTS = eventsOffset();
private static final int OFFSETOF_FD = dataOffset();
@ -115,8 +118,4 @@ class EPoll {
static native int wait(int epfd, long pollAddress, int numfds, int timeout)
throws IOException;
static {
IOUtil.load();
}
}

82
src/java.base/linux/classes/sun/nio/ch/EPollPoller.java Normal file
View file

@ -0,0 +1,82 @@
/*
* Copyright (c) 2017, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.nio.ch;
import java.io.IOException;
import static sun.nio.ch.EPoll.*;
/**
* Poller implementation based on the epoll facility.
*/
class EPollPoller extends Poller {
private static final int MAX_EVENTS_TO_POLL = 512;
private static final int ENOENT = 2;
private final int epfd;
private final int event;
private final long address;
EPollPoller(boolean read) throws IOException {
super(read);
this.epfd = EPoll.create();
this.event = (read) ? EPOLLIN : EPOLLOUT;
this.address = EPoll.allocatePollArray(MAX_EVENTS_TO_POLL);
}
@Override
int fdVal() {
return epfd;
}
@Override
void implRegister(int fdVal) throws IOException {
// re-arm
int err = EPoll.ctl(epfd, EPOLL_CTL_MOD, fdVal, (event | EPOLLONESHOT));
if (err == ENOENT)
err = EPoll.ctl(epfd, EPOLL_CTL_ADD, fdVal, (event | EPOLLONESHOT));
if (err != 0)
throw new IOException("epoll_ctl failed: " + err);
}
@Override
void implDeregister(int fdVal) {
EPoll.ctl(epfd, EPOLL_CTL_DEL, fdVal, 0);
}
@Override
int poll(int timeout) throws IOException {
int n = EPoll.wait(epfd, address, MAX_EVENTS_TO_POLL, timeout);
int i = 0;
while (i < n) {
long eventAddress = EPoll.getEvent(address, i);
int fdVal = EPoll.getDescriptor(eventAddress);
polled(fdVal);
i++;
}
return n;
}
}

10
src/java.base/linux/classes/sun/nio/ch/EPollSelectorImpl.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2005, 2021, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2005, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -36,6 +36,7 @@ import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.function.Consumer;
import jdk.internal.misc.Blocker;
import static sun.nio.ch.EPoll.EPOLLIN;
import static sun.nio.ch.EPoll.EPOLL_CTL_ADD;
@ -115,7 +116,12 @@ class EPollSelectorImpl extends SelectorImpl {
do {
long startTime = timedPoll ? System.nanoTime() : 0;
numEntries = EPoll.wait(epfd, pollArrayAddress, NUM_EPOLLEVENTS, to);
long comp = Blocker.begin(blocking);
try {
numEntries = EPoll.wait(epfd, pollArrayAddress, NUM_EPOLLEVENTS, to);
} finally {
Blocker.end(comp);
}
if (numEntries == IOStatus.INTERRUPTED && timedPoll) {
// timed poll interrupted so need to adjust timeout
long adjust = System.nanoTime() - startTime;