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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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22
src/hotspot/share/oops/oop.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 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
@ -35,11 +35,16 @@
#include "oops/verifyOopClosure.hpp"
#include "runtime/handles.inline.hpp"
#include "runtime/thread.inline.hpp"
#include "utilities/copy.hpp"
#include "utilities/macros.hpp"
void oopDesc::print_on(outputStream* st) const {
klass()->oop_print_on(const_cast<oopDesc*>(this), st);
if (*((juint*)this) == badHeapWordVal) {
st->print("BAD WORD");
} else if (*((juint*)this) == badMetaWordVal) {
st->print("BAD META WORD");
} else {
klass()->oop_print_on(cast_to_oop(this), st);
}
}
void oopDesc::print_address_on(outputStream* st) const {
@ -136,6 +141,7 @@ void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p);
// type test operations that doesn't require inclusion of oop.inline.hpp.
bool oopDesc::is_instance_noinline() const { return is_instance(); }
bool oopDesc::is_instanceRef_noinline() const { return is_instanceRef(); }
bool oopDesc::is_stackChunk_noinline() const { return is_stackChunk(); }
bool oopDesc::is_array_noinline() const { return is_array(); }
bool oopDesc::is_objArray_noinline() const { return is_objArray(); }
bool oopDesc::is_typeArray_noinline() const { return is_typeArray(); }
@ -224,6 +230,12 @@ void oopDesc::verify_forwardee(oop forwardee) {
#endif
}
bool oopDesc::get_UseParallelGC() { return UseParallelGC; }
bool oopDesc::get_UseG1GC() { return UseG1GC; }
bool oopDesc::size_might_change() {
// UseParallelGC and UseG1GC can change the length field
// of an "old copy" of an object array in the young gen so it indicates
// the grey portion of an already copied array. This will cause the first
// disjunct below to fail if the two comparands are computed across such
// a concurrent change.
return Universe::heap()->is_gc_active() && is_objArray() && is_forwarded() && (UseParallelGC || UseG1GC);
}
#endif