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/*
* Copyright (c) 2025, 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.
*
* 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.
*/
/*
* @test
* @requires vm.continuations
* @bug 8347997
* @library /test/lib /
* @summary Test that Continuation.pin() and unpin() intrinsics work with EA.
* @modules java.base/jdk.internal.vm
* @run driver compiler.c2.irTests.TestContinuationPinningAndEA
*/
package compiler.c2.irTests;
import compiler.lib.ir_framework.*;
import jdk.internal.vm.Continuation;
public class TestContinuationPinningAndEA {
public static void main(String[] args) {
TestFramework.runWithFlags("--add-modules", "java.base", "--add-exports", "java.base/jdk.internal.vm=ALL-UNNAMED");
}
@Run(test = {
"test_AllocPinUnpin", "test_PinUnpinAlloc",
"test_AllocPinUnpinNoInline", "test_PinUnpinAllocNoInline",
})
public void runMethod() {
test_AllocPinUnpin();
test_PinUnpinAlloc();
test_AllocPinUnpinNoInline();
test_PinUnpinAllocNoInline();
}
// ===Cases where allocations are removed===
static class AllocPinUnpin {
final Object o;
@ForceInline
public AllocPinUnpin() {
o = new Object();
Continuation.pin();
Continuation.unpin();
}
}
static class PinUnpinAlloc {
final Object o;
@ForceInline
public PinUnpinAlloc() {
Continuation.pin();
Continuation.unpin();
o = new Object();
}
}
@Test
@IR(failOn = {IRNode.ALLOC})
void test_AllocPinUnpin() {
new AllocPinUnpin();
}
@Test
@IR(failOn = {IRNode.ALLOC})
void test_PinUnpinAlloc() {
new PinUnpinAlloc();
}
// ===Sanity check that allocations would happen===
static class AllocPinUnpinNoInline {
final Object o;
@DontInline
public AllocPinUnpinNoInline() {
o = new Object();
Continuation.pin();
Continuation.unpin();
}
}
static class PinUnpinAllocNoInline {
final Object o;
@DontInline
public PinUnpinAllocNoInline() {
Continuation.pin();
Continuation.unpin();
o = new Object();
}
}
@Test
@IR(counts = {IRNode.ALLOC, ">0"})
void test_AllocPinUnpinNoInline() {
new AllocPinUnpinNoInline();
}
@Test
@IR(counts = {IRNode.ALLOC, ">0"})
void test_PinUnpinAllocNoInline() {
new PinUnpinAllocNoInline();
}
}
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