/*
* Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* 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).
*
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package com.oracle.svm.core.allocationprofile;
// Checkstyle: allow reflection
import java.lang.reflect.Field;
import org.graalvm.nativeimage.Platform;
import org.graalvm.nativeimage.Platforms;
import com.oracle.svm.core.annotate.NeverInline;
import com.oracle.svm.core.annotate.UnknownObjectField;
import com.oracle.svm.core.util.VMError;
Passed as an argument to the allocation snippet during lowering.
/**
* Passed as an argument to the allocation snippet during lowering.
*/
public class AllocationCounter {
Name of the method that increments this counter. /** Name of the method that increments this counter. */
private final String name;
Next allocation counter - this value is only written during compilation. /** Next allocation counter - this value is only written during compilation. */
@UnknownObjectField(types = AllocationCounter.class) private AllocationCounter next;
Number of allocations. /** Number of allocations. */
private long count;
Size of allocations in bytes. /** Size of allocations in bytes. */
private long size;
@Platforms(Platform.HOSTED_ONLY.class)//
public static final Field COUNT_FIELD;
@Platforms(Platform.HOSTED_ONLY.class)//
public static final Field SIZE_FIELD;
static {
try {
COUNT_FIELD = AllocationCounter.class.getDeclaredField("count");
SIZE_FIELD = AllocationCounter.class.getDeclaredField("size");
} catch (NoSuchFieldException ex) {
throw VMError.shouldNotReachHere(ex);
}
}
protected AllocationCounter(String name, AllocationCounter next) {
this.name = name;
this.next = next;
}
public final void incrementCount() {
this.count++;
}
public final void incrementSize(long inc) {
this.size += inc;
}
public String getName() {
return name;
}
public AllocationCounter getNext() {
return next;
}
@NeverInline("field is written in allocation snippet, so must not be accessed in method that performs allocation")
public long getCount() {
return count;
}
@NeverInline("field is written in allocation snippet, so must not be accessed in method that performs allocation")
public long getSize() {
return size;
}
}