/*
* Copyright (c) 2017, 2017, 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.
*
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package com.oracle.svm.core.log;
import org.graalvm.nativeimage.c.type.CCharPointer;
import org.graalvm.word.UnsignedWord;
import com.oracle.svm.core.annotate.RestrictHeapAccess;
import com.oracle.svm.core.annotate.Uninterruptible;
public class StringBuilderLog extends RealLog {
private final StringBuilder stringBuilder = new StringBuilder();
public StringBuilderLog() {
}
@RestrictHeapAccess(access = RestrictHeapAccess.Access.UNRESTRICTED, overridesCallers = true, reason = "This implementation allocates.")
@Uninterruptible(reason = "Called from uninterruptible code.", calleeMustBe = false)
@Override
protected Log rawBytes(CCharPointer bytes, UnsignedWord length) {
for (int i = 0; length.aboveThan(i); i++) {
char currentChar = (char) bytes.read(i);
stringBuilder.append(currentChar);
}
return this;
}
@Override
public Log flush() {
// noop
return this;
}
public String getResult() {
return stringBuilder.toString();
}
}