GetMemoryUsage.java example

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Lucee-master
/**
 *
 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either 
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 * 
 **/
package lucee.runtime.functions.system;

import lucee.commons.io.SystemUtil;
import lucee.commons.lang.StringUtil;
import lucee.runtime.PageContext;
import lucee.runtime.exp.FunctionException;
import lucee.runtime.exp.PageException;
import lucee.runtime.ext.function.Function;
import lucee.runtime.type.Query;

public final class GetMemoryUsage implements Function {
    
	private static final long serialVersionUID = -7937791531186794443L;

	public static Query call(PageContext pc) throws PageException {
        return call(pc, null);
    }
	public static Query call(PageContext pc,String type) throws PageException {
		if(StringUtil.isEmpty(type))
			return SystemUtil.getMemoryUsageAsQuery(SystemUtil.MEMORY_TYPE_ALL);
		
		type=type.trim().toLowerCase();
		if("heap".equalsIgnoreCase(type))
			return SystemUtil.getMemoryUsageAsQuery(SystemUtil.MEMORY_TYPE_HEAP);
		if("non_heap".equalsIgnoreCase(type) || "nonheap".equalsIgnoreCase(type) || "non-heap".equalsIgnoreCase(type) ||
				"none_heap".equalsIgnoreCase(type) || "noneheap".equalsIgnoreCase(type) || "none-heap".equalsIgnoreCase(type))
				return SystemUtil.getMemoryUsageAsQuery(SystemUtil.MEMORY_TYPE_NON_HEAP);
        
		throw new FunctionException(pc, "GetMemoryUsage", 1, "type", "invalid value ["+type+"], valid values are [heap,non_heap]");
    }
}