001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019package lucee.transformer.bytecode.statement.tag; 020 021import lucee.commons.lang.RandomUtil; 022import lucee.runtime.tag.ThreadTag; 023import lucee.transformer.bytecode.Body; 024import lucee.transformer.bytecode.BodyBase; 025import lucee.transformer.bytecode.BytecodeContext; 026import lucee.transformer.bytecode.BytecodeException; 027import lucee.transformer.bytecode.Page; 028import lucee.transformer.bytecode.Position; 029import lucee.transformer.bytecode.literal.LitString; 030import lucee.transformer.bytecode.util.ASMUtil; 031import lucee.transformer.bytecode.util.Types; 032 033import org.objectweb.asm.Type; 034import org.objectweb.asm.commons.GeneratorAdapter; 035import org.objectweb.asm.commons.Method; 036 037public final class TagThread extends TagBaseNoFinal { 038 039 040 041 public static final Type THREAD_TAG = Type.getType(ThreadTag.class); 042 043 044 private static final Method REGISTER = new Method( 045 "register",Types.VOID,new Type[]{Types.PAGE,Types.INT_VALUE}); 046 047 048 public TagThread(Position start,Position end) { 049 super(start,end); 050 } 051 052 053 054 055 056 /** 057 * 058 * @see lucee.transformer.bytecode.statement.tag.TagBase#_writeOut(lucee.transformer.bytecode.BytecodeContext) 059 */ 060 public void _writeOut(BytecodeContext bc) throws BytecodeException { 061 String action=ASMUtil.getAttributeString(this, "action","run"); 062 // no body 063 if(!"run".equalsIgnoreCase(action)) { 064 super._writeOut(bc); 065 return; 066 } 067 068 Attribute name = getAttribute("name"); 069 if(name==null){ 070 addAttribute(new Attribute(false, "name",LitString.toExprString("thread"+RandomUtil.createRandomStringLC(20)), "string")); 071 } 072 073 GeneratorAdapter adapter = bc.getAdapter(); 074 Page page = ASMUtil.getAncestorPage(this); 075 076 int index=page.addThread(this); 077 super._writeOut(bc,false); 078 079 adapter.loadLocal(bc.getCurrentTag()); 080 adapter.loadThis(); 081 adapter.push(index); 082 adapter.invokeVirtual(THREAD_TAG, REGISTER); 083 084 } 085 086 087 088 089 090 /** 091 * @see lucee.transformer.bytecode.statement.tag.TagBase#getBody() 092 */ 093 public Body getBody() { 094 return new BodyBase(); 095 } 096 097 public Body getRealBody() { 098 return super.getBody(); 099 } 100 101}