96 lines
4.4 KiB
Java
96 lines
4.4 KiB
Java
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/*
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* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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*
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* @summary converted from VM Testbase nsk/jvmti/ClassFileLoadHook/classfloadhk008.
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* VM Testbase keywords: [quick, jpda, jvmti, noras, redefine]
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* VM Testbase readme:
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* DESCRIPTION
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* This JVMTI test exercises JVMTI event ClassFileLoadHook().
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* This test checks if CLASS_FILE_LOAD_HOOK event is received
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* for class being redefined and the new instrumented bytecode
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* returned from this event callback will be used for tested
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* class after redefinition.
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* The tested class is loaded with default classloader.
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* This test uses three different bytecodes of the tested class
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* 'classfloadhk008r' compiled from the different sources.
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* This directory contains original source of the tested class,
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* which is used to load class with default loader in debuggee class.
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* The subdirectory 'newclass' contains redefined class
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* with changed implementation of methods.
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* The subdirectory 'newclass01' contains new instrumented class
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* with one more changed implementation of methods.
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* The test performs the following checks:
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* - CLASS_FILE_LOAD_HOOK event callback is invoked and only once
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* for the tested class upon its redefinition
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* - pointers to new redefined bytecode and size passed to
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* the event callback are not NULL
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* - the new instrumented bytecode is successfully returned
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* from the event callback
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* - the new instrumented bytecode of the tested class is actually
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* used after class redefinition
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* The debuggee class preliminary loads redefined and instrumented
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* bytecodes of the tested class into static fields and agent gets
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* these bytecodes to use them in CLASS_FILE_LOAD_HOOK event callback.
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* The debuggee loads tested class using default classloader.
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* The agent enables CLASS_FILE_LOAD_HOOK event and redefines
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* tested class with the redefined bytecode.
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* Upon receiving CLASS_FILE_LOAD_HOOK event the agent performs checks
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* and replaces redefined bytecode with the new instrumented bytecode.
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* If no CLASS_FILE_LOAD_HOOK events were received, the agent
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* complains an error.
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* After tested class has been redefined debuggee uses reflection
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* API to call static method of this class. If method returns value
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* according to the new instrumented implementation, then the new
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* bytecode was actually used for creation of tested class. Otherwise,
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* if method returns value according to the original or redefined
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* implementation, or any unexpected value, then the test complains
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* an error.
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* The agent does not deallocate memory used for instrumented
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* bytecode, because this is VM responsibility.
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* If all checks are successfull, the test passes with exit code 95,
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* otherwise the test fails with exit code 97.
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* COMMENTS
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* Modified due to fix of the rfe
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* 5010823 TEST_RFE: some JVMTI tests use the replaced capability
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*
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* @library /vmTestbase
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* /test/lib
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* @run driver jdk.test.lib.FileInstaller . .
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* @build nsk.jvmti.ClassFileLoadHook.classfloadhk008
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* nsk.jvmti.ClassFileLoadHook.classfloadhk008r
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*
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* @comment compile newclassXX to bin/newclassXX
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* @run driver nsk.share.ExtraClassesBuilder
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* newclass newclass01
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*
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* @run main/othervm/native
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* -agentlib:classfloadhk008=-waittime=5
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* nsk.jvmti.ClassFileLoadHook.classfloadhk008
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* ./bin
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*/
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