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/*
* Copyright (c) 2003, 2008, 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* Copyright 2003 Wily Technology, Inc.
*/
#include <stdlib.h>
#include <stdio.h>
#include "JPLISAssert.h"
#include "Utilities.h"
#include "JavaExceptions.h"
/*
* This module provides various simple JNI and JVMTI utility functionality.
*/
void *
allocate(jvmtiEnv * jvmtienv, size_t bytecount) {
void * resultBuffer = NULL;
jvmtiError error = JVMTI_ERROR_NONE;
error = (*jvmtienv)->Allocate(jvmtienv,
bytecount,
(unsigned char**) &resultBuffer);
/* may be called from any phase */
jplis_assert(error == JVMTI_ERROR_NONE);
if ( error != JVMTI_ERROR_NONE ) {
resultBuffer = NULL;
}
return resultBuffer;
}
/**
* Convenience method that deallocates memory.
* Throws assert on error.
* JVMTI Deallocate can only fail due to internal error, that is, this
* agent has done something wrong or JVMTI has done something wrong. These
* errors aren't interesting to a JPLIS agent and so are not returned.
*/
void
deallocate(jvmtiEnv * jvmtienv, void * buffer) {
jvmtiError error = JVMTI_ERROR_NONE;
error = (*jvmtienv)->Deallocate(jvmtienv,
(unsigned char*)buffer);
/* may be called from any phase */
jplis_assert_msg(error == JVMTI_ERROR_NONE, "Can't deallocate memory");
return;
}
/**
* Returns whether the passed exception is an instance of the given classname
* Clears any JNI exceptions before returning
*/
jboolean
isInstanceofClassName( JNIEnv * jnienv,
jobject instance,
const char * className) {
jboolean isInstanceof = JNI_FALSE;
jboolean errorOutstanding = JNI_FALSE;
jclass classHandle = NULL;
jplis_assert(isSafeForJNICalls(jnienv));
/* get an instance of unchecked exception for instanceof comparison */
classHandle = (*jnienv)->FindClass(jnienv, className);
errorOutstanding = checkForAndClearThrowable(jnienv);
jplis_assert(!errorOutstanding);
if (!errorOutstanding) {
isInstanceof = (*jnienv)->IsInstanceOf(jnienv, instance, classHandle);
errorOutstanding = checkForAndClearThrowable(jnienv);
jplis_assert(!errorOutstanding);
}
jplis_assert(isSafeForJNICalls(jnienv));
return isInstanceof;
}
/* We don't come back from this
*/
void
abortJVM( JNIEnv * jnienv,
const char * message) {
(*jnienv)->FatalError(jnienv, message);
}
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