test/hotspot/jtreg/vmTestbase/nsk/jvmti/RedefineClasses/redefclass018/redefclass018.cpp
8209611: use C++ compiler for hotspot tests
Reviewed-by: vlivanov, ihse, erikj, jcbeyler
/*
* Copyright (c) 2003, 2018, 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.
*
* 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.
*/
#include <stdio.h>
#include <string.h>
#include "jvmti.h"
#include "agent_common.h"
#include "JVMTITools.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifndef JNI_ENV_ARG
#ifdef __cplusplus
#define JNI_ENV_ARG(x, y) y
#define JNI_ENV_PTR(x) x
#else
#define JNI_ENV_ARG(x,y) x, y
#define JNI_ENV_PTR(x) (*x)
#endif
#endif
#define PASSED 0
#define STATUS_FAILED 2
static jvmtiEnv *jvmti = NULL;
static jvmtiCapabilities caps;
static jvmtiEventCallbacks callbacks;
static jint result = PASSED;
static jboolean printdump = JNI_FALSE;
static jbyteArray classBytes;
void JNICALL
Exception(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread,
jmethodID method, jlocation location, jobject exception,
jmethodID c_method, jlocation c_location) {
jvmtiError err;
jclass klass;
jvmtiClassDefinition classDef;
err = jvmti->SetEventNotificationMode(JVMTI_DISABLE,
JVMTI_EVENT_EXCEPTION, NULL);
if (err != JVMTI_ERROR_NONE) {
printf("Failed to disable JVMTI_EVENT_EXCEPTION: %s (%d)\n",
TranslateError(err), err);
result = STATUS_FAILED;
}
err = jvmti_env->GetMethodDeclaringClass(method, &klass);
if (err != JVMTI_ERROR_NONE) {
printf("(GetMethodDeclaringClass) unexpected error: %s (%d)\n",
TranslateError(err), err);
result = STATUS_FAILED;
return;
}
classDef.klass = klass;
classDef.class_byte_count =
JNI_ENV_PTR(env)->GetArrayLength(JNI_ENV_ARG((JNIEnv *)env, classBytes));
classDef.class_bytes = (unsigned char *)
JNI_ENV_PTR(env)->GetByteArrayElements(JNI_ENV_ARG((JNIEnv *)env,
classBytes), NULL);
if (printdump == JNI_TRUE) {
printf(">>> about to call RedefineClasses\n");
}
err = jvmti->RedefineClasses(1, &classDef);
if (err != JVMTI_ERROR_NONE) {
printf("(RedefineClasses) unexpected error: %s (%d)\n",
TranslateError(err), err);
result = STATUS_FAILED;
}
}
#ifdef STATIC_BUILD
JNIEXPORT jint JNICALL Agent_OnLoad_redefclass018(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNICALL Agent_OnAttach_redefclass018(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNI_OnLoad_redefclass018(JavaVM *jvm, char *options, void *reserved) {
return JNI_VERSION_1_8;
}
#endif
jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
jvmtiError err;
jint res;
if (options != NULL && strcmp(options, "printdump") == 0) {
printdump = JNI_TRUE;
}
res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti),
JVMTI_VERSION_1_1);
if (res != JNI_OK || jvmti == NULL) {
printf("Wrong result of a valid call to GetEnv!\n");
return JNI_ERR;
}
err = jvmti->GetPotentialCapabilities(&caps);
if (err != JVMTI_ERROR_NONE) {
printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n",
TranslateError(err), err);
return JNI_ERR;
}
err = jvmti->AddCapabilities(&caps);
if (err != JVMTI_ERROR_NONE) {
printf("(AddCapabilities) unexpected error: %s (%d)\n",
TranslateError(err), err);
return JNI_ERR;
}
err = jvmti->GetCapabilities(&caps);
if (err != JVMTI_ERROR_NONE) {
printf("(GetCapabilities) unexpected error: %s (%d)\n",
TranslateError(err), err);
return JNI_ERR;
}
if (!caps.can_redefine_classes) {
printf("Warning: RedefineClasses is not implemented\n");
}
if (caps.can_generate_exception_events) {
callbacks.Exception = &Exception;
err = jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks));
if (err != JVMTI_ERROR_NONE) {
printf("(SetEventCallbacks) unexpected error: %s (%d)\n",
TranslateError(err), err);
return JNI_ERR;
}
} else {
printf("Warning: Breakpoint event is not implemented\n");
}
return JNI_OK;
}
JNIEXPORT void JNICALL
Java_nsk_jvmti_RedefineClasses_redefclass018_getReady(JNIEnv *env, jclass cls,
jclass clazz, jbyteArray bytes) {
jvmtiError err;
jthread thread;
if (jvmti == NULL) {
printf("JVMTI client was not properly loaded!\n");
result = STATUS_FAILED;
return;
}
if (!caps.can_redefine_classes ||
!caps.can_generate_exception_events) return;
classBytes = (jbyteArray) JNI_ENV_PTR(env)->NewGlobalRef(JNI_ENV_ARG(env, bytes));
if ((err = (jvmti->GetCurrentThread(&thread))) != JVMTI_ERROR_NONE) {
printf("Failed to get current thread: %s (%d)\n", TranslateError(err), err);
result = STATUS_FAILED;
return;
}
err = jvmti->SetEventNotificationMode(JVMTI_ENABLE,
JVMTI_EVENT_EXCEPTION, thread);
if (err != JVMTI_ERROR_NONE) {
printf("Failed to enable JVMTI_EVENT_EXCEPTION_CATCH: %s (%d)\n",
TranslateError(err), err);
result = STATUS_FAILED;
}
}
JNIEXPORT jint JNICALL
Java_nsk_jvmti_RedefineClasses_redefclass018_check(JNIEnv *env, jclass cls) {
return result;
}
#ifdef __cplusplus
}
#endif