test/hotspot/jtreg/vmTestbase/nsk/jvmti/scenarios/hotswap/HS204/hs204t002/hs204t002.cpp
8229036: Remove the testing against NSK_TRUE from tests
Summary: Remove the testing against NSK_TRUE from tests
Reviewed-by: sspitsyn, cjplummer
/*
* Copyright (c) 2007, 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 <jvmti.h>
#include "agent_common.h"
#include <jni.h>
#include <string.h>
#include "jvmti_tools.h"
#include "JVMTITools.h"
/*
*1. Enable event ClassPrepare.
*2. Upon occurrence of ClassPrepare, set a breakpoint in class static
* initializer.
*3. Upon reaching the breakpoint, redefine the class and pop
*a currently executed frame of the static initializer.
*/
extern "C" {
#define FILE_NAME "nsk/jvmti/scenarios/hotswap/HS204/hs204t002/MyThread"
#define SEARCH_NAME "nsk/jvmti/scenarios/hotswap/HS204/hs204t002/MyThread"
#define CLASS_NAME "Lnsk/jvmti/scenarios/hotswap/HS204/hs204t002/MyThread;"
#define METHOD_NAME "<init>"
#define METHOD_SIGNATURE "()V"
static jint redefineNumber;
static jvmtiEnv * jvmti;
JNIEXPORT void JNICALL
callbackClassPrepare(jvmtiEnv *jvmti,
JNIEnv* jni,
jthread thread,
jclass klass) {
char * className;
char * generic;
redefineNumber=0;
jvmti->GetClassSignature(klass, &className, &generic);
/* printf("Agent::Class Name %s \n",className); */
if ((strcmp(className, CLASS_NAME) == 0)) {
jclass cls;
cls = jni->FindClass(SEARCH_NAME);
if (cls == NULL) {
printf("Agent::CLS is null");
} else {
jmethodID method;
method = jni->GetMethodID(cls, METHOD_NAME,METHOD_SIGNATURE);
if (method == NULL) {
printf("Agent::Method is null ");
} else {
jlocation start;
jlocation end;
jvmtiError err ;
err=jvmti->GetMethodLocation(method, &start, &end);
if (err != JVMTI_ERROR_NONE) {
printf("Agent::Errors in finding start and end for the method \n");
} else {
printf("Agent Start = %" LL "d and end = %" LL "d \n", start , end);
printf("Agent::setting break points..");
err= jvmti->SetBreakpoint(method, start+1);
if (err == JVMTI_ERROR_DUPLICATE) {
printf("Agent::JVMTI_ERROR_DUPLICATE");
} else if (err == JVMTI_ERROR_INVALID_METHODID) {
printf("Agent::JVMTI_ERROR_INVALID_METHODID ");
} else if (err == JVMTI_ERROR_INVALID_LOCATION) {
printf("Agent::JVMTI_ERROR_INVALID_LOCATION ");
} else if (err == JVMTI_ERROR_NONE) {
printf("Agent::NO ERRORS ");
} else {
printf("Agent::VERY VERY INVALID STATE ");
}
}
}
}
}
return;
}
void JNICALL callbackBreakpoint(jvmtiEnv *jvmti_env,
JNIEnv* jni,
jthread thread,
jmethodID method,
jlocation loc) {
jclass cls;
char fileName[512];
nsk_jvmti_getFileName(redefineNumber, FILE_NAME, fileName,
sizeof(fileName)/sizeof(char));
cls = jni->FindClass(SEARCH_NAME);
printf("Agent:: Break Pont Reached..");
if (nsk_jvmti_redefineClass(jvmti, cls, fileName)) {
nsk_printf("\nMyClass :: Successfully redefined..\n");
} else {
nsk_printf("\nMyClass :: Failed to redefine ..\n");
}
}
#ifdef STATIC_BUILD
JNIEXPORT jint JNICALL Agent_OnLoad_hs204t002(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNICALL Agent_OnAttach_hs204t002(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNI_OnLoad_hs204t002(JavaVM *jvm, char *options, void *reserved) {
return JNI_VERSION_1_8;
}
#endif
jint Agent_Initialize(JavaVM *vm, char *options, void *reserved) {
jint rc ;
printf("Agent:: VM.. Started..\n");
rc=vm->GetEnv((void **)&jvmti, JVMTI_VERSION_1_1);
if (rc != JNI_OK) {
printf("Agent:: Could not load JVMTI interface \n");
return JNI_ERR;
} else {
jvmtiCapabilities caps;
jvmtiEventCallbacks eventCallbacks;
memset(&caps, 0, sizeof(caps));
if (!nsk_jvmti_parseOptions(options)) {
nsk_printf(" NSK Failed to parse..");
return JNI_ERR;
}
/*
required to set a prepareClassLoad not required call
and setBreakPoint is required.
and redefine is required..
*/
caps.can_redefine_classes = 1;
caps.can_generate_breakpoint_events=1;
caps.can_redefine_classes = 1;
jvmti->AddCapabilities(&caps);
memset(&eventCallbacks, 0, sizeof(eventCallbacks));
eventCallbacks.ClassPrepare = callbackClassPrepare;
eventCallbacks.Breakpoint = callbackBreakpoint;
rc=jvmti->SetEventCallbacks(&eventCallbacks, sizeof(eventCallbacks));
if (rc != JVMTI_ERROR_NONE) {
printf("Agent:: Error occured while setting event call back \n");
return JNI_ERR;
}
nsk_jvmti_enableNotification(jvmti, JVMTI_EVENT_CLASS_PREPARE , NULL);
nsk_jvmti_enableNotification(jvmti, JVMTI_EVENT_BREAKPOINT, NULL);
}
return JNI_OK;
}
}