303 lines
10 KiB
C++
303 lines
10 KiB
C++
/*
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* Copyright (c) 2003, 2019, 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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#include <stdio.h>
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#include <string.h>
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#include <jvmti.h>
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#include "agent_common.h"
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#include "nsk_tools.h"
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#include "JVMTITools.h"
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#include "jvmti_tools.h"
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#include "jni_tools.h"
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extern "C" {
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#define STATUS_FAILED 2
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#define PASSED 0
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#define METH_NUM 2
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static const char *METHODS[] = {
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"bpMethod",
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"runThis"
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};
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static const char *METHOD_SIGS[] = {
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"()V",
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"([Ljava/lang/String;Ljava/io/PrintStream;)I"
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};
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static volatile long stepEv[] = { 0, 0 };
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static const char *CLASS_SIG =
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"Lnsk/jvmti/SingleStep/singlestep001;";
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static volatile jint result = PASSED;
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static jvmtiEnv *jvmti = NULL;
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static jvmtiEventCallbacks callbacks;
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static volatile int callbacksEnabled = NSK_FALSE;
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static jrawMonitorID agent_lock;
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static void setBP(jvmtiEnv *jvmti_env, JNIEnv *env, jclass klass) {
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jmethodID mid;
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if (!NSK_JNI_VERIFY(env, (mid = env->GetMethodID(klass, METHODS[0], METHOD_SIGS[0])) != NULL))
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env->FatalError("failed to get ID for the java method\n");
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if (!NSK_JVMTI_VERIFY(jvmti_env->SetBreakpoint(mid, 0)))
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env->FatalError("failed to set breakpoint\n");
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}
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/** callback functions **/
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void JNICALL
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ClassLoad(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread, jclass klass) {
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char *sig, *generic;
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jvmti->RawMonitorEnter(agent_lock);
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if (callbacksEnabled) {
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if (!NSK_JVMTI_VERIFY(jvmti_env->GetClassSignature(klass, &sig, &generic)))
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env->FatalError("failed to obtain a class signature\n");
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if (sig != NULL && (strcmp(sig, CLASS_SIG) == 0)) {
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NSK_DISPLAY1(
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"ClassLoad event received for the class \"%s\"\n"
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"\tsetting breakpoint ...\n",
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sig);
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setBP(jvmti_env, env, klass);
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}
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}
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jvmti->RawMonitorExit(agent_lock);
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}
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void JNICALL
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Breakpoint(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr, jmethodID method,
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jlocation loc) {
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jclass klass;
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char *sig, *generic;
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jvmti->RawMonitorEnter(agent_lock);
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if (!callbacksEnabled) {
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jvmti->RawMonitorExit(agent_lock);
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return;
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}
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NSK_DISPLAY0("Breakpoint event received\n");
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if (!NSK_JVMTI_VERIFY(jvmti_env->GetMethodDeclaringClass(method, &klass)))
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NSK_COMPLAIN0("TEST FAILURE: unable to get method declaring class\n\n");
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if (!NSK_JVMTI_VERIFY(jvmti_env->GetClassSignature(klass, &sig, &generic)))
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env->FatalError("Breakpoint: failed to obtain a class signature\n");
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if (sig != NULL && (strcmp(sig, CLASS_SIG) == 0)) {
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NSK_DISPLAY1("method declaring class \"%s\"\n\tenabling SingleStep events ...\n",
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sig);
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if (!NSK_JVMTI_VERIFY(jvmti_env->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_SINGLE_STEP, thr))) {
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result = STATUS_FAILED;
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NSK_COMPLAIN0("TEST FAILURE: cannot enable SingleStep events\n\n");
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}
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} else {
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result = STATUS_FAILED;
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NSK_COMPLAIN1("TEST FAILURE: unexpected breakpoint event in method of class \"%s\"\n\n",
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sig);
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}
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jvmti->RawMonitorExit(agent_lock);
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}
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void JNICALL
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SingleStep(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread,
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jmethodID method, jlocation location) {
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jclass klass;
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char *sig, *generic, *methNam, *methSig;
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if (result == STATUS_FAILED) {
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return;
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}
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NSK_DISPLAY0(">>>> SingleStep event received\n");
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if (!NSK_JVMTI_VERIFY(jvmti_env->GetMethodName(method, &methNam, &methSig, NULL))) {
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result = STATUS_FAILED;
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NSK_COMPLAIN0("TEST FAILED: unable to get method name during SingleStep callback\n\n");
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return;
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}
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if (!NSK_JVMTI_VERIFY(jvmti_env->GetMethodDeclaringClass(method, &klass))) {
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result = STATUS_FAILED;
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NSK_COMPLAIN0("TEST FAILED: unable to get method declaring class during SingleStep callback\n\n");
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return;
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}
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if (!NSK_JVMTI_VERIFY(jvmti_env->GetClassSignature(klass, &sig, &generic))) {
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result = STATUS_FAILED;
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NSK_COMPLAIN0("TEST FAILED: unable to obtain a class signature during SingleStep callback\n\n");
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return;
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}
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if (sig != NULL) {
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NSK_DISPLAY3(
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"\tmethod name: \"%s\"\n"
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"\tsignature: \"%s\"\n"
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"\tmethod declaring class: \"%s\"\n",
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methNam, methSig, sig);
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if (stepEv[1] == 1) {
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result = STATUS_FAILED;
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NSK_COMPLAIN0("TEST FAILED: SingleStep event received after disabling the event generation\n\n");
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}
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else if ((strcmp(methNam,METHODS[0]) == 0) &&
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(strcmp(methSig,METHOD_SIGS[0]) == 0) &&
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(strcmp(sig,CLASS_SIG) == 0)) {
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stepEv[0]++;
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NSK_DISPLAY1("CHECK PASSED: SingleStep event received for the method \"%s\" as expected\n",
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methNam);
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}
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else if ((strcmp(methNam,METHODS[1]) == 0) &&
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(strcmp(methSig,METHOD_SIGS[1]) == 0) &&
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(strcmp(sig,CLASS_SIG) == 0)) {
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stepEv[1]++;
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NSK_DISPLAY1(
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"CHECK PASSED: SingleStep event received for the method \"%s\" as expected\n"
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"\tdisabling the event generation\n",
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methNam);
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if (!NSK_JVMTI_VERIFY(jvmti_env->SetEventNotificationMode(JVMTI_DISABLE, JVMTI_EVENT_SINGLE_STEP, thread))) {
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result = STATUS_FAILED;
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NSK_COMPLAIN0("TEST FAILED: cannot disable SingleStep events\n\n");
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}
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}
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}
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if (!NSK_JVMTI_VERIFY(jvmti_env->Deallocate((unsigned char*) methNam))) {
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result = STATUS_FAILED;
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NSK_COMPLAIN0("TEST FAILED: unable to deallocate memory pointed to method name\n\n");
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}
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if (!NSK_JVMTI_VERIFY(jvmti_env->Deallocate((unsigned char*) methSig))) {
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result = STATUS_FAILED;
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NSK_COMPLAIN0("TEST FAILED: unable to deallocate memory pointed to method signature\n\n");
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}
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NSK_DISPLAY0("<<<<\n\n");
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}
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void JNICALL
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VMStart(jvmtiEnv *jvmti_env, JNIEnv* jni_env) {
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jvmti->RawMonitorEnter(agent_lock);
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callbacksEnabled = NSK_TRUE;
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jvmti->RawMonitorExit(agent_lock);
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}
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void JNICALL
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VMDeath(jvmtiEnv *jvmti_env, JNIEnv* jni_env) {
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jvmti->RawMonitorEnter(agent_lock);
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callbacksEnabled = NSK_FALSE;
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jvmti->RawMonitorExit(agent_lock);
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}
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/************************/
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JNIEXPORT jint JNICALL
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Java_nsk_jvmti_SingleStep_singlestep001_check(
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JNIEnv *env, jobject obj) {
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int i;
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for (i=0; i<METH_NUM; i++)
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if (stepEv[i] == 0) {
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result = STATUS_FAILED;
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NSK_COMPLAIN1("TEST FAILED: no SingleStep events for the method \"%s\"\n\n",
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METHODS[i]);
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}
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return result;
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}
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#ifdef STATIC_BUILD
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JNIEXPORT jint JNICALL Agent_OnLoad_singlestep001(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNICALL Agent_OnAttach_singlestep001(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNI_OnLoad_singlestep001(JavaVM *jvm, char *options, void *reserved) {
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return JNI_VERSION_1_8;
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}
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#endif
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jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
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jvmtiCapabilities caps;
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/* init framework and parse options */
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if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
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return JNI_ERR;
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/* create JVMTI environment */
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if (!NSK_VERIFY((jvmti =
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nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
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return JNI_ERR;
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/* add capability to generate compiled method events */
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memset(&caps, 0, sizeof(jvmtiCapabilities));
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caps.can_generate_breakpoint_events = 1;
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caps.can_generate_single_step_events = 1;
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if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps)))
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return JNI_ERR;
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if (!NSK_JVMTI_VERIFY(jvmti->GetCapabilities(&caps)))
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return JNI_ERR;
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if (!caps.can_generate_single_step_events)
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NSK_DISPLAY0("Warning: generation of single step events is not implemented\n");
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/* set event callback */
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NSK_DISPLAY0("setting event callbacks ...\n");
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(void) memset(&callbacks, 0, sizeof(callbacks));
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callbacks.ClassLoad = &ClassLoad;
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callbacks.Breakpoint = &Breakpoint;
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callbacks.SingleStep = &SingleStep;
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callbacks.VMStart = &VMStart;
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callbacks.VMDeath = &VMDeath;
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if (!NSK_JVMTI_VERIFY(jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks))))
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return JNI_ERR;
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NSK_DISPLAY0("setting event callbacks done\nenabling JVMTI events ...\n");
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if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_VM_START, NULL)))
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return JNI_ERR;
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if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_VM_DEATH, NULL)))
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return JNI_ERR;
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if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_CLASS_LOAD, NULL)))
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return JNI_ERR;
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if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_BREAKPOINT, NULL)))
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return JNI_ERR;
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NSK_DISPLAY0("enabling the events done\n\n");
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if (!NSK_JVMTI_VERIFY(jvmti->CreateRawMonitor("agent lock", &agent_lock)))
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return JNI_ERR;
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return JNI_OK;
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}
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}
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