355 lines
13 KiB
C++
355 lines
13 KiB
C++
/*
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* Copyright (c) 2003, 2020, 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 "JVMTITools.h"
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extern "C" {
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#define PASSED 0
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#define STATUS_FAILED 2
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static jvmtiEnv *jvmti = NULL;
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static jvmtiCapabilities caps;
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static jvmtiEventCallbacks callbacks;
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static jint result = PASSED;
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static jmethodID mid1, mid2, mid3, mid4;
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static jlong longVal = 22L;
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static jfloat floatVal;
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static jdouble doubleVal;
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static jobject objVal;
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static jobject arrVal;
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void JNICALL Breakpoint(jvmtiEnv *jvmti_env, JNIEnv *env,
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jthread thr, jmethodID method, jlocation location) {
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jvmtiError err;
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jmethodID mid;
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jlocation loc;
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jint entryCount;
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jvmtiLocalVariableEntry *table = NULL;
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int i;
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err = jvmti_env->GetFrameLocation(thr, 1, &mid, &loc);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetFrameLocation) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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return;
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}
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err = jvmti_env->GetLocalVariableTable(mid,
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&entryCount, &table);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetLocalVariableTable) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return;
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}
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if (mid == mid1) {
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for (i = 0; i < entryCount; i++) {
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if (strcmp(table[i].name, "l") == 0) {
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err = jvmti_env->SetLocalLong(thr, 1,
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table[i].slot, longVal);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalLong) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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} else if (strcmp(table[i].name, "f") == 0) {
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err = jvmti_env->SetLocalFloat(thr, 1,
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table[i].slot, floatVal);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalFloat) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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} else if (strcmp(table[i].name, "d") == 0) {
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err = jvmti_env->SetLocalDouble(thr, 1,
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table[i].slot, doubleVal);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalDouble) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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}
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} else if (mid == mid2) {
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for (i = 0; i < entryCount; i++) {
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if (strcmp(table[i].name, "i1") == 0) {
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err = jvmti_env->SetLocalInt(thr, 1,
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table[i].slot, 1);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalInt#i1) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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} else if (strcmp(table[i].name, "i2") == 0) {
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err = jvmti_env->SetLocalInt(thr, 1,
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table[i].slot, 1);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalInt#i2) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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} else if (strcmp(table[i].name, "i3") == 0) {
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err = jvmti_env->SetLocalInt(thr, 1,
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table[i].slot, 1);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalInt#i3) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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} else if (strcmp(table[i].name, "i4") == 0) {
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err = jvmti_env->SetLocalInt(thr, 1,
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table[i].slot, 1);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalInt#i4) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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} else if (strcmp(table[i].name, "i5") == 0) {
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err = jvmti_env->SetLocalInt(thr, 1,
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table[i].slot, 1);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalInt#i5) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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}
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} else if (mid == mid3) {
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for (i = 0; i < entryCount; i++) {
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if (strcmp(table[i].name, "ob1") == 0) {
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err = jvmti_env->SetLocalObject(thr, 1,
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table[i].slot, objVal);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalObject#ob1) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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} else if (strcmp(table[i].name, "ob2") == 0) {
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err = jvmti_env->SetLocalObject(thr, 1,
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table[i].slot, arrVal);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalObject#ob2) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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}
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} else if (mid == mid4) {
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for (i = 0; i < entryCount; i++) {
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if (strcmp(table[i].name, "i1") == 0) {
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err = jvmti_env->SetLocalInt(thr, 1,
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table[i].slot, 1);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalInt#i1,param) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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} else if (strcmp(table[i].name, "i2") == 0) {
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err = jvmti_env->SetLocalInt(thr, 1,
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table[i].slot, 2);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalInt#i2,param) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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} else if (strcmp(table[i].name, "i3") == 0) {
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err = jvmti_env->SetLocalInt(thr, 1,
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table[i].slot, 3);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalInt#i3,param) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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} else if (strcmp(table[i].name, "i4") == 0) {
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err = jvmti_env->SetLocalInt(thr, 1,
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table[i].slot, 4);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalInt#i4,param) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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} else if (strcmp(table[i].name, "b") == 0) {
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err = jvmti_env->SetLocalInt(thr, 1,
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table[i].slot, JNI_TRUE);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalInt#b,param) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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} else if (strcmp(table[i].name, "l") == 0) {
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err = jvmti_env->SetLocalLong(thr, 1,
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table[i].slot, longVal);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalLong,param) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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} else if (strcmp(table[i].name, "f") == 0) {
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err = jvmti_env->SetLocalFloat(thr, 1,
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table[i].slot, floatVal);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalFloat,param) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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} else if (strcmp(table[i].name, "d") == 0) {
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err = jvmti_env->SetLocalDouble(thr, 1,
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table[i].slot, doubleVal);
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetLocalDouble,param) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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}
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} else {
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printf("ERROR: didn't know where we got called from");
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result = STATUS_FAILED;
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}
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if (table != NULL) {
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for (i = 0; i < entryCount; i++) {
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jvmti_env->Deallocate((unsigned char*)table[i].name);
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jvmti_env->Deallocate((unsigned char*)table[i].signature);
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}
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jvmti_env->Deallocate((unsigned char*)table);
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}
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}
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#ifdef STATIC_BUILD
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JNIEXPORT jint JNICALL Agent_OnLoad_setlocal001(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_setlocal001(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_setlocal001(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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jint res;
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jvmtiError err;
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res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);
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if (res != JNI_OK || jvmti == NULL) {
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printf("Wrong result of a valid call to GetEnv !\n");
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return JNI_ERR;
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}
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err = jvmti->GetPotentialCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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err = jvmti->AddCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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printf("(AddCapabilities) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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err = jvmti->GetCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetCapabilities) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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if (!caps.can_access_local_variables) {
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printf("Warning: access to local variables is not implemented\n");
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} else if (caps.can_generate_breakpoint_events) {
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callbacks.Breakpoint = &Breakpoint;
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err = jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks));
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetEventCallbacks) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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} else {
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printf("Warning: Breakpoint event is not implemented\n");
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}
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return JNI_OK;
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}
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JNIEXPORT void JNICALL
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Java_nsk_jvmti_SetLocalVariable_setlocal001_getMethReady(JNIEnv *env,
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jclass cls, jfloat f, jdouble d, jobject o, jobject a) {
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jvmtiError err;
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jmethodID mid;
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if (jvmti == NULL) {
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printf("JVMTI client was not properly loaded!\n");
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result = STATUS_FAILED;
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return;
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}
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if (!caps.can_access_local_variables ||
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!caps.can_generate_breakpoint_events) return;
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mid = env->GetStaticMethodID(cls, "checkPoint", "()V");
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mid1 = env->GetMethodID(cls, "meth01", "()D");
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mid2 = env->GetMethodID(cls, "meth02", "(I)V");
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mid3 = env->GetStaticMethodID(cls, "meth03", "()V");
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mid4 = env->GetStaticMethodID(cls, "meth04", "(IJSDCFBZ)V");
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if (mid == 0 || mid1 == 0 || mid2 == 0 || mid3 == 0 || mid4 == 0) {
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printf("Cannot find Method ID for a method\n");
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}
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floatVal = f;
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doubleVal = d;
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objVal = env->NewGlobalRef(o);
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arrVal = env->NewGlobalRef(a);
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err = jvmti->SetBreakpoint(mid, 0);
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if (err != JVMTI_ERROR_NONE) {
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printf("Failed to SetBreakpoint: %s (%d)\n", TranslateError(err), err);
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result = STATUS_FAILED;
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return;
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}
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err = jvmti->SetEventNotificationMode(JVMTI_ENABLE,
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JVMTI_EVENT_BREAKPOINT, NULL);
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if (err != JVMTI_ERROR_NONE) {
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printf("Failed to enable BREAKPOINT event: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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JNIEXPORT jint JNICALL
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Java_nsk_jvmti_SetLocalVariable_setlocal001_getRes(JNIEnv *env, jclass cls) {
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return result;
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}
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}
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