157 lines
4.4 KiB
C++
157 lines
4.4 KiB
C++
/*
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* Copyright (c) 2003, 2024, 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 "jvmti_common.hpp"
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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 = nullptr;
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static jvmtiCapabilities caps;
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static jint result = PASSED;
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static jboolean printdump = JNI_FALSE;
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JNIEXPORT jint JNICALL
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Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
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jvmtiError err;
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jint res;
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if (options != nullptr && strcmp(options, "printdump") == 0) {
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printdump = JNI_TRUE;
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}
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res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);
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if (res != JNI_OK || jvmti == nullptr) {
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LOG("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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LOG("(GetPotentialCapabilities) unexpected error: %s (%d)\n", 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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LOG("(AddCapabilities) unexpected error: %s (%d)\n", 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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LOG("(GetCapabilities) unexpected error: %s (%d)\n", TranslateError(err), err);
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return JNI_ERR;
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}
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if (!caps.can_suspend) {
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LOG("Warning: suspend/resume is not implemented\n");
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}
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return JNI_OK;
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}
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JNIEXPORT jint JNICALL
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Java_frameloc03_check(JNIEnv *env, jclass cls, jthread thr) {
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jvmtiError err;
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jmethodID mid;
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jlocation loc;
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if (jvmti == nullptr) {
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LOG("JVMTI client was not properly loaded!\n");
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return STATUS_FAILED;
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}
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if (printdump == JNI_TRUE) {
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LOG(">>> invalid thread check ...\n");
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}
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err = jvmti->GetFrameLocation(cls, 0, &mid, &loc);
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if (err != JVMTI_ERROR_INVALID_THREAD) {
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LOG("Error expected: JVMTI_ERROR_INVALID_THREAD,\n");
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LOG(" actual: %s (%d)\n", TranslateError(err), err);
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result = STATUS_FAILED;
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}
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if (!caps.can_suspend) {
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return result;
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}
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err = jvmti->SuspendThread(thr);
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if (err != JVMTI_ERROR_NONE) {
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LOG("(SuspendThread) 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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if (printdump == JNI_TRUE) {
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LOG(">>> invalid depth check ...\n");
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}
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err = jvmti->GetFrameLocation(thr, -1, &mid, &loc);
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if (err != JVMTI_ERROR_ILLEGAL_ARGUMENT) {
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LOG("Error expected: JVMTI_ERROR_ILLEGAL_ARGUMENT,\n");
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LOG(" actual: %s (%d)\n", TranslateError(err), err);
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result = STATUS_FAILED;
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}
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if (printdump == JNI_TRUE) {
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LOG(">>> (methodPtr) null pointer check ...\n");
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}
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err = jvmti->GetFrameLocation(thr, 0, nullptr, &loc);
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if (err != JVMTI_ERROR_NULL_POINTER) {
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LOG("Error expected: JVMTI_ERROR_NULL_POINTER,\n");
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LOG(" actual: %s (%d)\n", TranslateError(err), err);
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result = STATUS_FAILED;
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}
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if (printdump == JNI_TRUE) {
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LOG(">>> (locationPtr) null pointer check ...\n");
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}
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err = jvmti->GetFrameLocation(thr, 0, &mid, nullptr);
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if (err != JVMTI_ERROR_NULL_POINTER) {
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LOG("Error expected: JVMTI_ERROR_NULL_POINTER,\n");
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LOG(" actual: %s (%d)\n", TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = jvmti->ResumeThread(thr);
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if (err != JVMTI_ERROR_NONE) {
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LOG("(ResumeThread) unexpected error: %s (%d)\n", TranslateError(err), err);
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result = STATUS_FAILED;
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}
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if (printdump == JNI_TRUE) {
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LOG(">>> ... done\n");
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}
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return result;
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}
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}
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