251 lines
7.5 KiB
C++
251 lines
7.5 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.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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typedef struct {
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char *name;
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char *c_cls;
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char *c_name;
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char *c_sig;
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jlocation c_loc;
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} writable_exceptionInfo;
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typedef struct {
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const char *name;
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const char *c_cls;
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const char *c_name;
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const char *c_sig;
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jlocation c_loc;
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} exceptionInfo;
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static jvmtiEnv *jvmti = nullptr;
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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 exceptionInfo exs[] = {
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{ "Lexcatch01c;",
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"Lexcatch01a;", "run", "()V", 14 },
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{ "Ljava/lang/ArithmeticException;",
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"Lexcatch01a;", "run", "()V", 24 },
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{ "Ljava/lang/ArrayIndexOutOfBoundsException;",
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"Lexcatch01a;", "run", "()V", 34 }
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};
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static jboolean isVirtualExpected = JNI_FALSE;
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static int eventsCount = 0;
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static int eventsExpected = 0;
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void JNICALL
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ExceptionCatch(jvmtiEnv *jvmti, JNIEnv *jni, jthread thr, jmethodID method, jlocation location, jobject exception) {
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jvmtiError err;
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jclass cls;
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writable_exceptionInfo ex;
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char *generic;
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LOG(">>> retrieving ExceptionCatch info ...\n");
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cls = jni->GetObjectClass(exception);
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err = jvmti->GetClassSignature(cls, &ex.name, &generic);
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if (err != JVMTI_ERROR_NONE) {
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LOG("(GetClassSignature#e) unexpected error: %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->GetMethodDeclaringClass(method, &cls);
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if (err != JVMTI_ERROR_NONE) {
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LOG("(GetMethodDeclaringClass) unexpected error: %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->GetClassSignature(cls, &ex.c_cls, &generic);
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if (err != JVMTI_ERROR_NONE) {
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LOG("(GetClassSignature#c) unexpected error: %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->GetMethodName(method, &ex.c_name, &ex.c_sig, &generic);
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if (err != JVMTI_ERROR_NONE) {
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LOG("(GetMethodName) unexpected error: %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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ex.c_loc = location;
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LOG(">>> %s\n", ex.name);
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LOG(">>> catch at %s.%s%s:0x%x%08x\n", ex.c_cls, ex.c_name, ex.c_sig, (jint)(ex.c_loc >> 32), (jint)ex.c_loc);
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LOG(">>> ... done\n");
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bool found = false;
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for (size_t i = 0; i < sizeof(exs)/sizeof(exceptionInfo); i++) {
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if (ex.name != nullptr && strcmp(ex.name, exs[i].name) == 0
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&& ex.c_cls != nullptr && strcmp(ex.c_cls, exs[i].c_cls) == 0
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&& ex.c_name != nullptr && strcmp(ex.c_name, exs[i].c_name) == 0
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&& ex.c_sig != nullptr && strcmp(ex.c_sig, exs[i].c_sig) == 0
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&& ex.c_loc == exs[i].c_loc) {
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jboolean isVirtual = jni->IsVirtualThread(thr);
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if (isVirtualExpected != isVirtual) {
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LOG("The thread IsVirtualThread %d differs from expected %d.\n", isVirtual, isVirtualExpected);
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result = STATUS_FAILED;
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} else {
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eventsCount++;
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}
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found = true;
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break;
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}
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}
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if (!found) {
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LOG("Unexpected exception catch event:\n");
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LOG(" %s\n", ex.name);
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LOG(" catch at %s.%s%s:0x%x%08x\n", ex.c_cls, ex.c_name, ex.c_sig, (jint)(ex.c_loc >> 32), (jint)ex.c_loc);
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result = STATUS_FAILED;
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}
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}
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jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
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jvmtiCapabilities caps;
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jvmtiError err;
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jint res;
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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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memset(&caps, 0, sizeof(jvmtiCapabilities));
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caps.can_generate_exception_events = 1;
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caps.can_support_virtual_threads = 1;
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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_generate_exception_events) {
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callbacks.ExceptionCatch = &ExceptionCatch;
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err = jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks));
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if (err != JVMTI_ERROR_NONE) {
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LOG("(SetEventCallbacks) unexpected error: %s (%d)\n", TranslateError(err), err);
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return JNI_ERR;
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}
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} else {
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LOG("Warning: Exception 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 jint JNICALL
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Java_excatch01_check(JNIEnv *jni, jclass cls) {
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jvmtiError err;
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jclass clz;
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jmethodID mid;
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jthread thread;
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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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clz = jni->FindClass("excatch01c");
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if (clz == nullptr) {
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LOG("Cannot find excatch01c class!\n");
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return STATUS_FAILED;
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}
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clz = jni->FindClass("excatch01b");
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if (clz == nullptr) {
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LOG("Cannot find excatch01b class!\n");
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return STATUS_FAILED;
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}
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clz = jni->FindClass("excatch01a");
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if (clz == nullptr) {
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LOG("Cannot find excatch01a class!\n");
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return STATUS_FAILED;
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}
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mid = jni->GetStaticMethodID(clz, "run", "()V");
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if (mid == nullptr) {
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LOG("Cannot find method run!\n");
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return STATUS_FAILED;
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}
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err = jvmti->GetCurrentThread(&thread);
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if (err != JVMTI_ERROR_NONE) {
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LOG("Failed to get current thread: %s (%d)\n", TranslateError(err), err);
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result = STATUS_FAILED;
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return STATUS_FAILED;
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}
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err = jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_EXCEPTION_CATCH, nullptr);
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if (err == JVMTI_ERROR_NONE) {
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eventsExpected = sizeof(exs)/sizeof(exceptionInfo);
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} else {
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LOG("Failed to enable JVMTI_EVENT_EXCEPTION_CATCH: %s (%d)\n", TranslateError(err), err);
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result = STATUS_FAILED;
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}
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eventsCount = 0;
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isVirtualExpected = jni->IsVirtualThread(thread);
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jni->CallStaticVoidMethod(clz, mid);
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err = jvmti->SetEventNotificationMode(JVMTI_DISABLE, JVMTI_EVENT_EXCEPTION_CATCH, nullptr);
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if (err != JVMTI_ERROR_NONE) {
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LOG("Failed to disable JVMTI_EVENT_EXCEPTION_CATCH: %s (%d)\n", TranslateError(err), err);
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result = STATUS_FAILED;
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}
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if (eventsCount != eventsExpected) {
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LOG("Wrong number of exception catch events: %d, expected: %d\n", eventsCount, eventsExpected);
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result = STATUS_FAILED;
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}
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return result;
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}
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JNIEXPORT jint JNICALL Agent_OnLoad(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(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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}
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