| /* |
| * Copyright (c) 2003, 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 <string.h> |
| #include "jvmti.h" |
| #include "agent_common.h" |
| #include "JVMTITools.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #ifndef JNI_ENV_ARG |
| |
| #ifdef __cplusplus |
| #define JNI_ENV_ARG(x, y) y |
| #define JNI_ENV_PTR(x) x |
| #else |
| #define JNI_ENV_ARG(x,y) x, y |
| #define JNI_ENV_PTR(x) (*x) |
| #endif |
| |
| #endif |
| |
| #define PASSED 0 |
| #define STATUS_FAILED 2 |
| |
| typedef struct { |
| char *name; |
| char *t_cls; |
| char *t_name; |
| char *t_sig; |
| jlocation t_loc; |
| char *c_cls; |
| char *c_name; |
| char *c_sig; |
| jlocation c_loc; |
| } exceptionInfo; |
| |
| static jvmtiEnv *jvmti = NULL; |
| static jvmtiCapabilities caps; |
| static jvmtiEventCallbacks callbacks; |
| static jint result = PASSED; |
| static jboolean printdump = JNI_FALSE; |
| static exceptionInfo exs[] = { |
| {"Lnsk/jvmti/Exception/exception001c;", |
| "Lnsk/jvmti/Exception/exception001b;", "meth1", "()V", 7, |
| "Lnsk/jvmti/Exception/exception001a;", "run", "()V", 14}, |
| {"Ljava/lang/ArithmeticException;", |
| "Lnsk/jvmti/Exception/exception001b;", "meth2", "(I)I", 3, |
| "Lnsk/jvmti/Exception/exception001a;", "run", "()V", 24}, |
| {"Ljava/lang/ArrayIndexOutOfBoundsException;", |
| "Lnsk/jvmti/Exception/exception001b;", "meth3", "(I)I", 10, |
| "Lnsk/jvmti/Exception/exception001a;", "run", "()V", 34} |
| }; |
| static int eventsCount = 0; |
| static int eventsExpected = 0; |
| |
| void JNICALL |
| Exception(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr, |
| jmethodID method, jlocation location, jobject exception, |
| jmethodID catch_method, jlocation catch_location) { |
| jvmtiError err; |
| exceptionInfo ex; |
| jclass cls; |
| char *generic; |
| size_t i; |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> retrieving Exception info ...\n"); |
| } |
| cls = JNI_ENV_PTR(env)->GetObjectClass(JNI_ENV_ARG((JNIEnv *)env, exception)); |
| err = (*jvmti_env)->GetClassSignature(jvmti_env, cls, &ex.name, &generic); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetClassSignature) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| err = (*jvmti_env)->GetMethodDeclaringClass(jvmti_env, method, &cls); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodDeclaringClass#t) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| err = (*jvmti_env)->GetClassSignature(jvmti_env, cls, &ex.t_cls, &generic); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetClassSignature#t) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| err = (*jvmti_env)->GetMethodName(jvmti_env, method, |
| &ex.t_name, &ex.t_sig, &generic); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodName#t) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| ex.t_loc = location; |
| err = (*jvmti_env)->GetMethodDeclaringClass(jvmti_env, catch_method, &cls); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodDeclaringClass#c) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| err = (*jvmti_env)->GetClassSignature(jvmti_env, cls, &ex.c_cls, &generic); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetClassSignature#c) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| err = (*jvmti_env)->GetMethodName(jvmti_env, catch_method, |
| &ex.c_name, &ex.c_sig, &generic); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetMethodName#c) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| ex.c_loc = catch_location; |
| if (printdump == JNI_TRUE) { |
| printf(">>> %s\n", ex.name); |
| printf(">>> thrown at %s.%s%s:0x%x%08x\n", |
| ex.t_cls, ex.t_name, ex.t_sig, |
| (jint)(ex.t_loc >> 32), (jint)ex.t_loc); |
| printf(">>> 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); |
| printf(">>> ... done\n"); |
| } |
| for (i = 0; i < sizeof(exs)/sizeof(exceptionInfo); i++) { |
| if (ex.name != NULL && strcmp(ex.name, exs[i].name) == 0 |
| && ex.t_cls != NULL && strcmp(ex.t_cls, exs[i].t_cls) == 0 |
| && ex.t_name != NULL && strcmp(ex.t_name, exs[i].t_name) == 0 |
| && ex.t_sig != NULL && strcmp(ex.t_sig, exs[i].t_sig) == 0 |
| && ex.c_cls != NULL && strcmp(ex.c_cls, exs[i].c_cls) == 0 |
| && ex.c_name != NULL && strcmp(ex.c_name, exs[i].c_name) == 0 |
| && ex.c_sig != NULL && strcmp(ex.c_sig, exs[i].c_sig) == 0 |
| && ex.t_loc == exs[i].t_loc && ex.c_loc == exs[i].c_loc) { |
| eventsCount++; |
| break; |
| } |
| } |
| if (i == sizeof(exs)/sizeof(exceptionInfo)) { |
| printf("Unexpected exception event:\n"); |
| printf(" %s\n", ex.name); |
| printf(" thrown at %s.%s%s:0x%x%08x\n", |
| ex.t_cls, ex.t_name, ex.t_sig, |
| (jint)(ex.t_loc >> 32), (jint)ex.t_loc); |
| printf(" 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); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_exception001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_exception001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_exception001(JavaVM *jvm, char *options, void *reserved) { |
| return JNI_VERSION_1_8; |
| } |
| #endif |
| jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { |
| jvmtiError err; |
| jint res; |
| |
| if (options != NULL && strcmp(options, "printdump") == 0) { |
| printdump = JNI_TRUE; |
| } |
| |
| res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti), |
| JVMTI_VERSION_1_1); |
| if (res != JNI_OK || jvmti == NULL) { |
| printf("Wrong result of a valid call to GetEnv!\n"); |
| return JNI_ERR; |
| } |
| |
| err = (*jvmti)->GetPotentialCapabilities(jvmti, &caps); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| err = (*jvmti)->AddCapabilities(jvmti, &caps); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(AddCapabilities) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| err = (*jvmti)->GetCapabilities(jvmti, &caps); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetCapabilities) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| if (caps.can_generate_exception_events) { |
| callbacks.Exception = &Exception; |
| err = (*jvmti)->SetEventCallbacks(jvmti, &callbacks, sizeof(callbacks)); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(SetEventCallbacks) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| } else { |
| printf("Warning: Exception event is not implemented\n"); |
| } |
| |
| return JNI_OK; |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_nsk_jvmti_Exception_exception001_check(JNIEnv *env, jclass cls) { |
| jvmtiError err; |
| jthread thread; |
| jclass clz; |
| jmethodID mid; |
| |
| if (jvmti == NULL) { |
| printf("JVMTI client was not properly loaded!\n"); |
| return STATUS_FAILED; |
| } |
| |
| if (!caps.can_generate_exception_events) { |
| return result; |
| } |
| |
| clz = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, |
| "nsk/jvmti/Exception/exception001c")); |
| if (clz == NULL) { |
| printf("Cannot find exception001c class!\n"); |
| return STATUS_FAILED; |
| } |
| clz = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, |
| "nsk/jvmti/Exception/exception001b")); |
| if (clz == NULL) { |
| printf("Cannot find exception001b class!\n"); |
| return STATUS_FAILED; |
| } |
| clz = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, |
| "nsk/jvmti/Exception/exception001a")); |
| if (clz == NULL) { |
| printf("Cannot find exception001a class!\n"); |
| return STATUS_FAILED; |
| } |
| mid = JNI_ENV_PTR(env)->GetStaticMethodID(JNI_ENV_ARG(env, clz), |
| "run", "()V"); |
| if (mid == NULL) { |
| printf("Cannot find method run!\n"); |
| return STATUS_FAILED; |
| } |
| |
| if ((err = ((*jvmti)->GetCurrentThread(jvmti, &thread))) != JVMTI_ERROR_NONE) { |
| printf("Failed to get current thread: %s (%d)\n", TranslateError(err), err); |
| result = STATUS_FAILED; |
| return STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, |
| JVMTI_EVENT_EXCEPTION, thread); |
| if (err == JVMTI_ERROR_NONE) { |
| eventsExpected = sizeof(exs)/sizeof(exceptionInfo); |
| } else { |
| printf("Failed to enable JVMTI_EVENT_EXCEPTION: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| JNI_ENV_PTR(env)->CallStaticVoidMethod(JNI_ENV_ARG(env, clz), mid); |
| |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_DISABLE, |
| JVMTI_EVENT_EXCEPTION, thread); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to disable JVMTI_EVENT_EXCEPTION: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (eventsCount != eventsExpected) { |
| printf("Wrong number of exception events: %d, expected: %d\n", |
| eventsCount, eventsExpected); |
| result = STATUS_FAILED; |
| } |
| return result; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
