/* * 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 #include #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 static jvmtiEnv *jvmti = NULL; static jvmtiCapabilities caps; static jvmtiEventCallbacks callbacks; static jint result = PASSED; static jboolean printdump = JNI_FALSE; static jmethodID mid = NULL; void JNICALL MethodExit(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr, jmethodID method, jboolean was_poped_by_exception, jvalue return_value) { jvmtiError err; jint entryCount, i; jvmtiLocalVariableEntry *table; jint intVal; jfloat floatVal; jdouble doubleVal; if (mid == method) { err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_DISABLE, JVMTI_EVENT_METHOD_EXIT, NULL); if (err != JVMTI_ERROR_NONE) { printf("Failed to disable metod exit event: %s (%d)\n", TranslateError(err), err); result = STATUS_FAILED; } err = (*jvmti)->GetLocalVariableTable(jvmti, mid, &entryCount, &table); if (err != JVMTI_ERROR_NONE) { printf("(GetLocalVariableTable) unexpected error: %s (%d)\n", TranslateError(err), err); result = STATUS_FAILED; return; } for (i = 0; i < entryCount; i++) { if (strcmp(table[i].name, "f") == 0) { if (printdump == JNI_TRUE) { printf(">>> (float/int) type mismatch check ...\n"); } err = (*jvmti)->GetLocalInt(jvmti, thr, 0, table[i].slot, &intVal); if (err != JVMTI_ERROR_TYPE_MISMATCH) { printf("Error expected: JVMTI_ERROR_TYPE_MISMATCH,\n"); printf("\tactual: %s (%d)\n", TranslateError(err), err); result = STATUS_FAILED; } if (printdump == JNI_TRUE) { printf(">>> (float/double) type mismatch check ...\n"); } err = (*jvmti)->GetLocalDouble(jvmti, thr, 0, table[i].slot, &doubleVal); if (err != JVMTI_ERROR_TYPE_MISMATCH) { printf("Error expected: JVMTI_ERROR_TYPE_MISMATCH,\n"); printf("\tactual: %s (%d)\n", TranslateError(err), err); result = STATUS_FAILED; } if (printdump == JNI_TRUE) { printf(">>> invalid slot check ...\n"); } err = (*jvmti)->GetLocalFloat(jvmti, thr, 0, 10, &floatVal); if (err != JVMTI_ERROR_INVALID_SLOT) { printf("Error expected: JVMTI_ERROR_INVALID_SLOT,\n"); printf("\tactual: %s (%d)\n", TranslateError(err), err); result = STATUS_FAILED; } if (printdump == JNI_TRUE) { printf(">>> null pointer check ...\n"); } err = (*jvmti)->GetLocalFloat(jvmti, thr, 0, table[i].slot, NULL); if (err != JVMTI_ERROR_NULL_POINTER) { printf("Error expected: JVMTI_ERROR_NULL_POINTER,\n"); printf("\tactual: %s (%d)\n", TranslateError(err), err); result = STATUS_FAILED; } } } for (i = 0; i < entryCount; i++) { (*jvmti)->Deallocate(jvmti, (unsigned char*)table[i].name); (*jvmti)->Deallocate(jvmti, (unsigned char*)table[i].signature); } (*jvmti)->Deallocate(jvmti, (unsigned char*)table); } } #ifdef STATIC_BUILD JNIEXPORT jint JNICALL Agent_OnLoad_getlocal002(JavaVM *jvm, char *options, void *reserved) { return Agent_Initialize(jvm, options, reserved); } JNIEXPORT jint JNICALL Agent_OnAttach_getlocal002(JavaVM *jvm, char *options, void *reserved) { return Agent_Initialize(jvm, options, reserved); } JNIEXPORT jint JNI_OnLoad_getlocal002(JavaVM *jvm, char *options, void *reserved) { return JNI_VERSION_1_8; } #endif jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { jint res; jvmtiError err; 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_access_local_variables) { printf("Warning: Access to local variables is not implemented\n"); } else if (caps.can_generate_method_exit_events) { callbacks.MethodExit = &MethodExit; 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: MethodExit event is not implemented\n"); } return JNI_OK; } JNIEXPORT void JNICALL Java_nsk_jvmti_GetLocalVariable_getlocal002_getMeth(JNIEnv *env, jclass cls) { jvmtiError err; if (jvmti == NULL) { printf("JVMTI client was not properly loaded!\n"); result = STATUS_FAILED; return; } if (!caps.can_access_local_variables || !caps.can_generate_method_exit_events) return; mid = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, cls), "meth01", "()D"); if (mid == NULL) { printf("Cannot find Method ID for meth01\n"); result = STATUS_FAILED; return; } err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, JVMTI_EVENT_METHOD_EXIT, NULL); if (err != JVMTI_ERROR_NONE) { printf("Failed to enable metod exit event: %s (%d)\n", TranslateError(err), err); result = STATUS_FAILED; } } JNIEXPORT void JNICALL Java_nsk_jvmti_GetLocalVariable_getlocal002_checkLoc(JNIEnv *env, jclass cls, jthread thr) { jvmtiError err; jvmtiLocalVariableEntry *table; jint entryCount, i; jmethodID mid; jint i1; if (jvmti == NULL) { return; } mid = JNI_ENV_PTR(env)->GetStaticMethodID(JNI_ENV_ARG(env, cls), "meth02", "()V"); if (mid == NULL) { printf("Cannot find Method ID for meth02\n"); result = STATUS_FAILED; return; } err = (*jvmti)->GetLocalVariableTable(jvmti, mid, &entryCount, &table); if (err != JVMTI_ERROR_NONE) { printf("(GetLocalVariableTable) unexpected error: %s (%d)\n", TranslateError(err), err); result = STATUS_FAILED; return; } for (i = 0; i < entryCount; i++) { if (strcmp(table[i].name, "i1") == 0) { if (printdump == JNI_TRUE) { printf(">>> invalid thread check ...\n"); } err = (*jvmti)->GetLocalInt(jvmti, cls, 0, table[i].slot, &i1); if (err != JVMTI_ERROR_INVALID_THREAD) { printf("Error expected: JVMTI_ERROR_INVALID_THREAD,\n"); printf("\tactual: %s (%d)\n", TranslateError(err), err); result = STATUS_FAILED; } if (printdump == JNI_TRUE) { printf(">>> invalid depth check ...\n"); } err = (*jvmti)->GetLocalInt(jvmti, thr, -1, table[i].slot, &i1); if (err != JVMTI_ERROR_ILLEGAL_ARGUMENT) { printf("Error expected: JVMTI_ERROR_ILLEGAL_ARGUMENT,\n"); printf("\tactual: %s (%d)\n", TranslateError(err), err); result = STATUS_FAILED; } if (printdump == JNI_TRUE) { printf(">>> opaque frame check ...\n"); } err = (*jvmti)->GetLocalInt(jvmti, thr, 0, table[i].slot, &i1); if (err != JVMTI_ERROR_OPAQUE_FRAME) { printf("Error expected: JVMTI_ERROR_OPAQUE_FRAME,\n"); printf("\tactual: %s (%d)\n", TranslateError(err), err); result = STATUS_FAILED; } } } } JNIEXPORT jint JNICALL Java_nsk_jvmti_GetLocalVariable_getlocal002_getRes(JNIEnv *env, jclass cls) { return result; } #ifdef __cplusplus } #endif