| /* |
| * 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 |
| |
| #define ACC_PUBLIC 0x001 |
| #define ACC_PRIVATE 0x002 |
| #define ACC_PROTECTED 0x004 |
| #define ACC_STATIC 0x008 |
| #define ACC_FINAL 0x010 |
| #define ACC_SYNCHRONIZED 0x020 |
| #define ACC_NATIVE 0x100 |
| #define ACC_ABSTRACT 0x400 |
| #define ACC_STRICT 0x800 |
| |
| static jvmtiEnv *jvmti = NULL; |
| static jvmtiEventCallbacks callbacks; |
| static jint result = PASSED; |
| static jboolean printdump = JNI_FALSE; |
| |
| void printModifiers(jint mod) { |
| if (mod & ACC_PUBLIC) printf(" PUBLIC"); |
| if (mod & ACC_PRIVATE) printf(" PRIVATE"); |
| if (mod & ACC_PROTECTED) printf(" PROTECTED"); |
| if (mod & ACC_STATIC) printf(" STATIC"); |
| if (mod & ACC_FINAL) printf(" FINAL"); |
| if (mod & ACC_SYNCHRONIZED) printf(" SYNCHRONIZED"); |
| if (mod & ACC_NATIVE) printf(" NATIVE"); |
| if (mod & ACC_ABSTRACT) printf(" ABSTRACT"); |
| if (mod & ACC_STRICT) printf(" STRICT"); |
| printf(" (0x%0x)\n", mod); |
| } |
| |
| void checkMeth(jvmtiEnv *jvmti_env, JNIEnv *env, jclass cl, |
| char *name, char *sig, int stat, int flags) { |
| jvmtiError err; |
| jmethodID mid; |
| jint modifiers; |
| |
| if (stat) { |
| mid = JNI_ENV_PTR(env)->GetStaticMethodID(JNI_ENV_ARG(env, cl), |
| name, sig); |
| } else { |
| mid = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, cl), name, sig); |
| } |
| if (mid == NULL) { |
| printf("Cannot find MethodID for \"%s%s\"\n", name, sig); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| err = (*jvmti_env)->GetMethodModifiers(jvmti_env, mid, &modifiers); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("\"%s%s\"\n", name, sig); |
| printf("(GetClassModifiers) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> %s%s" , name, sig); |
| printModifiers(modifiers); |
| } |
| |
| if (modifiers != flags) { |
| printf("\"%s%s\" access flags expected:", name, sig); |
| printModifiers(flags); |
| printf("\t actual:"); |
| printModifiers(modifiers); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| void JNICALL |
| ClassLoad(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr, jclass cls) { |
| jvmtiError err; |
| char *sig, *generic; |
| |
| err = (*jvmti_env)->GetClassSignature(jvmti_env, cls, &sig, &generic); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetClassSignature) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return; |
| } |
| if (strcmp(sig, "Lnsk/jvmti/GetMethodModifiers/methmod001;") == 0) { |
| checkMeth(jvmti_env, (JNIEnv *)env, cls, |
| "run", "([Ljava/lang/String;Ljava/io/PrintStream;)I", |
| 1, ACC_PUBLIC | ACC_STATIC); |
| checkMeth(jvmti_env, (JNIEnv *)env, cls, |
| "meth_stat", "(ILjava/lang/String;)[F", |
| 1, ACC_PROTECTED | ACC_STATIC | ACC_FINAL); |
| } |
| } |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_methmod001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_methmod001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_methmod001(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; |
| } |
| |
| callbacks.ClassLoad = &ClassLoad; |
| 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; |
| } |
| |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, |
| JVMTI_EVENT_CLASS_LOAD, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to enable event JVMTI_EVENT_CLASS_LOAD: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| return JNI_OK; |
| } |
| |
| JNIEXPORT jint JNICALL Java_nsk_jvmti_GetMethodModifiers_methmod001_check(JNIEnv *env, jclass cls) { |
| jclass clsId; |
| |
| checkMeth(jvmti, env, cls, "<init>", "()V", 0, ACC_PUBLIC); |
| checkMeth(jvmti, env, cls, "meth_1", "(C)C", 0, ACC_PRIVATE); |
| checkMeth(jvmti, env, cls, "meth_2", "(FF)F", 0, ACC_STRICT); |
| checkMeth(jvmti, env, cls, "check", "()I", 1, ACC_NATIVE | ACC_STATIC); |
| clsId = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, |
| "nsk/jvmti/GetMethodModifiers/methmod001a")); |
| checkMeth(jvmti, env, clsId, "meth_new", |
| "()Lnsk/jvmti/GetMethodModifiers/methmod001;", 0, ACC_SYNCHRONIZED); |
| checkMeth(jvmti, env, clsId, "meth_abs", "()V", 0, ACC_ABSTRACT); |
| clsId = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, |
| "nsk/jvmti/GetMethodModifiers/methmod001$Inn")); |
| checkMeth(jvmti, env, clsId, "meth_inn", "(Ljava/lang/String;)V", |
| 0, ACC_PUBLIC | ACC_SYNCHRONIZED | ACC_FINAL); |
| |
| return result; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |