1 /* 2 * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #include <stdio.h> 25 #include <string.h> 26 #include "jvmti.h" 27 #include "agent_common.h" 28 #include "JVMTITools.h" 29 30 extern "C" { 31 32 33 #define PASSED 0 34 #define STATUS_FAILED 2 35 36 static jvmtiEnv *jvmti = NULL; 37 static jint result = PASSED; 38 static jboolean printdump = JNI_FALSE; 39 40 #ifdef STATIC_BUILD 41 JNIEXPORT jint JNICALL Agent_OnLoad_methloc002(JavaVM *jvm, char *options, void *reserved) { 42 return Agent_Initialize(jvm, options, reserved); 43 } 44 JNIEXPORT jint JNICALL Agent_OnAttach_methloc002(JavaVM *jvm, char *options, void *reserved) { 45 return Agent_Initialize(jvm, options, reserved); 46 } 47 JNIEXPORT jint JNI_OnLoad_methloc002(JavaVM *jvm, char *options, void *reserved) { 48 return JNI_VERSION_1_8; 49 } 50 #endif 51 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { 52 jint res; 53 54 if (options != NULL && strcmp(options, "printdump") == 0) { 55 printdump = JNI_TRUE; 56 } 57 58 res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1); 59 if (res != JNI_OK || jvmti == NULL) { 60 printf("Wrong result of a valid call to GetEnv!\n"); 61 return JNI_ERR; 62 } 63 64 return JNI_OK; 65 } 66 67 JNIEXPORT jint JNICALL 68 Java_nsk_jvmti_GetMethodLocation_methloc002_check(JNIEnv *env, jclass cls) { 69 jvmtiError err; 70 jmethodID mid; 71 jlocation startLocation; 72 jlocation endLocation; 73 74 if (jvmti == NULL) { 75 printf("JVMTI client was not properly loaded!\n"); 76 return STATUS_FAILED; 77 } 78 79 mid = env->GetMethodID(cls, "<init>", "()V"); 80 if (mid == NULL) { 81 printf("Cannot get method ID for \"<init>\"!\n"); 82 return STATUS_FAILED; 83 } 84 85 if (printdump == JNI_TRUE) { 86 printf(">>> invalid method check ...\n"); 87 } 88 err = jvmti->GetMethodLocation(NULL, &startLocation, &endLocation); 89 if (err != JVMTI_ERROR_INVALID_METHODID) { 90 printf("Error expected: JVMTI_ERROR_INVALID_METHODID,\n"); 91 printf("\tactual: %s (%d)\n", TranslateError(err), err); 92 result = STATUS_FAILED; 93 } 94 95 if (printdump == JNI_TRUE) { 96 printf(">>> (startLocationPtr) null pointer check ...\n"); 97 } 98 err = jvmti->GetMethodLocation(mid, NULL, &endLocation); 99 if (err != JVMTI_ERROR_NULL_POINTER) { 100 printf("(startLocationPtr) error expected: JVMTI_ERROR_NULL_POINTER,\n"); 101 printf("\tactual: %s (%d)\n", TranslateError(err), err); 102 result = STATUS_FAILED; 103 } 104 105 if (printdump == JNI_TRUE) { 106 printf(">>> (endLocationPtr) null pointer check ...\n"); 107 } 108 err = jvmti->GetMethodLocation(mid, &startLocation, NULL); 109 if (err != JVMTI_ERROR_NULL_POINTER) { 110 printf("(endLocationPtr) error expected: JVMTI_ERROR_NULL_POINTER,\n"); 111 printf("\tactual: %s (%d)\n", TranslateError(err), err); 112 result = STATUS_FAILED; 113 } 114 115 mid = env->GetStaticMethodID(cls, "check", "()I"); 116 if (mid == NULL) { 117 printf("Cannot get method ID for \"check\"!\n"); 118 return STATUS_FAILED; 119 } 120 121 if (printdump == JNI_TRUE) { 122 printf(">>> native method check ...\n"); 123 } 124 err = jvmti->GetMethodLocation(mid, &startLocation, &endLocation); 125 if (err != JVMTI_ERROR_NATIVE_METHOD) { 126 printf("Error expected: JVMTI_ERROR_NATIVE_METHOD,\n"); 127 printf("\tactual: %s (%d)\n", TranslateError(err), err); 128 result = STATUS_FAILED; 129 } 130 131 if (printdump == JNI_TRUE) { 132 printf(">>> ... done\n"); 133 } 134 135 return result; 136 } 137 138 } 139