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comparison: test/runtime/8233197/libJvmtiAgent.c
test/runtime/8233197/libJvmtiAgent.c
- changeset 9925
- 30fb8c8cceb9
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| 9924:89fb452b3688 | 9925:30fb8c8cceb9 |
|---|---|
| 1 /* | |
| 2 * Copyright (c) 2017, 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 <stdlib.h> | |
| 26 #include <string.h> | |
| 27 #include "jvmti.h" | |
| 28 | |
| 29 #ifdef __cplusplus | |
| 30 extern "C" { | |
| 31 #endif | |
| 32 | |
| 33 #ifndef JNI_ENV_ARG | |
| 34 | |
| 35 #ifdef __cplusplus | |
| 36 #define JNI_ENV_ARG(x, y) y | |
| 37 #define JNI_ENV_PTR(x) x | |
| 38 #else | |
| 39 #define JNI_ENV_ARG(x,y) x, y | |
| 40 #define JNI_ENV_PTR(x) (*x) | |
| 41 #endif | |
| 42 | |
| 43 #endif | |
| 44 | |
| 45 #define TranslateError(err) "JVMTI error" | |
| 46 | |
| 47 static jvmtiEnv *jvmti = NULL; | |
| 48 | |
| 49 static jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved); | |
| 50 | |
| 51 JNIEXPORT | |
| 52 jint JNICALL Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) { | |
| 53 return Agent_Initialize(jvm, options, reserved); | |
| 54 } | |
| 55 | |
| 56 JNIEXPORT | |
| 57 jint JNICALL Agent_OnAttach(JavaVM *jvm, char *options, void *reserved) { | |
| 58 return Agent_Initialize(jvm, options, reserved); | |
| 59 } | |
| 60 | |
| 61 JNIEXPORT | |
| 62 jint JNICALL JNI_OnLoad(JavaVM *jvm, void *reserved) { | |
| 63 return JNI_VERSION_1_8; | |
| 64 } | |
| 65 | |
| 66 static void JNICALL | |
| 67 Callback_VMStart(jvmtiEnv *jvmti_env, JNIEnv *env) { | |
| 68 printf("Localizing jdk.jfr.FlightRecorder\n"); | |
| 69 // without fix for 8233197 the process will crash at the following line | |
| 70 jclass cls = (*env)->FindClass(env, "jdk/jfr/FlightRecorder"); | |
| 71 jmethodID mid = (*env)->GetStaticMethodID(env, cls, "getFlightRecorder", "()Ljdk/jfr/FlightRecorder;"); | |
| 72 if (mid == 0) { | |
| 73 printf("Unable to localize jdk.jfr.FlightRecorder#getFlightRecorder() method\n"); | |
| 74 // crash the tested JVM to make the test fail | |
| 75 exit(-1); | |
| 76 } | |
| 77 printf("Going to initialize JFR subsystem ...\n"); | |
| 78 jobject jfr = (*env)->CallStaticObjectMethod(env, cls, mid); | |
| 79 | |
| 80 if (!(*env)->ExceptionCheck(env)) { | |
| 81 // crash the tested JVM to make the test fail | |
| 82 printf("JFR subsystem is wrongly initialized too early\n"); | |
| 83 exit(-2); | |
| 84 } | |
| 85 // exit VM | |
| 86 exit(0); | |
| 87 } | |
| 88 | |
| 89 static | |
| 90 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { | |
| 91 jint res, size; | |
| 92 jvmtiCapabilities caps; | |
| 93 jvmtiEventCallbacks callbacks; | |
| 94 jvmtiError err; | |
| 95 | |
| 96 res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti), | |
| 97 JVMTI_VERSION_1_2); | |
| 98 if (res != JNI_OK || jvmti == NULL) { | |
| 99 printf(" Error: wrong result of a valid call to GetEnv!\n"); | |
| 100 return JNI_ERR; | |
| 101 } | |
| 102 | |
| 103 size = (jint)sizeof(callbacks); | |
| 104 | |
| 105 memset(&callbacks, 0, sizeof(callbacks)); | |
| 106 callbacks.VMStart = Callback_VMStart; | |
| 107 | |
| 108 err = (*jvmti)->SetEventCallbacks(jvmti, &callbacks, size); | |
| 109 if (err != JVMTI_ERROR_NONE) { | |
| 110 printf(" Error in SetEventCallbacks: %s (%d)\n", TranslateError(err), err); | |
| 111 return JNI_ERR; | |
| 112 } | |
| 113 | |
| 114 err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, JVMTI_EVENT_VM_START, (jthread)NULL); | |
| 115 if (err != JVMTI_ERROR_NONE) { | |
| 116 printf(" Error in SetEventNotificationMode: %s (%d)\n", TranslateError(err), err); | |
| 117 return JNI_ERR; | |
| 118 } | |
| 119 return JNI_OK; | |
| 120 } | |
| 121 | |
| 122 #ifdef __cplusplus | |
| 123 } | |
| 124 #endif |
