jdk8-mips64-public/hotspot: test/runtime/8233197/libJvmtiAgent.c@30fb8c8cceb9 (annotated)

test/runtime/8233197/libJvmtiAgent.c@30fb8c8cceb9 (annotated)

test/runtime/8233197/libJvmtiAgent.c

Fri, 12 Jun 2020 02:59:56 +0100

author: jbachorik
date: Fri, 12 Jun 2020 02:59:56 +0100
changeset 9925: 30fb8c8cceb9
permissions: -rw-r--r--

8233197: Invert JvmtiExport::post_vm_initialized() and Jfr:on_vm_start() start-up order for correct option parsing
8246703: [TESTBUG] Add test for JDK-8233197
Reviewed-by: aph, adinn, neugens

 /*
  * Copyright (c) 2017, 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 <stdlib.h>
 #include <string.h>
 #include "jvmti.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 TranslateError(err) "JVMTI error"
 static jvmtiEnv *jvmti = NULL;
 static jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved);
 JNIEXPORT
 jint JNICALL Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
     return Agent_Initialize(jvm, options, reserved);
 }
 JNIEXPORT
 jint JNICALL Agent_OnAttach(JavaVM *jvm, char *options, void *reserved) {
     return Agent_Initialize(jvm, options, reserved);
 }
 JNIEXPORT
 jint JNICALL JNI_OnLoad(JavaVM *jvm, void *reserved) {
     return JNI_VERSION_1_8;
 }
 static void JNICALL
 Callback_VMStart(jvmtiEnv *jvmti_env, JNIEnv *env) {
     printf("Localizing jdk.jfr.FlightRecorder\n");
     // without fix for 8233197 the process will crash at the following line
     jclass cls = (*env)->FindClass(env, "jdk/jfr/FlightRecorder");
     jmethodID mid = (*env)->GetStaticMethodID(env, cls, "getFlightRecorder", "()Ljdk/jfr/FlightRecorder;");
     if (mid == 0) {
         printf("Unable to localize jdk.jfr.FlightRecorder#getFlightRecorder() method\n");
         // crash the tested JVM to make the test fail
         exit(-1);
     }
     printf("Going to initialize JFR subsystem ...\n");
     jobject jfr = (*env)->CallStaticObjectMethod(env, cls, mid);
     if (!(*env)->ExceptionCheck(env)) {
         // crash the tested JVM to make the test fail
         printf("JFR subsystem is wrongly initialized too early\n");
         exit(-2);
     }
     // exit VM
     exit(0);
 }
 static
 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
     jint res, size;
     jvmtiCapabilities caps;
     jvmtiEventCallbacks callbacks;
     jvmtiError err;
     res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti),
         JVMTI_VERSION_1_2);
     if (res != JNI_OK || jvmti == NULL) {
         printf("    Error: wrong result of a valid call to GetEnv!\n");
         return JNI_ERR;
     }
     size = (jint)sizeof(callbacks);
     memset(&callbacks, 0, sizeof(callbacks));
     callbacks.VMStart = Callback_VMStart;
     err = (*jvmti)->SetEventCallbacks(jvmti, &callbacks, size);
     if (err != JVMTI_ERROR_NONE) {
         printf("    Error in SetEventCallbacks: %s (%d)\n", TranslateError(err), err);
         return JNI_ERR;
     }
     err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, JVMTI_EVENT_VM_START, (jthread)NULL);
     if (err != JVMTI_ERROR_NONE) {
         printf("    Error in SetEventNotificationMode: %s (%d)\n", TranslateError(err), err);
         return JNI_ERR;
     }
     return JNI_OK;
 }
 #ifdef __cplusplus
 }
 #endif

Mercurial > jdk8-mips64-public > hotspot / annotate

test/runtime/8233197/libJvmtiAgent.c@30fb8c8cceb9 (annotated)

test/runtime/8233197/libJvmtiAgent.c