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

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

     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  */

    24 #include <stdio.h>

    25 #include <stdlib.h>

    26 #include <string.h>

    27 #include "jvmti.h"

    29 #ifdef __cplusplus

    30 extern "C" {

    31 #endif

    33 #ifndef JNI_ENV_ARG

    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

    43 #endif

    45 #define TranslateError(err) "JVMTI error"

    47 static jvmtiEnv *jvmti = NULL;

    49 static jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved);

    51 JNIEXPORT

    52 jint JNICALL Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {

    53     return Agent_Initialize(jvm, options, reserved);

    54 }

    56 JNIEXPORT

    57 jint JNICALL Agent_OnAttach(JavaVM *jvm, char *options, void *reserved) {

    58     return Agent_Initialize(jvm, options, reserved);

    59 }

    61 JNIEXPORT

    62 jint JNICALL JNI_OnLoad(JavaVM *jvm, void *reserved) {

    63     return JNI_VERSION_1_8;

    64 }

    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);

    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 }

    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;

    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     }

   103     size = (jint)sizeof(callbacks);

   105     memset(&callbacks, 0, sizeof(callbacks));

   106     callbacks.VMStart = Callback_VMStart;

   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     }

   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 }

   122 #ifdef __cplusplus

   123 }

   124 #endif

Mercurial > jdk8-mips64-public > hotspot / file revision

test/runtime/8233197/libJvmtiAgent.c@30fb8c8cceb9

test/runtime/8233197/libJvmtiAgent.c