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 #ifdef __cplusplus

    31 extern "C" {

    32 #endif

    33 

    34 #ifndef JNI_ENV_ARG

    35 

    36 #ifdef __cplusplus

    37 #define JNI_ENV_ARG(x, y) y

    38 #define JNI_ENV_PTR(x) x

    39 #else

    40 #define JNI_ENV_ARG(x,y) x, y

    41 #define JNI_ENV_PTR(x) (*x)

    42 #endif

    43 

    44 #endif

    45 

    46 #define PASSED 0

    47 #define STATUS_FAILED 2

    48 

    49 static jvmtiEnv *jvmti = NULL;

    50 static jint result = PASSED;

    51 static jboolean printdump = JNI_FALSE;

    52 

    53 #ifdef STATIC_BUILD

    54 JNIEXPORT jint JNICALL Agent_OnLoad_topthrgrp001(JavaVM *jvm, char *options, void *reserved) {

    55     return Agent_Initialize(jvm, options, reserved);

    56 }

    57 JNIEXPORT jint JNICALL Agent_OnAttach_topthrgrp001(JavaVM *jvm, char *options, void *reserved) {

    58     return Agent_Initialize(jvm, options, reserved);

    59 }

    60 JNIEXPORT jint JNI_OnLoad_topthrgrp001(JavaVM *jvm, char *options, void *reserved) {

    61     return JNI_VERSION_1_8;

    62 }

    63 #endif

    64 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {

    65     jint res;

    66 

    67     if (options != NULL && strcmp(options, "printdump") == 0) {

    68         printdump = JNI_TRUE;

    69     }

    70 

    71     res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti),

    72         JVMTI_VERSION_1_1);

    73     if (res != JNI_OK || jvmti == NULL) {

    74         printf("Wrong result of a valid call to GetEnv!\n");

    75         return JNI_ERR;

    76     }

    77 

    78     return JNI_OK;

    79 }

    80 

    81 JNIEXPORT jint JNICALL

    82 Java_nsk_jvmti_GetTopThreadGroups_topthrgrp001_check(JNIEnv *env, jclass cls) {

    83     jvmtiError err;

    84     jint i, groupCount = 0;

    85     jthreadGroup *groups = NULL;

    86     jvmtiThreadGroupInfo inf;

    87 

    88     if (jvmti == NULL) {

    89         printf("JVMTI client was not properly loaded!\n");

    90         return STATUS_FAILED;

    91     }

    92 

    93     if (printdump == JNI_TRUE) {

    94         printf(">>> getting top thread groups list ...\n");

    95     }

    96     err = (*jvmti)->GetTopThreadGroups(jvmti, &groupCount, &groups);

    97     if (err != JVMTI_ERROR_NONE) {

    98         printf("(GetTopThreadGroups) unexpected error: %s (%d)\n",

    99                TranslateError(err), err);

   100         result = STATUS_FAILED;

   101     }

   102 

   103     if (printdump == JNI_TRUE) {

   104         printf(">>> getting info about groups ...\n");

   105     }

   106     for (i = 0; i < groupCount; i++) {

   107         err = (*jvmti)->GetThreadGroupInfo(jvmti, groups[i], &inf);

   108         if (err != JVMTI_ERROR_NONE) {

   109             printf("(GetThreadGroupInfo#%d) unexpected error: %s (%d)\n",

   110                    i, TranslateError(err), err);

   111             result = STATUS_FAILED;

   112         } else {

   113             if (printdump == JNI_TRUE) {

   114                 printf(">>> group %d ----------------\n", i);

   115                 printf(">>>           name: %s\n", inf.name);

   116                 printf(">>>         parent: 0x%p\n", inf.parent);

   117                 printf(">>>   max priority: %d\n", inf.max_priority);

   118                 printf(">>>      is daemon: %s\n",

   119                        (inf.is_daemon==JNI_TRUE) ? "true" : "false");

   120             }

   121             if (inf.parent != NULL) {

   122                 printf("ERROR: thread group is not parentless!\n");

   123                 printf("   group name: %s\n", inf.name);

   124                 printf("       parent: 0x%p\n", inf.parent);

   125                 result = STATUS_FAILED;

   126             }

   127         }

   128     }

   129 

   130     if (printdump == JNI_TRUE) {

   131         printf(">>> done ...\n");

   132     }

   133 

   134     return result;

   135 }

   136 

   137 #ifdef __cplusplus

   138 }

   139 #endif