1 /*
2 * Copyright (c) 2007, 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 #include <string.h>
24 #include "jvmti.h"
25 #include "agent_common.h"
26 #include "jni_tools.h"
27 #include "jvmti_tools.h"
28 #include "jvmti_FollowRefObjects.h"
29
30 extern "C" {
31
32 static jlong g_timeout = 0;
33
34 /* ============================================================================= */
35
36 /** Agent algorithm. */
37 static void JNICALL
38 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
39 jvmtiError retCode;
40 jlong tag;
41 jint cnt;
42 jobject * pObjs;
43 jlong * pObjTags;
44
45 printf(">>> Check that FollowReferences(), IterateThroughHeap(), GetTag(), SetTag() and GetObjectsWithTags() \n"
46 " return an error if env. doesn't possess can_tag_objects capability\n");
47
48 retCode = jvmti->FollowReferences((jint) 0, /* heap filter */
49 NULL, /* class */
50 NULL, /* inital object */
51 &g_wrongHeapCallbacks,
52 (const void *) &g_fakeUserData);
53
54 if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_MUST_POSSESS_CAPABILITY ) ) {
55 NSK_COMPLAIN1("FollowReferences() returned %i", retCode);
56 nsk_jvmti_setFailStatus();
57 }
58
59 retCode = jvmti->IterateThroughHeap((jint) 0, /* heap filter */
60 NULL, /* class */
61 &g_wrongHeapCallbacks,
62 (const void *) &g_fakeUserData);
63
64 if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_MUST_POSSESS_CAPABILITY ) ) {
65 NSK_COMPLAIN1("IterateThroughHeap() returned %i", retCode);
66 nsk_jvmti_setFailStatus();
67 }
68
69 retCode = jvmti->GetTag((jobject) &g_wrongHeapCallbacks, &tag);
70
71 if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_MUST_POSSESS_CAPABILITY ) ) {
72 NSK_COMPLAIN1("GetTag() returned %i", retCode);
73 nsk_jvmti_setFailStatus();
74 }
75
76 retCode = jvmti->SetTag((jobject) &g_wrongHeapCallbacks, tag);
77
78 if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_MUST_POSSESS_CAPABILITY ) ) {
79 NSK_COMPLAIN1("SetTag() returned %i", retCode);
80 nsk_jvmti_setFailStatus();
81 }
82
83 retCode = jvmti->GetObjectsWithTags(1, &tag, &cnt, &pObjs, &pObjTags);
84
85 if ( ! NSK_VERIFY(retCode == JVMTI_ERROR_MUST_POSSESS_CAPABILITY ) ) {
86 NSK_COMPLAIN1("GetObjectsWithTags() returned %i", retCode);
87 nsk_jvmti_setFailStatus();
88 }
89
90 printf(">>> Let debugee to finish\n");
91 fflush(0);
92
93 if (!NSK_VERIFY(nsk_jvmti_waitForSync(g_timeout))) {
94 return;
95 }
96
97 if (!NSK_VERIFY(nsk_jvmti_resumeSync())) {
98 return;
99 }
100 } /* agentProc */
101
102
103 /* ============================================================================= */
104
105 /** Agent library initialization. */
106 #ifdef STATIC_BUILD
107 JNIEXPORT jint JNICALL Agent_OnLoad_followref005(JavaVM *jvm, char *options, void *reserved) {
108 return Agent_Initialize(jvm, options, reserved);
109 }
110 JNIEXPORT jint JNICALL Agent_OnAttach_followref005(JavaVM *jvm, char *options, void *reserved) {
111 return Agent_Initialize(jvm, options, reserved);
112 }
113 JNIEXPORT jint JNI_OnLoad_followref005(JavaVM *jvm, char *options, void *reserved) {
114 return JNI_VERSION_1_8;
115 }
116 #endif
117 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
118 jvmtiEnv* jvmti = NULL;
119
120 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) {
121 return JNI_ERR;
122 }
123
124 g_timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
125
126 if (!NSK_VERIFY((jvmti = nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) {
127 return JNI_ERR;
128 }
129
130 {
131 jvmtiCapabilities caps;
132
133 memset(&caps, 0, sizeof(caps));
134 /* Don't add can_tag_objects capability */
135 if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps))) {
136 return JNI_ERR;
137 }
138 }
139
140 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) {
141 return JNI_ERR;
142 }
143
144 return JNI_OK;
145 } /* Agent_OnLoad */
146
147
148 /* ============================================================================= */
149
150 }