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
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_ARG1(x)
38 #define JNI_ENV_PTR(x) x
39 #else
40 #define JNI_ENV_ARG(x,y) x, y
41 #define JNI_ENV_ARG1(x) x
42 #define JNI_ENV_PTR(x) (*x)
43 #endif
44
45 #endif
46
47 #define JVMTI_ENV_ARG JNI_ENV_ARG
48 #define JVMTI_ENV_ARG1 JNI_ENV_ARG1
49 #define JVMTI_ENV_PTR JNI_ENV_PTR
50
51 #define JVMTI_ERROR_CHECK(str,res) if ( res != JVMTI_ERROR_NONE) { printf(str); printf(" %d\n",res); return res;}
52 #define JVMTI_ERROR_CHECK_EXPECTED_ERROR(str,res,err) if ( res != err) { printf(str); printf("unexpected error %d\n",res); return res;}
53
54 #define JVMTI_ERROR_CHECK_VOID(str,res) if ( res != JVMTI_ERROR_NONE) { printf(str); printf(" %d\n",res); iGlobalStatus = 2; }
55
56 #define JVMTI_ERROR_CHECK_EXPECTED_ERROR_VOID(str,res,err) if ( res != err) { printf(str); printf(" unexpected error %d\n",res); iGlobalStatus = 2; }
57
58
59
60 jvmtiEnv *jvmti;
61 jint iGlobalStatus = 0;
62 static jvmtiCapabilities jvmti_caps;
63 static jvmtiEventCallbacks callbacks;
64
65
66 int printdump = 0;
67
68
69 void debug_printf(const char *fmt, ...) {
70 va_list args;
71
72 va_start(args, fmt);
73 if (printdump) {
74 vprintf(fmt, args);
75 }
76 va_end(args);
77 }
78
79
80 void JNICALL vmInit(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread) {
81 jvmtiError res;
82 debug_printf("VMInit event received\n");
83 res = JVMTI_ENV_PTR(jvmti_env)->DisposeEnvironment(JVMTI_ENV_ARG1(jvmti_env));
84 JVMTI_ERROR_CHECK_VOID("DisposeEnvironment returned error", res);
85 }
86
87
88 void init_callbacks() {
89
90 callbacks.VMInit = vmInit;
91
92 }
93
94
95 #ifdef STATIC_BUILD
96 JNIEXPORT jint JNICALL Agent_OnLoad_JvmtiTest(JavaVM *jvm, char *options, void *reserved) {
97 return Agent_Initialize(jvm, options, reserved);
98 }
99 JNIEXPORT jint JNICALL Agent_OnAttach_JvmtiTest(JavaVM *jvm, char *options, void *reserved) {
100 return Agent_Initialize(jvm, options, reserved);
101 }
102 JNIEXPORT jint JNI_OnLoad_JvmtiTest(JavaVM *jvm, char *options, void *reserved) {
103 return JNI_VERSION_1_8;
104 }
105 #endif
106 jint Agent_Initialize(JavaVM * jvm, char *options, void *reserved) {
107 jint res;
108 jint count;
109 char **properties;
110 int i;
111
112 if (options && strlen(options) > 0) {
113 if (strstr(options, "printdump")) {
114 printdump = 1;
115 }
116 }
117
118 res = JNI_ENV_PTR(jvm)->
119 GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti), JVMTI_VERSION_1_1);
120 if (res < 0) {
121 printf("Wrong result of a valid call to GetEnv!\n");
122 return JNI_ERR;
123 }
124
125 /* Enable event call backs. */
126 init_callbacks();
127 res = JVMTI_ENV_PTR(jvmti)->SetEventCallbacks(JVMTI_ENV_ARG(jvmti, &callbacks), sizeof(callbacks));
128 JVMTI_ERROR_CHECK("SetEventCallbacks returned error", res);
129
130 /* Add capabilities */
131 res = JVMTI_ENV_PTR(jvmti)->GetPotentialCapabilities(JVMTI_ENV_ARG(jvmti, &jvmti_caps));
132 JVMTI_ERROR_CHECK("GetPotentialCapabilities returned error", res);
133
134 res = JVMTI_ENV_PTR(jvmti)->AddCapabilities(JVMTI_ENV_ARG(jvmti, &jvmti_caps));
135 JVMTI_ERROR_CHECK("GetAddCapabilities returned error", res);
136
137
138 res = JVMTI_ENV_PTR(jvmti)->SetEventNotificationMode(JVMTI_ENV_ARG(jvmti,JVMTI_ENABLE),JVMTI_EVENT_VM_INIT,NULL);
139 JVMTI_ERROR_CHECK("SetEventNotificationMode for VM_INIT returned error", res);
140
141 res = JVMTI_ENV_PTR(jvmti)->GetSystemProperties(JVMTI_ENV_ARG(jvmti, &count), &properties);
142
143 JVMTI_ERROR_CHECK("GetSystemProperties returned error", res);
144
145 for (i=0; i< count; i++) {
146 char *value;
147
148 res = JVMTI_ENV_PTR(jvmti)->GetSystemProperty(JVMTI_ENV_ARG(jvmti, (const char *)properties[i]), &value);
149 JVMTI_ERROR_CHECK("GetSystemProperty returned error", res);
150 debug_printf(" %s %s \n", properties[i], value);
151
152 res = JVMTI_ENV_PTR(jvmti)->SetSystemProperty(JVMTI_ENV_ARG(jvmti, (const char *)properties[i]), value);
153 debug_printf("SetSystemProperty returned error %d\n", res);
154
155 }
156
157 return JNI_OK;
158 }
159
160
161 JNIEXPORT jint JNICALL
162 Java_nsk_jvmti_unit_functions_Dispose_JvmtiTest_GetResult(JNIEnv * env, jclass cls) {
163 return iGlobalStatus;
164 }
165
166
167 #ifdef __cplusplus
168 }
169 #endif