|
1 /* |
|
2 * Copyright (c) 2013, 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 <string.h> |
|
25 #include <stdio.h> |
|
26 |
|
27 #include "jvmti.h" |
|
28 |
|
29 #define CLASS_NAME "Lcompiler/jsr292/cr8026328/Test8026328;" |
|
30 #define METHOD_NAME "main" |
|
31 |
|
32 static jvmtiEnv *jvmti = NULL; |
|
33 |
|
34 |
|
35 void JNICALL |
|
36 classprepare(jvmtiEnv* jvmti_env, |
|
37 JNIEnv* jni_env, |
|
38 jthread thread, |
|
39 jclass klass) { |
|
40 |
|
41 char* buf; |
|
42 (*jvmti)->GetClassSignature(jvmti, |
|
43 klass, |
|
44 &buf, |
|
45 NULL); |
|
46 if (strcmp(CLASS_NAME, buf) == 0) { |
|
47 jint nMethods; |
|
48 jmethodID* methods; |
|
49 int i; |
|
50 (*jvmti)->GetClassMethods(jvmti, |
|
51 klass, |
|
52 &nMethods, |
|
53 &methods); |
|
54 for (i = 0; i < nMethods; i++) { |
|
55 char* name; |
|
56 (*jvmti)->GetMethodName(jvmti, |
|
57 methods[i], |
|
58 &name, |
|
59 NULL, |
|
60 NULL); |
|
61 if (strcmp(METHOD_NAME, name) == 0) { |
|
62 printf("Setting breakpoint\n"); |
|
63 fflush(stdout); |
|
64 (*jvmti)->SetBreakpoint(jvmti, methods[i], 0); |
|
65 } |
|
66 } |
|
67 } |
|
68 } |
|
69 |
|
70 |
|
71 void JNICALL |
|
72 breakpoint(jvmtiEnv* jvmti_env, |
|
73 JNIEnv* jni_env, |
|
74 jthread thread, |
|
75 jmethodID method, |
|
76 jlocation location) { |
|
77 |
|
78 jclass declaring_class; |
|
79 char* name; |
|
80 char* cname; |
|
81 (*jvmti)->GetMethodName(jvmti, |
|
82 method, |
|
83 &name, |
|
84 NULL, |
|
85 NULL); |
|
86 (*jvmti)->GetMethodDeclaringClass(jvmti, |
|
87 method, |
|
88 &declaring_class); |
|
89 (*jvmti)->GetClassSignature(jvmti, |
|
90 declaring_class, |
|
91 &cname, |
|
92 NULL); |
|
93 printf("Hit breakpoint at %s::%s:%d\n", cname, name, (int) location); |
|
94 fflush(stdout); |
|
95 } |
|
96 |
|
97 |
|
98 JNIEXPORT jint JNICALL |
|
99 Agent_OnLoad(JavaVM* vm, |
|
100 char* options, |
|
101 void* reserved) { |
|
102 |
|
103 jvmtiCapabilities capa; |
|
104 jvmtiEventCallbacks cbs = {0}; |
|
105 |
|
106 (*vm)->GetEnv(vm, (void**)&jvmti, JVMTI_VERSION_1_0); |
|
107 |
|
108 memset(&capa, 0, sizeof(capa)); |
|
109 capa.can_generate_breakpoint_events = 1; |
|
110 capa.can_generate_single_step_events = 1; |
|
111 (*jvmti)->AddCapabilities(jvmti, &capa); |
|
112 |
|
113 cbs.ClassPrepare = classprepare; |
|
114 cbs.Breakpoint = breakpoint; |
|
115 (*jvmti)->SetEventCallbacks(jvmti, &cbs, sizeof(cbs)); |
|
116 (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, JVMTI_EVENT_CLASS_PREPARE, NULL); |
|
117 (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, JVMTI_EVENT_BREAKPOINT, NULL); |
|
118 printf("Loaded agent\n"); |
|
119 fflush(stdout); |
|
120 |
|
121 return 0; |
|
122 } |