1 /*
2 * Copyright (c) 1999, 2005, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include <stdatomic.h>
27
28 #include "util.h"
29 #include "DDMImpl.h"
30 #include "inStream.h"
31 #include "outStream.h"
32
33 static _Atomic(jboolean) ddmIsActive = ATOMIC_VAR_INIT(JNI_FALSE);
34
35 static void
SendDdmBroadcast(JNIEnv * env,jboolean connected)36 SendDdmBroadcast(JNIEnv* env, jboolean connected)
37 {
38 WITH_LOCAL_REFS(env, 2) {
39 jclass ddm_class = JNI_FUNC_PTR(env,FindClass)(env, "org/apache/harmony/dalvik/ddmc/DdmServer");
40 if (JNI_FUNC_PTR(env,ExceptionCheck)(env)) {
41 JNI_FUNC_PTR(env,ExceptionClear)(env);
42 goto end;
43 }
44 jmethodID broadcast = JNI_FUNC_PTR(env,GetStaticMethodID)(env, ddm_class, "broadcast", "(I)V");
45 if (broadcast == NULL) {
46 ERROR_MESSAGE(("JDWP Cannot find DdmServer.broadcast(I)V method!"));
47 JNI_FUNC_PTR(env,ExceptionDescribe)(env);
48 JNI_FUNC_PTR(env,ExceptionClear)(env);
49 goto end;
50 }
51 jint event =
52 connected == JNI_TRUE ? 1 /* DdmServer.CONNECTED */ : 2 /*DdmServer.DISCONNECTED */;
53 JNI_FUNC_PTR(env,CallStaticVoidMethod)(env, ddm_class, broadcast, event);
54 if (JNI_FUNC_PTR(env,ExceptionCheck)(env)) {
55 LOG_ERROR(("DdmServer.broadcast %d failed", event));
56 JNI_FUNC_PTR(env,ExceptionDescribe)(env);
57 JNI_FUNC_PTR(env,ExceptionClear)(env);
58 }
59 if (!connected) {
60 // If we are disconnecting we also need to call DdmVmInternal.threadNotify(false)
61 jclass ddm_vm_internal =
62 JNI_FUNC_PTR(env,FindClass)(env, "org/apache/harmony/dalvik/ddmc/DdmVmInternal");
63 jmethodID thread_notify =
64 JNI_FUNC_PTR(env,GetStaticMethodID)(env, ddm_vm_internal, "threadNotify", "(Z)V");
65 if (thread_notify == NULL) {
66 ERROR_MESSAGE(("JDWP Cannot find DdmVmInternal.threadNotify(Z)V method!"));
67 JNI_FUNC_PTR(env,ExceptionDescribe)(env);
68 JNI_FUNC_PTR(env,ExceptionClear)(env);
69 goto end;
70 }
71 JNI_FUNC_PTR(env,CallStaticVoidMethod)(env, ddm_vm_internal, thread_notify, JNI_FALSE);
72 if (JNI_FUNC_PTR(env,ExceptionCheck)(env)) {
73 LOG_ERROR(("DdmVmInternal.threadNotify(false) failed"));
74 JNI_FUNC_PTR(env,ExceptionDescribe)(env);
75 JNI_FUNC_PTR(env,ExceptionClear)(env);
76 }
77 }
78 end: ;
79 } END_WITH_LOCAL_REFS(env);
80 }
81
82 static jboolean
chunk(PacketInputStream * in,PacketOutputStream * out)83 chunk(PacketInputStream *in, PacketOutputStream *out)
84 {
85 int i;
86 jint type_in;
87 jint type_out;
88 jint len_in;
89 jint len_out;
90 jbyte* data_in;
91 jbyte* data_out;
92 jvmtiError error;
93
94 type_in = inStream_readInt(in);
95 len_in = inStream_readInt(in);
96 data_in = inStream_readBytes(in, len_in, (jbyte*)jvmtiAllocate(len_in));
97
98 if (inStream_error(in)) {
99 return JNI_TRUE;
100 }
101
102 if (gdata->ddm_process_chunk == NULL) {
103 jvmtiDeallocate(data_in);
104 outStream_setError(out, JDWP_ERROR(NOT_IMPLEMENTED));
105 return JNI_TRUE;
106 }
107
108 jboolean ddm_newly_active = !atomic_exchange(&ddmIsActive, JNI_TRUE);
109 if (ddm_newly_active) {
110 SendDdmBroadcast(getEnv(), /* connected */JNI_TRUE);
111 }
112
113 LOG_JVMTI(("com.android.art.internal.ddm.process_chunk()"));
114 error = gdata->ddm_process_chunk(gdata->jvmti,
115 type_in,
116 len_in,
117 data_in,
118 &type_out,
119 &len_out,
120 &data_out);
121
122 jvmtiDeallocate(data_in);
123
124 if (error != JVMTI_ERROR_NONE) {
125 // For backwards-compatibility we do not actually return any error or any data at all
126 // here.
127 LOG_MISC(("Suppressing error from com.android.art.internal.ddm.process_chunk for backwards "
128 "compatibility. Error was %s (%d)", jvmtiErrorText(error), error));
129 return JNI_TRUE;
130 }
131
132 outStream_writeInt(out, type_out);
133 outStream_writeByteArray(out, len_out, data_out);
134 jvmtiDeallocate(data_out);
135
136 return JNI_TRUE;
137 }
138
DDM_initialize(void)139 void DDM_initialize(void)
140 {
141 atomic_exchange(&ddmIsActive, gdata->ddmInitiallyActive);
142 }
143
DDM_onDisconnect(void)144 void DDM_onDisconnect(void)
145 {
146 jboolean was_active = atomic_exchange(&ddmIsActive, JNI_FALSE);
147 if (was_active) {
148 JNIEnv* env = getEnv();
149 SendDdmBroadcast(getEnv(), /*connected*/ JNI_FALSE);
150 }
151 }
152
153 void *DDM_Cmds[] = { (void *)1
154 ,(void *)chunk
155 };
156