1 /* Copyright (C) 2017 The Android Open Source Project
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This file implements interfaces from the file jvmti.h. This implementation
5 * is licensed under the same terms as the file jvmti.h. The
6 * copyright and license information for the file jvmti.h follows.
7 *
8 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
9 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
10 *
11 * This code is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License version 2 only, as
13 * published by the Free Software Foundation. Oracle designates this
14 * particular file as subject to the "Classpath" exception as provided
15 * by Oracle in the LICENSE file that accompanied this code.
16 *
17 * This code is distributed in the hope that it will be useful, but WITHOUT
18 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
20 * version 2 for more details (a copy is included in the LICENSE file that
21 * accompanied this code).
22 *
23 * You should have received a copy of the GNU General Public License version
24 * 2 along with this work; if not, write to the Free Software Foundation,
25 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
26 *
27 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
28 * or visit www.oracle.com if you need additional information or have any
29 * questions.
30 */
31
32 #include <functional>
33 #include <vector>
34
35 #include "ti_ddms.h"
36
37 #include "art_jvmti.h"
38 #include "base/array_ref.h"
39 #include "debugger.h"
40 #include "scoped_thread_state_change-inl.h"
41 #include "thread-inl.h"
42
43 namespace openjdkjvmti {
44
HandleChunk(jvmtiEnv * env,jint type_in,jint length_in,const jbyte * data_in,jint * type_out,jint * data_length_out,jbyte ** data_out)45 jvmtiError DDMSUtil::HandleChunk(jvmtiEnv* env,
46 jint type_in,
47 jint length_in,
48 const jbyte* data_in,
49 /*out*/jint* type_out,
50 /*out*/jint* data_length_out,
51 /*out*/jbyte** data_out) {
52 if (env == nullptr || type_out == nullptr || data_out == nullptr || data_length_out == nullptr) {
53 return ERR(NULL_POINTER);
54 } else if (data_in == nullptr && length_in != 0) {
55 // Data-in shouldn't be null if we have data.
56 return ERR(ILLEGAL_ARGUMENT);
57 }
58
59 *data_length_out = 0;
60 *data_out = nullptr;
61
62 art::Thread* self = art::Thread::Current();
63 art::ScopedThreadStateChange(self, art::ThreadState::kNative);
64
65 art::ArrayRef<const jbyte> data_arr(data_in, length_in);
66 std::vector<uint8_t> out_data;
67 if (!art::Dbg::DdmHandleChunk(self->GetJniEnv(),
68 type_in,
69 data_arr,
70 /*out*/reinterpret_cast<uint32_t*>(type_out),
71 /*out*/&out_data)) {
72 LOG(WARNING) << "Something went wrong with handling the ddm chunk.";
73 return ERR(INTERNAL);
74 } else {
75 jvmtiError error = OK;
76 if (!out_data.empty()) {
77 JvmtiUniquePtr<jbyte[]> ret = AllocJvmtiUniquePtr<jbyte[]>(env, out_data.size(), &error);
78 if (error != OK) {
79 return error;
80 }
81 memcpy(ret.get(), out_data.data(), out_data.size());
82 *data_out = ret.release();
83 *data_length_out = static_cast<jint>(out_data.size());
84 }
85 return OK;
86 }
87 }
88
89 } // namespace openjdkjvmti
90