Andreas Gampe | 3c252f0 | 2016-10-27 18:25:17 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 2016 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 "ti_method.h" |
| 33 | |
| 34 | #include "art_jvmti.h" |
| 35 | #include "art_method-inl.h" |
| 36 | #include "base/enums.h" |
| 37 | #include "scoped_thread_state_change-inl.h" |
| 38 | |
| 39 | namespace openjdkjvmti { |
| 40 | |
| 41 | static jvmtiError CopyString(jvmtiEnv* env, const char* src, unsigned char** copy) { |
| 42 | size_t len = strlen(src) + 1; |
| 43 | unsigned char* buf; |
| 44 | jvmtiError ret = env->Allocate(len, &buf); |
| 45 | if (ret != ERR(NONE)) { |
| 46 | return ret; |
| 47 | } |
| 48 | strcpy(reinterpret_cast<char*>(buf), src); |
| 49 | *copy = buf; |
| 50 | return ret; |
| 51 | } |
| 52 | |
| 53 | jvmtiError MethodUtil::GetMethodName(jvmtiEnv* env, |
| 54 | jmethodID method, |
| 55 | char** name_ptr, |
| 56 | char** signature_ptr, |
| 57 | char** generic_ptr) { |
| 58 | art::ScopedObjectAccess soa(art::Thread::Current()); |
| 59 | art::ArtMethod* art_method = soa.DecodeMethod(method); |
| 60 | art_method = art_method->GetInterfaceMethodIfProxy(art::kRuntimePointerSize); |
| 61 | |
| 62 | JvmtiUniquePtr name_copy; |
| 63 | if (name_ptr != nullptr) { |
| 64 | const char* method_name = art_method->GetName(); |
| 65 | if (method_name == nullptr) { |
| 66 | method_name = "<error>"; |
| 67 | } |
| 68 | unsigned char* tmp; |
| 69 | jvmtiError ret = CopyString(env, method_name, &tmp); |
| 70 | if (ret != ERR(NONE)) { |
| 71 | return ret; |
| 72 | } |
| 73 | name_copy = MakeJvmtiUniquePtr(env, tmp); |
| 74 | *name_ptr = reinterpret_cast<char*>(tmp); |
| 75 | } |
| 76 | |
| 77 | JvmtiUniquePtr signature_copy; |
| 78 | if (signature_ptr != nullptr) { |
| 79 | const art::Signature sig = art_method->GetSignature(); |
| 80 | std::string str = sig.ToString(); |
| 81 | unsigned char* tmp; |
| 82 | jvmtiError ret = CopyString(env, str.c_str(), &tmp); |
| 83 | if (ret != ERR(NONE)) { |
| 84 | return ret; |
| 85 | } |
| 86 | signature_copy = MakeJvmtiUniquePtr(env, tmp); |
| 87 | *signature_ptr = reinterpret_cast<char*>(tmp); |
| 88 | } |
| 89 | |
| 90 | // TODO: Support generic signature. |
| 91 | *generic_ptr = nullptr; |
| 92 | |
| 93 | // Everything is fine, release the buffers. |
| 94 | name_copy.release(); |
| 95 | signature_copy.release(); |
| 96 | |
| 97 | return ERR(NONE); |
| 98 | } |
| 99 | |
| 100 | } // namespace openjdkjvmti |