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 34 #include "ti_breakpoint.h" 35 36 #include "art_jvmti.h" 37 #include "art_method-inl.h" 38 #include "base/enums.h" 39 #include "dex_file_annotations.h" 40 #include "events-inl.h" 41 #include "jni_internal.h" 42 #include "mirror/class-inl.h" 43 #include "mirror/object_array-inl.h" 44 #include "modifiers.h" 45 #include "nativehelper/ScopedLocalRef.h" 46 #include "runtime_callbacks.h" 47 #include "scoped_thread_state_change-inl.h" 48 #include "thread-current-inl.h" 49 #include "thread_list.h" 50 #include "ti_phase.h" 51 52 namespace openjdkjvmti { 53 54 size_t Breakpoint::hash() const { 55 return std::hash<uintptr_t> {}(reinterpret_cast<uintptr_t>(method_)) 56 ^ std::hash<jlocation> {}(location_); 57 } 58 59 Breakpoint::Breakpoint(art::ArtMethod* m, jlocation loc) : method_(m), location_(loc) { 60 DCHECK(!m->IsDefault() || !m->IsCopied() || !m->IsInvokable()) 61 << "Flags are: 0x" << std::hex << m->GetAccessFlags(); 62 } 63 64 void BreakpointUtil::RemoveBreakpointsInClass(ArtJvmTiEnv* env, art::mirror::Class* klass) { 65 std::vector<Breakpoint> to_remove; 66 for (const Breakpoint& b : env->breakpoints) { 67 if (b.GetMethod()->GetDeclaringClass() == klass) { 68 to_remove.push_back(b); 69 } 70 } 71 for (const Breakpoint& b : to_remove) { 72 auto it = env->breakpoints.find(b); 73 DCHECK(it != env->breakpoints.end()); 74 env->breakpoints.erase(it); 75 } 76 } 77 78 jvmtiError BreakpointUtil::SetBreakpoint(jvmtiEnv* jenv, jmethodID method, jlocation location) { 79 ArtJvmTiEnv* env = ArtJvmTiEnv::AsArtJvmTiEnv(jenv); 80 if (method == nullptr) { 81 return ERR(INVALID_METHODID); 82 } 83 // Need to get mutator_lock_ so we can find the interface version of any default methods. 84 art::ScopedObjectAccess soa(art::Thread::Current()); 85 art::ArtMethod* art_method = art::jni::DecodeArtMethod(method)->GetCanonicalMethod(); 86 if (location < 0 || static_cast<uint32_t>(location) >= 87 art_method->GetCodeItem()->insns_size_in_code_units_) { 88 return ERR(INVALID_LOCATION); 89 } 90 auto res_pair = env->breakpoints.insert(/* Breakpoint */ {art_method, location}); 91 if (!res_pair.second) { 92 // Didn't get inserted because it's already present! 93 return ERR(DUPLICATE); 94 } 95 return OK; 96 } 97 98 jvmtiError BreakpointUtil::ClearBreakpoint(jvmtiEnv* jenv, jmethodID method, jlocation location) { 99 ArtJvmTiEnv* env = ArtJvmTiEnv::AsArtJvmTiEnv(jenv); 100 if (method == nullptr) { 101 return ERR(INVALID_METHODID); 102 } 103 // Need to get mutator_lock_ so we can find the interface version of any default methods. 104 art::ScopedObjectAccess soa(art::Thread::Current()); 105 auto pos = env->breakpoints.find( 106 /* Breakpoint */ {art::jni::DecodeArtMethod(method)->GetCanonicalMethod(), location}); 107 if (pos == env->breakpoints.end()) { 108 return ERR(NOT_FOUND); 109 } 110 env->breakpoints.erase(pos); 111 return OK; 112 } 113 114 } // namespace openjdkjvmti 115
