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 #ifndef ART_OPENJDKJVMTI_TI_STACK_H_ 33 #define ART_OPENJDKJVMTI_TI_STACK_H_ 34 35 #include "jni.h" 36 #include "jvmti.h" 37 38 #include "art_method.h" 39 #include "base/mutex.h" 40 #include "stack.h" 41 42 namespace openjdkjvmti { 43 44 class StackUtil { 45 public: 46 static jvmtiError GetAllStackTraces(jvmtiEnv* env, 47 jint max_frame_count, 48 jvmtiStackInfo** stack_info_ptr, 49 jint* thread_count_ptr) 50 REQUIRES(!art::Locks::thread_list_lock_); 51 52 static jvmtiError GetFrameCount(jvmtiEnv* env, jthread thread, jint* count_ptr); 53 54 static jvmtiError GetFrameLocation(jvmtiEnv* env, 55 jthread thread, 56 jint depth, 57 jmethodID* method_ptr, 58 jlocation* location_ptr); 59 60 static jvmtiError GetStackTrace(jvmtiEnv* env, 61 jthread thread, 62 jint start_depth, 63 jint max_frame_count, 64 jvmtiFrameInfo* frame_buffer, 65 jint* count_ptr); 66 67 static jvmtiError GetThreadListStackTraces(jvmtiEnv* env, 68 jint thread_count, 69 const jthread* thread_list, 70 jint max_frame_count, 71 jvmtiStackInfo** stack_info_ptr); 72 73 static jvmtiError GetOwnedMonitorStackDepthInfo(jvmtiEnv* env, 74 jthread thread, 75 jint* info_cnt_ptr, 76 jvmtiMonitorStackDepthInfo** info_ptr); 77 78 static jvmtiError GetOwnedMonitorInfo(jvmtiEnv* env, 79 jthread thread, 80 jint* owned_monitor_count_ptr, 81 jobject** owned_monitors_ptr); 82 83 static jvmtiError NotifyFramePop(jvmtiEnv* env, jthread thread, jint depth); 84 85 static jvmtiError PopFrame(jvmtiEnv* env, jthread thread); 86 }; 87 88 struct FindFrameAtDepthVisitor : art::StackVisitor { 89 public: FindFrameAtDepthVisitorFindFrameAtDepthVisitor90 FindFrameAtDepthVisitor(art::Thread* target, art::Context* ctx, jint depth) 91 REQUIRES_SHARED(art::Locks::mutator_lock_) 92 : art::StackVisitor(target, ctx, art::StackVisitor::StackWalkKind::kIncludeInlinedFrames), 93 found_frame_(false), 94 cnt_(0), 95 depth_(static_cast<size_t>(depth)) { } 96 FoundFrameFindFrameAtDepthVisitor97 bool FoundFrame() { 98 return found_frame_; 99 } 100 VisitFrameFindFrameAtDepthVisitor101 bool VisitFrame() NO_THREAD_SAFETY_ANALYSIS { 102 if (GetMethod()->IsRuntimeMethod()) { 103 return true; 104 } 105 if (cnt_ == depth_) { 106 // We found our frame, exit. 107 found_frame_ = true; 108 return false; 109 } else { 110 cnt_++; 111 return true; 112 } 113 } 114 115 art::ShadowFrame* GetOrCreateShadowFrame(/*out*/bool* created_frame) 116 REQUIRES_SHARED(art::Locks::mutator_lock_); 117 118 private: 119 bool found_frame_; 120 size_t cnt_; 121 size_t depth_; 122 }; 123 124 } // namespace openjdkjvmti 125 126 #endif // ART_OPENJDKJVMTI_TI_STACK_H_ 127