1 /* 2 * Copyright (c) 2012, 2018, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "code/debugInfoRec.hpp" 27 #include "code/nmethod.hpp" 28 #include "code/pcDesc.hpp" 29 #include "jfr/periodic/sampling/jfrCallTrace.hpp" 30 #include "oops/method.hpp" 31 #include "runtime/javaCalls.hpp" 32 #include "runtime/frame.inline.hpp" 33 #include "runtime/registerMap.hpp" 34 #include "runtime/thread.inline.hpp" 35 36 bool JfrGetCallTrace::find_top_frame(frame& top_frame, Method** method, frame& first_frame) { 37 assert(top_frame.cb() != NULL, "invariant"); 38 RegisterMap map(_thread, false); 39 frame candidate = top_frame; 40 for (int i = 0; i < MaxJavaStackTraceDepth * 2; ++i) { 41 if (candidate.is_entry_frame()) { 42 JavaCallWrapper *jcw = candidate.entry_frame_call_wrapper_if_safe(_thread); 43 if (jcw == NULL || jcw->is_first_frame()) { 44 return false; 45 } 46 } 47 48 if (candidate.is_interpreted_frame()) { 49 JavaThreadState state = _thread->thread_state(); 50 const bool known_valid = (state == _thread_in_native || state == _thread_in_vm || state == _thread_blocked); 51 if (known_valid || candidate.is_interpreted_frame_valid(_thread)) { 52 Method* im = candidate.interpreter_frame_method(); 53 if (known_valid && !Method::is_valid_method(im)) { 54 return false; 55 } 56 *method = im; 57 first_frame = candidate; 58 return true; 59 } 60 } | 1 /* 2 * Copyright (c) 2012, 2019, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "code/debugInfoRec.hpp" 27 #include "code/nmethod.hpp" 28 #include "code/pcDesc.hpp" 29 #include "jfr/periodic/sampling/jfrCallTrace.hpp" 30 #include "jfr/recorder/service/jfrOptionSet.hpp" 31 #include "oops/method.hpp" 32 #include "runtime/javaCalls.hpp" 33 #include "runtime/frame.inline.hpp" 34 #include "runtime/registerMap.hpp" 35 #include "runtime/thread.inline.hpp" 36 37 bool JfrGetCallTrace::find_top_frame(frame& top_frame, Method** method, frame& first_frame) { 38 assert(top_frame.cb() != NULL, "invariant"); 39 RegisterMap map(_thread, false); 40 frame candidate = top_frame; 41 for (u4 i = 0; i < (JfrOptionSet::stackdepth() * 2); ++i) { 42 if (candidate.is_entry_frame()) { 43 JavaCallWrapper *jcw = candidate.entry_frame_call_wrapper_if_safe(_thread); 44 if (jcw == NULL || jcw->is_first_frame()) { 45 return false; 46 } 47 } 48 49 if (candidate.is_interpreted_frame()) { 50 JavaThreadState state = _thread->thread_state(); 51 const bool known_valid = (state == _thread_in_native || state == _thread_in_vm || state == _thread_blocked); 52 if (known_valid || candidate.is_interpreted_frame_valid(_thread)) { 53 Method* im = candidate.interpreter_frame_method(); 54 if (known_valid && !Method::is_valid_method(im)) { 55 return false; 56 } 57 *method = im; 58 first_frame = candidate; 59 return true; 60 } 61 } |