aoqi@0: /*
drchase@7605:  * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #include "precompiled.hpp"
aoqi@0: #include "classfile/javaClasses.hpp"
aoqi@0: #include "classfile/systemDictionary.hpp"
aoqi@0: #include "classfile/vmSymbols.hpp"
aoqi@0: #include "code/codeCache.hpp"
aoqi@0: #include "code/debugInfoRec.hpp"
aoqi@0: #include "code/nmethod.hpp"
aoqi@0: #include "code/pcDesc.hpp"
aoqi@0: #include "code/scopeDesc.hpp"
aoqi@0: #include "interpreter/interpreter.hpp"
aoqi@0: #include "interpreter/oopMapCache.hpp"
aoqi@0: #include "memory/resourceArea.hpp"
aoqi@0: #include "oops/instanceKlass.hpp"
aoqi@0: #include "oops/oop.inline.hpp"
aoqi@0: #include "runtime/handles.inline.hpp"
aoqi@0: #include "runtime/objectMonitor.hpp"
aoqi@0: #include "runtime/objectMonitor.inline.hpp"
aoqi@0: #include "runtime/signature.hpp"
aoqi@0: #include "runtime/stubRoutines.hpp"
aoqi@0: #include "runtime/synchronizer.hpp"
aoqi@0: #include "runtime/vframe.hpp"
aoqi@0: #include "runtime/vframeArray.hpp"
aoqi@0: #include "runtime/vframe_hp.hpp"
aoqi@0: 
aoqi@0: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
aoqi@0: 
aoqi@0: vframe::vframe(const frame* fr, const RegisterMap* reg_map, JavaThread* thread)
aoqi@0: : _reg_map(reg_map), _thread(thread) {
aoqi@0:   assert(fr != NULL, "must have frame");
aoqi@0:   _fr = *fr;
aoqi@0: }
aoqi@0: 
aoqi@0: vframe::vframe(const frame* fr, JavaThread* thread)
aoqi@0: : _reg_map(thread), _thread(thread) {
aoqi@0:   assert(fr != NULL, "must have frame");
aoqi@0:   _fr = *fr;
aoqi@0: }
aoqi@0: 
aoqi@0: vframe* vframe::new_vframe(const frame* f, const RegisterMap* reg_map, JavaThread* thread) {
aoqi@0:   // Interpreter frame
aoqi@0:   if (f->is_interpreted_frame()) {
aoqi@0:     return new interpretedVFrame(f, reg_map, thread);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Compiled frame
aoqi@0:   CodeBlob* cb = f->cb();
aoqi@0:   if (cb != NULL) {
aoqi@0:     if (cb->is_nmethod()) {
aoqi@0:       nmethod* nm = (nmethod*)cb;
aoqi@0:       return new compiledVFrame(f, reg_map, thread, nm);
aoqi@0:     }
aoqi@0: 
aoqi@0:     if (f->is_runtime_frame()) {
aoqi@0:       // Skip this frame and try again.
aoqi@0:       RegisterMap temp_map = *reg_map;
aoqi@0:       frame s = f->sender(&temp_map);
aoqi@0:       return new_vframe(&s, &temp_map, thread);
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   // External frame
aoqi@0:   return new externalVFrame(f, reg_map, thread);
aoqi@0: }
aoqi@0: 
aoqi@0: vframe* vframe::sender() const {
aoqi@0:   RegisterMap temp_map = *register_map();
aoqi@0:   assert(is_top(), "just checking");
aoqi@0:   if (_fr.is_entry_frame() && _fr.is_first_frame()) return NULL;
aoqi@0:   frame s = _fr.real_sender(&temp_map);
aoqi@0:   if (s.is_first_frame()) return NULL;
aoqi@0:   return vframe::new_vframe(&s, &temp_map, thread());
aoqi@0: }
aoqi@0: 
aoqi@0: vframe* vframe::top() const {
aoqi@0:   vframe* vf = (vframe*) this;
aoqi@0:   while (!vf->is_top()) vf = vf->sender();
aoqi@0:   return vf;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: javaVFrame* vframe::java_sender() const {
aoqi@0:   vframe* f = sender();
aoqi@0:   while (f != NULL) {
aoqi@0:     if (f->is_java_frame()) return javaVFrame::cast(f);
aoqi@0:     f = f->sender();
aoqi@0:   }
aoqi@0:   return NULL;
aoqi@0: }
aoqi@0: 
aoqi@0: // ------------- javaVFrame --------------
aoqi@0: 
aoqi@0: GrowableArray<MonitorInfo*>* javaVFrame::locked_monitors() {
aoqi@0:   assert(SafepointSynchronize::is_at_safepoint() || JavaThread::current() == thread(),
aoqi@0:          "must be at safepoint or it's a java frame of the current thread");
aoqi@0: 
aoqi@0:   GrowableArray<MonitorInfo*>* mons = monitors();
aoqi@0:   GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(mons->length());
aoqi@0:   if (mons->is_empty()) return result;
aoqi@0: 
aoqi@0:   bool found_first_monitor = false;
aoqi@0:   ObjectMonitor *pending_monitor = thread()->current_pending_monitor();
aoqi@0:   ObjectMonitor *waiting_monitor = thread()->current_waiting_monitor();
aoqi@0:   oop pending_obj = (pending_monitor != NULL ? (oop) pending_monitor->object() : (oop) NULL);
aoqi@0:   oop waiting_obj = (waiting_monitor != NULL ? (oop) waiting_monitor->object() : (oop) NULL);
aoqi@0: 
aoqi@0:   for (int index = (mons->length()-1); index >= 0; index--) {
aoqi@0:     MonitorInfo* monitor = mons->at(index);
aoqi@0:     if (monitor->eliminated() && is_compiled_frame()) continue; // skip eliminated monitor
aoqi@0:     oop obj = monitor->owner();
aoqi@0:     if (obj == NULL) continue; // skip unowned monitor
aoqi@0:     //
aoqi@0:     // Skip the monitor that the thread is blocked to enter or waiting on
aoqi@0:     //
aoqi@0:     if (!found_first_monitor && (obj == pending_obj || obj == waiting_obj)) {
aoqi@0:       continue;
aoqi@0:     }
aoqi@0:     found_first_monitor = true;
aoqi@0:     result->append(monitor);
aoqi@0:   }
aoqi@0:   return result;
aoqi@0: }
aoqi@0: 
aoqi@0: static void print_locked_object_class_name(outputStream* st, Handle obj, const char* lock_state) {
aoqi@0:   if (obj.not_null()) {
aoqi@0:     st->print("\t- %s <" INTPTR_FORMAT "> ", lock_state, (address)obj());
aoqi@0:     if (obj->klass() == SystemDictionary::Class_klass()) {
vkempik@8060:       st->print_cr("(a java.lang.Class for %s)", java_lang_Class::as_external_name(obj()));
aoqi@0:     } else {
aoqi@0:       Klass* k = obj->klass();
aoqi@0:       st->print_cr("(a %s)", k->external_name());
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: void javaVFrame::print_lock_info_on(outputStream* st, int frame_count) {
aoqi@0:   ResourceMark rm;
aoqi@0: 
aoqi@0:   // If this is the first frame, and java.lang.Object.wait(...) then print out the receiver.
aoqi@0:   if (frame_count == 0) {
aoqi@0:     if (method()->name() == vmSymbols::wait_name() &&
aoqi@0:         method()->method_holder()->name() == vmSymbols::java_lang_Object()) {
aoqi@0:       StackValueCollection* locs = locals();
aoqi@0:       if (!locs->is_empty()) {
aoqi@0:         StackValue* sv = locs->at(0);
aoqi@0:         if (sv->type() == T_OBJECT) {
aoqi@0:           Handle o = locs->at(0)->get_obj();
aoqi@0:           print_locked_object_class_name(st, o, "waiting on");
aoqi@0:         }
aoqi@0:       }
aoqi@0:     } else if (thread()->current_park_blocker() != NULL) {
aoqi@0:       oop obj = thread()->current_park_blocker();
aoqi@0:       Klass* k = obj->klass();
aoqi@0:       st->print_cr("\t- %s <" INTPTR_FORMAT "> (a %s)", "parking to wait for ", (address)obj, k->external_name());
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0: 
aoqi@0:   // Print out all monitors that we have locked or are trying to lock
aoqi@0:   GrowableArray<MonitorInfo*>* mons = monitors();
aoqi@0:   if (!mons->is_empty()) {
aoqi@0:     bool found_first_monitor = false;
aoqi@0:     for (int index = (mons->length()-1); index >= 0; index--) {
aoqi@0:       MonitorInfo* monitor = mons->at(index);
aoqi@0:       if (monitor->eliminated() && is_compiled_frame()) { // Eliminated in compiled code
aoqi@0:         if (monitor->owner_is_scalar_replaced()) {
aoqi@0:           Klass* k = java_lang_Class::as_Klass(monitor->owner_klass());
drchase@7605:           // format below for lockbits matches this one.
aoqi@0:           st->print("\t- eliminated <owner is scalar replaced> (a %s)", k->external_name());
aoqi@0:         } else {
aoqi@0:           oop obj = monitor->owner();
aoqi@0:           if (obj != NULL) {
aoqi@0:             print_locked_object_class_name(st, obj, "eliminated");
aoqi@0:           }
aoqi@0:         }
aoqi@0:         continue;
aoqi@0:       }
aoqi@0:       if (monitor->owner() != NULL) {
aoqi@0:         // the monitor is associated with an object, i.e., it is locked
aoqi@0: 
aoqi@0:         // First, assume we have the monitor locked. If we haven't found an
aoqi@0:         // owned monitor before and this is the first frame, then we need to
aoqi@0:         // see if we have completed the lock or we are blocked trying to
aoqi@0:         // acquire it - we can only be blocked if the monitor is inflated
aoqi@0: 
drchase@7605:         markOop mark = NULL;
aoqi@0:         const char *lock_state = "locked"; // assume we have the monitor locked
aoqi@0:         if (!found_first_monitor && frame_count == 0) {
drchase@7605:           mark = monitor->owner()->mark();
aoqi@0:           if (mark->has_monitor() &&
aoqi@0:               ( // we have marked ourself as pending on this monitor
aoqi@0:                 mark->monitor() == thread()->current_pending_monitor() ||
aoqi@0:                 // we are not the owner of this monitor
aoqi@0:                 !mark->monitor()->is_entered(thread())
aoqi@0:               )) {
aoqi@0:             lock_state = "waiting to lock";
drchase@7605:           } else {
drchase@7605:             mark = NULL; // Disable printing below
aoqi@0:           }
aoqi@0:         }
drchase@7605:         print_locked_object_class_name(st, monitor->owner(), lock_state);
drchase@7605:         if (Verbose && mark != NULL) {
drchase@7605:           // match with format above, replacing "-" with " ".
drchase@7605:           st->print("\t  lockbits=");
drchase@7605:           mark->print_on(st);
drchase@7605:           st->cr();
drchase@7605:         }
aoqi@0: 
aoqi@0:         found_first_monitor = true;
aoqi@0:       }
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: // ------------- interpretedVFrame --------------
aoqi@0: 
aoqi@0: u_char* interpretedVFrame::bcp() const {
aoqi@0:   return fr().interpreter_frame_bcp();
aoqi@0: }
aoqi@0: 
aoqi@0: void interpretedVFrame::set_bcp(u_char* bcp) {
aoqi@0:   fr().interpreter_frame_set_bcp(bcp);
aoqi@0: }
aoqi@0: 
aoqi@0: intptr_t* interpretedVFrame::locals_addr_at(int offset) const {
aoqi@0:   assert(fr().is_interpreted_frame(), "frame should be an interpreted frame");
aoqi@0:   return fr().interpreter_frame_local_at(offset);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: GrowableArray<MonitorInfo*>* interpretedVFrame::monitors() const {
aoqi@0:   GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(5);
aoqi@0:   for (BasicObjectLock* current = (fr().previous_monitor_in_interpreter_frame(fr().interpreter_frame_monitor_begin()));
aoqi@0:        current >= fr().interpreter_frame_monitor_end();
aoqi@0:        current = fr().previous_monitor_in_interpreter_frame(current)) {
aoqi@0:     result->push(new MonitorInfo(current->obj(), current->lock(), false, false));
aoqi@0:   }
aoqi@0:   return result;
aoqi@0: }
aoqi@0: 
aoqi@0: int interpretedVFrame::bci() const {
aoqi@0:   return method()->bci_from(bcp());
aoqi@0: }
aoqi@0: 
aoqi@0: Method* interpretedVFrame::method() const {
aoqi@0:   return fr().interpreter_frame_method();
aoqi@0: }
aoqi@0: 
mgronlun@7215: static StackValue* create_stack_value_from_oop_map(const InterpreterOopMap& oop_mask,
mgronlun@7215:                                                    int index,
mgronlun@7215:                                                    const intptr_t* const addr) {
aoqi@0: 
mgronlun@7215:   assert(index >= 0 &&
mgronlun@7215:          index < oop_mask.number_of_entries(), "invariant");
mgronlun@7215: 
mgronlun@7215:   // categorize using oop_mask
mgronlun@7215:   if (oop_mask.is_oop(index)) {
mgronlun@7215:     // reference (oop) "r"
mgronlun@7215:     Handle h(addr != NULL ? (*(oop*)addr) : (oop)NULL);
mgronlun@7215:     return new StackValue(h);
mgronlun@7215:   }
mgronlun@7215:   // value (integer) "v"
mgronlun@7215:   return new StackValue(addr != NULL ? *addr : 0);
mgronlun@7215: }
mgronlun@7215: 
mgronlun@7215: static bool is_in_expression_stack(const frame& fr, const intptr_t* const addr) {
mgronlun@7215:   assert(addr != NULL, "invariant");
mgronlun@7215: 
mgronlun@7215:   // Ensure to be 'inside' the expresion stack (i.e., addr >= sp for Intel).
mgronlun@7215:   // In case of exceptions, the expression stack is invalid and the sp
mgronlun@7215:   // will be reset to express this condition.
mgronlun@7215:   if (frame::interpreter_frame_expression_stack_direction() > 0) {
mgronlun@7215:     return addr <= fr.interpreter_frame_tos_address();
aoqi@0:   }
aoqi@0: 
mgronlun@7215:   return addr >= fr.interpreter_frame_tos_address();
mgronlun@7215: }
aoqi@0: 
mgronlun@7215: static void stack_locals(StackValueCollection* result,
mgronlun@7215:                          int length,
mgronlun@7215:                          const InterpreterOopMap& oop_mask,
mgronlun@7215:                          const frame& fr) {
mgronlun@7215: 
mgronlun@7215:   assert(result != NULL, "invariant");
mgronlun@7215: 
mgronlun@7215:   for (int i = 0; i < length; ++i) {
mgronlun@7215:     const intptr_t* const addr = fr.interpreter_frame_local_at(i);
mgronlun@7215:     assert(addr != NULL, "invariant");
mgronlun@7215:     assert(addr >= fr.sp(), "must be inside the frame");
mgronlun@7215: 
mgronlun@7215:     StackValue* const sv = create_stack_value_from_oop_map(oop_mask, i, addr);
mgronlun@7215:     assert(sv != NULL, "sanity check");
mgronlun@7215: 
mgronlun@7215:     result->add(sv);
mgronlun@7215:   }
mgronlun@7215: }
mgronlun@7215: 
mgronlun@7215: static void stack_expressions(StackValueCollection* result,
mgronlun@7215:                               int length,
mgronlun@7215:                               int max_locals,
mgronlun@7215:                               const InterpreterOopMap& oop_mask,
mgronlun@7215:                               const frame& fr) {
mgronlun@7215: 
mgronlun@7215:   assert(result != NULL, "invariant");
mgronlun@7215: 
mgronlun@7215:   for (int i = 0; i < length; ++i) {
mgronlun@7215:     const intptr_t* addr = fr.interpreter_frame_expression_stack_at(i);
mgronlun@7215:     assert(addr != NULL, "invariant");
mgronlun@7215:     if (!is_in_expression_stack(fr, addr)) {
mgronlun@7215:       // Need to ensure no bogus escapes.
mgronlun@7215:       addr = NULL;
mgronlun@7215:     }
mgronlun@7215: 
mgronlun@7215:     StackValue* const sv = create_stack_value_from_oop_map(oop_mask,
mgronlun@7215:                                                            i + max_locals,
mgronlun@7215:                                                            addr);
mgronlun@7215:     assert(sv != NULL, "sanity check");
mgronlun@7215: 
mgronlun@7215:     result->add(sv);
mgronlun@7215:   }
mgronlun@7215: }
mgronlun@7215: 
mgronlun@7215: StackValueCollection* interpretedVFrame::locals() const {
mgronlun@7215:   return stack_data(false);
mgronlun@7215: }
mgronlun@7215: 
mgronlun@7215: StackValueCollection* interpretedVFrame::expressions() const {
mgronlun@7215:   return stack_data(true);
mgronlun@7215: }
mgronlun@7215: 
mgronlun@7215: /*
mgronlun@7215:  * Worker routine for fetching references and/or values
mgronlun@7215:  * for a particular bci in the interpretedVFrame.
mgronlun@7215:  *
mgronlun@7215:  * Returns data for either "locals" or "expressions",
mgronlun@7215:  * using bci relative oop_map (oop_mask) information.
mgronlun@7215:  *
mgronlun@7215:  * @param expressions  bool switch controlling what data to return
mgronlun@7215:                        (false == locals / true == expressions)
mgronlun@7215:  *
mgronlun@7215:  */
mgronlun@7215: StackValueCollection* interpretedVFrame::stack_data(bool expressions) const {
mgronlun@7215: 
aoqi@0:   InterpreterOopMap oop_mask;
mgronlun@7215:   // oopmap for current bci
aoqi@0:   if (TraceDeoptimization && Verbose) {
mgronlun@7215:     methodHandle m_h(Thread::current(), method());
aoqi@0:     OopMapCache::compute_one_oop_map(m_h, bci(), &oop_mask);
aoqi@0:   } else {
aoqi@0:     method()->mask_for(bci(), &oop_mask);
aoqi@0:   }
aoqi@0: 
mgronlun@7215:   const int mask_len = oop_mask.number_of_entries();
mgronlun@7215: 
mgronlun@7215:   // If the method is native, method()->max_locals() is not telling the truth.
mgronlun@7215:   // For our purposes, max locals instead equals the size of parameters.
mgronlun@7215:   const int max_locals = method()->is_native() ?
mgronlun@7215:     method()->size_of_parameters() : method()->max_locals();
mgronlun@7215: 
mgronlun@7215:   assert(mask_len >= max_locals, "invariant");
mgronlun@7215: 
mgronlun@7215:   const int length = expressions ? mask_len - max_locals : max_locals;
mgronlun@7215:   assert(length >= 0, "invariant");
mgronlun@7215: 
mgronlun@7215:   StackValueCollection* const result = new StackValueCollection(length);
mgronlun@7215: 
mgronlun@7215:   if (0 == length) {
mgronlun@7215:     return result;
aoqi@0:   }
mgronlun@7215: 
mgronlun@7215:   if (expressions) {
mgronlun@7215:     stack_expressions(result, length, max_locals, oop_mask, fr());
mgronlun@7215:   } else {
mgronlun@7215:     stack_locals(result, length, oop_mask, fr());
mgronlun@7215:   }
mgronlun@7215: 
mgronlun@7215:   assert(length == result->size(), "invariant");
mgronlun@7215: 
aoqi@0:   return result;
aoqi@0: }
aoqi@0: 
aoqi@0: void interpretedVFrame::set_locals(StackValueCollection* values) const {
aoqi@0:   if (values == NULL || values->size() == 0) return;
aoqi@0: 
mgronlun@7215:   // If the method is native, max_locals is not telling the truth.
mgronlun@7215:   // maxlocals then equals the size of parameters
mgronlun@7215:   const int max_locals = method()->is_native() ?
mgronlun@7215:     method()->size_of_parameters() : method()->max_locals();
aoqi@0: 
mgronlun@7215:   assert(max_locals == values->size(), "Mismatch between actual stack format and supplied data");
aoqi@0: 
aoqi@0:   // handle locals
mgronlun@7215:   for (int i = 0; i < max_locals; i++) {
aoqi@0:     // Find stack location
aoqi@0:     intptr_t *addr = locals_addr_at(i);
aoqi@0: 
aoqi@0:     // Depending on oop/int put it in the right package
mgronlun@7215:     const StackValue* const sv = values->at(i);
aoqi@0:     assert(sv != NULL, "sanity check");
aoqi@0:     if (sv->type() == T_OBJECT) {
aoqi@0:       *(oop *) addr = (sv->get_obj())();
aoqi@0:     } else {                   // integer
aoqi@0:       *addr = sv->get_int();
aoqi@0:     }
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: // ------------- cChunk --------------
aoqi@0: 
aoqi@0: entryVFrame::entryVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread)
aoqi@0: : externalVFrame(fr, reg_map, thread) {}
aoqi@0: 
aoqi@0: 
aoqi@0: void vframeStreamCommon::found_bad_method_frame() {
aoqi@0:   // 6379830 Cut point for an assertion that occasionally fires when
aoqi@0:   // we are using the performance analyzer.
aoqi@0:   // Disable this assert when testing the analyzer with fastdebug.
aoqi@0:   // -XX:SuppressErrorAt=vframe.cpp:XXX (XXX=following line number)
aoqi@0:   assert(false, "invalid bci or invalid scope desc");
aoqi@0: }
aoqi@0: 
aoqi@0: // top-frame will be skipped
aoqi@0: vframeStream::vframeStream(JavaThread* thread, frame top_frame,
aoqi@0:   bool stop_at_java_call_stub) : vframeStreamCommon(thread) {
aoqi@0:   _stop_at_java_call_stub = stop_at_java_call_stub;
aoqi@0: 
aoqi@0:   // skip top frame, as it may not be at safepoint
aoqi@0:   _frame  = top_frame.sender(&_reg_map);
aoqi@0:   while (!fill_from_frame()) {
aoqi@0:     _frame = _frame.sender(&_reg_map);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // Step back n frames, skip any pseudo frames in between.
aoqi@0: // This function is used in Class.forName, Class.newInstance, Method.Invoke,
aoqi@0: // AccessController.doPrivileged.
aoqi@0: void vframeStreamCommon::security_get_caller_frame(int depth) {
aoqi@0:   assert(depth >= 0, err_msg("invalid depth: %d", depth));
aoqi@0:   for (int n = 0; !at_end(); security_next()) {
aoqi@0:     if (!method()->is_ignored_by_security_stack_walk()) {
aoqi@0:       if (n == depth) {
aoqi@0:         // We have reached the desired depth; return.
aoqi@0:         return;
aoqi@0:       }
aoqi@0:       n++;  // this is a non-skipped frame; count it against the depth
aoqi@0:     }
aoqi@0:   }
aoqi@0:   // NOTE: At this point there were not enough frames on the stack
aoqi@0:   // to walk to depth.  Callers of this method have to check for at_end.
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void vframeStreamCommon::security_next() {
aoqi@0:   if (method()->is_prefixed_native()) {
aoqi@0:     skip_prefixed_method_and_wrappers();  // calls next()
aoqi@0:   } else {
aoqi@0:     next();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void vframeStreamCommon::skip_prefixed_method_and_wrappers() {
aoqi@0:   ResourceMark rm;
aoqi@0:   HandleMark hm;
aoqi@0: 
aoqi@0:   int    method_prefix_count = 0;
aoqi@0:   char** method_prefixes = JvmtiExport::get_all_native_method_prefixes(&method_prefix_count);
aoqi@0:   KlassHandle prefixed_klass(method()->method_holder());
aoqi@0:   const char* prefixed_name = method()->name()->as_C_string();
aoqi@0:   size_t prefixed_name_len = strlen(prefixed_name);
aoqi@0:   int prefix_index = method_prefix_count-1;
aoqi@0: 
aoqi@0:   while (!at_end()) {
aoqi@0:     next();
aoqi@0:     if (method()->method_holder() != prefixed_klass()) {
aoqi@0:       break; // classes don't match, can't be a wrapper
aoqi@0:     }
aoqi@0:     const char* name = method()->name()->as_C_string();
aoqi@0:     size_t name_len = strlen(name);
aoqi@0:     size_t prefix_len = prefixed_name_len - name_len;
aoqi@0:     if (prefix_len <= 0 || strcmp(name, prefixed_name + prefix_len) != 0) {
aoqi@0:       break; // prefixed name isn't prefixed version of method name, can't be a wrapper
aoqi@0:     }
aoqi@0:     for (; prefix_index >= 0; --prefix_index) {
aoqi@0:       const char* possible_prefix = method_prefixes[prefix_index];
aoqi@0:       size_t possible_prefix_len = strlen(possible_prefix);
aoqi@0:       if (possible_prefix_len == prefix_len &&
aoqi@0:           strncmp(possible_prefix, prefixed_name, prefix_len) == 0) {
aoqi@0:         break; // matching prefix found
aoqi@0:       }
aoqi@0:     }
aoqi@0:     if (prefix_index < 0) {
aoqi@0:       break; // didn't find the prefix, can't be a wrapper
aoqi@0:     }
aoqi@0:     prefixed_name = name;
aoqi@0:     prefixed_name_len = name_len;
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void vframeStreamCommon::skip_reflection_related_frames() {
aoqi@0:   while (!at_end() &&
aoqi@0:          (JDK_Version::is_gte_jdk14x_version() && UseNewReflection &&
aoqi@0:           (method()->method_holder()->is_subclass_of(SystemDictionary::reflect_MethodAccessorImpl_klass()) ||
aoqi@0:            method()->method_holder()->is_subclass_of(SystemDictionary::reflect_ConstructorAccessorImpl_klass())))) {
aoqi@0:     next();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: #ifndef PRODUCT
aoqi@0: void vframe::print() {
aoqi@0:   if (WizardMode) _fr.print_value_on(tty,NULL);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void vframe::print_value() const {
aoqi@0:   ((vframe*)this)->print();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void entryVFrame::print_value() const {
aoqi@0:   ((entryVFrame*)this)->print();
aoqi@0: }
aoqi@0: 
aoqi@0: void entryVFrame::print() {
aoqi@0:   vframe::print();
aoqi@0:   tty->print_cr("C Chunk inbetween Java");
aoqi@0:   tty->print_cr("C     link " INTPTR_FORMAT, _fr.link());
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // ------------- javaVFrame --------------
aoqi@0: 
aoqi@0: static void print_stack_values(const char* title, StackValueCollection* values) {
aoqi@0:   if (values->is_empty()) return;
aoqi@0:   tty->print_cr("\t%s:", title);
aoqi@0:   values->print();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void javaVFrame::print() {
aoqi@0:   ResourceMark rm;
aoqi@0:   vframe::print();
aoqi@0:   tty->print("\t");
aoqi@0:   method()->print_value();
aoqi@0:   tty->cr();
aoqi@0:   tty->print_cr("\tbci:    %d", bci());
aoqi@0: 
aoqi@0:   print_stack_values("locals",      locals());
aoqi@0:   print_stack_values("expressions", expressions());
aoqi@0: 
aoqi@0:   GrowableArray<MonitorInfo*>* list = monitors();
aoqi@0:   if (list->is_empty()) return;
aoqi@0:   tty->print_cr("\tmonitor list:");
aoqi@0:   for (int index = (list->length()-1); index >= 0; index--) {
aoqi@0:     MonitorInfo* monitor = list->at(index);
aoqi@0:     tty->print("\t  obj\t");
aoqi@0:     if (monitor->owner_is_scalar_replaced()) {
aoqi@0:       Klass* k = java_lang_Class::as_Klass(monitor->owner_klass());
aoqi@0:       tty->print("( is scalar replaced %s)", k->external_name());
aoqi@0:     } else if (monitor->owner() == NULL) {
aoqi@0:       tty->print("( null )");
aoqi@0:     } else {
aoqi@0:       monitor->owner()->print_value();
drchase@7605:       tty->print("(owner=" INTPTR_FORMAT ")", (address)monitor->owner());
aoqi@0:     }
drchase@7605:     if (monitor->eliminated()) {
drchase@7605:       if(is_compiled_frame()) {
drchase@7605:         tty->print(" ( lock is eliminated in compiled frame )");
drchase@7605:       } else {
drchase@7605:         tty->print(" ( lock is eliminated, frame not compiled )");
drchase@7605:       }
drchase@7605:     }
aoqi@0:     tty->cr();
aoqi@0:     tty->print("\t  ");
aoqi@0:     monitor->lock()->print_on(tty);
aoqi@0:     tty->cr();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void javaVFrame::print_value() const {
aoqi@0:   Method*    m = method();
aoqi@0:   InstanceKlass*     k = m->method_holder();
aoqi@0:   tty->print_cr("frame( sp=" INTPTR_FORMAT ", unextended_sp=" INTPTR_FORMAT ", fp=" INTPTR_FORMAT ", pc=" INTPTR_FORMAT ")",
aoqi@0:                 _fr.sp(),  _fr.unextended_sp(), _fr.fp(), _fr.pc());
aoqi@0:   tty->print("%s.%s", k->internal_name(), m->name()->as_C_string());
aoqi@0: 
aoqi@0:   if (!m->is_native()) {
aoqi@0:     Symbol*  source_name = k->source_file_name();
aoqi@0:     int        line_number = m->line_number_from_bci(bci());
aoqi@0:     if (source_name != NULL && (line_number != -1)) {
aoqi@0:       tty->print("(%s:%d)", source_name->as_C_string(), line_number);
aoqi@0:     }
aoqi@0:   } else {
aoqi@0:     tty->print("(Native Method)");
aoqi@0:   }
aoqi@0:   // Check frame size and print warning if it looks suspiciously large
aoqi@0:   if (fr().sp() != NULL) {
aoqi@0:     RegisterMap map = *register_map();
aoqi@0:     uint size = fr().frame_size(&map);
aoqi@0: #ifdef _LP64
aoqi@0:     if (size > 8*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size);
aoqi@0: #else
aoqi@0:     if (size > 4*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size);
aoqi@0: #endif
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: bool javaVFrame::structural_compare(javaVFrame* other) {
aoqi@0:   // Check static part
aoqi@0:   if (method() != other->method()) return false;
aoqi@0:   if (bci()    != other->bci())    return false;
aoqi@0: 
aoqi@0:   // Check locals
aoqi@0:   StackValueCollection *locs = locals();
aoqi@0:   StackValueCollection *other_locs = other->locals();
aoqi@0:   assert(locs->size() == other_locs->size(), "sanity check");
aoqi@0:   int i;
aoqi@0:   for(i = 0; i < locs->size(); i++) {
aoqi@0:     // it might happen the compiler reports a conflict and
aoqi@0:     // the interpreter reports a bogus int.
aoqi@0:     if (       is_compiled_frame() &&       locs->at(i)->type() == T_CONFLICT) continue;
aoqi@0:     if (other->is_compiled_frame() && other_locs->at(i)->type() == T_CONFLICT) continue;
aoqi@0: 
aoqi@0:     if (!locs->at(i)->equal(other_locs->at(i)))
aoqi@0:       return false;
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Check expressions
aoqi@0:   StackValueCollection* exprs = expressions();
aoqi@0:   StackValueCollection* other_exprs = other->expressions();
aoqi@0:   assert(exprs->size() == other_exprs->size(), "sanity check");
aoqi@0:   for(i = 0; i < exprs->size(); i++) {
aoqi@0:     if (!exprs->at(i)->equal(other_exprs->at(i)))
aoqi@0:       return false;
aoqi@0:   }
aoqi@0: 
aoqi@0:   return true;
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void javaVFrame::print_activation(int index) const {
aoqi@0:   // frame number and method
aoqi@0:   tty->print("%2d - ", index);
aoqi@0:   ((vframe*)this)->print_value();
aoqi@0:   tty->cr();
aoqi@0: 
aoqi@0:   if (WizardMode) {
aoqi@0:     ((vframe*)this)->print();
aoqi@0:     tty->cr();
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void javaVFrame::verify() const {
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void interpretedVFrame::verify() const {
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: // ------------- externalVFrame --------------
aoqi@0: 
aoqi@0: void externalVFrame::print() {
aoqi@0:   _fr.print_value_on(tty,NULL);
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: void externalVFrame::print_value() const {
aoqi@0:   ((vframe*)this)->print();
aoqi@0: }
aoqi@0: #endif // PRODUCT