Mercurial > hg > graal-compiler
diff src/share/vm/runtime/vframe.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | d3cd40645d0d |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/runtime/vframe.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,636 @@ +/* + * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +# include "incls/_precompiled.incl" +# include "incls/_vframe.cpp.incl" + +vframe::vframe(const frame* fr, const RegisterMap* reg_map, JavaThread* thread) +: _reg_map(reg_map), _thread(thread) { + assert(fr != NULL, "must have frame"); + _fr = *fr; +} + +vframe::vframe(const frame* fr, JavaThread* thread) +: _reg_map(thread), _thread(thread) { + assert(fr != NULL, "must have frame"); + _fr = *fr; +} + +vframe* vframe::new_vframe(const frame* f, const RegisterMap* reg_map, JavaThread* thread) { + // Interpreter frame + if (f->is_interpreted_frame()) { + return new interpretedVFrame(f, reg_map, thread); + } + + // Compiled frame + CodeBlob* cb = f->cb(); + if (cb != NULL) { + if (cb->is_nmethod()) { + nmethod* nm = (nmethod*)cb; + return new compiledVFrame(f, reg_map, thread, nm); + } + + if (f->is_runtime_frame()) { + // Skip this frame and try again. + RegisterMap temp_map = *reg_map; + frame s = f->sender(&temp_map); + return new_vframe(&s, &temp_map, thread); + } + } + + // External frame + return new externalVFrame(f, reg_map, thread); +} + +vframe* vframe::sender() const { + RegisterMap temp_map = *register_map(); + assert(is_top(), "just checking"); + if (_fr.is_entry_frame() && _fr.is_first_frame()) return NULL; + frame s = _fr.real_sender(&temp_map); + if (s.is_first_frame()) return NULL; + return vframe::new_vframe(&s, &temp_map, thread()); +} + +vframe* vframe::top() const { + vframe* vf = (vframe*) this; + while (!vf->is_top()) vf = vf->sender(); + return vf; +} + + +javaVFrame* vframe::java_sender() const { + vframe* f = sender(); + while (f != NULL) { + if (f->is_java_frame()) return javaVFrame::cast(f); + f = f->sender(); + } + return NULL; +} + +// ------------- javaVFrame -------------- + +GrowableArray<MonitorInfo*>* javaVFrame::locked_monitors() { + assert(SafepointSynchronize::is_at_safepoint() || JavaThread::current() == thread(), + "must be at safepoint or it's a java frame of the current thread"); + + GrowableArray<MonitorInfo*>* mons = monitors(); + GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(mons->length()); + if (mons->is_empty()) return result; + + bool found_first_monitor = false; + ObjectMonitor *pending_monitor = thread()->current_pending_monitor(); + ObjectMonitor *waiting_monitor = thread()->current_waiting_monitor(); + oop pending_obj = (pending_monitor != NULL ? (oop) pending_monitor->object() : NULL); + oop waiting_obj = (waiting_monitor != NULL ? (oop) waiting_monitor->object() : NULL); + + for (int index = (mons->length()-1); index >= 0; index--) { + MonitorInfo* monitor = mons->at(index); + oop obj = monitor->owner(); + if (obj == NULL) continue; // skip unowned monitor + // + // Skip the monitor that the thread is blocked to enter or waiting on + // + if (!found_first_monitor && (obj == pending_obj || obj == waiting_obj)) { + continue; + } + found_first_monitor = true; + result->append(monitor); + } + return result; +} + +static void print_locked_object_class_name(outputStream* st, Handle obj, const char* lock_state) { + if (obj.not_null()) { + st->print("\t- %s <" INTPTR_FORMAT "> ", lock_state, (address)obj()); + if (obj->klass() == SystemDictionary::class_klass()) { + klassOop target_klass = java_lang_Class::as_klassOop(obj()); + st->print_cr("(a java.lang.Class for %s)", instanceKlass::cast(target_klass)->external_name()); + } else { + Klass* k = Klass::cast(obj->klass()); + st->print_cr("(a %s)", k->external_name()); + } + } +} + +void javaVFrame::print_lock_info_on(outputStream* st, int frame_count) { + ResourceMark rm; + + // If this is the first frame, and java.lang.Object.wait(...) then print out the receiver. + if (frame_count == 0) { + if (method()->name() == vmSymbols::wait_name() && + instanceKlass::cast(method()->method_holder())->name() == vmSymbols::java_lang_Object()) { + StackValueCollection* locs = locals(); + if (!locs->is_empty()) { + StackValue* sv = locs->at(0); + if (sv->type() == T_OBJECT) { + Handle o = locs->at(0)->get_obj(); + print_locked_object_class_name(st, o, "waiting on"); + } + } + } else if (thread()->current_park_blocker() != NULL) { + oop obj = thread()->current_park_blocker(); + Klass* k = Klass::cast(obj->klass()); + st->print_cr("\t- %s <" INTPTR_FORMAT "> (a %s)", "parking to wait for ", (address)obj, k->external_name()); + } + } + + + // Print out all monitors that we have locked or are trying to lock + GrowableArray<MonitorInfo*>* mons = monitors(); + if (!mons->is_empty()) { + bool found_first_monitor = false; + for (int index = (mons->length()-1); index >= 0; index--) { + MonitorInfo* monitor = mons->at(index); + if (monitor->owner() != NULL) { + + // First, assume we have the monitor locked. If we haven't found an + // owned monitor before and this is the first frame, then we need to + // see if we have completed the lock or we are blocked trying to + // acquire it - we can only be blocked if the monitor is inflated + + const char *lock_state = "locked"; // assume we have the monitor locked + if (!found_first_monitor && frame_count == 0) { + markOop mark = monitor->owner()->mark(); + if (mark->has_monitor() && + mark->monitor() == thread()->current_pending_monitor()) { + lock_state = "waiting to lock"; + } + } + + found_first_monitor = true; + print_locked_object_class_name(st, monitor->owner(), lock_state); + } + } + } +} + +// ------------- interpretedVFrame -------------- + +u_char* interpretedVFrame::bcp() const { + return fr().interpreter_frame_bcp(); +} + +void interpretedVFrame::set_bcp(u_char* bcp) { + fr().interpreter_frame_set_bcp(bcp); +} + +intptr_t* interpretedVFrame::locals_addr_at(int offset) const { + assert(fr().is_interpreted_frame(), "frame should be an interpreted frame"); + return fr().interpreter_frame_local_at(offset); +} + + +GrowableArray<MonitorInfo*>* interpretedVFrame::monitors() const { + GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(5); + for (BasicObjectLock* current = (fr().previous_monitor_in_interpreter_frame(fr().interpreter_frame_monitor_begin())); + current >= fr().interpreter_frame_monitor_end(); + current = fr().previous_monitor_in_interpreter_frame(current)) { + result->push(new MonitorInfo(current->obj(), current->lock())); + } + return result; +} + +int interpretedVFrame::bci() const { + return method()->bci_from(bcp()); +} + +methodOop interpretedVFrame::method() const { + return fr().interpreter_frame_method(); +} + +StackValueCollection* interpretedVFrame::locals() const { + int length = method()->max_locals(); + + if (method()->is_native()) { + // If the method is native, max_locals is not telling the truth. + // maxlocals then equals the size of parameters + length = method()->size_of_parameters(); + } + + StackValueCollection* result = new StackValueCollection(length); + + // Get oopmap describing oops and int for current bci + if (TaggedStackInterpreter) { + for(int i=0; i < length; i++) { + // Find stack location + intptr_t *addr = locals_addr_at(i); + + // Depending on oop/int put it in the right package + StackValue *sv; + frame::Tag tag = fr().interpreter_frame_local_tag(i); + if (tag == frame::TagReference) { + // oop value + Handle h(*(oop *)addr); + sv = new StackValue(h); + } else { + // integer + sv = new StackValue(*addr); + } + assert(sv != NULL, "sanity check"); + result->add(sv); + } + } else { + InterpreterOopMap oop_mask; + if (TraceDeoptimization && Verbose) { + methodHandle m_h(thread(), method()); + OopMapCache::compute_one_oop_map(m_h, bci(), &oop_mask); + } else { + method()->mask_for(bci(), &oop_mask); + } + // handle locals + for(int i=0; i < length; i++) { + // Find stack location + intptr_t *addr = locals_addr_at(i); + + // Depending on oop/int put it in the right package + StackValue *sv; + if (oop_mask.is_oop(i)) { + // oop value + Handle h(*(oop *)addr); + sv = new StackValue(h); + } else { + // integer + sv = new StackValue(*addr); + } + assert(sv != NULL, "sanity check"); + result->add(sv); + } + } + return result; +} + +void interpretedVFrame::set_locals(StackValueCollection* values) const { + if (values == NULL || values->size() == 0) return; + + int length = method()->max_locals(); + if (method()->is_native()) { + // If the method is native, max_locals is not telling the truth. + // maxlocals then equals the size of parameters + length = method()->size_of_parameters(); + } + + assert(length == values->size(), "Mismatch between actual stack format and supplied data"); + + // handle locals + for (int i = 0; i < length; i++) { + // Find stack location + intptr_t *addr = locals_addr_at(i); + + // Depending on oop/int put it in the right package + StackValue *sv = values->at(i); + assert(sv != NULL, "sanity check"); + if (sv->type() == T_OBJECT) { + *(oop *) addr = (sv->get_obj())(); + } else { // integer + *addr = sv->get_int(); + } + } +} + +StackValueCollection* interpretedVFrame::expressions() const { + int length = fr().interpreter_frame_expression_stack_size(); + if (method()->is_native()) { + // If the method is native, there is no expression stack + length = 0; + } + + int nof_locals = method()->max_locals(); + StackValueCollection* result = new StackValueCollection(length); + + if (TaggedStackInterpreter) { + // handle expressions + for(int i=0; i < length; i++) { + // Find stack location + intptr_t *addr = fr().interpreter_frame_expression_stack_at(i); + frame::Tag tag = fr().interpreter_frame_expression_stack_tag(i); + + // Depending on oop/int put it in the right package + StackValue *sv; + if (tag == frame::TagReference) { + // oop value + Handle h(*(oop *)addr); + sv = new StackValue(h); + } else { + // otherwise + sv = new StackValue(*addr); + } + assert(sv != NULL, "sanity check"); + result->add(sv); + } + } else { + InterpreterOopMap oop_mask; + // Get oopmap describing oops and int for current bci + if (TraceDeoptimization && Verbose) { + methodHandle m_h(method()); + OopMapCache::compute_one_oop_map(m_h, bci(), &oop_mask); + } else { + method()->mask_for(bci(), &oop_mask); + } + // handle expressions + for(int i=0; i < length; i++) { + // Find stack location + intptr_t *addr = fr().interpreter_frame_expression_stack_at(i); + + // Depending on oop/int put it in the right package + StackValue *sv; + if (oop_mask.is_oop(i + nof_locals)) { + // oop value + Handle h(*(oop *)addr); + sv = new StackValue(h); + } else { + // integer + sv = new StackValue(*addr); + } + assert(sv != NULL, "sanity check"); + result->add(sv); + } + } + return result; +} + + +// ------------- cChunk -------------- + +entryVFrame::entryVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread) +: externalVFrame(fr, reg_map, thread) {} + + +void vframeStreamCommon::found_bad_method_frame() { + // 6379830 Cut point for an assertion that occasionally fires when + // we are using the performance analyzer. + // Disable this assert when testing the analyzer with fastdebug. + // -XX:SuppressErrorAt=vframe.cpp:XXX (XXX=following line number) + assert(false, "invalid bci or invalid scope desc"); +} + +// top-frame will be skipped +vframeStream::vframeStream(JavaThread* thread, frame top_frame, + bool stop_at_java_call_stub) : vframeStreamCommon(thread) { + _stop_at_java_call_stub = stop_at_java_call_stub; + + // skip top frame, as it may not be at safepoint + _frame = top_frame.sender(&_reg_map); + while (!fill_from_frame()) { + _frame = _frame.sender(&_reg_map); + } +} + + +// Step back n frames, skip any pseudo frames in between. +// This function is used in Class.forName, Class.newInstance, Method.Invoke, +// AccessController.doPrivileged. +// +// NOTE that in JDK 1.4 this has been exposed to Java as +// sun.reflect.Reflection.getCallerClass(), which can be inlined. +// Inlined versions must match this routine's logic. +// Native method prefixing logic does not need to match since +// the method names don't match and inlining will not occur. +// See, for example, +// Parse::inline_native_Reflection_getCallerClass in +// opto/library_call.cpp. +void vframeStreamCommon::security_get_caller_frame(int depth) { + bool use_new_reflection = JDK_Version::is_gte_jdk14x_version() && UseNewReflection; + + while (!at_end()) { + if (Universe::reflect_invoke_cache()->is_same_method(method())) { + // This is Method.invoke() -- skip it + } else if (use_new_reflection && + Klass::cast(method()->method_holder()) + ->is_subclass_of(SystemDictionary::reflect_method_accessor_klass())) { + // This is an auxilary frame -- skip it + } else { + // This is non-excluded frame, we need to count it against the depth + if (depth-- <= 0) { + // we have reached the desired depth, we are done + break; + } + } + if (method()->is_prefixed_native()) { + skip_prefixed_method_and_wrappers(); + } else { + next(); + } + } +} + + +void vframeStreamCommon::skip_prefixed_method_and_wrappers() { + ResourceMark rm; + HandleMark hm; + + int method_prefix_count = 0; + char** method_prefixes = JvmtiExport::get_all_native_method_prefixes(&method_prefix_count); + KlassHandle prefixed_klass(method()->method_holder()); + const char* prefixed_name = method()->name()->as_C_string(); + size_t prefixed_name_len = strlen(prefixed_name); + int prefix_index = method_prefix_count-1; + + while (!at_end()) { + next(); + if (method()->method_holder() != prefixed_klass()) { + break; // classes don't match, can't be a wrapper + } + const char* name = method()->name()->as_C_string(); + size_t name_len = strlen(name); + size_t prefix_len = prefixed_name_len - name_len; + if (prefix_len <= 0 || strcmp(name, prefixed_name + prefix_len) != 0) { + break; // prefixed name isn't prefixed version of method name, can't be a wrapper + } + for (; prefix_index >= 0; --prefix_index) { + const char* possible_prefix = method_prefixes[prefix_index]; + size_t possible_prefix_len = strlen(possible_prefix); + if (possible_prefix_len == prefix_len && + strncmp(possible_prefix, prefixed_name, prefix_len) == 0) { + break; // matching prefix found + } + } + if (prefix_index < 0) { + break; // didn't find the prefix, can't be a wrapper + } + prefixed_name = name; + prefixed_name_len = name_len; + } +} + + +void vframeStreamCommon::skip_reflection_related_frames() { + while (!at_end() && + (JDK_Version::is_gte_jdk14x_version() && UseNewReflection && + (Klass::cast(method()->method_holder())->is_subclass_of(SystemDictionary::reflect_method_accessor_klass()) || + Klass::cast(method()->method_holder())->is_subclass_of(SystemDictionary::reflect_constructor_accessor_klass())))) { + next(); + } +} + + +#ifndef PRODUCT +void vframe::print() { + if (WizardMode) _fr.print_value_on(tty,NULL); +} + + +void vframe::print_value() const { + ((vframe*)this)->print(); +} + + +void entryVFrame::print_value() const { + ((entryVFrame*)this)->print(); +} + +void entryVFrame::print() { + vframe::print(); + tty->print_cr("C Chunk inbetween Java"); + tty->print_cr("C link " INTPTR_FORMAT, _fr.link()); +} + + +// ------------- javaVFrame -------------- + +static void print_stack_values(const char* title, StackValueCollection* values) { + if (values->is_empty()) return; + tty->print_cr("\t%s:", title); + values->print(); +} + + +void javaVFrame::print() { + ResourceMark rm; + vframe::print(); + tty->print("\t"); + method()->print_value(); + tty->cr(); + tty->print_cr("\tbci: %d", bci()); + + print_stack_values("locals", locals()); + print_stack_values("expressions", expressions()); + + GrowableArray<MonitorInfo*>* list = monitors(); + if (list->is_empty()) return; + tty->print_cr("\tmonitor list:"); + for (int index = (list->length()-1); index >= 0; index--) { + MonitorInfo* monitor = list->at(index); + tty->print("\t obj\t"); monitor->owner()->print_value(); + tty->print("(" INTPTR_FORMAT ")", (address)monitor->owner()); + tty->cr(); + tty->print("\t "); + monitor->lock()->print_on(tty); + tty->cr(); + } +} + + +void javaVFrame::print_value() const { + methodOop m = method(); + klassOop k = m->method_holder(); + tty->print_cr("frame( sp=" INTPTR_FORMAT ", unextended_sp=" INTPTR_FORMAT ", fp=" INTPTR_FORMAT ", pc=" INTPTR_FORMAT ")", + _fr.sp(), _fr.unextended_sp(), _fr.fp(), _fr.pc()); + tty->print("%s.%s", Klass::cast(k)->internal_name(), m->name()->as_C_string()); + + if (!m->is_native()) { + symbolOop source_name = instanceKlass::cast(k)->source_file_name(); + int line_number = m->line_number_from_bci(bci()); + if (source_name != NULL && (line_number != -1)) { + tty->print("(%s:%d)", source_name->as_C_string(), line_number); + } + } else { + tty->print("(Native Method)"); + } + // Check frame size and print warning if it looks suspiciously large + if (fr().sp() != NULL) { + uint size = fr().frame_size(); +#ifdef _LP64 + if (size > 8*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size); +#else + if (size > 4*K) warning("SUSPICIOUSLY LARGE FRAME (%d)", size); +#endif + } +} + + +bool javaVFrame::structural_compare(javaVFrame* other) { + // Check static part + if (method() != other->method()) return false; + if (bci() != other->bci()) return false; + + // Check locals + StackValueCollection *locs = locals(); + StackValueCollection *other_locs = other->locals(); + assert(locs->size() == other_locs->size(), "sanity check"); + int i; + for(i = 0; i < locs->size(); i++) { + // it might happen the compiler reports a conflict and + // the interpreter reports a bogus int. + if ( is_compiled_frame() && locs->at(i)->type() == T_CONFLICT) continue; + if (other->is_compiled_frame() && other_locs->at(i)->type() == T_CONFLICT) continue; + + if (!locs->at(i)->equal(other_locs->at(i))) + return false; + } + + // Check expressions + StackValueCollection* exprs = expressions(); + StackValueCollection* other_exprs = other->expressions(); + assert(exprs->size() == other_exprs->size(), "sanity check"); + for(i = 0; i < exprs->size(); i++) { + if (!exprs->at(i)->equal(other_exprs->at(i))) + return false; + } + + return true; +} + + +void javaVFrame::print_activation(int index) const { + // frame number and method + tty->print("%2d - ", index); + ((vframe*)this)->print_value(); + tty->cr(); + + if (WizardMode) { + ((vframe*)this)->print(); + tty->cr(); + } +} + + +void javaVFrame::verify() const { +} + + +void interpretedVFrame::verify() const { +} + + +// ------------- externalVFrame -------------- + +void externalVFrame::print() { + _fr.print_value_on(tty,NULL); +} + + +void externalVFrame::print_value() const { + ((vframe*)this)->print(); +} +#endif // PRODUCT