--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/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