| /* |
| * 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/_javaClasses.cpp.incl" |
| |
| // Helpful routine for computing field offsets at run time rather than hardcoding them |
| static void |
| compute_offset(int &dest_offset, |
| klassOop klass_oop, symbolOop name_symbol, symbolOop signature_symbol) { |
| fieldDescriptor fd; |
| instanceKlass* ik = instanceKlass::cast(klass_oop); |
| if (!ik->find_local_field(name_symbol, signature_symbol, &fd)) { |
| ResourceMark rm; |
| tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string()); |
| fatal("Invalid layout of preloaded class"); |
| } |
| dest_offset = fd.offset(); |
| } |
| |
| // Same as above but for "optional" offsets that might not be present in certain JDK versions |
| static void |
| compute_optional_offset(int& dest_offset, |
| klassOop klass_oop, symbolOop name_symbol, symbolOop signature_symbol) { |
| fieldDescriptor fd; |
| instanceKlass* ik = instanceKlass::cast(klass_oop); |
| if (ik->find_local_field(name_symbol, signature_symbol, &fd)) { |
| dest_offset = fd.offset(); |
| } |
| } |
| |
| Handle java_lang_String::basic_create(int length, bool tenured, TRAPS) { |
| // Create the String object first, so there's a chance that the String |
| // and the char array it points to end up in the same cache line. |
| oop obj; |
| if (tenured) { |
| obj = instanceKlass::cast(SystemDictionary::string_klass())->allocate_permanent_instance(CHECK_NH); |
| } else { |
| obj = instanceKlass::cast(SystemDictionary::string_klass())->allocate_instance(CHECK_NH); |
| } |
| |
| // Create the char array. The String object must be handlized here |
| // because GC can happen as a result of the allocation attempt. |
| Handle h_obj(THREAD, obj); |
| typeArrayOop buffer; |
| if (tenured) { |
| buffer = oopFactory::new_permanent_charArray(length, CHECK_NH); |
| } else { |
| buffer = oopFactory::new_charArray(length, CHECK_NH); |
| } |
| |
| // Point the String at the char array |
| obj = h_obj(); |
| set_value(obj, buffer); |
| // No need to zero the offset, allocation zero'ed the entire String object |
| assert(offset(obj) == 0, "initial String offset should be zero"); |
| //set_offset(obj, 0); |
| set_count(obj, length); |
| |
| return h_obj; |
| } |
| |
| Handle java_lang_String::basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS) { |
| Handle h_obj = basic_create(length, tenured, CHECK_NH); |
| typeArrayOop buffer = value(h_obj()); |
| for (int index = 0; index < length; index++) { |
| buffer->char_at_put(index, unicode[index]); |
| } |
| return h_obj; |
| } |
| |
| Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) { |
| return basic_create_from_unicode(unicode, length, false, CHECK_NH); |
| } |
| |
| Handle java_lang_String::create_tenured_from_unicode(jchar* unicode, int length, TRAPS) { |
| return basic_create_from_unicode(unicode, length, true, CHECK_NH); |
| } |
| |
| oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) { |
| Handle h_obj = basic_create_from_unicode(unicode, length, false, CHECK_0); |
| return h_obj(); |
| } |
| |
| Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) { |
| if (utf8_str == NULL) { |
| return Handle(); |
| } |
| int length = UTF8::unicode_length(utf8_str); |
| Handle h_obj = basic_create(length, false, CHECK_NH); |
| if (length > 0) { |
| UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length); |
| } |
| return h_obj; |
| } |
| |
| oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) { |
| Handle h_obj = create_from_str(utf8_str, CHECK_0); |
| return h_obj(); |
| } |
| |
| Handle java_lang_String::create_from_symbol(symbolHandle symbol, TRAPS) { |
| int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length()); |
| Handle h_obj = basic_create(length, false, CHECK_NH); |
| if (length > 0) { |
| UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length); |
| } |
| return h_obj; |
| } |
| |
| // Converts a C string to a Java String based on current encoding |
| Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) { |
| assert(str != NULL, "bad arguments"); |
| |
| typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *); |
| static to_java_string_fn_t _to_java_string_fn = NULL; |
| |
| if (_to_java_string_fn == NULL) { |
| void *lib_handle = os::native_java_library(); |
| _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, hpi::dll_lookup(lib_handle, "NewStringPlatform")); |
| if (_to_java_string_fn == NULL) { |
| fatal("NewStringPlatform missing"); |
| } |
| } |
| |
| jstring js = NULL; |
| { JavaThread* thread = (JavaThread*)THREAD; |
| assert(thread->is_Java_thread(), "must be java thread"); |
| HandleMark hm(thread); |
| ThreadToNativeFromVM ttn(thread); |
| js = (_to_java_string_fn)(thread->jni_environment(), str); |
| } |
| return Handle(THREAD, JNIHandles::resolve(js)); |
| } |
| |
| // Converts a Java String to a native C string that can be used for |
| // native OS calls. |
| char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) { |
| |
| typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*); |
| static to_platform_string_fn_t _to_platform_string_fn = NULL; |
| |
| if (_to_platform_string_fn == NULL) { |
| void *lib_handle = os::native_java_library(); |
| _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, hpi::dll_lookup(lib_handle, "GetStringPlatformChars")); |
| if (_to_platform_string_fn == NULL) { |
| fatal("GetStringPlatformChars missing"); |
| } |
| } |
| |
| char *native_platform_string; |
| { JavaThread* thread = (JavaThread*)THREAD; |
| assert(thread->is_Java_thread(), "must be java thread"); |
| JNIEnv *env = thread->jni_environment(); |
| jstring js = (jstring) JNIHandles::make_local(env, java_string()); |
| bool is_copy; |
| HandleMark hm(thread); |
| ThreadToNativeFromVM ttn(thread); |
| native_platform_string = (_to_platform_string_fn)(env, js, &is_copy); |
| assert(is_copy == JNI_TRUE, "is_copy value changed"); |
| JNIHandles::destroy_local(js); |
| } |
| return native_platform_string; |
| } |
| |
| Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) { |
| oop obj = java_string(); |
| // Typical usage is to convert all '/' to '.' in string. |
| typeArrayOop value = java_lang_String::value(obj); |
| int offset = java_lang_String::offset(obj); |
| int length = java_lang_String::length(obj); |
| |
| // First check if any from_char exist |
| int index; // Declared outside, used later |
| for (index = 0; index < length; index++) { |
| if (value->char_at(index + offset) == from_char) { |
| break; |
| } |
| } |
| if (index == length) { |
| // No from_char, so do not copy. |
| return java_string; |
| } |
| |
| // Create new UNICODE buffer. Must handlize value because GC |
| // may happen during String and char array creation. |
| typeArrayHandle h_value(THREAD, value); |
| Handle string = basic_create(length, false, CHECK_NH); |
| |
| typeArrayOop from_buffer = h_value(); |
| typeArrayOop to_buffer = java_lang_String::value(string()); |
| |
| // Copy contents |
| for (index = 0; index < length; index++) { |
| jchar c = from_buffer->char_at(index + offset); |
| if (c == from_char) { |
| c = to_char; |
| } |
| to_buffer->char_at_put(index, c); |
| } |
| return string; |
| } |
| |
| jchar* java_lang_String::as_unicode_string(oop java_string, int& length) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| length = java_lang_String::length(java_string); |
| |
| jchar* result = NEW_RESOURCE_ARRAY(jchar, length); |
| for (int index = 0; index < length; index++) { |
| result[index] = value->char_at(index + offset); |
| } |
| return result; |
| } |
| |
| symbolHandle java_lang_String::as_symbol(Handle java_string, TRAPS) { |
| oop obj = java_string(); |
| typeArrayOop value = java_lang_String::value(obj); |
| int offset = java_lang_String::offset(obj); |
| int length = java_lang_String::length(obj); |
| |
| ResourceMark rm(THREAD); |
| symbolHandle result; |
| |
| if (length > 0) { |
| int utf8_length = UNICODE::utf8_length(value->char_at_addr(offset), length); |
| char* chars = NEW_RESOURCE_ARRAY(char, utf8_length + 1); |
| UNICODE::convert_to_utf8(value->char_at_addr(offset), length, chars); |
| // Allocate the symbol |
| result = oopFactory::new_symbol_handle(chars, utf8_length, CHECK_(symbolHandle())); |
| } else { |
| result = oopFactory::new_symbol_handle("", 0, CHECK_(symbolHandle())); |
| } |
| return result; |
| } |
| |
| int java_lang_String::utf8_length(oop java_string) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| int length = java_lang_String::length(java_string); |
| jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); |
| return UNICODE::utf8_length(position, length); |
| } |
| |
| char* java_lang_String::as_utf8_string(oop java_string) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| int length = java_lang_String::length(java_string); |
| jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); |
| return UNICODE::as_utf8(position, length); |
| } |
| |
| char* java_lang_String::as_utf8_string(oop java_string, int start, int len) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| int length = java_lang_String::length(java_string); |
| assert(start + len <= length, "just checking"); |
| jchar* position = value->char_at_addr(offset + start); |
| return UNICODE::as_utf8(position, len); |
| } |
| |
| bool java_lang_String::equals(oop java_string, jchar* chars, int len) { |
| assert(SharedSkipVerify || |
| java_string->klass() == SystemDictionary::string_klass(), |
| "must be java_string"); |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| int length = java_lang_String::length(java_string); |
| if (length != len) { |
| return false; |
| } |
| for (int i = 0; i < len; i++) { |
| if (value->char_at(i + offset) != chars[i]) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| void java_lang_String::print(Handle java_string, outputStream* st) { |
| oop obj = java_string(); |
| assert(obj->klass() == SystemDictionary::string_klass(), "must be java_string"); |
| typeArrayOop value = java_lang_String::value(obj); |
| int offset = java_lang_String::offset(obj); |
| int length = java_lang_String::length(obj); |
| |
| int end = MIN2(length, 100); |
| if (value == NULL) { |
| // This can happen if, e.g., printing a String |
| // object before its initializer has been called |
| st->print_cr("NULL"); |
| } else { |
| st->print("\""); |
| for (int index = 0; index < length; index++) { |
| st->print("%c", value->char_at(index + offset)); |
| } |
| st->print("\""); |
| } |
| } |
| |
| |
| oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) { |
| assert(k->java_mirror() == NULL, "should only assign mirror once"); |
| // Use this moment of initialization to cache modifier_flags also, |
| // to support Class.getModifiers(). Instance classes recalculate |
| // the cached flags after the class file is parsed, but before the |
| // class is put into the system dictionary. |
| int computed_modifiers = k->compute_modifier_flags(CHECK_0); |
| k->set_modifier_flags(computed_modifiers); |
| if (SystemDictionary::class_klass_loaded()) { |
| // Allocate mirror (java.lang.Class instance) |
| Handle mirror = instanceKlass::cast(SystemDictionary::class_klass())->allocate_permanent_instance(CHECK_0); |
| // Setup indirections |
| mirror->obj_field_put(klass_offset, k()); |
| k->set_java_mirror(mirror()); |
| // It might also have a component mirror. This mirror must already exist. |
| if (k->oop_is_javaArray()) { |
| Handle comp_mirror; |
| if (k->oop_is_typeArray()) { |
| BasicType type = typeArrayKlass::cast(k->as_klassOop())->element_type(); |
| comp_mirror = Universe::java_mirror(type); |
| assert(comp_mirror.not_null(), "must have primitive mirror"); |
| } else if (k->oop_is_objArray()) { |
| klassOop element_klass = objArrayKlass::cast(k->as_klassOop())->element_klass(); |
| if (element_klass != NULL |
| && (Klass::cast(element_klass)->oop_is_instance() || |
| Klass::cast(element_klass)->oop_is_javaArray())) { |
| comp_mirror = Klass::cast(element_klass)->java_mirror(); |
| assert(comp_mirror.not_null(), "must have element mirror"); |
| } |
| // else some object array internal to the VM, like systemObjArrayKlassObj |
| } |
| if (comp_mirror.not_null()) { |
| // Two-way link between the array klass and its component mirror: |
| arrayKlass::cast(k->as_klassOop())->set_component_mirror(comp_mirror()); |
| set_array_klass(comp_mirror(), k->as_klassOop()); |
| } |
| } |
| return mirror(); |
| } else { |
| return NULL; |
| } |
| } |
| |
| |
| oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) { |
| // This should be improved by adding a field at the Java level or by |
| // introducing a new VM klass (see comment in ClassFileParser) |
| oop java_class = instanceKlass::cast(SystemDictionary::class_klass())->allocate_permanent_instance(CHECK_0); |
| if (type != T_VOID) { |
| klassOop aklass = Universe::typeArrayKlassObj(type); |
| assert(aklass != NULL, "correct bootstrap"); |
| set_array_klass(java_class, aklass); |
| } |
| return java_class; |
| } |
| |
| |
| klassOop java_lang_Class::as_klassOop(oop java_class) { |
| //%note memory_2 |
| klassOop k = klassOop(java_class->obj_field(klass_offset)); |
| assert(k == NULL || k->is_klass(), "type check"); |
| return k; |
| } |
| |
| |
| klassOop java_lang_Class::array_klass(oop java_class) { |
| klassOop k = klassOop(java_class->obj_field(array_klass_offset)); |
| assert(k == NULL || k->is_klass() && Klass::cast(k)->oop_is_javaArray(), "should be array klass"); |
| return k; |
| } |
| |
| |
| void java_lang_Class::set_array_klass(oop java_class, klassOop klass) { |
| assert(klass->is_klass() && Klass::cast(klass)->oop_is_javaArray(), "should be array klass"); |
| java_class->obj_field_put(array_klass_offset, klass); |
| } |
| |
| |
| methodOop java_lang_Class::resolved_constructor(oop java_class) { |
| oop constructor = java_class->obj_field(resolved_constructor_offset); |
| assert(constructor == NULL || constructor->is_method(), "should be method"); |
| return methodOop(constructor); |
| } |
| |
| |
| void java_lang_Class::set_resolved_constructor(oop java_class, methodOop constructor) { |
| assert(constructor->is_method(), "should be method"); |
| java_class->obj_field_put(resolved_constructor_offset, constructor); |
| } |
| |
| |
| bool java_lang_Class::is_primitive(oop java_class) { |
| klassOop k = klassOop(java_class->obj_field(klass_offset)); |
| return k == NULL; |
| } |
| |
| |
| BasicType java_lang_Class::primitive_type(oop java_class) { |
| assert(java_lang_Class::is_primitive(java_class), "just checking"); |
| klassOop ak = klassOop(java_class->obj_field(array_klass_offset)); |
| BasicType type = T_VOID; |
| if (ak != NULL) { |
| // Note: create_basic_type_mirror above initializes ak to a non-null value. |
| type = arrayKlass::cast(ak)->element_type(); |
| } else { |
| assert(java_class == Universe::void_mirror(), "only valid non-array primitive"); |
| } |
| assert(Universe::java_mirror(type) == java_class, "must be consistent"); |
| return type; |
| } |
| |
| |
| oop java_lang_Class::primitive_mirror(BasicType t) { |
| oop mirror = Universe::java_mirror(t); |
| assert(mirror != NULL && mirror->is_a(SystemDictionary::class_klass()), "must be a Class"); |
| assert(java_lang_Class::is_primitive(mirror), "must be primitive"); |
| return mirror; |
| } |
| |
| bool java_lang_Class::offsets_computed = false; |
| int java_lang_Class::classRedefinedCount_offset = -1; |
| |
| void java_lang_Class::compute_offsets() { |
| assert(!offsets_computed, "offsets should be initialized only once"); |
| offsets_computed = true; |
| |
| klassOop k = SystemDictionary::class_klass(); |
| // The classRedefinedCount field is only present starting in 1.5, |
| // so don't go fatal. |
| compute_optional_offset(classRedefinedCount_offset, |
| k, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature()); |
| } |
| |
| int java_lang_Class::classRedefinedCount(oop the_class_mirror) { |
| if (!JDK_Version::is_gte_jdk15x_version() |
| || classRedefinedCount_offset == -1) { |
| // The classRedefinedCount field is only present starting in 1.5. |
| // If we don't have an offset for it then just return -1 as a marker. |
| return -1; |
| } |
| |
| return the_class_mirror->int_field(classRedefinedCount_offset); |
| } |
| |
| void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) { |
| if (!JDK_Version::is_gte_jdk15x_version() |
| || classRedefinedCount_offset == -1) { |
| // The classRedefinedCount field is only present starting in 1.5. |
| // If we don't have an offset for it then nothing to set. |
| return; |
| } |
| |
| the_class_mirror->int_field_put(classRedefinedCount_offset, value); |
| } |
| |
| |
| // Note: JDK1.1 and before had a privateInfo_offset field which was used for the |
| // platform thread structure, and a eetop offset which was used for thread |
| // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures |
| // merged, so in the HotSpot VM we just use the eetop field for the thread |
| // instead of the privateInfo_offset. |
| // |
| // Note: The stackSize field is only present starting in 1.4. |
| |
| int java_lang_Thread::_name_offset = 0; |
| int java_lang_Thread::_group_offset = 0; |
| int java_lang_Thread::_contextClassLoader_offset = 0; |
| int java_lang_Thread::_inheritedAccessControlContext_offset = 0; |
| int java_lang_Thread::_priority_offset = 0; |
| int java_lang_Thread::_eetop_offset = 0; |
| int java_lang_Thread::_daemon_offset = 0; |
| int java_lang_Thread::_stillborn_offset = 0; |
| int java_lang_Thread::_stackSize_offset = 0; |
| int java_lang_Thread::_tid_offset = 0; |
| int java_lang_Thread::_thread_status_offset = 0; |
| int java_lang_Thread::_park_blocker_offset = 0; |
| int java_lang_Thread::_park_event_offset = 0 ; |
| |
| |
| void java_lang_Thread::compute_offsets() { |
| assert(_group_offset == 0, "offsets should be initialized only once"); |
| |
| klassOop k = SystemDictionary::thread_klass(); |
| compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature()); |
| compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature()); |
| compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature()); |
| compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature()); |
| compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature()); |
| compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); |
| compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature()); |
| compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature()); |
| // The stackSize field is only present starting in 1.4, so don't go fatal. |
| compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature()); |
| // The tid and thread_status fields are only present starting in 1.5, so don't go fatal. |
| compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature()); |
| compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature()); |
| // The parkBlocker field is only present starting in 1.6, so don't go fatal. |
| compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature()); |
| compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(), |
| vmSymbols::long_signature()); |
| } |
| |
| |
| JavaThread* java_lang_Thread::thread(oop java_thread) { |
| return (JavaThread*)java_thread->address_field(_eetop_offset); |
| } |
| |
| |
| void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) { |
| java_thread->address_field_put(_eetop_offset, (address)thread); |
| } |
| |
| |
| typeArrayOop java_lang_Thread::name(oop java_thread) { |
| oop name = java_thread->obj_field(_name_offset); |
| assert(name == NULL || (name->is_typeArray() && typeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking"); |
| return typeArrayOop(name); |
| } |
| |
| |
| void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) { |
| assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL"); |
| java_thread->obj_field_put(_name_offset, name); |
| } |
| |
| |
| ThreadPriority java_lang_Thread::priority(oop java_thread) { |
| return (ThreadPriority)java_thread->int_field(_priority_offset); |
| } |
| |
| |
| void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) { |
| java_thread->int_field_put(_priority_offset, priority); |
| } |
| |
| |
| oop java_lang_Thread::threadGroup(oop java_thread) { |
| return java_thread->obj_field(_group_offset); |
| } |
| |
| |
| bool java_lang_Thread::is_stillborn(oop java_thread) { |
| return java_thread->bool_field(_stillborn_offset) != 0; |
| } |
| |
| |
| // We never have reason to turn the stillborn bit off |
| void java_lang_Thread::set_stillborn(oop java_thread) { |
| java_thread->bool_field_put(_stillborn_offset, true); |
| } |
| |
| |
| bool java_lang_Thread::is_alive(oop java_thread) { |
| JavaThread* thr = java_lang_Thread::thread(java_thread); |
| return (thr != NULL); |
| } |
| |
| |
| bool java_lang_Thread::is_daemon(oop java_thread) { |
| return java_thread->bool_field(_daemon_offset) != 0; |
| } |
| |
| |
| void java_lang_Thread::set_daemon(oop java_thread) { |
| java_thread->bool_field_put(_daemon_offset, true); |
| } |
| |
| oop java_lang_Thread::context_class_loader(oop java_thread) { |
| return java_thread->obj_field(_contextClassLoader_offset); |
| } |
| |
| oop java_lang_Thread::inherited_access_control_context(oop java_thread) { |
| return java_thread->obj_field(_inheritedAccessControlContext_offset); |
| } |
| |
| |
| jlong java_lang_Thread::stackSize(oop java_thread) { |
| // The stackSize field is only present starting in 1.4 |
| if (_stackSize_offset > 0) { |
| assert(JDK_Version::is_gte_jdk14x_version(), "sanity check"); |
| return java_thread->long_field(_stackSize_offset); |
| } else { |
| return 0; |
| } |
| } |
| |
| // Write the thread status value to threadStatus field in java.lang.Thread java class. |
| void java_lang_Thread::set_thread_status(oop java_thread, |
| java_lang_Thread::ThreadStatus status) { |
| assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm"); |
| // The threadStatus is only present starting in 1.5 |
| if (_thread_status_offset > 0) { |
| java_thread->int_field_put(_thread_status_offset, status); |
| } |
| } |
| |
| // Read thread status value from threadStatus field in java.lang.Thread java class. |
| java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) { |
| assert(Thread::current()->is_VM_thread() || |
| JavaThread::current()->thread_state() == _thread_in_vm, |
| "Java Thread is not running in vm"); |
| // The threadStatus is only present starting in 1.5 |
| if (_thread_status_offset > 0) { |
| return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); |
| } else { |
| // All we can easily figure out is if it is alive, but that is |
| // enough info for a valid unknown status. |
| // These aren't restricted to valid set ThreadStatus values, so |
| // use JVMTI values and cast. |
| JavaThread* thr = java_lang_Thread::thread(java_thread); |
| if (thr == NULL) { |
| // the thread hasn't run yet or is in the process of exiting |
| return NEW; |
| } |
| return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE; |
| } |
| } |
| |
| |
| jlong java_lang_Thread::thread_id(oop java_thread) { |
| // The thread ID field is only present starting in 1.5 |
| if (_tid_offset > 0) { |
| return java_thread->long_field(_tid_offset); |
| } else { |
| return 0; |
| } |
| } |
| |
| oop java_lang_Thread::park_blocker(oop java_thread) { |
| assert(JDK_Version::supports_thread_park_blocker() && _park_blocker_offset != 0, |
| "Must support parkBlocker field"); |
| |
| if (_park_blocker_offset > 0) { |
| return java_thread->obj_field(_park_blocker_offset); |
| } |
| |
| return NULL; |
| } |
| |
| jlong java_lang_Thread::park_event(oop java_thread) { |
| if (_park_event_offset > 0) { |
| return java_thread->long_field(_park_event_offset); |
| } |
| return 0; |
| } |
| |
| bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) { |
| if (_park_event_offset > 0) { |
| java_thread->long_field_put(_park_event_offset, ptr); |
| return true; |
| } |
| return false; |
| } |
| |
| |
| const char* java_lang_Thread::thread_status_name(oop java_thread) { |
| assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status"); |
| ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); |
| switch (status) { |
| case NEW : return "NEW"; |
| case RUNNABLE : return "RUNNABLE"; |
| case SLEEPING : return "TIMED_WAITING (sleeping)"; |
| case IN_OBJECT_WAIT : return "WAITING (on object monitor)"; |
| case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)"; |
| case PARKED : return "WAITING (parking)"; |
| case PARKED_TIMED : return "TIMED_WAITING (parking)"; |
| case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)"; |
| case TERMINATED : return "TERMINATED"; |
| default : return "UNKNOWN"; |
| }; |
| } |
| int java_lang_ThreadGroup::_parent_offset = 0; |
| int java_lang_ThreadGroup::_name_offset = 0; |
| int java_lang_ThreadGroup::_threads_offset = 0; |
| int java_lang_ThreadGroup::_groups_offset = 0; |
| int java_lang_ThreadGroup::_maxPriority_offset = 0; |
| int java_lang_ThreadGroup::_destroyed_offset = 0; |
| int java_lang_ThreadGroup::_daemon_offset = 0; |
| int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0; |
| int java_lang_ThreadGroup::_nthreads_offset = 0; |
| int java_lang_ThreadGroup::_ngroups_offset = 0; |
| |
| oop java_lang_ThreadGroup::parent(oop java_thread_group) { |
| assert(java_thread_group->is_oop(), "thread group must be oop"); |
| return java_thread_group->obj_field(_parent_offset); |
| } |
| |
| // ("name as oop" accessor is not necessary) |
| |
| typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) { |
| oop name = java_thread_group->obj_field(_name_offset); |
| // ThreadGroup.name can be null |
| return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name); |
| } |
| |
| int java_lang_ThreadGroup::nthreads(oop java_thread_group) { |
| assert(java_thread_group->is_oop(), "thread group must be oop"); |
| return java_thread_group->int_field(_nthreads_offset); |
| } |
| |
| objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) { |
| oop threads = java_thread_group->obj_field(_threads_offset); |
| assert(threads != NULL, "threadgroups should have threads"); |
| assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code |
| return objArrayOop(threads); |
| } |
| |
| int java_lang_ThreadGroup::ngroups(oop java_thread_group) { |
| assert(java_thread_group->is_oop(), "thread group must be oop"); |
| return java_thread_group->int_field(_ngroups_offset); |
| } |
| |
| objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) { |
| oop groups = java_thread_group->obj_field(_groups_offset); |
| assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code |
| return objArrayOop(groups); |
| } |
| |
| ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) { |
| assert(java_thread_group->is_oop(), "thread group must be oop"); |
| return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset); |
| } |
| |
| bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) { |
| assert(java_thread_group->is_oop(), "thread group must be oop"); |
| return java_thread_group->bool_field(_destroyed_offset) != 0; |
| } |
| |
| bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) { |
| assert(java_thread_group->is_oop(), "thread group must be oop"); |
| return java_thread_group->bool_field(_daemon_offset) != 0; |
| } |
| |
| bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) { |
| assert(java_thread_group->is_oop(), "thread group must be oop"); |
| return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0; |
| } |
| |
| void java_lang_ThreadGroup::compute_offsets() { |
| assert(_parent_offset == 0, "offsets should be initialized only once"); |
| |
| klassOop k = SystemDictionary::threadGroup_klass(); |
| |
| compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature()); |
| compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); |
| compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature()); |
| compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature()); |
| compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature()); |
| compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature()); |
| compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); |
| compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature()); |
| compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature()); |
| compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature()); |
| } |
| |
| oop java_lang_Throwable::backtrace(oop throwable) { |
| return throwable->obj_field_acquire(backtrace_offset); |
| } |
| |
| |
| void java_lang_Throwable::set_backtrace(oop throwable, oop value) { |
| throwable->release_obj_field_put(backtrace_offset, value); |
| } |
| |
| |
| oop java_lang_Throwable::message(oop throwable) { |
| return throwable->obj_field(detailMessage_offset); |
| } |
| |
| |
| oop java_lang_Throwable::message(Handle throwable) { |
| return throwable->obj_field(detailMessage_offset); |
| } |
| |
| |
| void java_lang_Throwable::set_message(oop throwable, oop value) { |
| throwable->obj_field_put(detailMessage_offset, value); |
| } |
| |
| |
| void java_lang_Throwable::clear_stacktrace(oop throwable) { |
| assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); |
| throwable->obj_field_put(stackTrace_offset, NULL); |
| } |
| |
| |
| void java_lang_Throwable::print(oop throwable, outputStream* st) { |
| ResourceMark rm; |
| klassOop k = throwable->klass(); |
| assert(k != NULL, "just checking"); |
| st->print("%s", instanceKlass::cast(k)->external_name()); |
| oop msg = message(throwable); |
| if (msg != NULL) { |
| st->print(": %s", java_lang_String::as_utf8_string(msg)); |
| } |
| } |
| |
| |
| void java_lang_Throwable::print(Handle throwable, outputStream* st) { |
| ResourceMark rm; |
| klassOop k = throwable->klass(); |
| assert(k != NULL, "just checking"); |
| st->print("%s", instanceKlass::cast(k)->external_name()); |
| oop msg = message(throwable); |
| if (msg != NULL) { |
| st->print(": %s", java_lang_String::as_utf8_string(msg)); |
| } |
| } |
| |
| // Print stack trace element to resource allocated buffer |
| char* java_lang_Throwable::print_stack_element_to_buffer(methodOop method, int bci) { |
| // Get strings and string lengths |
| instanceKlass* klass = instanceKlass::cast(method->method_holder()); |
| const char* klass_name = klass->external_name(); |
| int buf_len = (int)strlen(klass_name); |
| char* source_file_name; |
| if (klass->source_file_name() == NULL) { |
| source_file_name = NULL; |
| } else { |
| source_file_name = klass->source_file_name()->as_C_string(); |
| buf_len += (int)strlen(source_file_name); |
| } |
| char* method_name = method->name()->as_C_string(); |
| buf_len += (int)strlen(method_name); |
| |
| // Allocate temporary buffer with extra space for formatting and line number |
| char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64); |
| |
| // Print stack trace line in buffer |
| sprintf(buf, "\tat %s.%s", klass_name, method_name); |
| if (method->is_native()) { |
| strcat(buf, "(Native Method)"); |
| } else { |
| int line_number = method->line_number_from_bci(bci); |
| if (source_file_name != NULL && (line_number != -1)) { |
| // Sourcename and linenumber |
| sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number); |
| } else if (source_file_name != NULL) { |
| // Just sourcename |
| sprintf(buf + (int)strlen(buf), "(%s)", source_file_name); |
| } else { |
| // Neither soucename and linenumber |
| sprintf(buf + (int)strlen(buf), "(Unknown Source)"); |
| } |
| nmethod* nm = method->code(); |
| if (WizardMode && nm != NULL) { |
| sprintf(buf + (int)strlen(buf), "(nmethod %#x)", nm); |
| } |
| } |
| |
| return buf; |
| } |
| |
| |
| void java_lang_Throwable::print_stack_element(Handle stream, methodOop method, int bci) { |
| ResourceMark rm; |
| char* buf = print_stack_element_to_buffer(method, bci); |
| print_to_stream(stream, buf); |
| } |
| |
| void java_lang_Throwable::print_stack_element(outputStream *st, methodOop method, int bci) { |
| ResourceMark rm; |
| char* buf = print_stack_element_to_buffer(method, bci); |
| st->print_cr("%s", buf); |
| } |
| |
| void java_lang_Throwable::print_to_stream(Handle stream, const char* str) { |
| if (stream.is_null()) { |
| tty->print_cr("%s", str); |
| } else { |
| EXCEPTION_MARK; |
| JavaValue result(T_VOID); |
| Handle arg (THREAD, oopFactory::new_charArray(str, THREAD)); |
| if (!HAS_PENDING_EXCEPTION) { |
| JavaCalls::call_virtual(&result, |
| stream, |
| KlassHandle(THREAD, stream->klass()), |
| vmSymbolHandles::println_name(), |
| vmSymbolHandles::char_array_void_signature(), |
| arg, |
| THREAD); |
| } |
| // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. |
| if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION; |
| } |
| |
| } |
| |
| |
| const char* java_lang_Throwable::no_stack_trace_message() { |
| return "\t<<no stack trace available>>"; |
| } |
| |
| |
| // Currently used only for exceptions occurring during startup |
| void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) { |
| Thread *THREAD = Thread::current(); |
| Handle h_throwable(THREAD, throwable); |
| while (h_throwable.not_null()) { |
| objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable()))); |
| if (result.is_null()) { |
| st->print_cr(no_stack_trace_message()); |
| return; |
| } |
| |
| while (result.not_null()) { |
| objArrayHandle methods (THREAD, |
| objArrayOop(result->obj_at(trace_methods_offset))); |
| typeArrayHandle bcis (THREAD, |
| typeArrayOop(result->obj_at(trace_bcis_offset))); |
| |
| if (methods.is_null() || bcis.is_null()) { |
| st->print_cr(no_stack_trace_message()); |
| return; |
| } |
| |
| int length = methods()->length(); |
| for (int index = 0; index < length; index++) { |
| methodOop method = methodOop(methods()->obj_at(index)); |
| if (method == NULL) goto handle_cause; |
| int bci = bcis->ushort_at(index); |
| print_stack_element(st, method, bci); |
| } |
| result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset))); |
| } |
| handle_cause: |
| { |
| EXCEPTION_MARK; |
| JavaValue result(T_OBJECT); |
| JavaCalls::call_virtual(&result, |
| h_throwable, |
| KlassHandle(THREAD, h_throwable->klass()), |
| vmSymbolHandles::getCause_name(), |
| vmSymbolHandles::void_throwable_signature(), |
| THREAD); |
| // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. |
| if (HAS_PENDING_EXCEPTION) { |
| CLEAR_PENDING_EXCEPTION; |
| h_throwable = Handle(); |
| } else { |
| h_throwable = Handle(THREAD, (oop) result.get_jobject()); |
| if (h_throwable.not_null()) { |
| st->print("Caused by: "); |
| print(h_throwable, st); |
| st->cr(); |
| } |
| } |
| } |
| } |
| } |
| |
| |
| void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) { |
| // Note: this is no longer used in Merlin, but we support it for compatibility. |
| Thread *thread = Thread::current(); |
| Handle stream(thread, print_stream); |
| objArrayHandle result (thread, objArrayOop(backtrace(throwable))); |
| if (result.is_null()) { |
| print_to_stream(stream, no_stack_trace_message()); |
| return; |
| } |
| |
| while (result.not_null()) { |
| objArrayHandle methods (thread, |
| objArrayOop(result->obj_at(trace_methods_offset))); |
| typeArrayHandle bcis (thread, |
| typeArrayOop(result->obj_at(trace_bcis_offset))); |
| |
| if (methods.is_null() || bcis.is_null()) { |
| print_to_stream(stream, no_stack_trace_message()); |
| return; |
| } |
| |
| int length = methods()->length(); |
| for (int index = 0; index < length; index++) { |
| methodOop method = methodOop(methods()->obj_at(index)); |
| if (method == NULL) return; |
| int bci = bcis->ushort_at(index); |
| print_stack_element(stream, method, bci); |
| } |
| result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset))); |
| } |
| } |
| |
| // This class provides a simple wrapper over the internal structure of |
| // exception backtrace to insulate users of the backtrace from needing |
| // to know what it looks like. |
| class BacktraceBuilder: public StackObj { |
| private: |
| Handle _backtrace; |
| objArrayOop _head; |
| objArrayOop _methods; |
| typeArrayOop _bcis; |
| int _index; |
| bool _dirty; |
| No_Safepoint_Verifier _nsv; |
| |
| public: |
| |
| enum { |
| trace_methods_offset = java_lang_Throwable::trace_methods_offset, |
| trace_bcis_offset = java_lang_Throwable::trace_bcis_offset, |
| trace_next_offset = java_lang_Throwable::trace_next_offset, |
| trace_size = java_lang_Throwable::trace_size, |
| trace_chunk_size = java_lang_Throwable::trace_chunk_size |
| }; |
| |
| // constructor for new backtrace |
| BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _dirty(false) { |
| expand(CHECK); |
| _backtrace = _head; |
| _index = 0; |
| } |
| |
| void flush() { |
| if (_dirty && _methods != NULL) { |
| BarrierSet* bs = Universe::heap()->barrier_set(); |
| assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); |
| bs->write_ref_array(MemRegion((HeapWord*)_methods->base(), |
| _methods->array_size())); |
| _dirty = false; |
| } |
| } |
| |
| void expand(TRAPS) { |
| flush(); |
| |
| objArrayHandle old_head(THREAD, _head); |
| Pause_No_Safepoint_Verifier pnsv(&_nsv); |
| |
| objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK); |
| objArrayHandle new_head(THREAD, head); |
| |
| objArrayOop methods = oopFactory::new_objectArray(trace_chunk_size, CHECK); |
| objArrayHandle new_methods(THREAD, methods); |
| |
| typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK); |
| typeArrayHandle new_bcis(THREAD, bcis); |
| |
| if (!old_head.is_null()) { |
| old_head->obj_at_put(trace_next_offset, new_head()); |
| } |
| new_head->obj_at_put(trace_methods_offset, new_methods()); |
| new_head->obj_at_put(trace_bcis_offset, new_bcis()); |
| |
| _head = new_head(); |
| _methods = new_methods(); |
| _bcis = new_bcis(); |
| _index = 0; |
| } |
| |
| oop backtrace() { |
| flush(); |
| return _backtrace(); |
| } |
| |
| inline void push(methodOop method, short bci, TRAPS) { |
| if (_index >= trace_chunk_size) { |
| methodHandle mhandle(THREAD, method); |
| expand(CHECK); |
| method = mhandle(); |
| } |
| |
| _methods->obj_at_put(_index, method); |
| // bad for UseCompressedOops |
| // *_methods->obj_at_addr(_index) = method; |
| _bcis->ushort_at_put(_index, bci); |
| _index++; |
| _dirty = true; |
| } |
| |
| methodOop current_method() { |
| assert(_index >= 0 && _index < trace_chunk_size, "out of range"); |
| return methodOop(_methods->obj_at(_index)); |
| } |
| |
| jushort current_bci() { |
| assert(_index >= 0 && _index < trace_chunk_size, "out of range"); |
| return _bcis->ushort_at(_index); |
| } |
| }; |
| |
| |
| void java_lang_Throwable::fill_in_stack_trace(Handle throwable, TRAPS) { |
| if (!StackTraceInThrowable) return; |
| ResourceMark rm(THREAD); |
| |
| // Start out by clearing the backtrace for this object, in case the VM |
| // runs out of memory while allocating the stack trace |
| set_backtrace(throwable(), NULL); |
| if (JDK_Version::is_gte_jdk14x_version()) { |
| // New since 1.4, clear lazily constructed Java level stacktrace if |
| // refilling occurs |
| clear_stacktrace(throwable()); |
| } |
| |
| int max_depth = MaxJavaStackTraceDepth; |
| JavaThread* thread = (JavaThread*)THREAD; |
| BacktraceBuilder bt(CHECK); |
| |
| // Instead of using vframe directly, this version of fill_in_stack_trace |
| // basically handles everything by hand. This significantly improved the |
| // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows. |
| // See bug 6333838 for more details. |
| // The "ASSERT" here is to verify this method generates the exactly same stack |
| // trace as utilizing vframe. |
| #ifdef ASSERT |
| vframeStream st(thread); |
| methodHandle st_method(THREAD, st.method()); |
| #endif |
| int total_count = 0; |
| RegisterMap map(thread, false); |
| int decode_offset = 0; |
| nmethod* nm = NULL; |
| bool skip_fillInStackTrace_check = false; |
| bool skip_throwableInit_check = false; |
| |
| for (frame fr = thread->last_frame(); max_depth != total_count;) { |
| methodOop method = NULL; |
| int bci = 0; |
| |
| // Compiled java method case. |
| if (decode_offset != 0) { |
| DebugInfoReadStream stream(nm, decode_offset); |
| decode_offset = stream.read_int(); |
| method = (methodOop)nm->oop_at(stream.read_int()); |
| bci = stream.read_bci(); |
| } else { |
| if (fr.is_first_frame()) break; |
| address pc = fr.pc(); |
| if (fr.is_interpreted_frame()) { |
| intptr_t bcx = fr.interpreter_frame_bcx(); |
| method = fr.interpreter_frame_method(); |
| bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx); |
| fr = fr.sender(&map); |
| } else { |
| CodeBlob* cb = fr.cb(); |
| // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL |
| // but non nmethod |
| fr = fr.sender(&map); |
| if (cb == NULL || !cb->is_nmethod()) { |
| continue; |
| } |
| nm = (nmethod*)cb; |
| if (nm->method()->is_native()) { |
| method = nm->method(); |
| bci = 0; |
| } else { |
| PcDesc* pd = nm->pc_desc_at(pc); |
| decode_offset = pd->scope_decode_offset(); |
| // if decode_offset is not equal to 0, it will execute the |
| // "compiled java method case" at the beginning of the loop. |
| continue; |
| } |
| } |
| } |
| #ifdef ASSERT |
| assert(st_method() == method && st.bci() == bci, |
| "Wrong stack trace"); |
| st.next(); |
| // vframeStream::method isn't GC-safe so store off a copy |
| // of the methodOop in case we GC. |
| if (!st.at_end()) { |
| st_method = st.method(); |
| } |
| #endif |
| if (!skip_fillInStackTrace_check) { |
| // check "fillInStackTrace" only once, so we negate the flag |
| // after the first time check. |
| skip_fillInStackTrace_check = true; |
| if (method->name() == vmSymbols::fillInStackTrace_name()) { |
| continue; |
| } |
| } |
| // skip <init> methods of the exceptions klass. If there is <init> methods |
| // that belongs to a superclass of the exception we are going to skipping |
| // them in stack trace. This is simlar to classic VM. |
| if (!skip_throwableInit_check) { |
| if (method->name() == vmSymbols::object_initializer_name() && |
| throwable->is_a(method->method_holder())) { |
| continue; |
| } else { |
| // if no "Throwable.init()" method found, we stop checking it next time. |
| skip_throwableInit_check = true; |
| } |
| } |
| bt.push(method, bci, CHECK); |
| total_count++; |
| } |
| |
| // Put completed stack trace into throwable object |
| set_backtrace(throwable(), bt.backtrace()); |
| } |
| |
| void java_lang_Throwable::fill_in_stack_trace(Handle throwable) { |
| // No-op if stack trace is disabled |
| if (!StackTraceInThrowable) { |
| return; |
| } |
| |
| // Disable stack traces for some preallocated out of memory errors |
| if (!Universe::should_fill_in_stack_trace(throwable)) { |
| return; |
| } |
| |
| PRESERVE_EXCEPTION_MARK; |
| |
| JavaThread* thread = JavaThread::active(); |
| fill_in_stack_trace(throwable, thread); |
| // ignore exceptions thrown during stack trace filling |
| CLEAR_PENDING_EXCEPTION; |
| } |
| |
| void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) { |
| // Allocate stack trace - backtrace is created but not filled in |
| |
| // No-op if stack trace is disabled |
| if (!StackTraceInThrowable) return; |
| |
| objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK); |
| objArrayHandle backtrace (THREAD, h_oop); |
| objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK); |
| objArrayHandle methods (THREAD, m_oop); |
| typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK); |
| typeArrayHandle bcis(THREAD, b); |
| |
| // backtrace has space for one chunk (next is NULL) |
| backtrace->obj_at_put(trace_methods_offset, methods()); |
| backtrace->obj_at_put(trace_bcis_offset, bcis()); |
| set_backtrace(throwable(), backtrace()); |
| } |
| |
| |
| void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) { |
| // Fill in stack trace into preallocated backtrace (no GC) |
| |
| // No-op if stack trace is disabled |
| if (!StackTraceInThrowable) return; |
| |
| assert(throwable->is_a(SystemDictionary::throwable_klass()), "sanity check"); |
| |
| oop backtrace = java_lang_Throwable::backtrace(throwable()); |
| assert(backtrace != NULL, "backtrace not preallocated"); |
| |
| oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset); |
| objArrayOop methods = objArrayOop(m); |
| assert(methods != NULL && methods->length() > 0, "method array not preallocated"); |
| |
| oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset); |
| typeArrayOop bcis = typeArrayOop(b); |
| assert(bcis != NULL, "bci array not preallocated"); |
| |
| assert(methods->length() == bcis->length(), "method and bci arrays should match"); |
| |
| JavaThread* thread = JavaThread::current(); |
| ResourceMark rm(thread); |
| vframeStream st(thread); |
| |
| // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init |
| // methods as preallocated errors aren't created by "java" code. |
| |
| // fill in as much stack trace as possible |
| int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth); |
| int chunk_count = 0; |
| |
| for (;!st.at_end(); st.next()) { |
| // add element |
| bcis->ushort_at_put(chunk_count, st.bci()); |
| methods->obj_at_put(chunk_count, st.method()); |
| |
| chunk_count++; |
| |
| // Bail-out for deep stacks |
| if (chunk_count >= max_chunks) break; |
| } |
| } |
| |
| |
| int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) { |
| if (throwable == NULL) { |
| THROW_0(vmSymbols::java_lang_NullPointerException()); |
| } |
| objArrayOop chunk = objArrayOop(backtrace(throwable)); |
| int depth = 0; |
| if (chunk != NULL) { |
| // Iterate over chunks and count full ones |
| while (true) { |
| objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset)); |
| if (next == NULL) break; |
| depth += trace_chunk_size; |
| chunk = next; |
| } |
| assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check"); |
| // Count element in remaining partial chunk |
| objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset)); |
| typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); |
| assert(methods != NULL && bcis != NULL, "sanity check"); |
| for (int i = 0; i < methods->length(); i++) { |
| if (methods->obj_at(i) == NULL) break; |
| depth++; |
| } |
| } |
| return depth; |
| } |
| |
| |
| oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) { |
| if (throwable == NULL) { |
| THROW_0(vmSymbols::java_lang_NullPointerException()); |
| } |
| if (index < 0) { |
| THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); |
| } |
| // Compute how many chunks to skip and index into actual chunk |
| objArrayOop chunk = objArrayOop(backtrace(throwable)); |
| int skip_chunks = index / trace_chunk_size; |
| int chunk_index = index % trace_chunk_size; |
| while (chunk != NULL && skip_chunks > 0) { |
| chunk = objArrayOop(chunk->obj_at(trace_next_offset)); |
| skip_chunks--; |
| } |
| if (chunk == NULL) { |
| THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); |
| } |
| // Get method,bci from chunk |
| objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset)); |
| typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); |
| assert(methods != NULL && bcis != NULL, "sanity check"); |
| methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index))); |
| int bci = bcis->ushort_at(chunk_index); |
| // Chunk can be partial full |
| if (method.is_null()) { |
| THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); |
| } |
| |
| oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0); |
| return element; |
| } |
| |
| oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) { |
| // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs |
| assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); |
| |
| // Allocate java.lang.StackTraceElement instance |
| klassOop k = SystemDictionary::stackTraceElement_klass(); |
| assert(k != NULL, "must be loaded in 1.4+"); |
| instanceKlassHandle ik (THREAD, k); |
| if (ik->should_be_initialized()) { |
| ik->initialize(CHECK_0); |
| } |
| |
| Handle element = ik->allocate_instance_handle(CHECK_0); |
| // Fill in class name |
| ResourceMark rm(THREAD); |
| const char* str = instanceKlass::cast(method->method_holder())->external_name(); |
| oop classname = StringTable::intern((char*) str, CHECK_0); |
| java_lang_StackTraceElement::set_declaringClass(element(), classname); |
| // Fill in method name |
| oop methodname = StringTable::intern(method->name(), CHECK_0); |
| java_lang_StackTraceElement::set_methodName(element(), methodname); |
| // Fill in source file name |
| symbolOop source = instanceKlass::cast(method->method_holder())->source_file_name(); |
| oop filename = StringTable::intern(source, CHECK_0); |
| java_lang_StackTraceElement::set_fileName(element(), filename); |
| // File in source line number |
| int line_number; |
| if (method->is_native()) { |
| // Negative value different from -1 below, enabling Java code in |
| // class java.lang.StackTraceElement to distinguish "native" from |
| // "no LineNumberTable". |
| line_number = -2; |
| } else { |
| // Returns -1 if no LineNumberTable, and otherwise actual line number |
| line_number = method->line_number_from_bci(bci); |
| } |
| java_lang_StackTraceElement::set_lineNumber(element(), line_number); |
| |
| return element(); |
| } |
| |
| |
| void java_lang_reflect_AccessibleObject::compute_offsets() { |
| klassOop k = SystemDictionary::reflect_accessible_object_klass(); |
| compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature()); |
| } |
| |
| jboolean java_lang_reflect_AccessibleObject::override(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return (jboolean) reflect->bool_field(override_offset); |
| } |
| |
| void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->bool_field_put(override_offset, (int) value); |
| } |
| |
| void java_lang_reflect_Method::compute_offsets() { |
| klassOop k = SystemDictionary::reflect_method_klass(); |
| compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); |
| compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); |
| compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature()); |
| compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); |
| compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); |
| compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); |
| compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); |
| // The generic signature and annotations fields are only present in 1.5 |
| signature_offset = -1; |
| annotations_offset = -1; |
| parameter_annotations_offset = -1; |
| annotation_default_offset = -1; |
| compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); |
| compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); |
| compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); |
| compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature()); |
| } |
| |
| Handle java_lang_reflect_Method::create(TRAPS) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| klassOop klass = SystemDictionary::reflect_method_klass(); |
| // This class is eagerly initialized during VM initialization, since we keep a refence |
| // to one of the methods |
| assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized"); |
| return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH); |
| } |
| |
| oop java_lang_reflect_Method::clazz(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return reflect->obj_field(clazz_offset); |
| } |
| |
| void java_lang_reflect_Method::set_clazz(oop reflect, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->obj_field_put(clazz_offset, value); |
| } |
| |
| int java_lang_reflect_Method::slot(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return reflect->int_field(slot_offset); |
| } |
| |
| void java_lang_reflect_Method::set_slot(oop reflect, int value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->int_field_put(slot_offset, value); |
| } |
| |
| oop java_lang_reflect_Method::name(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return method->obj_field(name_offset); |
| } |
| |
| void java_lang_reflect_Method::set_name(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| method->obj_field_put(name_offset, value); |
| } |
| |
| oop java_lang_reflect_Method::return_type(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return method->obj_field(returnType_offset); |
| } |
| |
| void java_lang_reflect_Method::set_return_type(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| method->obj_field_put(returnType_offset, value); |
| } |
| |
| oop java_lang_reflect_Method::parameter_types(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return method->obj_field(parameterTypes_offset); |
| } |
| |
| void java_lang_reflect_Method::set_parameter_types(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| method->obj_field_put(parameterTypes_offset, value); |
| } |
| |
| oop java_lang_reflect_Method::exception_types(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return method->obj_field(exceptionTypes_offset); |
| } |
| |
| void java_lang_reflect_Method::set_exception_types(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| method->obj_field_put(exceptionTypes_offset, value); |
| } |
| |
| int java_lang_reflect_Method::modifiers(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return method->int_field(modifiers_offset); |
| } |
| |
| void java_lang_reflect_Method::set_modifiers(oop method, int value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| method->int_field_put(modifiers_offset, value); |
| } |
| |
| bool java_lang_reflect_Method::has_signature_field() { |
| return (signature_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Method::signature(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_signature_field(), "signature field must be present"); |
| return method->obj_field(signature_offset); |
| } |
| |
| void java_lang_reflect_Method::set_signature(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_signature_field(), "signature field must be present"); |
| method->obj_field_put(signature_offset, value); |
| } |
| |
| bool java_lang_reflect_Method::has_annotations_field() { |
| return (annotations_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Method::annotations(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotations_field(), "annotations field must be present"); |
| return method->obj_field(annotations_offset); |
| } |
| |
| void java_lang_reflect_Method::set_annotations(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotations_field(), "annotations field must be present"); |
| method->obj_field_put(annotations_offset, value); |
| } |
| |
| bool java_lang_reflect_Method::has_parameter_annotations_field() { |
| return (parameter_annotations_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Method::parameter_annotations(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_parameter_annotations_field(), "parameter annotations field must be present"); |
| return method->obj_field(parameter_annotations_offset); |
| } |
| |
| void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_parameter_annotations_field(), "parameter annotations field must be present"); |
| method->obj_field_put(parameter_annotations_offset, value); |
| } |
| |
| bool java_lang_reflect_Method::has_annotation_default_field() { |
| return (annotation_default_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Method::annotation_default(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotation_default_field(), "annotation default field must be present"); |
| return method->obj_field(annotation_default_offset); |
| } |
| |
| void java_lang_reflect_Method::set_annotation_default(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotation_default_field(), "annotation default field must be present"); |
| method->obj_field_put(annotation_default_offset, value); |
| } |
| |
| void java_lang_reflect_Constructor::compute_offsets() { |
| klassOop k = SystemDictionary::reflect_constructor_klass(); |
| compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); |
| compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); |
| compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); |
| compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); |
| compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); |
| // The generic signature and annotations fields are only present in 1.5 |
| signature_offset = -1; |
| annotations_offset = -1; |
| parameter_annotations_offset = -1; |
| compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); |
| compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); |
| compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); |
| } |
| |
| Handle java_lang_reflect_Constructor::create(TRAPS) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| symbolHandle name = vmSymbolHandles::java_lang_reflect_Constructor(); |
| klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); |
| instanceKlassHandle klass (THREAD, k); |
| // Ensure it is initialized |
| klass->initialize(CHECK_NH); |
| return klass->allocate_instance_handle(CHECK_NH); |
| } |
| |
| oop java_lang_reflect_Constructor::clazz(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return reflect->obj_field(clazz_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->obj_field_put(clazz_offset, value); |
| } |
| |
| oop java_lang_reflect_Constructor::parameter_types(oop constructor) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return constructor->obj_field(parameterTypes_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| constructor->obj_field_put(parameterTypes_offset, value); |
| } |
| |
| oop java_lang_reflect_Constructor::exception_types(oop constructor) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return constructor->obj_field(exceptionTypes_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| constructor->obj_field_put(exceptionTypes_offset, value); |
| } |
| |
| int java_lang_reflect_Constructor::slot(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return reflect->int_field(slot_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_slot(oop reflect, int value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->int_field_put(slot_offset, value); |
| } |
| |
| int java_lang_reflect_Constructor::modifiers(oop constructor) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return constructor->int_field(modifiers_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| constructor->int_field_put(modifiers_offset, value); |
| } |
| |
| bool java_lang_reflect_Constructor::has_signature_field() { |
| return (signature_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Constructor::signature(oop constructor) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_signature_field(), "signature field must be present"); |
| return constructor->obj_field(signature_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_signature_field(), "signature field must be present"); |
| constructor->obj_field_put(signature_offset, value); |
| } |
| |
| bool java_lang_reflect_Constructor::has_annotations_field() { |
| return (annotations_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Constructor::annotations(oop constructor) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotations_field(), "annotations field must be present"); |
| return constructor->obj_field(annotations_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotations_field(), "annotations field must be present"); |
| constructor->obj_field_put(annotations_offset, value); |
| } |
| |
| bool java_lang_reflect_Constructor::has_parameter_annotations_field() { |
| return (parameter_annotations_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Constructor::parameter_annotations(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_parameter_annotations_field(), "parameter annotations field must be present"); |
| return method->obj_field(parameter_annotations_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_parameter_annotations_field(), "parameter annotations field must be present"); |
| method->obj_field_put(parameter_annotations_offset, value); |
| } |
| |
| void java_lang_reflect_Field::compute_offsets() { |
| klassOop k = SystemDictionary::reflect_field_klass(); |
| compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); |
| compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); |
| compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature()); |
| compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); |
| compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); |
| // The generic signature and annotations fields are only present in 1.5 |
| signature_offset = -1; |
| annotations_offset = -1; |
| compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); |
| compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); |
| } |
| |
| Handle java_lang_reflect_Field::create(TRAPS) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| symbolHandle name = vmSymbolHandles::java_lang_reflect_Field(); |
| klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); |
| instanceKlassHandle klass (THREAD, k); |
| // Ensure it is initialized |
| klass->initialize(CHECK_NH); |
| return klass->allocate_instance_handle(CHECK_NH); |
| } |
| |
| oop java_lang_reflect_Field::clazz(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return reflect->obj_field(clazz_offset); |
| } |
| |
| void java_lang_reflect_Field::set_clazz(oop reflect, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->obj_field_put(clazz_offset, value); |
| } |
| |
| oop java_lang_reflect_Field::name(oop field) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return field->obj_field(name_offset); |
| } |
| |
| void java_lang_reflect_Field::set_name(oop field, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| field->obj_field_put(name_offset, value); |
| } |
| |
| oop java_lang_reflect_Field::type(oop field) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return field->obj_field(type_offset); |
| } |
| |
| void java_lang_reflect_Field::set_type(oop field, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| field->obj_field_put(type_offset, value); |
| } |
| |
| int java_lang_reflect_Field::slot(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return reflect->int_field(slot_offset); |
| } |
| |
| void java_lang_reflect_Field::set_slot(oop reflect, int value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->int_field_put(slot_offset, value); |
| } |
| |
| int java_lang_reflect_Field::modifiers(oop field) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return field->int_field(modifiers_offset); |
| } |
| |
| void java_lang_reflect_Field::set_modifiers(oop field, int value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| field->int_field_put(modifiers_offset, value); |
| } |
| |
| bool java_lang_reflect_Field::has_signature_field() { |
| return (signature_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Field::signature(oop field) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_signature_field(), "signature field must be present"); |
| return field->obj_field(signature_offset); |
| } |
| |
| void java_lang_reflect_Field::set_signature(oop field, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_signature_field(), "signature field must be present"); |
| field->obj_field_put(signature_offset, value); |
| } |
| |
| bool java_lang_reflect_Field::has_annotations_field() { |
| return (annotations_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Field::annotations(oop field) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotations_field(), "annotations field must be present"); |
| return field->obj_field(annotations_offset); |
| } |
| |
| void java_lang_reflect_Field::set_annotations(oop field, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotations_field(), "annotations field must be present"); |
| field->obj_field_put(annotations_offset, value); |
| } |
| |
| |
| void sun_reflect_ConstantPool::compute_offsets() { |
| klassOop k = SystemDictionary::reflect_constant_pool_klass(); |
| // This null test can be removed post beta |
| if (k != NULL) { |
| compute_offset(_cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature()); |
| } |
| } |
| |
| |
| Handle sun_reflect_ConstantPool::create(TRAPS) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| klassOop k = SystemDictionary::reflect_constant_pool_klass(); |
| instanceKlassHandle klass (THREAD, k); |
| // Ensure it is initialized |
| klass->initialize(CHECK_NH); |
| return klass->allocate_instance_handle(CHECK_NH); |
| } |
| |
| |
| oop sun_reflect_ConstantPool::cp_oop(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return reflect->obj_field(_cp_oop_offset); |
| } |
| |
| |
| void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->obj_field_put(_cp_oop_offset, value); |
| } |
| |
| void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() { |
| klassOop k = SystemDictionary::reflect_unsafe_static_field_accessor_impl_klass(); |
| // This null test can be removed post beta |
| if (k != NULL) { |
| compute_offset(_base_offset, k, |
| vmSymbols::base_name(), vmSymbols::object_signature()); |
| } |
| } |
| |
| oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) { |
| klassOop k = SystemDictionary::box_klass(type); |
| if (k == NULL) return NULL; |
| instanceKlassHandle h (THREAD, k); |
| if (!h->is_initialized()) h->initialize(CHECK_0); |
| return h->allocate_instance(THREAD); |
| } |
| |
| |
| oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) { |
| oop box = initialize_and_allocate(type, CHECK_0); |
| if (box == NULL) return NULL; |
| switch (type) { |
| case T_BOOLEAN: |
| box->bool_field_put(value_offset, value->z); |
| break; |
| case T_CHAR: |
| box->char_field_put(value_offset, value->c); |
| break; |
| case T_FLOAT: |
| box->float_field_put(value_offset, value->f); |
| break; |
| case T_DOUBLE: |
| box->double_field_put(long_value_offset, value->d); |
| break; |
| case T_BYTE: |
| box->byte_field_put(value_offset, value->b); |
| break; |
| case T_SHORT: |
| box->short_field_put(value_offset, value->s); |
| break; |
| case T_INT: |
| box->int_field_put(value_offset, value->i); |
| break; |
| case T_LONG: |
| box->long_field_put(long_value_offset, value->j); |
| break; |
| default: |
| return NULL; |
| } |
| return box; |
| } |
| |
| |
| BasicType java_lang_boxing_object::basic_type(oop box) { |
| if (box == NULL) return T_ILLEGAL; |
| BasicType type = SystemDictionary::box_klass_type(box->klass()); |
| if (type == T_OBJECT) // 'unknown' value returned by SD::bkt |
| return T_ILLEGAL; |
| return type; |
| } |
| |
| |
| BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) { |
| BasicType type = SystemDictionary::box_klass_type(box->klass()); |
| switch (type) { |
| case T_BOOLEAN: |
| value->z = box->bool_field(value_offset); |
| break; |
| case T_CHAR: |
| value->c = box->char_field(value_offset); |
| break; |
| case T_FLOAT: |
| value->f = box->float_field(value_offset); |
| break; |
| case T_DOUBLE: |
| value->d = box->double_field(long_value_offset); |
| break; |
| case T_BYTE: |
| value->b = box->byte_field(value_offset); |
| break; |
| case T_SHORT: |
| value->s = box->short_field(value_offset); |
| break; |
| case T_INT: |
| value->i = box->int_field(value_offset); |
| break; |
| case T_LONG: |
| value->j = box->long_field(long_value_offset); |
| break; |
| default: |
| return T_ILLEGAL; |
| } // end switch |
| return type; |
| } |
| |
| |
| BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) { |
| BasicType type = SystemDictionary::box_klass_type(box->klass()); |
| switch (type) { |
| case T_BOOLEAN: |
| box->bool_field_put(value_offset, value->z); |
| break; |
| case T_CHAR: |
| box->char_field_put(value_offset, value->c); |
| break; |
| case T_FLOAT: |
| box->float_field_put(value_offset, value->f); |
| break; |
| case T_DOUBLE: |
| box->double_field_put(long_value_offset, value->d); |
| break; |
| case T_BYTE: |
| box->byte_field_put(value_offset, value->b); |
| break; |
| case T_SHORT: |
| box->short_field_put(value_offset, value->s); |
| break; |
| case T_INT: |
| box->int_field_put(value_offset, value->i); |
| break; |
| case T_LONG: |
| box->long_field_put(long_value_offset, value->j); |
| break; |
| default: |
| return T_ILLEGAL; |
| } // end switch |
| return type; |
| } |
| |
| |
| // Support for java_lang_ref_Reference |
| oop java_lang_ref_Reference::pending_list_lock() { |
| instanceKlass* ik = instanceKlass::cast(SystemDictionary::reference_klass()); |
| char *addr = (((char *)ik->start_of_static_fields()) + static_lock_offset); |
| if (UseCompressedOops) { |
| return oopDesc::load_decode_heap_oop((narrowOop *)addr); |
| } else { |
| return oopDesc::load_decode_heap_oop((oop*)addr); |
| } |
| } |
| |
| HeapWord *java_lang_ref_Reference::pending_list_addr() { |
| instanceKlass* ik = instanceKlass::cast(SystemDictionary::reference_klass()); |
| char *addr = (((char *)ik->start_of_static_fields()) + static_pending_offset); |
| // XXX This might not be HeapWord aligned, almost rather be char *. |
| return (HeapWord*)addr; |
| } |
| |
| oop java_lang_ref_Reference::pending_list() { |
| char *addr = (char *)pending_list_addr(); |
| if (UseCompressedOops) { |
| return oopDesc::load_decode_heap_oop((narrowOop *)addr); |
| } else { |
| return oopDesc::load_decode_heap_oop((oop*)addr); |
| } |
| } |
| |
| |
| // Support for java_lang_ref_SoftReference |
| |
| jlong java_lang_ref_SoftReference::timestamp(oop ref) { |
| return ref->long_field(timestamp_offset); |
| } |
| |
| jlong java_lang_ref_SoftReference::clock() { |
| instanceKlass* ik = instanceKlass::cast(SystemDictionary::soft_reference_klass()); |
| int offset = ik->offset_of_static_fields() + static_clock_offset; |
| |
| return SystemDictionary::soft_reference_klass()->long_field(offset); |
| } |
| |
| void java_lang_ref_SoftReference::set_clock(jlong value) { |
| instanceKlass* ik = instanceKlass::cast(SystemDictionary::soft_reference_klass()); |
| int offset = ik->offset_of_static_fields() + static_clock_offset; |
| |
| SystemDictionary::soft_reference_klass()->long_field_put(offset, value); |
| } |
| |
| |
| // Support for java_security_AccessControlContext |
| |
| int java_security_AccessControlContext::_context_offset = 0; |
| int java_security_AccessControlContext::_privilegedContext_offset = 0; |
| int java_security_AccessControlContext::_isPrivileged_offset = 0; |
| |
| |
| void java_security_AccessControlContext::compute_offsets() { |
| assert(_isPrivileged_offset == 0, "offsets should be initialized only once"); |
| fieldDescriptor fd; |
| instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass()); |
| |
| if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) { |
| fatal("Invalid layout of java.security.AccessControlContext"); |
| } |
| _context_offset = fd.offset(); |
| |
| if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) { |
| fatal("Invalid layout of java.security.AccessControlContext"); |
| } |
| _privilegedContext_offset = fd.offset(); |
| |
| if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) { |
| fatal("Invalid layout of java.security.AccessControlContext"); |
| } |
| _isPrivileged_offset = fd.offset(); |
| } |
| |
| |
| oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) { |
| assert(_isPrivileged_offset != 0, "offsets should have been initialized"); |
| // Ensure klass is initialized |
| instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0); |
| // Allocate result |
| oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0); |
| // Fill in values |
| result->obj_field_put(_context_offset, context()); |
| result->obj_field_put(_privilegedContext_offset, privileged_context()); |
| result->bool_field_put(_isPrivileged_offset, isPrivileged); |
| return result; |
| } |
| |
| |
| // Support for java_lang_ClassLoader |
| |
| oop java_lang_ClassLoader::parent(oop loader) { |
| assert(loader->is_oop(), "loader must be oop"); |
| return loader->obj_field(parent_offset); |
| } |
| |
| |
| bool java_lang_ClassLoader::is_trusted_loader(oop loader) { |
| // Fix for 4474172; see evaluation for more details |
| loader = non_reflection_class_loader(loader); |
| |
| oop cl = SystemDictionary::java_system_loader(); |
| while(cl != NULL) { |
| if (cl == loader) return true; |
| cl = parent(cl); |
| } |
| return false; |
| } |
| |
| oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) { |
| if (loader != NULL) { |
| // See whether this is one of the class loaders associated with |
| // the generated bytecodes for reflection, and if so, "magically" |
| // delegate to its parent to prevent class loading from occurring |
| // in places where applications using reflection didn't expect it. |
| klassOop delegating_cl_class = SystemDictionary::reflect_delegating_classloader_klass(); |
| // This might be null in non-1.4 JDKs |
| if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) { |
| return parent(loader); |
| } |
| } |
| return loader; |
| } |
| |
| |
| // Support for java_lang_System |
| |
| void java_lang_System::compute_offsets() { |
| assert(offset_of_static_fields == 0, "offsets should be initialized only once"); |
| |
| instanceKlass* ik = instanceKlass::cast(SystemDictionary::system_klass()); |
| offset_of_static_fields = ik->offset_of_static_fields(); |
| } |
| |
| int java_lang_System::in_offset_in_bytes() { |
| return (offset_of_static_fields + static_in_offset); |
| } |
| |
| |
| int java_lang_System::out_offset_in_bytes() { |
| return (offset_of_static_fields + static_out_offset); |
| } |
| |
| |
| int java_lang_System::err_offset_in_bytes() { |
| return (offset_of_static_fields + static_err_offset); |
| } |
| |
| |
| |
| int java_lang_String::value_offset; |
| int java_lang_String::offset_offset; |
| int java_lang_String::count_offset; |
| int java_lang_String::hash_offset; |
| int java_lang_Class::klass_offset; |
| int java_lang_Class::array_klass_offset; |
| int java_lang_Class::resolved_constructor_offset; |
| int java_lang_Class::number_of_fake_oop_fields; |
| int java_lang_Throwable::backtrace_offset; |
| int java_lang_Throwable::detailMessage_offset; |
| int java_lang_Throwable::cause_offset; |
| int java_lang_Throwable::stackTrace_offset; |
| int java_lang_reflect_AccessibleObject::override_offset; |
| int java_lang_reflect_Method::clazz_offset; |
| int java_lang_reflect_Method::name_offset; |
| int java_lang_reflect_Method::returnType_offset; |
| int java_lang_reflect_Method::parameterTypes_offset; |
| int java_lang_reflect_Method::exceptionTypes_offset; |
| int java_lang_reflect_Method::slot_offset; |
| int java_lang_reflect_Method::modifiers_offset; |
| int java_lang_reflect_Method::signature_offset; |
| int java_lang_reflect_Method::annotations_offset; |
| int java_lang_reflect_Method::parameter_annotations_offset; |
| int java_lang_reflect_Method::annotation_default_offset; |
| int java_lang_reflect_Constructor::clazz_offset; |
| int java_lang_reflect_Constructor::parameterTypes_offset; |
| int java_lang_reflect_Constructor::exceptionTypes_offset; |
| int java_lang_reflect_Constructor::slot_offset; |
| int java_lang_reflect_Constructor::modifiers_offset; |
| int java_lang_reflect_Constructor::signature_offset; |
| int java_lang_reflect_Constructor::annotations_offset; |
| int java_lang_reflect_Constructor::parameter_annotations_offset; |
| int java_lang_reflect_Field::clazz_offset; |
| int java_lang_reflect_Field::name_offset; |
| int java_lang_reflect_Field::type_offset; |
| int java_lang_reflect_Field::slot_offset; |
| int java_lang_reflect_Field::modifiers_offset; |
| int java_lang_reflect_Field::signature_offset; |
| int java_lang_reflect_Field::annotations_offset; |
| int java_lang_boxing_object::value_offset; |
| int java_lang_boxing_object::long_value_offset; |
| int java_lang_ref_Reference::referent_offset; |
| int java_lang_ref_Reference::queue_offset; |
| int java_lang_ref_Reference::next_offset; |
| int java_lang_ref_Reference::discovered_offset; |
| int java_lang_ref_Reference::static_lock_offset; |
| int java_lang_ref_Reference::static_pending_offset; |
| int java_lang_ref_Reference::number_of_fake_oop_fields; |
| int java_lang_ref_SoftReference::timestamp_offset; |
| int java_lang_ref_SoftReference::static_clock_offset; |
| int java_lang_ClassLoader::parent_offset; |
| int java_lang_System::offset_of_static_fields; |
| int java_lang_System::static_in_offset; |
| int java_lang_System::static_out_offset; |
| int java_lang_System::static_err_offset; |
| int java_lang_StackTraceElement::declaringClass_offset; |
| int java_lang_StackTraceElement::methodName_offset; |
| int java_lang_StackTraceElement::fileName_offset; |
| int java_lang_StackTraceElement::lineNumber_offset; |
| int java_lang_AssertionStatusDirectives::classes_offset; |
| int java_lang_AssertionStatusDirectives::classEnabled_offset; |
| int java_lang_AssertionStatusDirectives::packages_offset; |
| int java_lang_AssertionStatusDirectives::packageEnabled_offset; |
| int java_lang_AssertionStatusDirectives::deflt_offset; |
| int java_nio_Buffer::_limit_offset; |
| int sun_misc_AtomicLongCSImpl::_value_offset; |
| int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0; |
| int sun_reflect_ConstantPool::_cp_oop_offset; |
| int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset; |
| |
| |
| // Support for java_lang_StackTraceElement |
| |
| void java_lang_StackTraceElement::set_fileName(oop element, oop value) { |
| element->obj_field_put(fileName_offset, value); |
| } |
| |
| void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) { |
| element->obj_field_put(declaringClass_offset, value); |
| } |
| |
| void java_lang_StackTraceElement::set_methodName(oop element, oop value) { |
| element->obj_field_put(methodName_offset, value); |
| } |
| |
| void java_lang_StackTraceElement::set_lineNumber(oop element, int value) { |
| element->int_field_put(lineNumber_offset, value); |
| } |
| |
| |
| // Support for java Assertions - java_lang_AssertionStatusDirectives. |
| |
| void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) { |
| o->obj_field_put(classes_offset, val); |
| } |
| |
| void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) { |
| o->obj_field_put(classEnabled_offset, val); |
| } |
| |
| void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) { |
| o->obj_field_put(packages_offset, val); |
| } |
| |
| void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) { |
| o->obj_field_put(packageEnabled_offset, val); |
| } |
| |
| void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) { |
| o->bool_field_put(deflt_offset, val); |
| } |
| |
| |
| // Support for intrinsification of java.nio.Buffer.checkIndex |
| int java_nio_Buffer::limit_offset() { |
| return _limit_offset; |
| } |
| |
| |
| void java_nio_Buffer::compute_offsets() { |
| klassOop k = SystemDictionary::java_nio_Buffer_klass(); |
| assert(k != NULL, "must be loaded in 1.4+"); |
| compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature()); |
| } |
| |
| // Support for intrinsification of sun.misc.AtomicLongCSImpl.attemptUpdate |
| int sun_misc_AtomicLongCSImpl::value_offset() { |
| assert(SystemDictionary::sun_misc_AtomicLongCSImpl_klass() != NULL, "can't call this"); |
| return _value_offset; |
| } |
| |
| |
| void sun_misc_AtomicLongCSImpl::compute_offsets() { |
| klassOop k = SystemDictionary::sun_misc_AtomicLongCSImpl_klass(); |
| // If this class is not present, its value field offset won't be referenced. |
| if (k != NULL) { |
| compute_offset(_value_offset, k, vmSymbols::value_name(), vmSymbols::long_signature()); |
| } |
| } |
| |
| void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) { |
| if (_owner_offset != 0) return; |
| |
| assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later"); |
| SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK); |
| klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass(); |
| compute_offset(_owner_offset, k, |
| vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature()); |
| } |
| |
| oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) { |
| assert(_owner_offset != 0, "Must be initialized"); |
| return obj->obj_field(_owner_offset); |
| } |
| |
| // Compute hard-coded offsets |
| // Invoked before SystemDictionary::initialize, so pre-loaded classes |
| // are not available to determine the offset_of_static_fields. |
| void JavaClasses::compute_hard_coded_offsets() { |
| const int x = heapOopSize; |
| const int header = instanceOopDesc::base_offset_in_bytes(); |
| |
| // Do the String Class |
| java_lang_String::value_offset = java_lang_String::hc_value_offset * x + header; |
| java_lang_String::offset_offset = java_lang_String::hc_offset_offset * x + header; |
| java_lang_String::count_offset = java_lang_String::offset_offset + sizeof (jint); |
| java_lang_String::hash_offset = java_lang_String::count_offset + sizeof (jint); |
| |
| // Do the Class Class |
| java_lang_Class::klass_offset = java_lang_Class::hc_klass_offset * x + header; |
| java_lang_Class::array_klass_offset = java_lang_Class::hc_array_klass_offset * x + header; |
| java_lang_Class::resolved_constructor_offset = java_lang_Class::hc_resolved_constructor_offset * x + header; |
| |
| // This is NOT an offset |
| java_lang_Class::number_of_fake_oop_fields = java_lang_Class::hc_number_of_fake_oop_fields; |
| |
| // Throwable Class |
| java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header; |
| java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header; |
| java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header; |
| java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header; |
| |
| // java_lang_boxing_object |
| java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header; |
| java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong); |
| |
| // java_lang_ref_Reference: |
| java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header; |
| java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header; |
| java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header; |
| java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header; |
| java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x; |
| java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x; |
| // Artificial fields for java_lang_ref_Reference |
| // The first field is for the discovered field added in 1.4 |
| java_lang_ref_Reference::number_of_fake_oop_fields = 1; |
| |
| // java_lang_ref_SoftReference Class |
| java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong); |
| // Don't multiply static fields because they are always in wordSize units |
| java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x; |
| |
| // java_lang_ClassLoader |
| java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header; |
| |
| // java_lang_System |
| java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x; |
| java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x; |
| java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x; |
| |
| // java_lang_StackTraceElement |
| java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header; |
| java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header; |
| java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header; |
| java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header; |
| java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header; |
| java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header; |
| java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header; |
| java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header; |
| java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header; |
| |
| } |
| |
| |
| // Compute non-hard-coded field offsets of all the classes in this file |
| void JavaClasses::compute_offsets() { |
| |
| java_lang_Class::compute_offsets(); |
| java_lang_System::compute_offsets(); |
| java_lang_Thread::compute_offsets(); |
| java_lang_ThreadGroup::compute_offsets(); |
| java_security_AccessControlContext::compute_offsets(); |
| // Initialize reflection classes. The layouts of these classes |
| // changed with the new reflection implementation in JDK 1.4, and |
| // since the Universe doesn't know what JDK version it is until this |
| // point we defer computation of these offsets until now. |
| java_lang_reflect_AccessibleObject::compute_offsets(); |
| java_lang_reflect_Method::compute_offsets(); |
| java_lang_reflect_Constructor::compute_offsets(); |
| java_lang_reflect_Field::compute_offsets(); |
| if (JDK_Version::is_gte_jdk14x_version()) { |
| java_nio_Buffer::compute_offsets(); |
| } |
| if (JDK_Version::is_gte_jdk15x_version()) { |
| sun_reflect_ConstantPool::compute_offsets(); |
| sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets(); |
| } |
| sun_misc_AtomicLongCSImpl::compute_offsets(); |
| } |
| |
| #ifndef PRODUCT |
| |
| // These functions exist to assert the validity of hard-coded field offsets to guard |
| // against changes in the class files |
| |
| bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { |
| EXCEPTION_MARK; |
| fieldDescriptor fd; |
| symbolHandle klass_sym = oopFactory::new_symbol_handle(klass_name, CATCH); |
| klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); |
| instanceKlassHandle h_klass (THREAD, k); |
| //instanceKlassHandle h_klass(klass); |
| symbolHandle f_name = oopFactory::new_symbol_handle(field_name, CATCH); |
| symbolHandle f_sig = oopFactory::new_symbol_handle(field_sig, CATCH); |
| if (!h_klass->find_local_field(f_name(), f_sig(), &fd)) { |
| tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name); |
| return false; |
| } |
| if (fd.is_static()) { |
| tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name); |
| return false; |
| } |
| if (fd.offset() == hardcoded_offset ) { |
| return true; |
| } else { |
| tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.", |
| klass_name, field_name, hardcoded_offset, fd.offset()); |
| return false; |
| } |
| } |
| |
| |
| bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { |
| EXCEPTION_MARK; |
| fieldDescriptor fd; |
| symbolHandle klass_sym = oopFactory::new_symbol_handle(klass_name, CATCH); |
| klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); |
| instanceKlassHandle h_klass (THREAD, k); |
| symbolHandle f_name = oopFactory::new_symbol_handle(field_name, CATCH); |
| symbolHandle f_sig = oopFactory::new_symbol_handle(field_sig, CATCH); |
| if (!h_klass->find_local_field(f_name(), f_sig(), &fd)) { |
| tty->print_cr("Static field %s.%s not found", klass_name, field_name); |
| return false; |
| } |
| if (!fd.is_static()) { |
| tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name); |
| return false; |
| } |
| if (fd.offset() == hardcoded_offset + h_klass->offset_of_static_fields()) { |
| return true; |
| } else { |
| tty->print_cr("Offset of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_offset, fd.offset() - h_klass->offset_of_static_fields()); |
| return false; |
| } |
| } |
| |
| |
| bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) { |
| EXCEPTION_MARK; |
| fieldDescriptor fd; |
| symbolHandle klass_sym = oopFactory::new_symbol_handle(klass_name, CATCH); |
| klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); |
| instanceKlassHandle h_klass (THREAD, k); |
| symbolHandle f_name = oopFactory::new_symbol_handle(field_name, CATCH); |
| symbolHandle f_sig = oopFactory::new_symbol_handle(field_sig, CATCH); |
| if (!h_klass->find_local_field(f_name(), f_sig(), &fd)) { |
| tty->print_cr("Static field %s.%s not found", klass_name, field_name); |
| return false; |
| } |
| if (!fd.is_static() || !fd.has_initial_value()) { |
| tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name); |
| return false; |
| } |
| if (!fd.initial_value_tag().is_int()) { |
| tty->print_cr("Static field %s.%s is not an int", klass_name, field_name); |
| return false; |
| } |
| jint field_value = fd.int_initial_value(); |
| if (field_value == hardcoded_constant) { |
| return true; |
| } else { |
| tty->print_cr("Constant value of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_constant, field_value); |
| return false; |
| } |
| } |
| |
| |
| // Check the hard-coded field offsets of all the classes in this file |
| |
| void JavaClasses::check_offsets() { |
| bool valid = true; |
| |
| #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ |
| valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig) |
| |
| #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ |
| valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig) |
| |
| #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ |
| valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig) |
| |
| #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \ |
| valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig) |
| |
| // java.lang.String |
| |
| CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C"); |
| CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I"); |
| CHECK_OFFSET("java/lang/String", java_lang_String, count, "I"); |
| CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I"); |
| |
| // java.lang.Class |
| |
| // Fake fields |
| // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked |
| // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked |
| // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked |
| |
| // java.lang.Throwable |
| |
| CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;"); |
| CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;"); |
| CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;"); |
| CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;"); |
| |
| // Boxed primitive objects (java_lang_boxing_object) |
| |
| CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z"); |
| CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C"); |
| CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F"); |
| CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D"); |
| CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B"); |
| CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S"); |
| CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I"); |
| CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J"); |
| |
| // java.lang.ClassLoader |
| |
| CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;"); |
| |
| // java.lang.System |
| |
| CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;"); |
| CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;"); |
| CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;"); |
| |
| // java.lang.StackTraceElement |
| |
| CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;"); |
| CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;"); |
| CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;"); |
| CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I"); |
| |
| // java.lang.ref.Reference |
| |
| CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;"); |
| CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;"); |
| CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;"); |
| // Fake field |
| //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;"); |
| CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;"); |
| CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;"); |
| |
| // java.lang.ref.SoftReference |
| |
| CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J"); |
| CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J"); |
| |
| // java.lang.AssertionStatusDirectives |
| // |
| // The CheckAssertionStatusDirectives boolean can be removed from here and |
| // globals.hpp after the AssertionStatusDirectives class has been integrated |
| // into merlin "for some time." Without it, the vm will fail with early |
| // merlin builds. |
| |
| if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) { |
| const char* nm = "java/lang/AssertionStatusDirectives"; |
| const char* sig = "[Ljava/lang/String;"; |
| CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig); |
| CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z"); |
| CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig); |
| CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z"); |
| CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z"); |
| } |
| |
| if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed"); |
| } |
| |
| #endif // PRODUCT |
| |
| void javaClasses_init() { |
| JavaClasses::compute_offsets(); |
| JavaClasses::check_offsets(); |
| FilteredFieldsMap::initialize(); // must be done after computing offsets. |
| } |