Mercurial > hg > truffle
diff src/share/vm/classfile/javaClasses.cpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 90f5ddc7297b |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/classfile/javaClasses.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,2515 @@ +/* + * 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 macro for computing field offsets at run time rather than hardcoding them +#define COMPUTE_OFFSET(klass_name_as_C_str, dest_offset, klass_oop, name_symbol, signature_symbol) \ +{ \ + fieldDescriptor fd; \ + instanceKlass* ik = instanceKlass::cast(klass_oop); \ + if (!ik->find_local_field(name_symbol, signature_symbol, &fd)) { \ + fatal("Invalid layout of " klass_name_as_C_str); \ + } \ + dest_offset = fd.offset(); \ +} + +// Same as above but for "optional" offsets that might not be present in certain JDK versions +#define COMPUTE_OPTIONAL_OFFSET(klass_name_as_C_str, dest_offset, klass_oop, name_symbol, 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"); + ThreadToNativeFromVM ttn(thread); + HandleMark hm(thread); + js = (_to_java_string_fn)(thread->jni_environment(), str); + } + return Handle(THREAD, JNIHandles::resolve(js)); +} + +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("java.lang.Class", 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("java.lang.Thread", _name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature()); + COMPUTE_OFFSET("java.lang.Thread", _group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature()); + COMPUTE_OFFSET("java.lang.Thread", _contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature()); + COMPUTE_OFFSET("java.lang.Thread", _inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature()); + COMPUTE_OFFSET("java.lang.Thread", _priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature()); + COMPUTE_OFFSET("java.lang.Thread", _daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); + COMPUTE_OFFSET("java.lang.Thread", _eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature()); + COMPUTE_OFFSET("java.lang.Thread", _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("java.lang.Thread", _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("java.lang.Thread", _tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature()); + COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _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("java.lang.Thread", _park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature()); + COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _park_event_offset, k, vmSymbols::park_event_name(), + vmSymbols::long_signature()); +} + + +JavaThread* java_lang_Thread::thread(oop java_thread) { + return (JavaThread*) java_thread->obj_field(_eetop_offset); +} + + +void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) { + // We are storing a JavaThread* (malloc'ed data) into a long field in the thread + // object. The store has to be 64-bit wide so we use a pointer store, but we + // cannot call oopDesc::obj_field_put since it includes a write barrier! + oop* addr = java_thread->obj_field_addr(_eetop_offset); + *addr = (oop) 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("java.lang.ThreadGroup", _parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature()); + COMPUTE_OFFSET("java.lang.ThreadGroup", _name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); + COMPUTE_OFFSET("java.lang.ThreadGroup", _threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature()); + COMPUTE_OFFSET("java.lang.ThreadGroup", _groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature()); + COMPUTE_OFFSET("java.lang.ThreadGroup", _maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature()); + COMPUTE_OFFSET("java.lang.ThreadGroup", _destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature()); + COMPUTE_OFFSET("java.lang.ThreadGroup", _daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); + COMPUTE_OFFSET("java.lang.ThreadGroup", _vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature()); + COMPUTE_OFFSET("java.lang.ThreadGroup", _nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature()); + COMPUTE_OFFSET("java.lang.ThreadGroup", _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; + bool _done; + 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) { + expand(CHECK); + _backtrace = _head; + _index = 0; + _dirty = false; + _done = false; + } + + 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->obj_at_addr(0), + _methods->length() * HeapWordsPerOop)); + _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); + *_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(); + 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("java.lang.reflect.AccessibleObject", 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("java.lang.reflect.Method", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); + COMPUTE_OFFSET("java.lang.reflect.Method", name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); + COMPUTE_OFFSET("java.lang.reflect.Method", returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature()); + COMPUTE_OFFSET("java.lang.reflect.Method", parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); + COMPUTE_OFFSET("java.lang.reflect.Method", exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); + COMPUTE_OFFSET("java.lang.reflect.Method", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); + COMPUTE_OFFSET("java.lang.reflect.Method", 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("java.lang.reflect.Method", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); + COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); + COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); + COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", 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("java.lang.reflect.Constructor", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); + COMPUTE_OFFSET("java.lang.reflect.Constructor", parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); + COMPUTE_OFFSET("java.lang.reflect.Constructor", exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); + COMPUTE_OFFSET("java.lang.reflect.Constructor", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); + COMPUTE_OFFSET("java.lang.reflect.Constructor", 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("java.lang.reflect.Constructor", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); + COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Constructor", annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); + COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Constructor", 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("java.lang.reflect.Field", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); + COMPUTE_OFFSET("java.lang.reflect.Field", name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); + COMPUTE_OFFSET("java.lang.reflect.Field", type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature()); + COMPUTE_OFFSET("java.lang.reflect.Field", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); + COMPUTE_OFFSET("java.lang.reflect.Field", 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("java.lang.reflect.Field", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); + COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Field", 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("sun.reflect.ConstantPool", _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("sun.reflect.UnsafeStaticFieldAccessorImpl", _base_offset, k, + vmSymbols::base_name(), vmSymbols::object_signature()); + } +} + +oop java_lang_boxing_object::initialize_and_allocate(klassOop k, TRAPS) { + 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; + switch (type) { + case T_BOOLEAN: + box = initialize_and_allocate(SystemDictionary::boolean_klass(), CHECK_0); + box->bool_field_put(value_offset, value->z); + break; + case T_CHAR: + box = initialize_and_allocate(SystemDictionary::char_klass(), CHECK_0); + box->char_field_put(value_offset, value->c); + break; + case T_FLOAT: + box = initialize_and_allocate(SystemDictionary::float_klass(), CHECK_0); + box->float_field_put(value_offset, value->f); + break; + case T_DOUBLE: + box = initialize_and_allocate(SystemDictionary::double_klass(), CHECK_0); + box->double_field_put(value_offset, value->d); + break; + case T_BYTE: + box = initialize_and_allocate(SystemDictionary::byte_klass(), CHECK_0); + box->byte_field_put(value_offset, value->b); + break; + case T_SHORT: + box = initialize_and_allocate(SystemDictionary::short_klass(), CHECK_0); + box->short_field_put(value_offset, value->s); + break; + case T_INT: + box = initialize_and_allocate(SystemDictionary::int_klass(), CHECK_0); + box->int_field_put(value_offset, value->i); + break; + case T_LONG: + box = initialize_and_allocate(SystemDictionary::long_klass(), CHECK_0); + box->long_field_put(value_offset, value->j); + break; + default: + return NULL; + } + return box; +} + + +BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) { + klassOop k = box->klass(); + if (k == SystemDictionary::boolean_klass()) { + value->z = box->bool_field(value_offset); + return T_BOOLEAN; + } + if (k == SystemDictionary::char_klass()) { + value->c = box->char_field(value_offset); + return T_CHAR; + } + if (k == SystemDictionary::float_klass()) { + value->f = box->float_field(value_offset); + return T_FLOAT; + } + if (k == SystemDictionary::double_klass()) { + value->d = box->double_field(value_offset); + return T_DOUBLE; + } + if (k == SystemDictionary::byte_klass()) { + value->b = box->byte_field(value_offset); + return T_BYTE; + } + if (k == SystemDictionary::short_klass()) { + value->s = box->short_field(value_offset); + return T_SHORT; + } + if (k == SystemDictionary::int_klass()) { + value->i = box->int_field(value_offset); + return T_INT; + } + if (k == SystemDictionary::long_klass()) { + value->j = box->long_field(value_offset); + return T_LONG; + } + return T_ILLEGAL; +} + + +BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) { + klassOop k = box->klass(); + if (k == SystemDictionary::boolean_klass()) { + box->bool_field_put(value_offset, value->z); + return T_BOOLEAN; + } + if (k == SystemDictionary::char_klass()) { + box->char_field_put(value_offset, value->c); + return T_CHAR; + } + if (k == SystemDictionary::float_klass()) { + box->float_field_put(value_offset, value->f); + return T_FLOAT; + } + if (k == SystemDictionary::double_klass()) { + box->double_field_put(value_offset, value->d); + return T_DOUBLE; + } + if (k == SystemDictionary::byte_klass()) { + box->byte_field_put(value_offset, value->b); + return T_BYTE; + } + if (k == SystemDictionary::short_klass()) { + box->short_field_put(value_offset, value->s); + return T_SHORT; + } + if (k == SystemDictionary::int_klass()) { + box->int_field_put(value_offset, value->i); + return T_INT; + } + if (k == SystemDictionary::long_klass()) { + box->long_field_put(value_offset, value->j); + return T_LONG; + } + return T_ILLEGAL; +} + + +// Support for java_lang_ref_Reference + +void java_lang_ref_Reference::set_referent(oop ref, oop value) { + ref->obj_field_put(referent_offset, value); +} + +oop* java_lang_ref_Reference::referent_addr(oop ref) { + return ref->obj_field_addr(referent_offset); +} + +void java_lang_ref_Reference::set_next(oop ref, oop value) { + ref->obj_field_put(next_offset, value); +} + +oop* java_lang_ref_Reference::next_addr(oop ref) { + return ref->obj_field_addr(next_offset); +} + +void java_lang_ref_Reference::set_discovered(oop ref, oop value) { + ref->obj_field_put(discovered_offset, value); +} + +oop* java_lang_ref_Reference::discovered_addr(oop ref) { + return ref->obj_field_addr(discovered_offset); +} + +oop* java_lang_ref_Reference::pending_list_lock_addr() { + instanceKlass* ik = instanceKlass::cast(SystemDictionary::reference_klass()); + return (oop*)(((char *)ik->start_of_static_fields()) + static_lock_offset); +} + +oop* java_lang_ref_Reference::pending_list_addr() { + instanceKlass* ik = instanceKlass::cast(SystemDictionary::reference_klass()); + return (oop *)(((char *)ik->start_of_static_fields()) + static_pending_offset); +} + + +// 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_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(); + COMPUTE_OFFSET("java.nio.Buffer", _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("sun.misc.AtomicLongCSImpl", _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("java.util.concurrent.locks.AbstractOwnableSynchronizer", _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 = wordSize; + const int header = instanceOopDesc::header_size_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 * x + header; + + // 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 = java_lang_ref_SoftReference::hc_timestamp_offset * x + header; + // 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; + } +} + + +// 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_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) + + // 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_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_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. +}