--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/classfile/javaClasses.cpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,4125 @@
+/*
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "classfile/altHashing.hpp"
+#include "classfile/classLoaderData.inline.hpp"
+#include "classfile/javaClasses.inline.hpp"
+#include "classfile/moduleEntry.hpp"
+#include "classfile/stringTable.hpp"
+#include "classfile/vmSymbols.hpp"
+#include "code/debugInfo.hpp"
+#include "code/dependencyContext.hpp"
+#include "code/pcDesc.hpp"
+#include "interpreter/interpreter.hpp"
+#include "memory/oopFactory.hpp"
+#include "memory/resourceArea.hpp"
+#include "memory/universe.inline.hpp"
+#include "oops/fieldStreams.hpp"
+#include "oops/instanceKlass.hpp"
+#include "oops/instanceMirrorKlass.hpp"
+#include "oops/klass.hpp"
+#include "oops/method.hpp"
+#include "oops/objArrayOop.inline.hpp"
+#include "oops/oop.inline.hpp"
+#include "oops/symbol.hpp"
+#include "oops/typeArrayOop.hpp"
+#include "prims/resolvedMethodTable.hpp"
+#include "runtime/fieldDescriptor.hpp"
+#include "runtime/handles.inline.hpp"
+#include "runtime/interfaceSupport.hpp"
+#include "runtime/java.hpp"
+#include "runtime/javaCalls.hpp"
+#include "runtime/safepoint.hpp"
+#include "runtime/thread.inline.hpp"
+#include "runtime/vframe.hpp"
+#include "utilities/align.hpp"
+#include "utilities/preserveException.hpp"
+
+#if INCLUDE_JVMCI
+#include "jvmci/jvmciJavaClasses.hpp"
+#endif
+
+#define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
+ klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
+
+#define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
+ { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
+
+InjectedField JavaClasses::_injected_fields[] = {
+ ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
+};
+
+int JavaClasses::compute_injected_offset(InjectedFieldID id) {
+ return _injected_fields[id].compute_offset();
+}
+
+
+InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
+ *field_count = 0;
+
+ vmSymbols::SID sid = vmSymbols::find_sid(class_name);
+ if (sid == vmSymbols::NO_SID) {
+ // Only well known classes can inject fields
+ return NULL;
+ }
+
+ int count = 0;
+ int start = -1;
+
+#define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
+ if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
+ count++; \
+ if (start == -1) start = klass##_##name##_enum; \
+ }
+ ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
+#undef LOOKUP_INJECTED_FIELD
+
+ if (start != -1) {
+ *field_count = count;
+ return _injected_fields + start;
+ }
+ return NULL;
+}
+
+
+static bool find_field(InstanceKlass* ik,
+ Symbol* name_symbol, Symbol* signature_symbol,
+ fieldDescriptor* fd,
+ bool is_static = false, bool allow_super = false) {
+ if (allow_super || is_static) {
+ return ik->find_field(name_symbol, signature_symbol, is_static, fd) != NULL;
+ } else {
+ return ik->find_local_field(name_symbol, signature_symbol, fd);
+ }
+}
+
+// Helpful routine for computing field offsets at run time rather than hardcoding them
+static void
+compute_offset(int &dest_offset,
+ Klass* klass, Symbol* name_symbol, Symbol* signature_symbol,
+ bool is_static = false, bool allow_super = false) {
+ fieldDescriptor fd;
+ InstanceKlass* ik = InstanceKlass::cast(klass);
+ if (!find_field(ik, name_symbol, signature_symbol, &fd, is_static, allow_super)) {
+ ResourceMark rm;
+ tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
+#ifndef PRODUCT
+ ik->print();
+ tty->print_cr("all fields:");
+ for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
+ tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
+ }
+#endif //PRODUCT
+ vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
+ }
+ dest_offset = fd.offset();
+}
+
+// Same as above but for "optional" offsets that might not be present in certain JDK versions
+static void
+compute_optional_offset(int& dest_offset,
+ Klass* klass, Symbol* name_symbol, Symbol* signature_symbol,
+ bool allow_super = false) {
+ fieldDescriptor fd;
+ InstanceKlass* ik = InstanceKlass::cast(klass);
+ if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
+ dest_offset = fd.offset();
+ }
+}
+
+
+int java_lang_String::value_offset = 0;
+int java_lang_String::hash_offset = 0;
+int java_lang_String::coder_offset = 0;
+
+bool java_lang_String::initialized = false;
+
+bool java_lang_String::is_instance(oop obj) {
+ return is_instance_inlined(obj);
+}
+
+void java_lang_String::compute_offsets() {
+ assert(!initialized, "offsets should be initialized only once");
+
+ Klass* k = SystemDictionary::String_klass();
+ compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::byte_array_signature());
+ compute_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
+ compute_offset(coder_offset, k, vmSymbols::coder_name(), vmSymbols::byte_signature());
+
+ initialized = true;
+}
+
+class CompactStringsFixup : public FieldClosure {
+private:
+ bool _value;
+
+public:
+ CompactStringsFixup(bool value) : _value(value) {}
+
+ void do_field(fieldDescriptor* fd) {
+ if (fd->name() == vmSymbols::compact_strings_name()) {
+ oop mirror = fd->field_holder()->java_mirror();
+ assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
+ assert(mirror != NULL, "String must have mirror already");
+ mirror->bool_field_put(fd->offset(), _value);
+ }
+ }
+};
+
+void java_lang_String::set_compact_strings(bool value) {
+ CompactStringsFixup fix(value);
+ InstanceKlass::cast(SystemDictionary::String_klass())->do_local_static_fields(&fix);
+}
+
+Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
+ assert(initialized, "Must be initialized");
+ assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
+
+ // 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;
+ obj = 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);
+ int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
+ typeArrayOop buffer = oopFactory::new_byteArray(arr_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
+ set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
+ return h_obj;
+}
+
+Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
+ bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
+ Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
+ typeArrayOop buffer = value(h_obj());
+ assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
+ if (is_latin1) {
+ for (int index = 0; index < length; index++) {
+ buffer->byte_at_put(index, (jbyte)unicode[index]);
+ }
+ } else {
+ for (int index = 0; index < length; index++) {
+ buffer->char_at_put(index, unicode[index]);
+ }
+ }
+
+#ifdef ASSERT
+ {
+ ResourceMark rm;
+ char* expected = UNICODE::as_utf8(unicode, length);
+ char* actual = as_utf8_string(h_obj());
+ if (strcmp(expected, actual) != 0) {
+ tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
+ ShouldNotReachHere();
+ }
+ }
+#endif
+
+ return h_obj;
+}
+
+oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
+ Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
+ return h_obj();
+}
+
+Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
+ if (utf8_str == NULL) {
+ return Handle();
+ }
+ bool has_multibyte, is_latin1;
+ int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
+ if (!CompactStrings) {
+ has_multibyte = true;
+ is_latin1 = false;
+ }
+
+ Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
+ if (length > 0) {
+ if (!has_multibyte) {
+ strncpy((char*)value(h_obj())->byte_at_addr(0), utf8_str, length);
+ } else if (is_latin1) {
+ UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
+ } else {
+ UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
+ }
+ }
+
+#ifdef ASSERT
+ // This check is too strict because the input string is not necessarily valid UTF8.
+ // For example, it may be created with arbitrary content via jni_NewStringUTF.
+ /*
+ {
+ ResourceMark rm;
+ const char* expected = utf8_str;
+ char* actual = as_utf8_string(h_obj());
+ if (strcmp(expected, actual) != 0) {
+ tty->print_cr("String conversion failure: %s --> %s", expected, actual);
+ ShouldNotReachHere();
+ }
+ }
+ */
+#endif
+
+ 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(Symbol* symbol, TRAPS) {
+ const char* utf8_str = (char*)symbol->bytes();
+ int utf8_len = symbol->utf8_length();
+
+ bool has_multibyte, is_latin1;
+ int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
+ if (!CompactStrings) {
+ has_multibyte = true;
+ is_latin1 = false;
+ }
+
+ Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
+ if (length > 0) {
+ if (!has_multibyte) {
+ strncpy((char*)value(h_obj())->byte_at_addr(0), utf8_str, length);
+ } else if (is_latin1) {
+ UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
+ } else {
+ UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
+ }
+ }
+
+#ifdef ASSERT
+ {
+ ResourceMark rm;
+ const char* expected = symbol->as_utf8();
+ char* actual = as_utf8_string(h_obj());
+ if (strncmp(expected, actual, utf8_len) != 0) {
+ tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
+ ShouldNotReachHere();
+ }
+ }
+#endif
+
+ 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, os::dll_lookup(lib_handle, "NewStringPlatform"));
+ if (_to_java_string_fn == NULL) {
+ fatal("NewStringPlatform missing");
+ }
+ }
+
+ jstring js = NULL;
+ { JavaThread* thread = (JavaThread*)THREAD;
+ assert(thread->is_Java_thread(), "must be java thread");
+ HandleMark hm(thread);
+ ThreadToNativeFromVM ttn(thread);
+ js = (_to_java_string_fn)(thread->jni_environment(), str);
+ }
+ return Handle(THREAD, JNIHandles::resolve(js));
+}
+
+// Converts a Java String to a native C string that can be used for
+// native OS calls.
+char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
+ typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
+ static to_platform_string_fn_t _to_platform_string_fn = NULL;
+
+ if (_to_platform_string_fn == NULL) {
+ void *lib_handle = os::native_java_library();
+ _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
+ if (_to_platform_string_fn == NULL) {
+ fatal("GetStringPlatformChars missing");
+ }
+ }
+
+ char *native_platform_string;
+ { JavaThread* thread = (JavaThread*)THREAD;
+ assert(thread->is_Java_thread(), "must be java thread");
+ JNIEnv *env = thread->jni_environment();
+ jstring js = (jstring) JNIHandles::make_local(env, java_string());
+ bool is_copy;
+ HandleMark hm(thread);
+ ThreadToNativeFromVM ttn(thread);
+ native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
+ assert(is_copy == JNI_TRUE, "is_copy value changed");
+ JNIHandles::destroy_local(js);
+ }
+ return native_platform_string;
+}
+
+Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
+ oop obj = java_string();
+ // Typical usage is to convert all '/' to '.' in string.
+ typeArrayOop value = java_lang_String::value(obj);
+ int length = java_lang_String::length(obj);
+ bool is_latin1 = java_lang_String::is_latin1(obj);
+
+ // First check if any from_char exist
+ int index; // Declared outside, used later
+ for (index = 0; index < length; index++) {
+ jchar c = !is_latin1 ? value->char_at(index) :
+ ((jchar) value->byte_at(index)) & 0xff;
+ if (c == from_char) {
+ break;
+ }
+ }
+ if (index == length) {
+ // No from_char, so do not copy.
+ return java_string;
+ }
+
+ // Check if result string will be latin1
+ bool to_is_latin1 = false;
+
+ // Replacement char must be latin1
+ if (CompactStrings && UNICODE::is_latin1(to_char)) {
+ if (is_latin1) {
+ // Source string is latin1 as well
+ to_is_latin1 = true;
+ } else if (!UNICODE::is_latin1(from_char)) {
+ // We are replacing an UTF16 char. Scan string to
+ // check if result can be latin1 encoded.
+ to_is_latin1 = true;
+ for (index = 0; index < length; index++) {
+ jchar c = value->char_at(index);
+ if (c != from_char && !UNICODE::is_latin1(c)) {
+ to_is_latin1 = false;
+ break;
+ }
+ }
+ }
+ }
+
+ // Create new UNICODE (or byte) buffer. Must handlize value because GC
+ // may happen during String and char array creation.
+ typeArrayHandle h_value(THREAD, value);
+ Handle string = basic_create(length, to_is_latin1, 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 = (!is_latin1) ? from_buffer->char_at(index) :
+ ((jchar) from_buffer->byte_at(index)) & 0xff;
+ if (c == from_char) {
+ c = to_char;
+ }
+ if (!to_is_latin1) {
+ to_buffer->char_at_put(index, c);
+ } else {
+ to_buffer->byte_at_put(index, (jbyte) c);
+ }
+ }
+ return string;
+}
+
+jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
+ typeArrayOop value = java_lang_String::value(java_string);
+ length = java_lang_String::length(java_string);
+ bool is_latin1 = java_lang_String::is_latin1(java_string);
+
+ jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
+ if (result != NULL) {
+ if (!is_latin1) {
+ for (int index = 0; index < length; index++) {
+ result[index] = value->char_at(index);
+ }
+ } else {
+ for (int index = 0; index < length; index++) {
+ result[index] = ((jchar) value->byte_at(index)) & 0xff;
+ }
+ }
+ } else {
+ THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
+ }
+ return result;
+}
+
+unsigned int java_lang_String::hash_code(oop java_string) {
+ int length = java_lang_String::length(java_string);
+ // Zero length string will hash to zero with String.hashCode() function.
+ if (length == 0) return 0;
+
+ typeArrayOop value = java_lang_String::value(java_string);
+ bool is_latin1 = java_lang_String::is_latin1(java_string);
+
+ if (is_latin1) {
+ return java_lang_String::hash_code(value->byte_at_addr(0), length);
+ } else {
+ return java_lang_String::hash_code(value->char_at_addr(0), length);
+ }
+}
+
+char* java_lang_String::as_quoted_ascii(oop java_string) {
+ typeArrayOop value = java_lang_String::value(java_string);
+ int length = java_lang_String::length(java_string);
+ bool is_latin1 = java_lang_String::is_latin1(java_string);
+
+ if (length == 0) return NULL;
+
+ char* result;
+ int result_length;
+ if (!is_latin1) {
+ jchar* base = value->char_at_addr(0);
+ result_length = UNICODE::quoted_ascii_length(base, length) + 1;
+ result = NEW_RESOURCE_ARRAY(char, result_length);
+ UNICODE::as_quoted_ascii(base, length, result, result_length);
+ } else {
+ jbyte* base = value->byte_at_addr(0);
+ result_length = UNICODE::quoted_ascii_length(base, length) + 1;
+ result = NEW_RESOURCE_ARRAY(char, result_length);
+ UNICODE::as_quoted_ascii(base, length, result, result_length);
+ }
+ assert(result_length >= length + 1, "must not be shorter");
+ assert(result_length == (int)strlen(result) + 1, "must match");
+ return result;
+}
+
+Symbol* java_lang_String::as_symbol(oop java_string, TRAPS) {
+ typeArrayOop value = java_lang_String::value(java_string);
+ int length = java_lang_String::length(java_string);
+ bool is_latin1 = java_lang_String::is_latin1(java_string);
+ if (!is_latin1) {
+ jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
+ Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
+ return sym;
+ } else {
+ ResourceMark rm;
+ jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
+ const char* base = UNICODE::as_utf8(position, length);
+ Symbol* sym = SymbolTable::lookup(base, length, THREAD);
+ return sym;
+ }
+}
+
+Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
+ typeArrayOop value = java_lang_String::value(java_string);
+ int length = java_lang_String::length(java_string);
+ bool is_latin1 = java_lang_String::is_latin1(java_string);
+ if (!is_latin1) {
+ jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
+ return SymbolTable::probe_unicode(base, length);
+ } else {
+ ResourceMark rm;
+ jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
+ const char* base = UNICODE::as_utf8(position, length);
+ return SymbolTable::probe(base, length);
+ }
+}
+
+int java_lang_String::utf8_length(oop java_string) {
+ typeArrayOop value = java_lang_String::value(java_string);
+ int length = java_lang_String::length(java_string);
+ bool is_latin1 = java_lang_String::is_latin1(java_string);
+ if (length == 0) {
+ return 0;
+ }
+ if (!is_latin1) {
+ return UNICODE::utf8_length(value->char_at_addr(0), length);
+ } else {
+ return UNICODE::utf8_length(value->byte_at_addr(0), length);
+ }
+}
+
+char* java_lang_String::as_utf8_string(oop java_string) {
+ typeArrayOop value = java_lang_String::value(java_string);
+ int length = java_lang_String::length(java_string);
+ bool is_latin1 = java_lang_String::is_latin1(java_string);
+ if (!is_latin1) {
+ jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
+ return UNICODE::as_utf8(position, length);
+ } else {
+ jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
+ return UNICODE::as_utf8(position, length);
+ }
+}
+
+char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
+ typeArrayOop value = java_lang_String::value(java_string);
+ int length = java_lang_String::length(java_string);
+ bool is_latin1 = java_lang_String::is_latin1(java_string);
+ if (!is_latin1) {
+ jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
+ return UNICODE::as_utf8(position, length, buf, buflen);
+ } else {
+ jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
+ return UNICODE::as_utf8(position, length, buf, buflen);
+ }
+}
+
+char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
+ typeArrayOop value = java_lang_String::value(java_string);
+ int length = java_lang_String::length(java_string);
+ assert(start + len <= length, "just checking");
+ bool is_latin1 = java_lang_String::is_latin1(java_string);
+ if (!is_latin1) {
+ jchar* position = value->char_at_addr(start);
+ return UNICODE::as_utf8(position, len);
+ } else {
+ jbyte* position = value->byte_at_addr(start);
+ return UNICODE::as_utf8(position, len);
+ }
+}
+
+char* java_lang_String::as_utf8_string(oop java_string, int start, int len, char* buf, int buflen) {
+ typeArrayOop value = java_lang_String::value(java_string);
+ int length = java_lang_String::length(java_string);
+ assert(start + len <= length, "just checking");
+ bool is_latin1 = java_lang_String::is_latin1(java_string);
+ if (!is_latin1) {
+ jchar* position = value->char_at_addr(start);
+ return UNICODE::as_utf8(position, len, buf, buflen);
+ } else {
+ jbyte* position = value->byte_at_addr(start);
+ return UNICODE::as_utf8(position, len, buf, buflen);
+ }
+}
+
+bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
+ assert(java_string->klass() == SystemDictionary::String_klass(),
+ "must be java_string");
+ typeArrayOop value = java_lang_String::value(java_string);
+ int length = java_lang_String::length(java_string);
+ if (length != len) {
+ return false;
+ }
+ bool is_latin1 = java_lang_String::is_latin1(java_string);
+ if (!is_latin1) {
+ for (int i = 0; i < len; i++) {
+ if (value->char_at(i) != chars[i]) {
+ return false;
+ }
+ }
+ } else {
+ for (int i = 0; i < len; i++) {
+ if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
+ return false;
+ }
+ }
+ }
+ return true;
+}
+
+bool java_lang_String::equals(oop str1, oop str2) {
+ assert(str1->klass() == SystemDictionary::String_klass(),
+ "must be java String");
+ assert(str2->klass() == SystemDictionary::String_klass(),
+ "must be java String");
+ typeArrayOop value1 = java_lang_String::value(str1);
+ int length1 = java_lang_String::length(str1);
+ bool is_latin1 = java_lang_String::is_latin1(str1);
+ typeArrayOop value2 = java_lang_String::value(str2);
+ int length2 = java_lang_String::length(str2);
+ bool is_latin2 = java_lang_String::is_latin1(str2);
+
+ if ((length1 != length2) || (is_latin1 != is_latin2)) {
+ // Strings of different size or with different
+ // coders are never equal.
+ return false;
+ }
+ int blength1 = value1->length();
+ for (int i = 0; i < value1->length(); i++) {
+ if (value1->byte_at(i) != value2->byte_at(i)) {
+ return false;
+ }
+ }
+ return true;
+}
+
+void java_lang_String::print(oop java_string, outputStream* st) {
+ assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
+ typeArrayOop value = java_lang_String::value(java_string);
+
+ if (value == NULL) {
+ // This can happen if, e.g., printing a String
+ // object before its initializer has been called
+ st->print("NULL");
+ return;
+ }
+
+ int length = java_lang_String::length(java_string);
+ bool is_latin1 = java_lang_String::is_latin1(java_string);
+
+ st->print("\"");
+ for (int index = 0; index < length; index++) {
+ st->print("%c", (!is_latin1) ? value->char_at(index) :
+ ((jchar) value->byte_at(index)) & 0xff );
+ }
+ st->print("\"");
+}
+
+
+static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
+ assert(mirror.not_null() && fd->is_static(), "just checking");
+ if (fd->has_initial_value()) {
+ BasicType t = fd->field_type();
+ switch (t) {
+ case T_BYTE:
+ mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
+ break;
+ case T_BOOLEAN:
+ mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
+ break;
+ case T_CHAR:
+ mirror()->char_field_put(fd->offset(), fd->int_initial_value());
+ break;
+ case T_SHORT:
+ mirror()->short_field_put(fd->offset(), fd->int_initial_value());
+ break;
+ case T_INT:
+ mirror()->int_field_put(fd->offset(), fd->int_initial_value());
+ break;
+ case T_FLOAT:
+ mirror()->float_field_put(fd->offset(), fd->float_initial_value());
+ break;
+ case T_DOUBLE:
+ mirror()->double_field_put(fd->offset(), fd->double_initial_value());
+ break;
+ case T_LONG:
+ mirror()->long_field_put(fd->offset(), fd->long_initial_value());
+ break;
+ case T_OBJECT:
+ {
+ #ifdef ASSERT
+ TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
+ assert(fd->signature() == sym, "just checking");
+ #endif
+ oop string = fd->string_initial_value(CHECK);
+ mirror()->obj_field_put(fd->offset(), string);
+ }
+ break;
+ default:
+ THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
+ "Illegal ConstantValue attribute in class file");
+ }
+ }
+}
+
+
+void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
+ assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
+
+ // If the offset was read from the shared archive, it was fixed up already
+ if (!k->is_shared()) {
+ if (k->is_instance_klass()) {
+ // During bootstrap, java.lang.Class wasn't loaded so static field
+ // offsets were computed without the size added it. Go back and
+ // update all the static field offsets to included the size.
+ for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
+ if (fs.access_flags().is_static()) {
+ int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
+ fs.set_offset(real_offset);
+ }
+ }
+ }
+ }
+ create_mirror(k, Handle(), Handle(), Handle(), CHECK);
+}
+
+void java_lang_Class::initialize_mirror_fields(Klass* k,
+ Handle mirror,
+ Handle protection_domain,
+ TRAPS) {
+ // Allocate a simple java object for a lock.
+ // This needs to be a java object because during class initialization
+ // it can be held across a java call.
+ typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
+ set_init_lock(mirror(), r);
+
+ // Set protection domain also
+ set_protection_domain(mirror(), protection_domain());
+
+ // Initialize static fields
+ InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
+}
+
+// Set the java.lang.Module module field in the java_lang_Class mirror
+void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
+ if (module.is_null()) {
+ // During startup, the module may be NULL only if java.base has not been defined yet.
+ // Put the class on the fixup_module_list to patch later when the java.lang.Module
+ // for java.base is known.
+ assert(!Universe::is_module_initialized(), "Incorrect java.lang.Module pre module system initialization");
+
+ bool javabase_was_defined = false;
+ {
+ MutexLocker m1(Module_lock, THREAD);
+ // Keep list of classes needing java.base module fixup
+ if (!ModuleEntryTable::javabase_defined()) {
+ assert(k->java_mirror() != NULL, "Class's mirror is null");
+ k->class_loader_data()->inc_keep_alive();
+ assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
+ fixup_module_field_list()->push(k);
+ } else {
+ javabase_was_defined = true;
+ }
+ }
+
+ // If java.base was already defined then patch this particular class with java.base.
+ if (javabase_was_defined) {
+ ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
+ assert(javabase_entry != NULL && javabase_entry->module() != NULL,
+ "Setting class module field, " JAVA_BASE_NAME " should be defined");
+ Handle javabase_handle(THREAD, javabase_entry->module());
+ set_module(mirror(), javabase_handle());
+ }
+ } else {
+ assert(Universe::is_module_initialized() ||
+ (ModuleEntryTable::javabase_defined() &&
+ (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
+ "Incorrect java.lang.Module specification while creating mirror");
+ set_module(mirror(), module());
+ }
+}
+
+// Statically allocate fixup lists because they always get created.
+void java_lang_Class::allocate_fixup_lists() {
+ GrowableArray<Klass*>* mirror_list =
+ new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
+ set_fixup_mirror_list(mirror_list);
+
+ GrowableArray<Klass*>* module_list =
+ new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
+ set_fixup_module_field_list(module_list);
+}
+
+void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
+ Handle module, Handle protection_domain, TRAPS) {
+ assert(k != NULL, "Use create_basic_type_mirror for primitive types");
+ 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);
+ k->set_modifier_flags(computed_modifiers);
+ // Class_klass has to be loaded because it is used to allocate
+ // the mirror.
+ if (SystemDictionary::Class_klass_loaded()) {
+ // Allocate mirror (java.lang.Class instance)
+ oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
+ Handle mirror(THREAD, mirror_oop);
+ Handle comp_mirror;
+
+ // Setup indirection from mirror->klass
+ java_lang_Class::set_klass(mirror(), k);
+
+ InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
+ assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
+
+ java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
+
+ // It might also have a component mirror. This mirror must already exist.
+ if (k->is_array_klass()) {
+ if (k->is_typeArray_klass()) {
+ BasicType type = TypeArrayKlass::cast(k)->element_type();
+ comp_mirror = Handle(THREAD, Universe::java_mirror(type));
+ } else {
+ assert(k->is_objArray_klass(), "Must be");
+ Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
+ assert(element_klass != NULL, "Must have an element klass");
+ comp_mirror = Handle(THREAD, element_klass->java_mirror());
+ }
+ assert(comp_mirror() != NULL, "must have a mirror");
+
+ // Two-way link between the array klass and its component mirror:
+ // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
+ set_component_mirror(mirror(), comp_mirror());
+ // See below for ordering dependencies between field array_klass in component mirror
+ // and java_mirror in this klass.
+ } else {
+ assert(k->is_instance_klass(), "Must be");
+
+ initialize_mirror_fields(k, mirror, protection_domain, THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ // If any of the fields throws an exception like OOM remove the klass field
+ // from the mirror so GC doesn't follow it after the klass has been deallocated.
+ // This mirror looks like a primitive type, which logically it is because it
+ // it represents no class.
+ java_lang_Class::set_klass(mirror(), NULL);
+ return;
+ }
+ }
+
+ // set the classLoader field in the java_lang_Class instance
+ assert(class_loader() == k->class_loader(), "should be same");
+ set_class_loader(mirror(), class_loader());
+
+ // Setup indirection from klass->mirror
+ // after any exceptions can happen during allocations.
+ k->set_java_mirror(mirror());
+
+ // Set the module field in the java_lang_Class instance. This must be done
+ // after the mirror is set.
+ set_mirror_module_field(k, mirror, module, THREAD);
+
+ if (comp_mirror() != NULL) {
+ // Set after k->java_mirror() is published, because compiled code running
+ // concurrently doesn't expect a k to have a null java_mirror.
+ release_set_array_klass(comp_mirror(), k);
+ }
+ } else {
+ assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
+ fixup_mirror_list()->push(k);
+ }
+}
+
+void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
+ assert(_module_offset != 0, "must have been computed already");
+ java_lang_Class::set_module(k->java_mirror(), module());
+}
+
+int java_lang_Class::oop_size(oop java_class) {
+ assert(_oop_size_offset != 0, "must be set");
+ int size = java_class->int_field(_oop_size_offset);
+ assert(size > 0, "Oop size must be greater than zero, not %d", size);
+ return size;
+}
+
+void java_lang_Class::set_oop_size(oop java_class, int size) {
+ assert(_oop_size_offset != 0, "must be set");
+ assert(size > 0, "Oop size must be greater than zero, not %d", size);
+ java_class->int_field_put(_oop_size_offset, size);
+}
+
+int java_lang_Class::static_oop_field_count(oop java_class) {
+ assert(_static_oop_field_count_offset != 0, "must be set");
+ return java_class->int_field(_static_oop_field_count_offset);
+}
+void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
+ assert(_static_oop_field_count_offset != 0, "must be set");
+ java_class->int_field_put(_static_oop_field_count_offset, size);
+}
+
+oop java_lang_Class::protection_domain(oop java_class) {
+ assert(_protection_domain_offset != 0, "must be set");
+ return java_class->obj_field(_protection_domain_offset);
+}
+void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
+ assert(_protection_domain_offset != 0, "must be set");
+ java_class->obj_field_put(_protection_domain_offset, pd);
+}
+
+void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
+ assert(_component_mirror_offset != 0, "must be set");
+ java_class->obj_field_put(_component_mirror_offset, comp_mirror);
+ }
+oop java_lang_Class::component_mirror(oop java_class) {
+ assert(_component_mirror_offset != 0, "must be set");
+ return java_class->obj_field(_component_mirror_offset);
+}
+
+oop java_lang_Class::init_lock(oop java_class) {
+ assert(_init_lock_offset != 0, "must be set");
+ return java_class->obj_field(_init_lock_offset);
+}
+void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
+ assert(_init_lock_offset != 0, "must be set");
+ java_class->obj_field_put(_init_lock_offset, init_lock);
+}
+
+objArrayOop java_lang_Class::signers(oop java_class) {
+ assert(_signers_offset != 0, "must be set");
+ return (objArrayOop)java_class->obj_field(_signers_offset);
+}
+void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
+ assert(_signers_offset != 0, "must be set");
+ java_class->obj_field_put(_signers_offset, (oop)signers);
+}
+
+
+void java_lang_Class::set_class_loader(oop java_class, oop loader) {
+ // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
+ if (_class_loader_offset != 0) {
+ java_class->obj_field_put(_class_loader_offset, loader);
+ }
+}
+
+oop java_lang_Class::class_loader(oop java_class) {
+ assert(_class_loader_offset != 0, "must be set");
+ return java_class->obj_field(_class_loader_offset);
+}
+
+oop java_lang_Class::module(oop java_class) {
+ assert(_module_offset != 0, "must be set");
+ return java_class->obj_field(_module_offset);
+}
+
+void java_lang_Class::set_module(oop java_class, oop module) {
+ assert(_module_offset != 0, "must be set");
+ java_class->obj_field_put(_module_offset, module);
+}
+
+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 = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
+ if (type != T_VOID) {
+ Klass* aklass = Universe::typeArrayKlassObj(type);
+ assert(aklass != NULL, "correct bootstrap");
+ release_set_array_klass(java_class, aklass);
+ }
+#ifdef ASSERT
+ InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
+ assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
+#endif
+ return java_class;
+}
+
+
+Klass* java_lang_Class::as_Klass(oop java_class) {
+ //%note memory_2
+ assert(java_lang_Class::is_instance(java_class), "must be a Class object");
+ Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
+ assert(k == NULL || k->is_klass(), "type check");
+ return k;
+}
+
+
+void java_lang_Class::set_klass(oop java_class, Klass* klass) {
+ assert(java_lang_Class::is_instance(java_class), "must be a Class object");
+ java_class->metadata_field_put(_klass_offset, klass);
+}
+
+
+void java_lang_Class::print_signature(oop java_class, outputStream* st) {
+ assert(java_lang_Class::is_instance(java_class), "must be a Class object");
+ Symbol* name = NULL;
+ bool is_instance = false;
+ if (is_primitive(java_class)) {
+ name = vmSymbols::type_signature(primitive_type(java_class));
+ } else {
+ Klass* k = as_Klass(java_class);
+ is_instance = k->is_instance_klass();
+ name = k->name();
+ }
+ if (name == NULL) {
+ st->print("<null>");
+ return;
+ }
+ if (is_instance) st->print("L");
+ st->write((char*) name->base(), (int) name->utf8_length());
+ if (is_instance) st->print(";");
+}
+
+Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
+ assert(java_lang_Class::is_instance(java_class), "must be a Class object");
+ Symbol* name;
+ if (is_primitive(java_class)) {
+ name = vmSymbols::type_signature(primitive_type(java_class));
+ // Because this can create a new symbol, the caller has to decrement
+ // the refcount, so make adjustment here and below for symbols returned
+ // that are not created or incremented due to a successful lookup.
+ name->increment_refcount();
+ } else {
+ Klass* k = as_Klass(java_class);
+ if (!k->is_instance_klass()) {
+ name = k->name();
+ name->increment_refcount();
+ } else {
+ ResourceMark rm;
+ const char* sigstr = k->signature_name();
+ int siglen = (int) strlen(sigstr);
+ if (!intern_if_not_found) {
+ name = SymbolTable::probe(sigstr, siglen);
+ } else {
+ name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
+ }
+ }
+ }
+ return name;
+}
+
+// Returns the Java name for this Java mirror (Resource allocated)
+// See Klass::external_name().
+// For primitive type Java mirrors, its type name is returned.
+const char* java_lang_Class::as_external_name(oop java_class) {
+ assert(java_lang_Class::is_instance(java_class), "must be a Class object");
+ const char* name = NULL;
+ if (is_primitive(java_class)) {
+ name = type2name(primitive_type(java_class));
+ } else {
+ name = as_Klass(java_class)->external_name();
+ }
+ if (name == NULL) {
+ name = "<null>";
+ }
+ return name;
+}
+
+Klass* java_lang_Class::array_klass_acquire(oop java_class) {
+ Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
+ assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
+ return k;
+}
+
+
+void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
+ assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
+ java_class->release_metadata_field_put(_array_klass_offset, klass);
+}
+
+
+bool java_lang_Class::is_primitive(oop java_class) {
+ // should assert:
+ //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
+ bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
+
+#ifdef ASSERT
+ if (is_primitive) {
+ Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
+ assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
+ "Should be either the T_VOID primitive or a java primitive");
+ }
+#endif
+
+ return is_primitive;
+}
+
+
+BasicType java_lang_Class::primitive_type(oop java_class) {
+ assert(java_lang_Class::is_primitive(java_class), "just checking");
+ Klass* ak = ((Klass*)java_class->metadata_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;
+}
+
+BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
+ assert(java_lang_Class::is_instance(java_class), "must be a Class object");
+ if (is_primitive(java_class)) {
+ if (reference_klass != NULL)
+ (*reference_klass) = NULL;
+ return primitive_type(java_class);
+ } else {
+ if (reference_klass != NULL)
+ (*reference_klass) = as_Klass(java_class);
+ return T_OBJECT;
+ }
+}
+
+
+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;
+
+ Klass* k = SystemDictionary::Class_klass();
+ // The classRedefinedCount field is only present starting in 1.5,
+ // so don't go fatal.
+ compute_optional_offset(classRedefinedCount_offset,
+ k, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
+
+ // Needs to be optional because the old build runs Queens during bootstrapping
+ // and jdk8-9 doesn't have coordinated pushes yet.
+ compute_optional_offset(_class_loader_offset,
+ k, vmSymbols::classLoader_name(),
+ vmSymbols::classloader_signature());
+
+ compute_offset(_component_mirror_offset,
+ k, vmSymbols::componentType_name(),
+ vmSymbols::class_signature());
+
+ compute_offset(_module_offset,
+ k, vmSymbols::module_name(),
+ vmSymbols::module_signature());
+
+ // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
+ // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
+ // GC treats them the same.
+ _init_lock_offset = _component_mirror_offset;
+
+ CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
+}
+
+int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
+ if (classRedefinedCount_offset == -1) {
+ // 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 (classRedefinedCount_offset == -1) {
+ // 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");
+
+ Klass* k = SystemDictionary::Thread_klass();
+ compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
+ compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
+ compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
+ compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
+ compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
+ compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
+ compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
+ compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
+ // The stackSize field is only present starting in 1.4, so don't go fatal.
+ compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
+ // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
+ compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
+ compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
+ // The parkBlocker field is only present starting in 1.6, so don't go fatal.
+ compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
+ compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
+ vmSymbols::long_signature());
+}
+
+
+JavaThread* java_lang_Thread::thread(oop java_thread) {
+ return (JavaThread*)java_thread->address_field(_eetop_offset);
+}
+
+
+void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
+ java_thread->address_field_put(_eetop_offset, (address)thread);
+}
+
+
+oop java_lang_Thread::name(oop java_thread) {
+ return java_thread->obj_field(_name_offset);
+}
+
+
+void java_lang_Thread::set_name(oop java_thread, oop name) {
+ 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) {
+ if (_stackSize_offset > 0) {
+ 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) {
+ // 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) {
+ // Make sure the caller is operating on behalf of the VM or is
+ // running VM code (state == _thread_in_vm).
+ assert(Threads_lock->owned_by_self() || 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::current().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(_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::_nthreads_offset = 0;
+int java_lang_ThreadGroup::_ngroups_offset = 0;
+
+oop java_lang_ThreadGroup::parent(oop java_thread_group) {
+ assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
+ return java_thread_group->obj_field(_parent_offset);
+}
+
+// ("name as oop" accessor is not necessary)
+
+const char* java_lang_ThreadGroup::name(oop java_thread_group) {
+ oop name = java_thread_group->obj_field(_name_offset);
+ // ThreadGroup.name can be null
+ if (name != NULL) {
+ return java_lang_String::as_utf8_string(name);
+ }
+ return NULL;
+}
+
+int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
+ assert(oopDesc::is_oop(java_thread_group), "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(oopDesc::is_oop(java_thread_group), "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(oopDesc::is_oop(java_thread_group), "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(oopDesc::is_oop(java_thread_group), "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(oopDesc::is_oop(java_thread_group), "thread group must be oop");
+ return java_thread_group->bool_field(_daemon_offset) != 0;
+}
+
+void java_lang_ThreadGroup::compute_offsets() {
+ assert(_parent_offset == 0, "offsets should be initialized only once");
+
+ Klass* k = SystemDictionary::ThreadGroup_klass();
+
+ compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
+ compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
+ compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
+ compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
+ compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
+ compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
+ compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
+ compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
+ compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
+}
+
+
+void java_lang_Throwable::compute_offsets() {
+ Klass* k = SystemDictionary::Throwable_klass();
+ compute_offset(depth_offset, k, vmSymbols::depth_name(), vmSymbols::int_signature());
+}
+
+oop java_lang_Throwable::unassigned_stacktrace() {
+ InstanceKlass* ik = SystemDictionary::Throwable_klass();
+ address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
+ if (UseCompressedOops) {
+ return oopDesc::load_decode_heap_oop((narrowOop *)addr);
+ } else {
+ return oopDesc::load_decode_heap_oop((oop*)addr);
+ }
+}
+
+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);
+}
+
+int java_lang_Throwable::depth(oop throwable) {
+ return throwable->int_field(depth_offset);
+}
+
+void java_lang_Throwable::set_depth(oop throwable, int value) {
+ throwable->int_field_put(depth_offset, value);
+}
+
+oop java_lang_Throwable::message(oop throwable) {
+ return throwable->obj_field(detailMessage_offset);
+}
+
+
+// Return Symbol for detailed_message or NULL
+Symbol* java_lang_Throwable::detail_message(oop throwable) {
+ PRESERVE_EXCEPTION_MARK; // Keep original exception
+ oop detailed_message = java_lang_Throwable::message(throwable);
+ if (detailed_message != NULL) {
+ return java_lang_String::as_symbol(detailed_message, THREAD);
+ }
+ return NULL;
+}
+
+void java_lang_Throwable::set_message(oop throwable, oop value) {
+ throwable->obj_field_put(detailMessage_offset, value);
+}
+
+
+void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
+ throwable->obj_field_put(stackTrace_offset, st_element_array);
+}
+
+void java_lang_Throwable::clear_stacktrace(oop throwable) {
+ set_stacktrace(throwable, NULL);
+}
+
+
+void java_lang_Throwable::print(oop throwable, outputStream* st) {
+ ResourceMark rm;
+ Klass* k = throwable->klass();
+ assert(k != NULL, "just checking");
+ st->print("%s", k->external_name());
+ oop msg = message(throwable);
+ if (msg != NULL) {
+ st->print(": %s", java_lang_String::as_utf8_string(msg));
+ }
+}
+
+// After this many redefines, the stack trace is unreliable.
+const int MAX_VERSION = USHRT_MAX;
+
+static inline bool version_matches(Method* method, int version) {
+ assert(version < MAX_VERSION, "version is too big");
+ return method != NULL && (method->constants()->version() == version);
+}
+
+
+// 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 {
+ friend class BacktraceIterator;
+ private:
+ Handle _backtrace;
+ objArrayOop _head;
+ typeArrayOop _methods;
+ typeArrayOop _bcis;
+ objArrayOop _mirrors;
+ typeArrayOop _names; // needed to insulate method name against redefinition
+ int _index;
+ NoSafepointVerifier _nsv;
+
+ enum {
+ trace_methods_offset = java_lang_Throwable::trace_methods_offset,
+ trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
+ trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
+ trace_names_offset = java_lang_Throwable::trace_names_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
+ };
+
+ // get info out of chunks
+ static typeArrayOop get_methods(objArrayHandle chunk) {
+ typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
+ assert(methods != NULL, "method array should be initialized in backtrace");
+ return methods;
+ }
+ static typeArrayOop get_bcis(objArrayHandle chunk) {
+ typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
+ assert(bcis != NULL, "bci array should be initialized in backtrace");
+ return bcis;
+ }
+ static objArrayOop get_mirrors(objArrayHandle chunk) {
+ objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
+ assert(mirrors != NULL, "mirror array should be initialized in backtrace");
+ return mirrors;
+ }
+ static typeArrayOop get_names(objArrayHandle chunk) {
+ typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
+ assert(names != NULL, "names array should be initialized in backtrace");
+ return names;
+ }
+
+ public:
+
+ // constructor for new backtrace
+ BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL), _names(NULL) {
+ expand(CHECK);
+ _backtrace = Handle(THREAD, _head);
+ _index = 0;
+ }
+
+ BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
+ _methods = get_methods(backtrace);
+ _bcis = get_bcis(backtrace);
+ _mirrors = get_mirrors(backtrace);
+ _names = get_names(backtrace);
+ assert(_methods->length() == _bcis->length() &&
+ _methods->length() == _mirrors->length() &&
+ _mirrors->length() == _names->length(),
+ "method and source information arrays should match");
+
+ // head is the preallocated backtrace
+ _head = backtrace();
+ _backtrace = Handle(thread, _head);
+ _index = 0;
+ }
+
+ void expand(TRAPS) {
+ objArrayHandle old_head(THREAD, _head);
+ PauseNoSafepointVerifier pnsv(&_nsv);
+
+ objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
+ objArrayHandle new_head(THREAD, head);
+
+ typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
+ typeArrayHandle new_methods(THREAD, methods);
+
+ typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
+ typeArrayHandle new_bcis(THREAD, bcis);
+
+ objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
+ objArrayHandle new_mirrors(THREAD, mirrors);
+
+ typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
+ typeArrayHandle new_names(THREAD, names);
+
+ 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());
+ new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
+ new_head->obj_at_put(trace_names_offset, new_names());
+
+ _head = new_head();
+ _methods = new_methods();
+ _bcis = new_bcis();
+ _mirrors = new_mirrors();
+ _names = new_names();
+ _index = 0;
+ }
+
+ oop backtrace() {
+ return _backtrace();
+ }
+
+ inline void push(Method* method, int bci, TRAPS) {
+ // Smear the -1 bci to 0 since the array only holds unsigned
+ // shorts. The later line number lookup would just smear the -1
+ // to a 0 even if it could be recorded.
+ if (bci == SynchronizationEntryBCI) bci = 0;
+
+ if (_index >= trace_chunk_size) {
+ methodHandle mhandle(THREAD, method);
+ expand(CHECK);
+ method = mhandle();
+ }
+
+ _methods->short_at_put(_index, method->orig_method_idnum());
+ _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
+
+ // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
+ // klass owning the symbols alive so their refcounts aren't decremented.
+ Symbol* name = method->name();
+ _names->symbol_at_put(_index, name);
+
+ // We need to save the mirrors in the backtrace to keep the class
+ // from being unloaded while we still have this stack trace.
+ assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
+ _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
+ _index++;
+ }
+
+};
+
+struct BacktraceElement : public StackObj {
+ int _method_id;
+ int _bci;
+ int _version;
+ Symbol* _name;
+ Handle _mirror;
+ BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
+ _mirror(mirror), _method_id(mid), _version(version), _bci(bci), _name(name) {}
+};
+
+class BacktraceIterator : public StackObj {
+ int _index;
+ objArrayHandle _result;
+ objArrayHandle _mirrors;
+ typeArrayHandle _methods;
+ typeArrayHandle _bcis;
+ typeArrayHandle _names;
+
+ void init(objArrayHandle result, Thread* thread) {
+ // Get method id, bci, version and mirror from chunk
+ _result = result;
+ if (_result.not_null()) {
+ _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
+ _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
+ _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
+ _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
+ _index = 0;
+ }
+ }
+ public:
+ BacktraceIterator(objArrayHandle result, Thread* thread) {
+ init(result, thread);
+ assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
+ }
+
+ BacktraceElement next(Thread* thread) {
+ BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
+ _methods->short_at(_index),
+ Backtrace::version_at(_bcis->int_at(_index)),
+ Backtrace::bci_at(_bcis->int_at(_index)),
+ _names->symbol_at(_index));
+ _index++;
+
+ if (_index >= java_lang_Throwable::trace_chunk_size) {
+ int next_offset = java_lang_Throwable::trace_next_offset;
+ // Get next chunk
+ objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
+ init(result, thread);
+ }
+ return e;
+ }
+
+ bool repeat() {
+ return _result.not_null() && _mirrors->obj_at(_index) != NULL;
+ }
+};
+
+
+// Print stack trace element to resource allocated buffer
+static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
+ int version, int bci, Symbol* name) {
+ ResourceMark rm;
+
+ // Get strings and string lengths
+ InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
+ const char* klass_name = holder->external_name();
+ int buf_len = (int)strlen(klass_name);
+
+ char* method_name = name->as_C_string();
+ buf_len += (int)strlen(method_name);
+
+ char* source_file_name = NULL;
+ Symbol* source = Backtrace::get_source_file_name(holder, version);
+ if (source != NULL) {
+ source_file_name = source->as_C_string();
+ buf_len += (int)strlen(source_file_name);
+ }
+
+ char *module_name = NULL, *module_version = NULL;
+ ModuleEntry* module = holder->module();
+ if (module->is_named()) {
+ module_name = module->name()->as_C_string();
+ buf_len += (int)strlen(module_name);
+ if (module->version() != NULL) {
+ module_version = module->version()->as_C_string();
+ buf_len += (int)strlen(module_version);
+ }
+ }
+
+ // 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);
+
+ // Print module information
+ if (module_name != NULL) {
+ if (module_version != NULL) {
+ sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
+ } else {
+ sprintf(buf + (int)strlen(buf), "%s/", module_name);
+ }
+ }
+
+ // The method can be NULL if the requested class version is gone
+ Method* method = holder->method_with_orig_idnum(method_id, version);
+ if (!version_matches(method, version)) {
+ strcat(buf, "Redefined)");
+ } else {
+ int line_number = Backtrace::get_line_number(method, bci);
+ if (line_number == -2) {
+ strcat(buf, "Native Method)");
+ } else {
+ 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 sourcename nor linenumber
+ sprintf(buf + (int)strlen(buf), "Unknown Source)");
+ }
+ CompiledMethod* nm = method->code();
+ if (WizardMode && nm != NULL) {
+ sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
+ }
+ }
+ }
+
+ st->print_cr("%s", buf);
+}
+
+void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
+ Handle mirror (Thread::current(), method->method_holder()->java_mirror());
+ int method_id = method->orig_method_idnum();
+ int version = method->constants()->version();
+ print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
+}
+
+/**
+ * Print the throwable message and its stack trace plus all causes by walking the
+ * cause chain. The output looks the same as of Throwable.printStackTrace().
+ */
+void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
+ // First, print the message.
+ print(throwable(), st);
+ st->cr();
+
+ // Now print the stack trace.
+ Thread* THREAD = Thread::current();
+ while (throwable.not_null()) {
+ objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
+ if (result.is_null()) {
+ st->print_raw_cr("\t<<no stack trace available>>");
+ return;
+ }
+ BacktraceIterator iter(result, THREAD);
+
+ while (iter.repeat()) {
+ BacktraceElement bte = iter.next(THREAD);
+ print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
+ }
+ {
+ // Call getCause() which doesn't necessarily return the _cause field.
+ EXCEPTION_MARK;
+ JavaValue cause(T_OBJECT);
+ JavaCalls::call_virtual(&cause,
+ throwable,
+ throwable->klass(),
+ vmSymbols::getCause_name(),
+ vmSymbols::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;
+ throwable = Handle();
+ } else {
+ throwable = Handle(THREAD, (oop) cause.get_jobject());
+ if (throwable.not_null()) {
+ st->print("Caused by: ");
+ print(throwable(), st);
+ st->cr();
+ }
+ }
+ }
+ }
+}
+
+/**
+ * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
+ */
+void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
+ assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
+ JavaValue result(T_VOID);
+ JavaCalls::call_virtual(&result,
+ throwable,
+ SystemDictionary::Throwable_klass(),
+ vmSymbols::printStackTrace_name(),
+ vmSymbols::void_method_signature(),
+ THREAD);
+}
+
+void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, 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);
+ // Clear lazily constructed Java level stacktrace if refilling occurs
+ // This is unnecessary in 1.7+ but harmless
+ clear_stacktrace(throwable());
+
+ int max_depth = MaxJavaStackTraceDepth;
+ JavaThread* thread = (JavaThread*)THREAD;
+
+ BacktraceBuilder bt(CHECK);
+
+ // If there is no Java frame just return the method that was being called
+ // with bci 0
+ if (!thread->has_last_Java_frame()) {
+ if (max_depth >= 1 && method() != NULL) {
+ bt.push(method(), 0, CHECK);
+ log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
+ set_depth(throwable(), 1);
+ set_backtrace(throwable(), bt.backtrace());
+ }
+ return;
+ }
+
+ // 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;
+ CompiledMethod* nm = NULL;
+ bool skip_fillInStackTrace_check = false;
+ bool skip_throwableInit_check = false;
+ bool skip_hidden = !ShowHiddenFrames;
+
+ for (frame fr = thread->last_frame(); max_depth != total_count;) {
+ Method* method = NULL;
+ int bci = 0;
+
+ // Compiled java method case.
+ if (decode_offset != 0) {
+ DebugInfoReadStream stream(nm, decode_offset);
+ decode_offset = stream.read_int();
+ method = (Method*)nm->metadata_at(stream.read_int());
+ bci = stream.read_bci();
+ } else {
+ if (fr.is_first_frame()) break;
+ address pc = fr.pc();
+ if (fr.is_interpreted_frame()) {
+ address bcp = fr.interpreter_frame_bcp();
+ method = fr.interpreter_frame_method();
+ bci = method->bci_from(bcp);
+ 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_compiled()) {
+ continue;
+ }
+ nm = cb->as_compiled_method();
+ 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 Method* in case we GC.
+ if (!st.at_end()) {
+ st_method = st.method();
+ }
+#endif
+
+ // the format of the stacktrace will be:
+ // - 1 or more fillInStackTrace frames for the exception class (skipped)
+ // - 0 or more <init> methods for the exception class (skipped)
+ // - rest of the stack
+
+ if (!skip_fillInStackTrace_check) {
+ if (method->name() == vmSymbols::fillInStackTrace_name() &&
+ throwable->is_a(method->method_holder())) {
+ continue;
+ }
+ else {
+ skip_fillInStackTrace_check = true; // gone past them all
+ }
+ }
+ if (!skip_throwableInit_check) {
+ assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
+
+ // skip <init> methods of the exception class and superclasses
+ // This is simlar to classic VM.
+ if (method->name() == vmSymbols::object_initializer_name() &&
+ throwable->is_a(method->method_holder())) {
+ continue;
+ } else {
+ // there are none or we've seen them all - either way stop checking
+ skip_throwableInit_check = true;
+ }
+ }
+ if (method->is_hidden()) {
+ if (skip_hidden) continue;
+ }
+ bt.push(method, bci, CHECK);
+ total_count++;
+ }
+
+ log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
+
+ // Put completed stack trace into throwable object
+ set_backtrace(throwable(), bt.backtrace());
+ set_depth(throwable(), total_count);
+}
+
+void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
+ // 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, method, 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;
+ BacktraceBuilder bt(CHECK); // creates a backtrace
+ set_backtrace(throwable(), bt.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");
+
+ JavaThread* THREAD = JavaThread::current();
+
+ objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
+ assert(backtrace.not_null(), "backtrace should have been preallocated");
+
+ ResourceMark rm(THREAD);
+ vframeStream st(THREAD);
+
+ BacktraceBuilder bt(THREAD, backtrace);
+
+ // 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 chunk_count = 0;
+ for (;!st.at_end(); st.next()) {
+ bt.push(st.method(), st.bci(), CHECK);
+ chunk_count++;
+
+ // Bail-out for deep stacks
+ if (chunk_count >= trace_chunk_size) break;
+ }
+ set_depth(throwable(), chunk_count);
+ log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
+
+ // We support the Throwable immutability protocol defined for Java 7.
+ java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
+ assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
+}
+
+void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
+ objArrayHandle stack_trace_array_h, TRAPS) {
+
+ if (throwable.is_null() || stack_trace_array_h.is_null()) {
+ THROW(vmSymbols::java_lang_NullPointerException());
+ }
+
+ assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
+
+ if (stack_trace_array_h->length() != depth(throwable())) {
+ THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
+ }
+
+ objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
+ BacktraceIterator iter(result, THREAD);
+
+ int index = 0;
+ while (iter.repeat()) {
+ BacktraceElement bte = iter.next(THREAD);
+
+ Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
+
+ if (stack_trace_element.is_null()) {
+ THROW(vmSymbols::java_lang_NullPointerException());
+ }
+
+ InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
+ methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
+
+ java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
+ method,
+ bte._version,
+ bte._bci,
+ bte._name, CHECK);
+ }
+}
+
+oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
+ // Allocate java.lang.StackTraceElement instance
+ InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
+ assert(k != NULL, "must be loaded in 1.4+");
+ if (k->should_be_initialized()) {
+ k->initialize(CHECK_0);
+ }
+
+ Handle element = k->allocate_instance_handle(CHECK_0);
+
+ int version = method->constants()->version();
+ fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_0);
+ return element();
+}
+
+void java_lang_StackTraceElement::fill_in(Handle element,
+ InstanceKlass* holder, const methodHandle& method,
+ int version, int bci, Symbol* name, TRAPS) {
+ assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
+
+ // Fill in class name
+ ResourceMark rm(THREAD);
+ const char* str = holder->external_name();
+ oop classname = StringTable::intern((char*) str, CHECK);
+ java_lang_StackTraceElement::set_declaringClass(element(), classname);
+ java_lang_StackTraceElement::set_declaringClassObject(element(), holder->java_mirror());
+
+ oop loader = holder->class_loader();
+ if (loader != NULL) {
+ oop loader_name = java_lang_ClassLoader::name(loader);
+ if (loader_name != NULL)
+ java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
+ }
+
+ // Fill in method name
+ oop methodname = StringTable::intern(name, CHECK);
+ java_lang_StackTraceElement::set_methodName(element(), methodname);
+
+ // Fill in module name and version
+ ModuleEntry* module = holder->module();
+ if (module->is_named()) {
+ oop module_name = StringTable::intern(module->name(), CHECK);
+ java_lang_StackTraceElement::set_moduleName(element(), module_name);
+ oop module_version;
+ if (module->version() != NULL) {
+ module_version = StringTable::intern(module->version(), CHECK);
+ } else {
+ module_version = NULL;
+ }
+ java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
+ }
+
+ if (method() == NULL || !version_matches(method(), version)) {
+ // The method was redefined, accurate line number information isn't available
+ java_lang_StackTraceElement::set_fileName(element(), NULL);
+ java_lang_StackTraceElement::set_lineNumber(element(), -1);
+ } else {
+ // Fill in source file name and line number.
+ Symbol* source = Backtrace::get_source_file_name(holder, version);
+ if (ShowHiddenFrames && source == NULL)
+ source = vmSymbols::unknown_class_name();
+ oop filename = StringTable::intern(source, CHECK);
+ java_lang_StackTraceElement::set_fileName(element(), filename);
+
+ int line_number = Backtrace::get_line_number(method, bci);
+ java_lang_StackTraceElement::set_lineNumber(element(), line_number);
+ }
+}
+
+Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
+ Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
+ Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
+ // we should expand MemberName::name when Throwable uses StackTrace
+ // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
+ return method;
+}
+
+void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
+ // set Method* or mid/cpref
+ Handle mname(Thread::current(), stackFrame->obj_field(_memberName_offset));
+ InstanceKlass* ik = method->method_holder();
+ CallInfo info(method(), ik, CHECK);
+ MethodHandles::init_method_MemberName(mname, info);
+ // set bci
+ java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
+ // method may be redefined; store the version
+ int version = method->constants()->version();
+ assert((jushort)version == version, "version should be short");
+ java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
+}
+
+void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
+ ResourceMark rm(THREAD);
+ Handle k (THREAD, stackFrame->obj_field(_declaringClass_offset));
+ InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(k()));
+ Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
+
+ short version = stackFrame->short_field(_version_offset);
+ short bci = stackFrame->short_field(_bci_offset);
+ Symbol* name = method->name();
+ java_lang_StackTraceElement::fill_in(stack_trace_element, holder, method, version, bci, name, CHECK);
+}
+
+void java_lang_StackFrameInfo::compute_offsets() {
+ Klass* k = SystemDictionary::StackFrameInfo_klass();
+ compute_offset(_declaringClass_offset, k, vmSymbols::declaringClass_name(), vmSymbols::class_signature());
+ compute_offset(_memberName_offset, k, vmSymbols::memberName_name(), vmSymbols::object_signature());
+ compute_offset(_bci_offset, k, vmSymbols::bci_name(), vmSymbols::short_signature());
+ STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
+}
+
+void java_lang_LiveStackFrameInfo::compute_offsets() {
+ Klass* k = SystemDictionary::LiveStackFrameInfo_klass();
+ compute_offset(_monitors_offset, k, vmSymbols::monitors_name(), vmSymbols::object_array_signature());
+ compute_offset(_locals_offset, k, vmSymbols::locals_name(), vmSymbols::object_array_signature());
+ compute_offset(_operands_offset, k, vmSymbols::operands_name(), vmSymbols::object_array_signature());
+ compute_offset(_mode_offset, k, vmSymbols::mode_name(), vmSymbols::int_signature());
+}
+
+void java_lang_reflect_AccessibleObject::compute_offsets() {
+ Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
+ compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
+}
+
+jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ return (jboolean) reflect->bool_field(override_offset);
+}
+
+void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ reflect->bool_field_put(override_offset, (int) value);
+}
+
+void java_lang_reflect_Method::compute_offsets() {
+ Klass* k = SystemDictionary::reflect_Method_klass();
+ compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
+ compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
+ compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
+ compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
+ compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
+ compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
+ compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
+ // The generic signature and annotations fields are only present in 1.5
+ signature_offset = -1;
+ annotations_offset = -1;
+ parameter_annotations_offset = -1;
+ annotation_default_offset = -1;
+ type_annotations_offset = -1;
+ compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
+ compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
+ compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
+ compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
+ compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_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");
+ Klass* 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(THREAD);
+}
+
+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);
+}
+
+bool java_lang_reflect_Method::has_type_annotations_field() {
+ return (type_annotations_offset >= 0);
+}
+
+oop java_lang_reflect_Method::type_annotations(oop method) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ assert(has_type_annotations_field(), "type_annotations field must be present");
+ return method->obj_field(type_annotations_offset);
+}
+
+void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ assert(has_type_annotations_field(), "type_annotations field must be present");
+ method->obj_field_put(type_annotations_offset, value);
+}
+
+void java_lang_reflect_Constructor::compute_offsets() {
+ Klass* k = SystemDictionary::reflect_Constructor_klass();
+ compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
+ compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
+ compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
+ compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
+ compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
+ // The generic signature and annotations fields are only present in 1.5
+ signature_offset = -1;
+ annotations_offset = -1;
+ parameter_annotations_offset = -1;
+ type_annotations_offset = -1;
+ compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
+ compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
+ compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
+ compute_optional_offset(type_annotations_offset, k, vmSymbols::type_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");
+ Symbol* name = vmSymbols::java_lang_reflect_Constructor();
+ Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
+ InstanceKlass* ik = InstanceKlass::cast(k);
+ // Ensure it is initialized
+ ik->initialize(CHECK_NH);
+ return ik->allocate_instance_handle(THREAD);
+}
+
+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);
+}
+
+bool java_lang_reflect_Constructor::has_type_annotations_field() {
+ return (type_annotations_offset >= 0);
+}
+
+oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ assert(has_type_annotations_field(), "type_annotations field must be present");
+ return constructor->obj_field(type_annotations_offset);
+}
+
+void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ assert(has_type_annotations_field(), "type_annotations field must be present");
+ constructor->obj_field_put(type_annotations_offset, value);
+}
+
+void java_lang_reflect_Field::compute_offsets() {
+ Klass* k = SystemDictionary::reflect_Field_klass();
+ compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
+ compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
+ compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
+ compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
+ compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
+ // The generic signature and annotations fields are only present in 1.5
+ signature_offset = -1;
+ annotations_offset = -1;
+ type_annotations_offset = -1;
+ compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
+ compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
+ compute_optional_offset(type_annotations_offset, k, vmSymbols::type_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");
+ Symbol* name = vmSymbols::java_lang_reflect_Field();
+ Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
+ InstanceKlass* ik = InstanceKlass::cast(k);
+ // Ensure it is initialized
+ ik->initialize(CHECK_NH);
+ return ik->allocate_instance_handle(THREAD);
+}
+
+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);
+}
+
+bool java_lang_reflect_Field::has_type_annotations_field() {
+ return (type_annotations_offset >= 0);
+}
+
+oop java_lang_reflect_Field::type_annotations(oop field) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ assert(has_type_annotations_field(), "type_annotations field must be present");
+ return field->obj_field(type_annotations_offset);
+}
+
+void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ assert(has_type_annotations_field(), "type_annotations field must be present");
+ field->obj_field_put(type_annotations_offset, value);
+}
+
+void reflect_ConstantPool::compute_offsets() {
+ Klass* k = SystemDictionary::reflect_ConstantPool_klass();
+ // This null test can be removed post beta
+ if (k != NULL) {
+ // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
+ compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
+ }
+}
+
+void java_lang_reflect_Parameter::compute_offsets() {
+ Klass* k = SystemDictionary::reflect_Parameter_klass();
+ if(NULL != k) {
+ compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
+ compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
+ compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature());
+ compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature());
+ }
+}
+
+Handle java_lang_reflect_Parameter::create(TRAPS) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ Symbol* name = vmSymbols::java_lang_reflect_Parameter();
+ Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
+ InstanceKlass* ik = InstanceKlass::cast(k);
+ // Ensure it is initialized
+ ik->initialize(CHECK_NH);
+ return ik->allocate_instance_handle(THREAD);
+}
+
+oop java_lang_reflect_Parameter::name(oop param) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ return param->obj_field(name_offset);
+}
+
+void java_lang_reflect_Parameter::set_name(oop param, oop value) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ param->obj_field_put(name_offset, value);
+}
+
+int java_lang_reflect_Parameter::modifiers(oop param) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ return param->int_field(modifiers_offset);
+}
+
+void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ param->int_field_put(modifiers_offset, value);
+}
+
+int java_lang_reflect_Parameter::index(oop param) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ return param->int_field(index_offset);
+}
+
+void java_lang_reflect_Parameter::set_index(oop param, int value) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ param->int_field_put(index_offset, value);
+}
+
+oop java_lang_reflect_Parameter::executable(oop param) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ return param->obj_field(executable_offset);
+}
+
+void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ param->obj_field_put(executable_offset, value);
+}
+
+
+int java_lang_Module::loader_offset;
+int java_lang_Module::name_offset;
+int java_lang_Module::_module_entry_offset = -1;
+
+Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+
+ Symbol* name = vmSymbols::java_lang_Module();
+ Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
+ InstanceKlass* ik = InstanceKlass::cast(k);
+ Handle jlmh = ik->allocate_instance_handle(CHECK_NH);
+ JavaValue result(T_VOID);
+ JavaCalls::call_special(&result, jlmh, ik,
+ vmSymbols::object_initializer_name(),
+ vmSymbols::java_lang_module_init_signature(),
+ loader, module_name, CHECK_NH);
+ return jlmh;
+}
+
+void java_lang_Module::compute_offsets() {
+ Klass* k = SystemDictionary::Module_klass();
+ if(NULL != k) {
+ compute_offset(loader_offset, k, vmSymbols::loader_name(), vmSymbols::classloader_signature());
+ compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
+ MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
+ }
+}
+
+
+oop java_lang_Module::loader(oop module) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ return module->obj_field(loader_offset);
+}
+
+void java_lang_Module::set_loader(oop module, oop value) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ module->obj_field_put(loader_offset, value);
+}
+
+oop java_lang_Module::name(oop module) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ return module->obj_field(name_offset);
+}
+
+void java_lang_Module::set_name(oop module, oop value) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ module->obj_field_put(name_offset, value);
+}
+
+ModuleEntry* java_lang_Module::module_entry(oop module, TRAPS) {
+ assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
+ assert(module != NULL, "module can't be null");
+ assert(oopDesc::is_oop(module), "module must be oop");
+
+ ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
+ if (module_entry == NULL) {
+ // If the inject field containing the ModuleEntry* is null then return the
+ // class loader's unnamed module.
+ oop loader = java_lang_Module::loader(module);
+ Handle h_loader = Handle(THREAD, loader);
+ ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader, CHECK_NULL);
+ return loader_cld->unnamed_module();
+ }
+ return module_entry;
+}
+
+void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
+ assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
+ assert(module != NULL, "module can't be null");
+ assert(oopDesc::is_oop(module), "module must be oop");
+ module->address_field_put(_module_entry_offset, (address)module_entry);
+}
+
+Handle reflect_ConstantPool::create(TRAPS) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
+ // Ensure it is initialized
+ k->initialize(CHECK_NH);
+ return k->allocate_instance_handle(THREAD);
+}
+
+
+void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+ oop mirror = value->pool_holder()->java_mirror();
+ // Save the mirror to get back the constant pool.
+ reflect->obj_field_put(_oop_offset, mirror);
+}
+
+ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
+ assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
+
+ oop mirror = reflect->obj_field(_oop_offset);
+ Klass* k = java_lang_Class::as_Klass(mirror);
+ assert(k->is_instance_klass(), "Must be");
+
+ // Get the constant pool back from the klass. Since class redefinition
+ // merges the new constant pool into the old, this is essentially the
+ // same constant pool as the original. If constant pool merging is
+ // no longer done in the future, this will have to change to save
+ // the original.
+ return InstanceKlass::cast(k)->constants();
+}
+
+void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
+ Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
+ // This null test can be removed post beta
+ if (k != NULL) {
+ compute_offset(_base_offset, k,
+ vmSymbols::base_name(), vmSymbols::object_signature());
+ }
+}
+
+oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
+ Klass* k = SystemDictionary::box_klass(type);
+ if (k == NULL) return NULL;
+ InstanceKlass* ik = InstanceKlass::cast(k);
+ if (!ik->is_initialized()) ik->initialize(CHECK_0);
+ return ik->allocate_instance(THREAD);
+}
+
+
+oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
+ oop box = initialize_and_allocate(type, CHECK_0);
+ if (box == NULL) return NULL;
+ switch (type) {
+ case T_BOOLEAN:
+ box->bool_field_put(value_offset, value->z);
+ break;
+ case T_CHAR:
+ box->char_field_put(value_offset, value->c);
+ break;
+ case T_FLOAT:
+ box->float_field_put(value_offset, value->f);
+ break;
+ case T_DOUBLE:
+ box->double_field_put(long_value_offset, value->d);
+ break;
+ case T_BYTE:
+ box->byte_field_put(value_offset, value->b);
+ break;
+ case T_SHORT:
+ box->short_field_put(value_offset, value->s);
+ break;
+ case T_INT:
+ box->int_field_put(value_offset, value->i);
+ break;
+ case T_LONG:
+ box->long_field_put(long_value_offset, value->j);
+ break;
+ default:
+ return NULL;
+ }
+ return box;
+}
+
+
+BasicType java_lang_boxing_object::basic_type(oop box) {
+ if (box == NULL) return T_ILLEGAL;
+ BasicType type = SystemDictionary::box_klass_type(box->klass());
+ if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
+ return T_ILLEGAL;
+ return type;
+}
+
+
+BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
+ BasicType type = SystemDictionary::box_klass_type(box->klass());
+ switch (type) {
+ case T_BOOLEAN:
+ value->z = box->bool_field(value_offset);
+ break;
+ case T_CHAR:
+ value->c = box->char_field(value_offset);
+ break;
+ case T_FLOAT:
+ value->f = box->float_field(value_offset);
+ break;
+ case T_DOUBLE:
+ value->d = box->double_field(long_value_offset);
+ break;
+ case T_BYTE:
+ value->b = box->byte_field(value_offset);
+ break;
+ case T_SHORT:
+ value->s = box->short_field(value_offset);
+ break;
+ case T_INT:
+ value->i = box->int_field(value_offset);
+ break;
+ case T_LONG:
+ value->j = box->long_field(long_value_offset);
+ break;
+ default:
+ return T_ILLEGAL;
+ } // end switch
+ return type;
+}
+
+
+BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
+ BasicType type = SystemDictionary::box_klass_type(box->klass());
+ switch (type) {
+ case T_BOOLEAN:
+ box->bool_field_put(value_offset, value->z);
+ break;
+ case T_CHAR:
+ box->char_field_put(value_offset, value->c);
+ break;
+ case T_FLOAT:
+ box->float_field_put(value_offset, value->f);
+ break;
+ case T_DOUBLE:
+ box->double_field_put(long_value_offset, value->d);
+ break;
+ case T_BYTE:
+ box->byte_field_put(value_offset, value->b);
+ break;
+ case T_SHORT:
+ box->short_field_put(value_offset, value->s);
+ break;
+ case T_INT:
+ box->int_field_put(value_offset, value->i);
+ break;
+ case T_LONG:
+ box->long_field_put(long_value_offset, value->j);
+ break;
+ default:
+ return T_ILLEGAL;
+ } // end switch
+ return type;
+}
+
+
+void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
+ switch (type) {
+ case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
+ case T_CHAR: st->print("%d", value->c); break;
+ case T_BYTE: st->print("%d", value->b); break;
+ case T_SHORT: st->print("%d", value->s); break;
+ case T_INT: st->print("%d", value->i); break;
+ case T_LONG: st->print(JLONG_FORMAT, value->j); break;
+ case T_FLOAT: st->print("%f", value->f); break;
+ case T_DOUBLE: st->print("%lf", value->d); break;
+ default: st->print("type %d?", type); break;
+ }
+}
+
+// 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 = SystemDictionary::SoftReference_klass();
+ jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
+ return *offset;
+}
+
+void java_lang_ref_SoftReference::set_clock(jlong value) {
+ InstanceKlass* ik = SystemDictionary::SoftReference_klass();
+ jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
+ *offset = value;
+}
+
+// Support for java_lang_invoke_DirectMethodHandle
+
+int java_lang_invoke_DirectMethodHandle::_member_offset;
+
+oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
+ oop member_name = NULL;
+ assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
+ "a DirectMethodHandle oop is expected");
+ return dmh->obj_field(member_offset_in_bytes());
+}
+
+void java_lang_invoke_DirectMethodHandle::compute_offsets() {
+ Klass* k = SystemDictionary::DirectMethodHandle_klass();
+ if (k != NULL) {
+ compute_offset(_member_offset, k, vmSymbols::member_name(), vmSymbols::java_lang_invoke_MemberName_signature());
+ }
+}
+
+// Support for java_lang_invoke_MethodHandle
+
+int java_lang_invoke_MethodHandle::_type_offset;
+int java_lang_invoke_MethodHandle::_form_offset;
+
+int java_lang_invoke_MemberName::_clazz_offset;
+int java_lang_invoke_MemberName::_name_offset;
+int java_lang_invoke_MemberName::_type_offset;
+int java_lang_invoke_MemberName::_flags_offset;
+int java_lang_invoke_MemberName::_method_offset;
+int java_lang_invoke_MemberName::_vmindex_offset;
+
+int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
+int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
+
+int java_lang_invoke_LambdaForm::_vmentry_offset;
+
+void java_lang_invoke_MethodHandle::compute_offsets() {
+ Klass* k = SystemDictionary::MethodHandle_klass();
+ if (k != NULL) {
+ compute_offset(_type_offset, k, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
+ compute_offset(_form_offset, k, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
+ }
+}
+
+void java_lang_invoke_MemberName::compute_offsets() {
+ Klass* k = SystemDictionary::MemberName_klass();
+ assert (k != NULL, "jdk mismatch");
+ compute_offset(_clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
+ compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
+ compute_offset(_type_offset, k, vmSymbols::type_name(), vmSymbols::object_signature());
+ compute_offset(_flags_offset, k, vmSymbols::flags_name(), vmSymbols::int_signature());
+ compute_offset(_method_offset, k, vmSymbols::method_name(), vmSymbols::java_lang_invoke_ResolvedMethodName_signature());
+ MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
+}
+
+void java_lang_invoke_ResolvedMethodName::compute_offsets() {
+ Klass* k = SystemDictionary::ResolvedMethodName_klass();
+ assert(k != NULL, "jdk mismatch");
+ RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
+}
+
+void java_lang_invoke_LambdaForm::compute_offsets() {
+ Klass* k = SystemDictionary::LambdaForm_klass();
+ assert (k != NULL, "jdk mismatch");
+ compute_offset(_vmentry_offset, k, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
+}
+
+bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
+ return obj != NULL && is_subclass(obj->klass());
+}
+
+
+oop java_lang_invoke_MethodHandle::type(oop mh) {
+ return mh->obj_field(_type_offset);
+}
+
+void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
+ mh->obj_field_put(_type_offset, mtype);
+}
+
+oop java_lang_invoke_MethodHandle::form(oop mh) {
+ assert(_form_offset != 0, "");
+ return mh->obj_field(_form_offset);
+}
+
+void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
+ assert(_form_offset != 0, "");
+ mh->obj_field_put(_form_offset, lform);
+}
+
+/// MemberName accessors
+
+oop java_lang_invoke_MemberName::clazz(oop mname) {
+ assert(is_instance(mname), "wrong type");
+ return mname->obj_field(_clazz_offset);
+}
+
+void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
+ assert(is_instance(mname), "wrong type");
+ mname->obj_field_put(_clazz_offset, clazz);
+}
+
+oop java_lang_invoke_MemberName::name(oop mname) {
+ assert(is_instance(mname), "wrong type");
+ return mname->obj_field(_name_offset);
+}
+
+void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
+ assert(is_instance(mname), "wrong type");
+ mname->obj_field_put(_name_offset, name);
+}
+
+oop java_lang_invoke_MemberName::type(oop mname) {
+ assert(is_instance(mname), "wrong type");
+ return mname->obj_field(_type_offset);
+}
+
+void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
+ assert(is_instance(mname), "wrong type");
+ mname->obj_field_put(_type_offset, type);
+}
+
+int java_lang_invoke_MemberName::flags(oop mname) {
+ assert(is_instance(mname), "wrong type");
+ return mname->int_field(_flags_offset);
+}
+
+void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
+ assert(is_instance(mname), "wrong type");
+ mname->int_field_put(_flags_offset, flags);
+}
+
+
+// Return vmtarget from ResolvedMethodName method field through indirection
+Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
+ assert(is_instance(mname), "wrong type");
+ oop method = mname->obj_field(_method_offset);
+ return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
+}
+
+bool java_lang_invoke_MemberName::is_method(oop mname) {
+ assert(is_instance(mname), "must be MemberName");
+ return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
+}
+
+void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
+ assert(is_instance(mname), "wrong type");
+ mname->obj_field_put(_method_offset, resolved_method);
+}
+
+intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
+ assert(is_instance(mname), "wrong type");
+ return (intptr_t) mname->address_field(_vmindex_offset);
+}
+
+void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
+ assert(is_instance(mname), "wrong type");
+ mname->address_field_put(_vmindex_offset, (address) index);
+}
+
+
+Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
+ assert(is_instance(resolved_method), "wrong type");
+ Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
+ assert(m->is_method(), "must be");
+ return m;
+}
+
+// Used by redefinition to change Method* to new Method* with same hash (name, signature)
+void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
+ assert(is_instance(resolved_method), "wrong type");
+ resolved_method->address_field_put(_vmtarget_offset, (address)m);
+}
+
+oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
+ // lookup ResolvedMethod oop in the table, or create a new one and intern it
+ oop resolved_method = ResolvedMethodTable::find_method(m());
+ if (resolved_method == NULL) {
+ InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
+ if (!k->is_initialized()) {
+ k->initialize(CHECK_NULL);
+ }
+ oop new_resolved_method = k->allocate_instance(CHECK_NULL);
+ new_resolved_method->address_field_put(_vmtarget_offset, (address)m());
+ // Add a reference to the loader (actually mirror because anonymous classes will not have
+ // distinct loaders) to ensure the metadata is kept alive.
+ // This mirror may be different than the one in clazz field.
+ new_resolved_method->obj_field_put(_vmholder_offset, m->method_holder()->java_mirror());
+ resolved_method = ResolvedMethodTable::add_method(Handle(THREAD, new_resolved_method));
+ }
+ return resolved_method;
+}
+
+oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
+ assert(is_instance(lform), "wrong type");
+ return lform->obj_field(_vmentry_offset);
+}
+
+
+// Support for java_lang_invoke_MethodType
+
+int java_lang_invoke_MethodType::_rtype_offset;
+int java_lang_invoke_MethodType::_ptypes_offset;
+
+void java_lang_invoke_MethodType::compute_offsets() {
+ Klass* k = SystemDictionary::MethodType_klass();
+ if (k != NULL) {
+ compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
+ compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
+ }
+}
+
+void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
+ st->print("(");
+ objArrayOop pts = ptypes(mt);
+ for (int i = 0, limit = pts->length(); i < limit; i++) {
+ java_lang_Class::print_signature(pts->obj_at(i), st);
+ }
+ st->print(")");
+ java_lang_Class::print_signature(rtype(mt), st);
+}
+
+Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
+ ResourceMark rm;
+ stringStream buffer(128);
+ print_signature(mt, &buffer);
+ const char* sigstr = buffer.base();
+ int siglen = (int) buffer.size();
+ Symbol *name;
+ if (!intern_if_not_found) {
+ name = SymbolTable::probe(sigstr, siglen);
+ } else {
+ name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
+ }
+ return name;
+}
+
+bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
+ if (mt1 == mt2)
+ return true;
+ if (rtype(mt1) != rtype(mt2))
+ return false;
+ if (ptype_count(mt1) != ptype_count(mt2))
+ return false;
+ for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
+ if (ptype(mt1, i) != ptype(mt2, i))
+ return false;
+ }
+ return true;
+}
+
+oop java_lang_invoke_MethodType::rtype(oop mt) {
+ assert(is_instance(mt), "must be a MethodType");
+ return mt->obj_field(_rtype_offset);
+}
+
+objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
+ assert(is_instance(mt), "must be a MethodType");
+ return (objArrayOop) mt->obj_field(_ptypes_offset);
+}
+
+oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
+ return ptypes(mt)->obj_at(idx);
+}
+
+int java_lang_invoke_MethodType::ptype_count(oop mt) {
+ return ptypes(mt)->length();
+}
+
+int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
+ objArrayOop pts = ptypes(mt);
+ int count = pts->length();
+ int slots = 0;
+ for (int i = 0; i < count; i++) {
+ BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
+ slots += type2size[bt];
+ }
+ return slots;
+}
+
+int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
+ BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
+ return type2size[bt];
+}
+
+
+// Support for java_lang_invoke_CallSite
+
+int java_lang_invoke_CallSite::_target_offset;
+int java_lang_invoke_CallSite::_context_offset;
+
+void java_lang_invoke_CallSite::compute_offsets() {
+ Klass* k = SystemDictionary::CallSite_klass();
+ if (k != NULL) {
+ compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
+ compute_offset(_context_offset, k, vmSymbols::context_name(),
+ vmSymbols::java_lang_invoke_MethodHandleNatives_CallSiteContext_signature());
+ }
+}
+
+oop java_lang_invoke_CallSite::context(oop call_site) {
+ assert(java_lang_invoke_CallSite::is_instance(call_site), "");
+
+ oop dep_oop = call_site->obj_field(_context_offset);
+ return dep_oop;
+}
+
+// Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
+
+int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
+
+void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
+ Klass* k = SystemDictionary::Context_klass();
+ if (k != NULL) {
+ CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
+ }
+}
+
+DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
+ assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
+ intptr_t* vmdeps_addr = (intptr_t*)call_site->address_field_addr(_vmdependencies_offset);
+ DependencyContext dep_ctx(vmdeps_addr);
+ return dep_ctx;
+}
+
+// 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;
+int java_security_AccessControlContext::_isAuthorized_offset = -1;
+
+void java_security_AccessControlContext::compute_offsets() {
+ assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
+ fieldDescriptor fd;
+ InstanceKlass* ik = 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();
+
+ // The offset may not be present for bootstrapping with older JDK.
+ if (ik->find_local_field(vmSymbols::isAuthorized_name(), vmSymbols::bool_signature(), &fd)) {
+ _isAuthorized_offset = fd.offset();
+ }
+}
+
+
+bool java_security_AccessControlContext::is_authorized(Handle context) {
+ assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
+ assert(_isAuthorized_offset != -1, "should be set");
+ return context->bool_field(_isAuthorized_offset) != 0;
+}
+
+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
+ SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
+ // Allocate result
+ oop result = 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);
+ // whitelist AccessControlContexts created by the JVM if present
+ if (_isAuthorized_offset != -1) {
+ result->bool_field_put(_isAuthorized_offset, true);
+ }
+ return result;
+}
+
+
+// Support for java_lang_ClassLoader
+
+bool java_lang_ClassLoader::offsets_computed = false;
+int java_lang_ClassLoader::_loader_data_offset = -1;
+int java_lang_ClassLoader::parallelCapable_offset = -1;
+int java_lang_ClassLoader::name_offset = -1;
+int java_lang_ClassLoader::unnamedModule_offset = -1;
+
+ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
+ assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
+ return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
+}
+
+ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
+ return *java_lang_ClassLoader::loader_data_addr(loader);
+}
+
+void java_lang_ClassLoader::compute_offsets() {
+ assert(!offsets_computed, "offsets should be initialized only once");
+ offsets_computed = true;
+
+ // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
+ Klass* k1 = SystemDictionary::ClassLoader_klass();
+ compute_optional_offset(parallelCapable_offset,
+ k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
+
+ compute_offset(name_offset,
+ k1, vmSymbols::name_name(), vmSymbols::string_signature());
+
+ compute_offset(unnamedModule_offset,
+ k1, vmSymbols::unnamedModule_name(), vmSymbols::module_signature());
+
+ CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
+}
+
+oop java_lang_ClassLoader::parent(oop loader) {
+ assert(is_instance(loader), "loader must be oop");
+ return loader->obj_field(parent_offset);
+}
+
+oop java_lang_ClassLoader::name(oop loader) {
+ assert(is_instance(loader), "loader must be oop");
+ return loader->obj_field(name_offset);
+}
+
+bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
+ assert(is_instance(loader), "loader must be oop");
+ assert(cl == NULL || is_instance(cl), "cl argument must be oop");
+ oop acl = loader;
+ debug_only(jint loop_count = 0);
+ // This loop taken verbatim from ClassLoader.java:
+ do {
+ acl = parent(acl);
+ if (cl == acl) {
+ return true;
+ }
+ assert(++loop_count > 0, "loop_count overflow");
+ } while (acl != NULL);
+ return false;
+}
+
+bool java_lang_ClassLoader::is_instance(oop obj) {
+ return obj != NULL && is_subclass(obj->klass());
+}
+
+
+// For class loader classes, parallelCapable defined
+// based on non-null field
+// Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
+bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
+ if (parallelCapable_offset == -1) {
+ // Default for backward compatibility is false
+ return false;
+ }
+ return (class_loader->obj_field(parallelCapable_offset) != NULL);
+}
+
+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;
+}
+
+// Return true if this is one of the class loaders associated with
+// the generated bytecodes for reflection.
+bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
+ if (loader != NULL) {
+ Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
+ // This might be null in non-1.4 JDKs
+ return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
+ }
+ return false;
+}
+
+oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
+ // 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.
+ if (is_reflection_class_loader(loader)) {
+ return parent(loader);
+ }
+ return loader;
+}
+
+oop java_lang_ClassLoader::unnamedModule(oop loader) {
+ assert(is_instance(loader), "loader must be oop");
+ return loader->obj_field(unnamedModule_offset);
+}
+
+// Support for java_lang_System
+int java_lang_System::in_offset_in_bytes() {
+ return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
+}
+
+
+int java_lang_System::out_offset_in_bytes() {
+ return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
+}
+
+
+int java_lang_System::err_offset_in_bytes() {
+ return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
+}
+
+
+bool java_lang_System::has_security_manager() {
+ InstanceKlass* ik = SystemDictionary::System_klass();
+ address addr = ik->static_field_addr(static_security_offset);
+ if (UseCompressedOops) {
+ return oopDesc::load_decode_heap_oop((narrowOop *)addr) != NULL;
+ } else {
+ return oopDesc::load_decode_heap_oop((oop*)addr) != NULL;
+ }
+}
+
+int java_lang_Class::_klass_offset;
+int java_lang_Class::_array_klass_offset;
+int java_lang_Class::_oop_size_offset;
+int java_lang_Class::_static_oop_field_count_offset;
+int java_lang_Class::_class_loader_offset;
+int java_lang_Class::_module_offset;
+int java_lang_Class::_protection_domain_offset;
+int java_lang_Class::_component_mirror_offset;
+int java_lang_Class::_init_lock_offset;
+int java_lang_Class::_signers_offset;
+GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
+GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
+int java_lang_Throwable::backtrace_offset;
+int java_lang_Throwable::detailMessage_offset;
+int java_lang_Throwable::stackTrace_offset;
+int java_lang_Throwable::depth_offset;
+int java_lang_Throwable::static_unassigned_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_Method::type_annotations_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_Constructor::type_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_reflect_Field::type_annotations_offset;
+int java_lang_reflect_Parameter::name_offset;
+int java_lang_reflect_Parameter::modifiers_offset;
+int java_lang_reflect_Parameter::index_offset;
+int java_lang_reflect_Parameter::executable_offset;
+int java_lang_boxing_object::value_offset;
+int java_lang_boxing_object::long_value_offset;
+int java_lang_ref_Reference::referent_offset;
+int java_lang_ref_Reference::queue_offset;
+int java_lang_ref_Reference::next_offset;
+int java_lang_ref_Reference::discovered_offset;
+int java_lang_ref_Reference::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::static_in_offset;
+int java_lang_System::static_out_offset;
+int java_lang_System::static_err_offset;
+int java_lang_System::static_security_offset;
+int java_lang_StackTraceElement::methodName_offset;
+int java_lang_StackTraceElement::fileName_offset;
+int java_lang_StackTraceElement::lineNumber_offset;
+int java_lang_StackTraceElement::moduleName_offset;
+int java_lang_StackTraceElement::moduleVersion_offset;
+int java_lang_StackTraceElement::classLoaderName_offset;
+int java_lang_StackTraceElement::declaringClass_offset;
+int java_lang_StackTraceElement::declaringClassObject_offset;
+int java_lang_StackFrameInfo::_declaringClass_offset;
+int java_lang_StackFrameInfo::_memberName_offset;
+int java_lang_StackFrameInfo::_bci_offset;
+int java_lang_StackFrameInfo::_version_offset;
+int java_lang_LiveStackFrameInfo::_monitors_offset;
+int java_lang_LiveStackFrameInfo::_locals_offset;
+int java_lang_LiveStackFrameInfo::_operands_offset;
+int java_lang_LiveStackFrameInfo::_mode_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 java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
+int reflect_ConstantPool::_oop_offset;
+int 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);
+}
+
+void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
+ element->obj_field_put(moduleName_offset, value);
+}
+
+void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
+ element->obj_field_put(moduleVersion_offset, value);
+}
+
+void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
+ element->obj_field_put(classLoaderName_offset, value);
+}
+
+void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
+ element->obj_field_put(declaringClassObject_offset, value);
+}
+
+// Support for java_lang_StackFrameInfo
+void java_lang_StackFrameInfo::set_declaringClass(oop element, oop value) {
+ element->obj_field_put(_declaringClass_offset, value);
+}
+
+void java_lang_StackFrameInfo::set_version(oop element, short value) {
+ element->short_field_put(_version_offset, value);
+}
+
+void java_lang_StackFrameInfo::set_bci(oop element, int value) {
+ element->int_field_put(_bci_offset, value);
+}
+
+void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
+ element->obj_field_put(_monitors_offset, value);
+}
+
+void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
+ element->obj_field_put(_locals_offset, value);
+}
+
+void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
+ element->obj_field_put(_operands_offset, value);
+}
+
+void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
+ element->int_field_put(_mode_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() {
+ Klass* k = SystemDictionary::nio_Buffer_klass();
+ assert(k != NULL, "must be loaded in 1.4+");
+ compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
+}
+
+void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
+ if (_owner_offset != 0) return;
+
+ SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
+ Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
+ compute_offset(_owner_offset, k,
+ vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
+}
+
+oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
+ assert(_owner_offset != 0, "Must be initialized");
+ return obj->obj_field(_owner_offset);
+}
+
+// Compute hard-coded offsets
+// Invoked before SystemDictionary::initialize, so pre-loaded classes
+// are not available to determine the offset_of_static_fields.
+void JavaClasses::compute_hard_coded_offsets() {
+ const int x = heapOopSize;
+ const int header = instanceOopDesc::base_offset_in_bytes();
+
+ // 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::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
+ java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
+
+ // java_lang_boxing_object
+ java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
+ java_lang_boxing_object::long_value_offset = align_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
+
+ // java_lang_ref_Reference:
+ java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
+ java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
+ java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
+ java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
+ // Artificial fields for java_lang_ref_Reference
+ // The first field is for the discovered field added in 1.4
+ java_lang_ref_Reference::number_of_fake_oop_fields = 1;
+
+ // java_lang_ref_SoftReference Class
+ java_lang_ref_SoftReference::timestamp_offset = align_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
+ // Don't multiply static fields because they are always in wordSize units
+ java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
+
+ // java_lang_ClassLoader
+ java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
+
+ // java_lang_System
+ java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
+ java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
+ java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
+ java_lang_System::static_security_offset = java_lang_System::hc_static_security_offset * x;
+
+ // java_lang_StackTraceElement
+ java_lang_StackTraceElement::declaringClassObject_offset = java_lang_StackTraceElement::hc_declaringClassObject_offset * x + header;
+ java_lang_StackTraceElement::classLoaderName_offset = java_lang_StackTraceElement::hc_classLoaderName_offset * x + header;
+ java_lang_StackTraceElement::moduleName_offset = java_lang_StackTraceElement::hc_moduleName_offset * x + header;
+ java_lang_StackTraceElement::moduleVersion_offset = java_lang_StackTraceElement::hc_moduleVersion_offset * x + header;
+ 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 was called earlier in bootstrap
+ java_lang_ClassLoader::compute_offsets();
+ java_lang_Throwable::compute_offsets();
+ java_lang_Thread::compute_offsets();
+ java_lang_ThreadGroup::compute_offsets();
+ java_lang_invoke_MethodHandle::compute_offsets();
+ java_lang_invoke_DirectMethodHandle::compute_offsets();
+ java_lang_invoke_MemberName::compute_offsets();
+ java_lang_invoke_ResolvedMethodName::compute_offsets();
+ java_lang_invoke_LambdaForm::compute_offsets();
+ java_lang_invoke_MethodType::compute_offsets();
+ java_lang_invoke_CallSite::compute_offsets();
+ java_lang_invoke_MethodHandleNatives_CallSiteContext::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();
+ java_nio_Buffer::compute_offsets();
+ reflect_ConstantPool::compute_offsets();
+ reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
+ java_lang_reflect_Parameter::compute_offsets();
+ java_lang_Module::compute_offsets();
+ java_lang_StackFrameInfo::compute_offsets();
+ java_lang_LiveStackFrameInfo::compute_offsets();
+
+ // generated interpreter code wants to know about the offsets we just computed:
+ AbstractAssembler::update_delayed_values();
+}
+
+#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;
+ TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
+ Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
+ InstanceKlass* ik = InstanceKlass::cast(k);
+ TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
+ TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
+ if (!ik->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;
+ TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
+ Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
+ InstanceKlass* ik = InstanceKlass::cast(k);
+ TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
+ TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
+ if (!ik->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 + InstanceMirrorKlass::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() - InstanceMirrorKlass::offset_of_static_fields());
+ return false;
+ }
+}
+
+
+bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
+ EXCEPTION_MARK;
+ fieldDescriptor fd;
+ TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
+ Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
+ InstanceKlass* ik = InstanceKlass::cast(k);
+ TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
+ TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
+ if (!ik->find_local_field(f_name, f_sig, &fd)) {
+ tty->print_cr("Static field %s.%s not found", klass_name, field_name);
+ return false;
+ }
+ if (!fd.is_static() || !fd.has_initial_value()) {
+ tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
+ return false;
+ }
+ if (!fd.initial_value_tag().is_int()) {
+ tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
+ return false;
+ }
+ jint field_value = fd.int_initial_value();
+ if (field_value == hardcoded_constant) {
+ return true;
+ } else {
+ tty->print_cr("Constant value of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_constant, field_value);
+ return false;
+ }
+}
+
+
+// Check the hard-coded field offsets of all the classes in this file
+
+void JavaClasses::check_offsets() {
+ bool valid = true;
+
+#define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
+ valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
+
+#define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
+ valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
+
+#define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
+ valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
+
+#define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
+ valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
+
+ // java.lang.String
+
+ CHECK_OFFSET("java/lang/String", java_lang_String, value, "[B");
+ CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
+ CHECK_OFFSET("java/lang/String", java_lang_String, coder, "B");
+
+ // 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
+
+ // 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, stackTrace, "[Ljava/lang/StackTraceElement;");
+ CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, depth, "I");
+
+ // Boxed primitive objects (java_lang_boxing_object)
+
+ CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
+ CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
+ CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
+ CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
+ CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
+ CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
+ CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
+ CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
+
+ // java.lang.ClassLoader
+
+ CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
+
+ // java.lang.System
+
+ CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
+ CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
+ CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
+ CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, security, "Ljava/lang/SecurityManager;");
+
+ // java.lang.StackTraceElement
+
+ CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClassObject, "Ljava/lang/Class;");
+ CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, classLoaderName, "Ljava/lang/String;");
+ CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, moduleName, "Ljava/lang/String;");
+ CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, moduleVersion, "Ljava/lang/String;");
+ 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;");
+
+ // 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) {
+ 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
+
+int InjectedField::compute_offset() {
+ InstanceKlass* ik = InstanceKlass::cast(klass());
+ for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
+ if (!may_be_java && !fs.access_flags().is_internal()) {
+ // Only look at injected fields
+ continue;
+ }
+ if (fs.name() == name() && fs.signature() == signature()) {
+ return fs.offset();
+ }
+ }
+ ResourceMark rm;
+ tty->print_cr("Invalid layout of %s at %s/%s%s", ik->external_name(), name()->as_C_string(), signature()->as_C_string(), may_be_java ? " (may_be_java)" : "");
+#ifndef PRODUCT
+ ik->print();
+ tty->print_cr("all fields:");
+ for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
+ tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
+ }
+#endif //PRODUCT
+ vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
+ return -1;
+}
+
+void javaClasses_init() {
+ JavaClasses::compute_offsets();
+ JavaClasses::check_offsets();
+ FilteredFieldsMap::initialize(); // must be done after computing offsets.
+}