rev 50307 : [mq]: cont

   1 /*
   2  * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_CLASSFILE_JAVACLASSES_INLINE_HPP
  26 #define SHARE_VM_CLASSFILE_JAVACLASSES_INLINE_HPP
  27 
  28 #include "classfile/javaClasses.hpp"
  29 #include "oops/access.inline.hpp"
  30 #include "oops/oop.inline.hpp"
  31 #include "oops/oopsHierarchy.hpp"
  32 #include "oops/typeArrayOop.inline.hpp"
  33 
  34 void java_lang_String::set_coder(oop string, jbyte coder) {
  35   assert(initialized && (coder_offset > 0), "Must be initialized");
  36   string->byte_field_put(coder_offset, coder);
  37 }
  38 
  39 void java_lang_String::set_value_raw(oop string, typeArrayOop buffer) {
  40   assert(initialized, "Must be initialized");
  41   string->obj_field_put_raw(value_offset, buffer);
  42 }
  43 void java_lang_String::set_value(oop string, typeArrayOop buffer) {
  44   assert(initialized && (value_offset > 0), "Must be initialized");
  45   string->obj_field_put(value_offset, (oop)buffer);
  46 }
  47 void java_lang_String::set_hash(oop string, unsigned int hash) {
  48   assert(initialized && (hash_offset > 0), "Must be initialized");
  49   string->int_field_put(hash_offset, hash);
  50 }
  51 
  52 // Accessors
  53 typeArrayOop java_lang_String::value(oop java_string) {
  54   assert(initialized && (value_offset > 0), "Must be initialized");
  55   assert(is_instance(java_string), "must be java_string");
  56   return (typeArrayOop) java_string->obj_field(value_offset);
  57 }
  58 typeArrayOop java_lang_String::value_no_keepalive(oop java_string) {
  59   assert(initialized && (value_offset > 0), "Must be initialized");
  60   assert(is_instance(java_string), "must be java_string");
  61   return (typeArrayOop) java_string->obj_field_access<AS_NO_KEEPALIVE>(value_offset);
  62 }
  63 unsigned int java_lang_String::hash(oop java_string) {
  64   assert(initialized && (hash_offset > 0), "Must be initialized");
  65   assert(is_instance(java_string), "must be java_string");
  66   return java_string->int_field(hash_offset);
  67 }
  68 bool java_lang_String::is_latin1(oop java_string) {
  69   assert(initialized && (coder_offset > 0), "Must be initialized");
  70   assert(is_instance(java_string), "must be java_string");
  71   jbyte coder = java_string->byte_field(coder_offset);
  72   assert(CompactStrings || coder == CODER_UTF16, "Must be UTF16 without CompactStrings");
  73   return coder == CODER_LATIN1;
  74 }
  75 int java_lang_String::length(oop java_string) {
  76   assert(initialized, "Must be initialized");
  77   assert(is_instance(java_string), "must be java_string");
  78   typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
  79   if (value == NULL) {
  80     return 0;
  81   }
  82   int arr_length = value->length();
  83   if (!is_latin1(java_string)) {
  84     assert((arr_length & 1) == 0, "should be even for UTF16 string");
  85     arr_length >>= 1; // convert number of bytes to number of elements
  86   }
  87   return arr_length;
  88 }
  89 
  90 bool java_lang_String::is_instance_inlined(oop obj) {
  91   return obj != NULL && obj->klass() == SystemDictionary::String_klass();
  92 }
  93 
  94 // Accessors
  95 oop java_lang_ref_Reference::referent(oop ref) {
  96   return ref->obj_field(referent_offset);
  97 }
  98 void java_lang_ref_Reference::set_referent(oop ref, oop value) {
  99   ref->obj_field_put(referent_offset, value);
 100 }
 101 void java_lang_ref_Reference::set_referent_raw(oop ref, oop value) {
 102   ref->obj_field_put_raw(referent_offset, value);
 103 }
 104 HeapWord* java_lang_ref_Reference::referent_addr_raw(oop ref) {
 105   return ref->obj_field_addr_raw<HeapWord>(referent_offset);
 106 }
 107 oop java_lang_ref_Reference::next(oop ref) {
 108   return ref->obj_field(next_offset);
 109 }
 110 void java_lang_ref_Reference::set_next(oop ref, oop value) {
 111   ref->obj_field_put(next_offset, value);
 112 }
 113 void java_lang_ref_Reference::set_next_raw(oop ref, oop value) {
 114   ref->obj_field_put_raw(next_offset, value);
 115 }
 116 HeapWord* java_lang_ref_Reference::next_addr_raw(oop ref) {
 117   return ref->obj_field_addr_raw<HeapWord>(next_offset);
 118 }
 119 oop java_lang_ref_Reference::discovered(oop ref) {
 120   return ref->obj_field(discovered_offset);
 121 }
 122 void java_lang_ref_Reference::set_discovered(oop ref, oop value) {
 123   ref->obj_field_put(discovered_offset, value);
 124 }
 125 void java_lang_ref_Reference::set_discovered_raw(oop ref, oop value) {
 126   ref->obj_field_put_raw(discovered_offset, value);
 127 }
 128 HeapWord* java_lang_ref_Reference::discovered_addr_raw(oop ref) {
 129   return ref->obj_field_addr_raw<HeapWord>(discovered_offset);
 130 }
 131 bool java_lang_ref_Reference::is_phantom(oop ref) {
 132   return InstanceKlass::cast(ref->klass())->reference_type() == REF_PHANTOM;
 133 }
 134 
 135 inline oop java_lang_Continuation::scope(oop ref) {
 136   return ref->obj_field(scope_offset);
 137 }
 138 inline oop java_lang_Continuation::target(oop ref) {
 139   return ref->obj_field(target_offset);
 140 }
 141 inline oop java_lang_Continuation::parent(oop ref) {
 142   return ref->obj_field(parent_offset);
 143 }
 144 inline typeArrayOop java_lang_Continuation::stack(oop ref) {
 145   oop a = ref->obj_field(stack_offset);
 146   return (typeArrayOop)a;
 147 }
 148 inline objArrayOop java_lang_Continuation::refStack(oop ref) {
 149   oop a = ref->obj_field(refStack_offset);
 150   return (objArrayOop)a;
 151 }
 152 inline jlong java_lang_Continuation::fp(oop ref) {
 153   return ref->long_field(fp_offset);
 154 }
 155 inline void java_lang_Continuation::set_fp(oop ref, const jlong i) {
 156   ref->long_field_put(fp_offset, i);
 157 }
 158 inline jint java_lang_Continuation::sp(oop ref) {
 159   return ref->int_field(sp_offset);
 160 }
 161 inline void java_lang_Continuation::set_sp(oop ref, const jint i) {
 162   ref->int_field_put(sp_offset, i);
 163 }
 164 inline void* java_lang_Continuation::pc(oop ref) {
 165   return (void*)ref->long_field(pc_offset);
 166 }
 167 inline void java_lang_Continuation::set_pc(oop ref, const void* pc) {
 168   ref->long_field_put(pc_offset, (long)pc);
 169 }
 170 inline jint java_lang_Continuation::refSP(oop ref) {
 171   return ref->int_field(refSP_offset);
 172 }
 173 inline void java_lang_Continuation::set_refSP(oop ref, jint i) {
 174   ref->int_field_put(refSP_offset, i);
 175 }
 176 inline intptr_t* java_lang_Continuation::entrySP(oop ref) {
 177   return (intptr_t*)ref->long_field(entrySP_offset);
 178 }
 179 inline void java_lang_Continuation::set_entrySP(oop ref, intptr_t* sp) {
 180   ref->long_field_put(entrySP_offset, (long)sp);
 181 }
 182 inline intptr_t* java_lang_Continuation::entryFP(oop ref) {
 183   return (intptr_t*)ref->long_field(entryFP_offset);
 184 }
 185 inline void java_lang_Continuation::set_entryFP(oop ref, intptr_t* fp) {
 186   ref->long_field_put(entryFP_offset, (long)fp);
 187 }
 188 inline address java_lang_Continuation::entryPC(oop ref) {
 189   return (address)ref->long_field(entryPC_offset);
 190 }
 191 inline void java_lang_Continuation::set_entryPC(oop ref, address pc) {
 192   ref->long_field_put(entryPC_offset, (long)pc);
 193 }
 194 inline jint java_lang_Continuation::maxSize(oop ref) {
 195   return ref->int_field(maxSize_offset);
 196 }
 197 inline void java_lang_Continuation::set_maxSize(oop ref, jint i) {
 198   ref->int_field_put(maxSize_offset, i);
 199 }
 200 inline unsigned char java_lang_Continuation::flags(oop ref) {
 201   return (unsigned char)ref->byte_field(flags_offset);
 202 }
 203 inline void java_lang_Continuation::set_flags(oop ref, unsigned char flags) {
 204   ref->byte_field_put(flags_offset, (jbyte)flags);
 205 }
 206 inline jshort java_lang_Continuation::numFrames(oop ref) {
 207   return ref->short_field(numFrames_offset);
 208 }
 209 inline void java_lang_Continuation::set_numFrames(oop ref, jshort i) {
 210   ref->short_field_put(numFrames_offset, i);
 211 }
 212 inline jshort java_lang_Continuation::numInterpretedFrames(oop ref) {
 213   return ref->short_field(numInterpretedFrames_offset);
 214 }
 215 inline void java_lang_Continuation::set_numInterpretedFrames(oop ref, jshort i) {
 216   ref->short_field_put(numInterpretedFrames_offset, i);
 217 }
 218 inline int java_lang_Continuation::stack_size(oop ref) {
 219   return stack(ref)->length() * 4;
 220 }
 221 inline void* java_lang_Continuation::stack_base(oop ref) {
 222   return stack(ref)->base(T_INT);
 223 }
 224 inline HeapWord* java_lang_Continuation::refStack_base(oop ref) {
 225   return refStack(ref)->base();
 226 }
 227 
 228 inline void java_lang_invoke_CallSite::set_target_volatile(oop site, oop target) {
 229   site->obj_field_put_volatile(_target_offset, target);
 230 }
 231 
 232 inline oop  java_lang_invoke_CallSite::target(oop site) {
 233   return site->obj_field(_target_offset);
 234 }
 235 
 236 inline void java_lang_invoke_CallSite::set_target(oop site, oop target) {
 237   site->obj_field_put(_target_offset, target);
 238 }
 239 
 240 inline bool java_lang_invoke_CallSite::is_instance(oop obj) {
 241   return obj != NULL && is_subclass(obj->klass());
 242 }
 243 
 244 inline bool java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(oop obj) {
 245   return obj != NULL && is_subclass(obj->klass());
 246 }
 247 
 248 inline bool java_lang_invoke_MemberName::is_instance(oop obj) {
 249   return obj != NULL && obj->klass() == SystemDictionary::MemberName_klass();
 250 }
 251 
 252 inline bool java_lang_invoke_ResolvedMethodName::is_instance(oop obj) {
 253   return obj != NULL && obj->klass() == SystemDictionary::ResolvedMethodName_klass();
 254 }
 255 
 256 inline bool java_lang_invoke_MethodType::is_instance(oop obj) {
 257   return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass();
 258 }
 259 
 260 inline bool java_lang_invoke_MethodHandle::is_instance(oop obj) {
 261   return obj != NULL && is_subclass(obj->klass());
 262 }
 263 
 264 inline bool java_lang_Class::is_instance(oop obj) {
 265   return obj != NULL && obj->klass() == SystemDictionary::Class_klass();
 266 }
 267 
 268 inline bool java_lang_invoke_DirectMethodHandle::is_instance(oop obj) {
 269   return obj != NULL && is_subclass(obj->klass());
 270 }
 271 
 272 inline bool java_lang_Module::is_instance(oop obj) {
 273   return obj != NULL && obj->klass() == SystemDictionary::Module_klass();
 274 }
 275 
 276 inline int Backtrace::merge_bci_and_version(int bci, int version) {
 277   // only store u2 for version, checking for overflow.
 278   if (version > USHRT_MAX || version < 0) version = USHRT_MAX;
 279   assert((jushort)bci == bci, "bci should be short");
 280   return build_int_from_shorts(version, bci);
 281 }
 282 
 283 inline int Backtrace::merge_mid_and_cpref(int mid, int cpref) {
 284   // only store u2 for mid and cpref, checking for overflow.
 285   assert((jushort)mid == mid, "mid should be short");
 286   assert((jushort)cpref == cpref, "cpref should be short");
 287   return build_int_from_shorts(cpref, mid);
 288 }
 289 
 290 inline int Backtrace::bci_at(unsigned int merged) {
 291   return extract_high_short_from_int(merged);
 292 }
 293 
 294 inline int Backtrace::version_at(unsigned int merged) {
 295   return extract_low_short_from_int(merged);
 296 }
 297 
 298 inline int Backtrace::mid_at(unsigned int merged) {
 299   return extract_high_short_from_int(merged);
 300 }
 301 
 302 inline int Backtrace::cpref_at(unsigned int merged) {
 303   return extract_low_short_from_int(merged);
 304 }
 305 
 306 inline int Backtrace::get_line_number(const methodHandle& method, int bci) {
 307   int line_number = 0;
 308   if (method->is_native()) {
 309     // Negative value different from -1 below, enabling Java code in
 310     // class java.lang.StackTraceElement to distinguish "native" from
 311     // "no LineNumberTable".  JDK tests for -2.
 312     line_number = -2;
 313   } else {
 314     // Returns -1 if no LineNumberTable, and otherwise actual line number
 315     line_number = method->line_number_from_bci(bci);
 316     if (line_number == -1 && ShowHiddenFrames) {
 317       line_number = bci + 1000000;
 318     }
 319   }
 320   return line_number;
 321 }
 322 
 323 inline Symbol* Backtrace::get_source_file_name(InstanceKlass* holder, int version) {
 324   // RedefineClasses() currently permits redefine operations to
 325   // happen in parallel using a "last one wins" philosophy. That
 326   // spec laxness allows the constant pool entry associated with
 327   // the source_file_name_index for any older constant pool version
 328   // to be unstable so we shouldn't try to use it.
 329   if (holder->constants()->version() != version) {
 330     return NULL;
 331   } else {
 332     return holder->source_file_name();
 333   }
 334 }
 335 
 336 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_INLINE_HPP
--- EOF ---