20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "classfile/systemDictionary.hpp"
  27 #include "compiler/compilerOracle.hpp"
  28 #include "interpreter/bytecode.hpp"
  29 #include "interpreter/bytecodeStream.hpp"
  30 #include "interpreter/linkResolver.hpp"
  31 #include "memory/heapInspection.hpp"
  32 #include "memory/metaspaceClosure.hpp"
  33 #include "memory/resourceArea.hpp"
  34 #include "oops/methodData.inline.hpp"
  35 #include "prims/jvmtiRedefineClasses.hpp"
  36 #include "runtime/arguments.hpp"
  37 #include "runtime/compilationPolicy.hpp"
  38 #include "runtime/deoptimization.hpp"
  39 #include "runtime/handles.inline.hpp"

  40 #include "runtime/orderAccess.hpp"
  41 #include "runtime/safepointVerifiers.hpp"
  42 #include "utilities/align.hpp"
  43 #include "utilities/copy.hpp"
  44 
  45 // ==================================================================
  46 // DataLayout
  47 //
  48 // Overlay for generic profiling data.
  49 
  50 // Some types of data layouts need a length field.
  51 bool DataLayout::needs_array_len(u1 tag) {
  52   return (tag == multi_branch_data_tag) || (tag == arg_info_data_tag) || (tag == parameters_type_data_tag);
  53 }
  54 
  55 // Perform generic initialization of the data.  More specific
  56 // initialization occurs in overrides of ProfileData::post_initialize.
  57 void DataLayout::initialize(u1 tag, u2 bci, int cell_count) {
  58   _header._bits = (intptr_t)0;
  59   _header._struct._tag = tag;

  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "classfile/systemDictionary.hpp"
  27 #include "compiler/compilerOracle.hpp"
  28 #include "interpreter/bytecode.hpp"
  29 #include "interpreter/bytecodeStream.hpp"
  30 #include "interpreter/linkResolver.hpp"
  31 #include "memory/heapInspection.hpp"
  32 #include "memory/metaspaceClosure.hpp"
  33 #include "memory/resourceArea.hpp"
  34 #include "oops/methodData.inline.hpp"
  35 #include "prims/jvmtiRedefineClasses.hpp"
  36 #include "runtime/arguments.hpp"
  37 #include "runtime/compilationPolicy.hpp"
  38 #include "runtime/deoptimization.hpp"
  39 #include "runtime/handles.inline.hpp"
  40 #include "runtime/mutexLocker.inline.hpp"
  41 #include "runtime/orderAccess.hpp"
  42 #include "runtime/safepointVerifiers.hpp"
  43 #include "utilities/align.hpp"
  44 #include "utilities/copy.hpp"
  45 
  46 // ==================================================================
  47 // DataLayout
  48 //
  49 // Overlay for generic profiling data.
  50 
  51 // Some types of data layouts need a length field.
  52 bool DataLayout::needs_array_len(u1 tag) {
  53   return (tag == multi_branch_data_tag) || (tag == arg_info_data_tag) || (tag == parameters_type_data_tag);
  54 }
  55 
  56 // Perform generic initialization of the data.  More specific
  57 // initialization occurs in overrides of ProfileData::post_initialize.
  58 void DataLayout::initialize(u1 tag, u2 bci, int cell_count) {
  59   _header._bits = (intptr_t)0;
  60   _header._struct._tag = tag;