remove _code_end_offset

Author: bulasevich

src/hotspot/share/code/codeBlob.cpp

@@ -78,7 +78,6 @@ CodeBlob::CodeBlob(const char* name, CodeBlobKind kind, CodeBuffer* cb, int size
   _relocation_size(align_up(cb->total_relocation_size(), oopSize)),
   _content_offset(CodeBlob::align_code_offset(header_size)),
   _code_offset(_content_offset + cb->total_offset_of(cb->insts())),
-  _code_end_offset(_content_offset + align_up(cb->total_content_size(), oopSize)),
   _frame_size(frame_size),
   S390_ONLY(_ctable_offset(0) COMMA)
   _header_size(header_size),
@@ -91,7 +90,8 @@ CodeBlob::CodeBlob(const char* name, CodeBlobKind kind, CodeBuffer* cb, int size
   assert(is_aligned(_size,            oopSize), "unaligned size");
   assert(is_aligned(header_size,      oopSize), "unaligned size");
   assert(is_aligned(_relocation_size, oopSize), "unaligned size");
-  assert(_code_end_offset <= _size, "codeBlob is too small: %d > %d", _code_end_offset, _size);
+  int code_end_offset = _content_offset + align_up(cb->total_content_size(), oopSize);
+  assert(code_end_offset == _size, "wrong codeBlob size: %d != %d", _size, code_end_offset);
   assert(code_end() == content_end(), "must be the same - see code_end()");
 #ifdef COMPILER1
   // probably wrong for tiered
@@ -119,7 +119,6 @@ CodeBlob::CodeBlob(const char* name, CodeBlobKind kind, int size, uint16_t heade
   _relocation_size(0),
   _content_offset(CodeBlob::align_code_offset(header_size)),
   _code_offset(_content_offset),
-  _code_end_offset(size),
   _frame_size(0),
   S390_ONLY(_ctable_offset(0) COMMA)
   _header_size(header_size),

src/hotspot/share/code/codeBlob.hpp

@@ -108,7 +108,6 @@ class CodeBlob {
   int      _relocation_size;       // size of relocation (could be bigger than 64Kb)
   int      _content_offset;        // offset to where content region begins (this includes consts, insts, stubs)
   int      _code_offset;           // offset to where instructions region begins (this includes insts, stubs)
-  int      _code_end_offset;       // offset to where code region ends
   int      _frame_size;            // size of stack frame in words (NOT slots. On x64 these are 64bit words)
 
   S390_ONLY(int _ctable_offset;)
@@ -183,11 +182,10 @@ class CodeBlob {
   relocInfo* relocation_begin() const         { return (relocInfo*)_mutable_data; }
   relocInfo* relocation_end() const           { return (relocInfo*)((address)relocation_begin() + _relocation_size); }
   address    content_begin() const            { return (address)    header_begin() + _content_offset; }
-  address    content_end() const              { return (address)    header_begin() + _code_end_offset; }
+  address    content_end() const              { return (address)    header_begin() + _size; }
   address    code_begin() const               { return (address)    header_begin() + _code_offset; }
-  // code_end == content_end is true for all types of blobs for now, it is also checked in the constructor
-  address    code_end() const                 { return (address)    header_begin() + _code_end_offset; }
-  address    blob_end() const                 { return (address) header_begin() + _size; }
+  address    code_end() const                 { return (address)    header_begin() + _size; }
+  address    blob_end() const                 { return (address)    header_begin() + _size; }
 
   // [relocations, oops, metatada, jvmci_data] stays in _mutable_data
   address    mdata_begin() const              { return mutable_data_begin(); }
@@ -212,7 +210,6 @@ class CodeBlob {
   // Only used from CodeCache::free_unused_tail() after the Interpreter blob was trimmed
   void adjust_size(size_t used) {
     _size = (int)used;
-    _code_end_offset = (int)used;
   }
 
   // Containment

src/hotspot/share/runtime/vmStructs.cpp

@@ -556,7 +556,6 @@
   nonstatic_field(CodeBlob,                    _content_offset,                               int)                                   \
   nonstatic_field(CodeBlob,                    _code_offset,                                  int)                                   \
   nonstatic_field(CodeBlob,                    _frame_complete_offset,                        int16_t)                               \
-  nonstatic_field(CodeBlob,                    _code_end_offset,                              int)                                   \
   nonstatic_field(CodeBlob,                    _frame_size,                                   int)                                   \
   nonstatic_field(CodeBlob,                    _oop_maps,                                     ImmutableOopMapSet*)                   \
   nonstatic_field(CodeBlob,                    _caller_must_gc_arguments,                     bool)                                  \

src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/code/CodeBlob.java

@@ -70,7 +70,6 @@ private static void initialize(TypeDataBase db) {
     contentOffsetField       = type.getCIntegerField("_content_offset");
     codeOffsetField          = type.getCIntegerField("_code_offset");
     frameCompleteOffsetField = new CIntField(type.getCIntegerField("_frame_complete_offset"), 0);
-    codeEndOffsetField       = type.getCIntegerField("_code_end_offset");
     frameSizeField           = type.getCIntegerField("_frame_size");
     oopMapsField             = type.getAddressField("_oop_maps");
     mutableDataField         = type.getAddressField("_mutable_data");