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 #include "incls/_precompiled.incl"
  26 #include "incls/_vtableStubs.cpp.incl"














  27 
  28 // -----------------------------------------------------------------------------------------
  29 // Implementation of VtableStub
  30 
  31 address VtableStub::_chunk             = NULL;
  32 address VtableStub::_chunk_end         = NULL;
  33 VMReg   VtableStub::_receiver_location = VMRegImpl::Bad();
  34 
  35 static int num_vtable_chunks = 0;
  36 
  37 
  38 void* VtableStub::operator new(size_t size, int code_size) {
  39   assert(size == sizeof(VtableStub), "mismatched size");
  40   num_vtable_chunks++;
  41   // compute real VtableStub size (rounded to nearest word)
  42   const int real_size = round_to(code_size + sizeof(VtableStub), wordSize);
  43   // malloc them in chunks to minimize header overhead
  44   const int chunk_factor = 32;
  45   if (_chunk == NULL || _chunk + real_size > _chunk_end) {
  46     const int bytes = chunk_factor * real_size + pd_code_alignment();

   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 #include "precompiled.hpp"
  26 #include "code/vtableStubs.hpp"
  27 #include "compiler/disassembler.hpp"
  28 #include "memory/allocation.inline.hpp"
  29 #include "memory/resourceArea.hpp"
  30 #include "oops/instanceKlass.hpp"
  31 #include "oops/klassVtable.hpp"
  32 #include "oops/oop.inline.hpp"
  33 #include "prims/forte.hpp"
  34 #include "prims/jvmtiExport.hpp"
  35 #include "runtime/handles.inline.hpp"
  36 #include "runtime/mutexLocker.hpp"
  37 #include "runtime/sharedRuntime.hpp"
  38 #ifdef COMPILER2
  39 #include "opto/matcher.hpp"
  40 #endif
  41 
  42 // -----------------------------------------------------------------------------------------
  43 // Implementation of VtableStub
  44 
  45 address VtableStub::_chunk             = NULL;
  46 address VtableStub::_chunk_end         = NULL;
  47 VMReg   VtableStub::_receiver_location = VMRegImpl::Bad();
  48 
  49 static int num_vtable_chunks = 0;
  50 
  51 
  52 void* VtableStub::operator new(size_t size, int code_size) {
  53   assert(size == sizeof(VtableStub), "mismatched size");
  54   num_vtable_chunks++;
  55   // compute real VtableStub size (rounded to nearest word)
  56   const int real_size = round_to(code_size + sizeof(VtableStub), wordSize);
  57   // malloc them in chunks to minimize header overhead
  58   const int chunk_factor = 32;
  59   if (_chunk == NULL || _chunk + real_size > _chunk_end) {
  60     const int bytes = chunk_factor * real_size + pd_code_alignment();