src/hotspot/share/prims/cdsoffsets.cpp
author iklam
Fri, 17 Aug 2018 13:53:53 -0700
changeset 51477 e77d7687c831
parent 49360 886acec3b4c6
child 54927 1512d88b24c6
permissions -rw-r--r--
8209657: Refactor filemap.hpp to simplify integration with Serviceability Agent Summary: Added src/hotspot/share/include/cds.h Reviewed-by: ccheung, sspitsyn, jgeorge
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/*
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 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "utilities/macros.hpp"
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#if INCLUDE_CDS
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#include "runtime/os.hpp"
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#include "memory/filemap.hpp"
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#include "memory/allocation.hpp"
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#include "memory/allocation.inline.hpp"
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#include "prims/cdsoffsets.hpp"
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CDSOffsets::CDSOffsets(const char* name, int offset, CDSOffsets* next) {
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  _name = NEW_C_HEAP_ARRAY(char, strlen(name) + 1, mtInternal);
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  strcpy(_name, name);
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  _offset = offset;
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  _next = next;
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}
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CDSOffsets* CDSOffsets::_all = NULL;
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#define ADD_NEXT(list, name, value) \
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  list->add_end(new CDSOffsets(name, value, NULL))
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#define CREATE_OFFSET_MAPS                                                                  \
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    _all = new CDSOffsets("size_t_size", sizeof(size_t), NULL);                             \
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    ADD_NEXT(_all, "FileMapHeader::_magic", offset_of(FileMapHeader, _magic));              \
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    ADD_NEXT(_all, "FileMapHeader::_crc", offset_of(FileMapHeader, _crc));                  \
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    ADD_NEXT(_all, "FileMapHeader::_version", offset_of(FileMapHeader, _version));          \
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    ADD_NEXT(_all, "FileMapHeader::_space[0]", offset_of(FileMapHeader, _space));           \
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    ADD_NEXT(_all, "CDSFileMapRegion::_crc", offset_of(CDSFileMapRegion, _crc));            \
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    ADD_NEXT(_all, "CDSFileMapRegion::_used", offset_of(CDSFileMapRegion, _used));          \
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    ADD_NEXT(_all, "FileMapHeader::_paths_misc_info_size", offset_of(FileMapHeader, _paths_misc_info_size)); \
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    ADD_NEXT(_all, "file_header_size", sizeof(FileMapHeader));                              \
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    ADD_NEXT(_all, "CDSFileMapRegion_size", sizeof(CDSFileMapRegion));
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int CDSOffsets::find_offset(const char* name) {
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  if (_all == NULL) {
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    CREATE_OFFSET_MAPS
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  }
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  CDSOffsets* it = _all;
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  while(it) {
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    if (!strcmp(name, it->get_name())) {
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      return it->get_offset();
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    }
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    it = it->next();
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  }
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  return -1; // not found
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}
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void CDSOffsets::add_end(CDSOffsets* n) {
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  CDSOffsets* p = this;
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  while(p && p->_next) { p = p->_next; }
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  p->_next = n;
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}
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#endif // INCLUDE_CDS