author | coleenp |
Wed, 18 Apr 2018 18:43:04 -0400 | |
changeset 49824 | e242740a92b8 |
parent 49593 | 4dd58ecc9912 |
child 49931 | 840e26123940 |
permissions | -rw-r--r-- |
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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 "classfile/classLoader.hpp" |
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#include "classfile/classLoaderData.inline.hpp" |
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#include "classfile/sharedPathsMiscInfo.hpp" |
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#include "logging/log.hpp" |
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#include "logging/logStream.hpp" |
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#include "memory/allocation.inline.hpp" |
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#include "memory/metaspaceShared.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "runtime/arguments.hpp" |
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#include "runtime/os.inline.hpp" |
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#include "utilities/ostream.hpp" |
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SharedPathsMiscInfo::SharedPathsMiscInfo() { |
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_buf_size = INITIAL_BUF_SIZE; |
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_cur_ptr = _buf_start = NEW_C_HEAP_ARRAY(char, _buf_size, mtClass); |
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_allocated = true; |
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} |
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SharedPathsMiscInfo::~SharedPathsMiscInfo() { |
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if (_allocated) { |
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FREE_C_HEAP_ARRAY(char, _buf_start); |
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} |
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} |
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void SharedPathsMiscInfo::add_path(const char* path, int type) { |
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log_info(class, path)("type=%s ", type_name(type)); |
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ClassLoader::trace_class_path("add misc shared path ", path); |
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write(path, strlen(path) + 1); |
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write_jint(jint(type)); |
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} |
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void SharedPathsMiscInfo::ensure_size(size_t needed_bytes) { |
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assert(_allocated, "cannot modify buffer during validation."); |
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int used = get_used_bytes(); |
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int target = used + int(needed_bytes); |
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if (target > _buf_size) { |
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_buf_size = _buf_size * 2 + (int)needed_bytes; |
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_buf_start = REALLOC_C_HEAP_ARRAY(char, _buf_start, _buf_size, mtClass); |
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_cur_ptr = _buf_start + used; |
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_end_ptr = _buf_start + _buf_size; |
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} |
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} |
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void SharedPathsMiscInfo::write(const void* ptr, size_t size) { |
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ensure_size(size); |
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memcpy(_cur_ptr, ptr, size); |
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_cur_ptr += size; |
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} |
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bool SharedPathsMiscInfo::read(void* ptr, size_t size) { |
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if (_cur_ptr + size <= _end_ptr) { |
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memcpy(ptr, _cur_ptr, size); |
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_cur_ptr += size; |
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return true; |
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} |
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return false; |
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} |
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bool SharedPathsMiscInfo::fail(const char* msg, const char* name) { |
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ClassLoader::trace_class_path(msg, name); |
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MetaspaceShared::set_archive_loading_failed(); |
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return false; |
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} |
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void SharedPathsMiscInfo::print_path(outputStream* out, int type, const char* path) { |
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switch (type) { |
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case BOOT: |
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out->print("Expecting BOOT path=%s", path); |
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break; |
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case NON_EXIST: |
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out->print("Expecting that %s does not exist", path); |
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break; |
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default: |
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ShouldNotReachHere(); |
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} |
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} |
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bool SharedPathsMiscInfo::check() { |
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// The whole buffer must be 0 terminated so that we can use strlen and strcmp |
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// without fear. |
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_end_ptr -= sizeof(jint); |
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if (_cur_ptr >= _end_ptr) { |
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return fail("Truncated archive file header"); |
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} |
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if (*_end_ptr != 0) { |
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return fail("Corrupted archive file header"); |
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} |
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while (_cur_ptr < _end_ptr) { |
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jint type; |
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const char* path = _cur_ptr; |
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_cur_ptr += strlen(path) + 1; |
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if (!read_jint(&type)) { |
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return fail("Corrupted archive file header"); |
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} |
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LogTarget(Info, class, path) lt; |
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if (lt.is_enabled()) { |
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lt.print("type=%s ", type_name(type)); |
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LogStream ls(lt); |
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print_path(&ls, type, path); |
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ls.cr(); |
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} |
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if (!check(type, path)) { |
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if (!PrintSharedArchiveAndExit) { |
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return false; |
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} |
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} else { |
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ClassLoader::trace_class_path("ok"); |
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} |
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} |
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return true; |
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} |
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bool SharedPathsMiscInfo::check(jint type, const char* path) { |
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switch (type) { |
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case BOOT: |
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// In the future we should perform the check based on the content of the mapped archive. |
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if (UseAppCDS && os::file_name_strcmp(path, Arguments::get_sysclasspath()) != 0) { |
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return fail("[BOOT classpath mismatch, actual =", Arguments::get_sysclasspath()); |
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} |
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break; |
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case NON_EXIST: |
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{ |
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struct stat st; |
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if (os::stat(path, &st) == 0) { |
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// The file actually exists |
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// But we want it to not exist -> fail |
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return fail("File must not exist"); |
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} |
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} |
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break; |
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default: |
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return fail("Corrupted archive file header"); |
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} |
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return true; |
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} |