jdk8-mips64-public/hotspot: src/share/vm/classfile/sharedPathsMiscInfo.cpp@ac27a9c85bea (annotated)

src/share/vm/classfile/sharedPathsMiscInfo.cpp@ac27a9c85bea (annotated)

src/share/vm/classfile/sharedPathsMiscInfo.cpp

Thu, 24 May 2018 18:41:44 +0800

author: aoqi
date: Thu, 24 May 2018 18:41:44 +0800
changeset 8856: ac27a9c85bea
parent 8184: f46ffa934a46
permissions: -rw-r--r--

Merge

 /*
  * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "precompiled.hpp"
 #include "classfile/classLoader.hpp"
 #include "classfile/classLoaderData.inline.hpp"
 #include "classfile/sharedPathsMiscInfo.hpp"
 #include "memory/allocation.inline.hpp"
 #include "memory/metaspaceShared.hpp"
 #include "runtime/arguments.hpp"
 void SharedPathsMiscInfo::add_path(const char* path, int type) {
   if (TraceClassPaths) {
     tty->print("[type=%s] ", type_name(type));
     trace_class_path("[Add misc shared path ", path);
   }
   write(path, strlen(path) + 1);
   write_jint(jint(type));
 }
 void SharedPathsMiscInfo::ensure_size(size_t needed_bytes) {
   assert(_allocated, "cannot modify buffer during validation.");
   int used = get_used_bytes();
   int target = used + int(needed_bytes);
   if (target > _buf_size) {
     _buf_size = _buf_size * 2 + (int)needed_bytes;
     _buf_start = REALLOC_C_HEAP_ARRAY(char, _buf_start, _buf_size, mtClass);
     _cur_ptr = _buf_start + used;
     _end_ptr = _buf_start + _buf_size;
   }
 }
 void SharedPathsMiscInfo::write(const void* ptr, size_t size) {
   ensure_size(size);
   memcpy(_cur_ptr, ptr, size);
   _cur_ptr += size;
 }
 bool SharedPathsMiscInfo::read(void* ptr, size_t size) {
   if (_cur_ptr + size <= _end_ptr) {
     memcpy(ptr, _cur_ptr, size);
     _cur_ptr += size;
     return true;
   }
   return false;
 }
 bool SharedPathsMiscInfo::fail(const char* msg, const char* name) {
   ClassLoader::trace_class_path(tty, msg, name);
   MetaspaceShared::set_archive_loading_failed();
   return false;
 }
 bool SharedPathsMiscInfo::check() {
   // The whole buffer must be 0 terminated so that we can use strlen and strcmp
   // without fear.
   _end_ptr -= sizeof(jint);
   if (_cur_ptr >= _end_ptr) {
     return fail("Truncated archive file header");
   }
   if (*_end_ptr != 0) {
     return fail("Corrupted archive file header");
   }
   while (_cur_ptr < _end_ptr) {
     jint type;
     const char* path = _cur_ptr;
     _cur_ptr += strlen(path) + 1;
     if (!read_jint(&type)) {
       return fail("Corrupted archive file header");
     }
     if (TraceClassPaths) {
       tty->print("[type=%s ", type_name(type));
       print_path(tty, type, path);
       tty->print_cr("]");
     }
     if (!check(type, path)) {
       if (!PrintSharedArchiveAndExit) {
         return false;
       }
     } else {
       trace_class_path("[ok");
     }
   }
   return true;
 }
 bool SharedPathsMiscInfo::check(jint type, const char* path) {
   switch (type) {
   case BOOT:
     if (strcmp(path, Arguments::get_sysclasspath()) != 0) {
       return fail("[BOOT classpath mismatch, actual: -Dsun.boot.class.path=", Arguments::get_sysclasspath());
     }
     break;
   case NON_EXIST: // fall-through
   case REQUIRED:
     {
       struct stat st;
       if (os::stat(path, &st) != 0) {
         // The file does not actually exist
         if (type == REQUIRED) {
           // but we require it to exist -> fail
           return fail("Required file doesn't exist");
         }
       } else {
         // The file actually exists
         if (type == NON_EXIST) {
           // But we want it to not exist -> fail
           return fail("File must not exist");
         }
         time_t    timestamp;
         long      filesize;
         if (!read_time(&timestamp) || !read_long(&filesize)) {
           return fail("Corrupted archive file header");
         }
         if (timestamp != st.st_mtime) {
           return fail("Timestamp mismatch");
         }
         if (filesize != st.st_size) {
           return fail("File size mismatch");
         }
       }
     }
     break;
   default:
     return fail("Corrupted archive file header");
   }
   return true;
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/classfile/sharedPathsMiscInfo.cpp@ac27a9c85bea (annotated)

src/share/vm/classfile/sharedPathsMiscInfo.cpp