6578152: fill_region_with_object has usability and safety issues
Reviewed-by: apetrusenko, ysr
/* * Copyright 1997-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */# include "incls/_precompiled.incl"# include "incls/_symbolOop.cpp.incl"bool symbolOopDesc::equals(const char* str, int len) const { int l = utf8_length(); if (l != len) return false; while (l-- > 0) { if (str[l] != (char) byte_at(l)) return false; } assert(l == -1, "we should be at the beginning"); return true;}char* symbolOopDesc::as_C_string(char* buf, int size) const { if (size > 0) { int len = MIN2(size - 1, utf8_length()); for (int i = 0; i < len; i++) { buf[i] = byte_at(i); } buf[len] = '\0'; } return buf;}char* symbolOopDesc::as_C_string() const { int len = utf8_length(); char* str = NEW_RESOURCE_ARRAY(char, len + 1); return as_C_string(str, len + 1);}char* symbolOopDesc::as_C_string_flexible_buffer(Thread* t, char* buf, int size) const { char* str; int len = utf8_length(); int buf_len = len + 1; if (size < buf_len) { str = NEW_RESOURCE_ARRAY(char, buf_len); } else { str = buf; } return as_C_string(str, buf_len);}void symbolOopDesc::print_symbol_on(outputStream* st) { st = st ? st : tty; int length = UTF8::unicode_length((const char*)bytes(), utf8_length()); const char *ptr = (const char *)bytes(); jchar value; for (int index = 0; index < length; index++) { ptr = UTF8::next(ptr, &value); if (value >= 32 && value < 127 || value == '\'' || value == '\\') { st->put(value); } else { st->print("\\u%04x", value); } }}jchar* symbolOopDesc::as_unicode(int& length) const { symbolOopDesc* this_ptr = (symbolOopDesc*)this; length = UTF8::unicode_length((char*)this_ptr->bytes(), utf8_length()); jchar* result = NEW_RESOURCE_ARRAY(jchar, length); if (length > 0) { UTF8::convert_to_unicode((char*)this_ptr->bytes(), result, length); } return result;}const char* symbolOopDesc::as_klass_external_name(char* buf, int size) const { if (size > 0) { char* str = as_C_string(buf, size); int length = (int)strlen(str); // Turn all '/'s into '.'s (also for array klasses) for (int index = 0; index < length; index++) { if (str[index] == '/') { str[index] = '.'; } } return str; } else { return buf; }}const char* symbolOopDesc::as_klass_external_name() const { char* str = as_C_string(); int length = (int)strlen(str); // Turn all '/'s into '.'s (also for array klasses) for (int index = 0; index < length; index++) { if (str[index] == '/') { str[index] = '.'; } } return str;}