1 /*
   2  * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   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/_symbolKlass.cpp.incl"





  27 
  28 symbolOop symbolKlass::allocate_symbol(u1* name, int len, TRAPS) {
  29   // Don't allow symbol oops to be created which cannot fit in a symbolOop.
  30   if (len > symbolOopDesc::max_length()) {
  31     THROW_MSG_0(vmSymbols::java_lang_InternalError(),
  32                 "name is too long to represent");
  33   }
  34   int size = symbolOopDesc::object_size(len);
  35   symbolKlassHandle h_k(THREAD, as_klassOop());
  36   symbolOop sym = (symbolOop)
  37     CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL);
  38   assert(!sym->is_parsable(), "not expecting parsability yet.");
  39   No_Safepoint_Verifier no_safepoint;
  40   sym->set_utf8_length(len);
  41   for (int i = 0; i < len; i++) {
  42     sym->byte_at_put(i, name[i]);
  43   }
  44   // Let the first emptySymbol be created and
  45   // ensure only one is ever created.
  46   assert(sym->is_parsable() || Universe::emptySymbol() == NULL,

   1 /*
   2  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   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 "classfile/symbolTable.hpp"
  27 #include "memory/gcLocker.hpp"
  28 #include "oops/oop.inline.hpp"
  29 #include "oops/symbolKlass.hpp"
  30 #include "oops/symbolOop.hpp"
  31 #include "runtime/handles.inline.hpp"
  32 
  33 symbolOop symbolKlass::allocate_symbol(u1* name, int len, TRAPS) {
  34   // Don't allow symbol oops to be created which cannot fit in a symbolOop.
  35   if (len > symbolOopDesc::max_length()) {
  36     THROW_MSG_0(vmSymbols::java_lang_InternalError(),
  37                 "name is too long to represent");
  38   }
  39   int size = symbolOopDesc::object_size(len);
  40   symbolKlassHandle h_k(THREAD, as_klassOop());
  41   symbolOop sym = (symbolOop)
  42     CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL);
  43   assert(!sym->is_parsable(), "not expecting parsability yet.");
  44   No_Safepoint_Verifier no_safepoint;
  45   sym->set_utf8_length(len);
  46   for (int i = 0; i < len; i++) {
  47     sym->byte_at_put(i, name[i]);
  48   }
  49   // Let the first emptySymbol be created and
  50   // ensure only one is ever created.
  51   assert(sym->is_parsable() || Universe::emptySymbol() == NULL,