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 "prims/jvm.h"
  26 #include "utilities/decoder.hpp"
  27 
  28 #include <cxxabi.h>
  29 
  30 #ifdef __APPLE__
  31 
  32 void Decoder::initialize() {
  33   _initialized = true;
  34 }
  35 
  36 void Decoder::uninitialize() {
  37   _initialized = false;
  38 }
  39 
  40 bool Decoder::can_decode_C_frame_in_vm() {
  41   return false;
  42 }
  43 
  44 Decoder::decoder_status Decoder::decode(address addr, const char* filepath, char *buf, int buflen, int *offset) {
  45   return symbol_not_found;
  46 }
  47 
  48 
  49 #endif
  50 
  51 bool Decoder::demangle(const char* symbol, char *buf, int buflen) {
  52   int   status;
  53   char* result;
  54   size_t size = (size_t)buflen;
  55 
  56   // Don't pass buf to __cxa_demangle. In case of the 'buf' is too small,
  57   // __cxa_demangle will call system "realloc" for additional memory, which
  58   // may use different malloc/realloc mechanism that allocates 'buf'.
  59   if ((result = abi::__cxa_demangle(symbol, NULL, NULL, &status)) != NULL) {
  60     jio_snprintf(buf, buflen, "%s", result);
  61       // call c library's free
  62       ::free(result);
  63       return true;
  64   }
  65   return false;
  66 }