1 /*
   2  * Copyright (c) 2001, 2011, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 //Definitions of our util functions
  27 
  28 void* must_malloc(size_t size);
  29 #ifndef USE_MTRACE
  30 #define mtrace(c, ptr, size)
  31 #else
  32 void mtrace(char c, void* ptr, size_t size);
  33 #endif
  34 
  35 // <math.h> may have defined OVERFLOW as a non-standard extension
  36 #undef OVERFLOW
  37 // overflow management
  38 #define OVERFLOW ((uint)-1)
  39 #define PSIZE_MAX (OVERFLOW/2)  /* normal size limit */
  40 
  41 inline size_t scale_size(size_t size, size_t scale) {
  42   return (size > PSIZE_MAX / scale) ? OVERFLOW : size * scale;
  43 }
  44 
  45 inline size_t add_size(size_t size1, size_t size2) {
  46   return ((size1 | size2 | (size1 + size2)) > PSIZE_MAX)
  47     ? OVERFLOW
  48     : size1 + size2;
  49 }
  50 
  51 inline size_t add_size(size_t size1, size_t size2, int size3) {
  52   return add_size(add_size(size1, size2), size3);
  53 }
  54 
  55 // These may be expensive, because they have to go via Java TSD,
  56 // if the optional u argument is missing.
  57 struct unpacker;
  58 extern void unpack_abort(const char* msg, unpacker* u = null);
  59 extern bool unpack_aborting(unpacker* u = null);
  60 
  61 #ifndef PRODUCT
  62 inline bool endsWith(const char* str, const char* suf) {
  63   size_t len1 = strlen(str);
  64   size_t len2 = strlen(suf);
  65   return (len1 > len2 && 0 == strcmp(str + (len1-len2), suf));
  66 }
  67 #endif
  68 
  69 void mkdirs(int oklen, char* path);