gdr / tuntox (public) (License: GPLv3) (since 2017-01-24) (hash sha1)
Tunnel TCP connections over the Tox protocol

/utlist.h (b5f3f04c104785a57d8280c37c1b19b36068e56e) (55882 bytes) (mode 100644) (type blob)

/*
Copyright (c) 2007-2014, Troy D. Hanson   http://troydhanson.github.com/uthash/
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef UTLIST_H
#define UTLIST_H

#define UTLIST_VERSION 1.9.9

#include <assert.h>

/*
 * This file contains macros to manipulate singly and doubly-linked lists.
 *
 * 1. LL_ macros:  singly-linked lists.
 * 2. DL_ macros:  doubly-linked lists.
 * 3. CDL_ macros: circular doubly-linked lists.
 *
 * To use singly-linked lists, your structure must have a "next" pointer.
 * To use doubly-linked lists, your structure must "prev" and "next" pointers.
 * Either way, the pointer to the head of the list must be initialized to NULL.
 *
 * ----------------.EXAMPLE -------------------------
 * struct item {
 *      int id;
 *      struct item *prev, *next;
 * }
 *
 * struct item *list = NULL:
 *
 * int main() {
 *      struct item *item;
 *      ... allocate and populate item ...
 *      DL_APPEND(list, item);
 * }
 * --------------------------------------------------
 *
 * For doubly-linked lists, the append and delete macros are O(1)
 * For singly-linked lists, append and delete are O(n) but prepend is O(1)
 * The sort macro is O(n log(n)) for all types of single/double/circular lists.
 */

/* These macros use decltype or the earlier __typeof GNU extension.
   As decltype is only available in newer compilers (VS2010 or gcc 4.3+
   when compiling c++ code), this code uses whatever method is needed
   or, for VS2008 where neither is available, uses casting workarounds. */
#ifdef _MSC_VER            /* MS compiler */
#if _MSC_VER >= 1600 && defined(__cplusplus)  /* VS2010 or newer in C++ mode */
#define LDECLTYPE(x) decltype(x)
#else                     /* VS2008 or older (or VS2010 in C mode) */
#define NO_DECLTYPE
#define LDECLTYPE(x) char*
#endif
#elif defined(__ICCARM__)
#define NO_DECLTYPE
#define LDECLTYPE(x) char*
#else                      /* GNU, Sun and other compilers */
#define LDECLTYPE(x) __typeof(x)
#endif

/* for VS2008 we use some workarounds to get around the lack of decltype,
 * namely, we always reassign our tmp variable to the list head if we need
 * to dereference its prev/next pointers, and save/restore the real head.*/
#ifdef NO_DECLTYPE
#define _SV(elt,list) _tmp = (char*)(list); {char **_alias = (char**)&(list); *_alias = (elt); }
#define _NEXT(elt,list,next) ((char*)((list)->next))
#define _NEXTASGN(elt,list,to,next) { char **_alias = (char**)&((list)->next); *_alias=(char*)(to); }
/* #define _PREV(elt,list,prev) ((char*)((list)->prev)) */
#define _PREVASGN(elt,list,to,prev) { char **_alias = (char**)&((list)->prev); *_alias=(char*)(to); }
#define _RS(list) { char **_alias = (char**)&(list); *_alias=_tmp; }
#define _CASTASGN(a,b) { char **_alias = (char**)&(a); *_alias=(char*)(b); }
#else
#define _SV(elt,list)
#define _NEXT(elt,list,next) ((elt)->next)
#define _NEXTASGN(elt,list,to,next) ((elt)->next)=(to)
/* #define _PREV(elt,list,prev) ((elt)->prev) */
#define _PREVASGN(elt,list,to,prev) ((elt)->prev)=(to)
#define _RS(list)
#define _CASTASGN(a,b) (a)=(b)
#endif

/******************************************************************************
 * The sort macro is an adaptation of Simon Tatham's O(n log(n)) mergesort    *
 * Unwieldy variable names used here to avoid shadowing passed-in variables.  *
 *****************************************************************************/
#define LL_SORT(list, cmp)                                                                     \
    LL_SORT2(list, cmp, next)

#define LL_SORT2(list, cmp, next)                                                              \
do {                                                                                           \
  LDECLTYPE(list) _ls_p;                                                                       \
  LDECLTYPE(list) _ls_q;                                                                       \
  LDECLTYPE(list) _ls_e;                                                                       \
  LDECLTYPE(list) _ls_tail;                                                                    \
  int _ls_insize, _ls_nmerges, _ls_psize, _ls_qsize, _ls_i, _ls_looping;                       \
  if (list) {                                                                                  \
    _ls_insize = 1;                                                                            \
    _ls_looping = 1;                                                                           \
    while (_ls_looping) {                                                                      \
      _CASTASGN(_ls_p,list);                                                                   \
      list = NULL;                                                                             \
      _ls_tail = NULL;                                                                         \
      _ls_nmerges = 0;                                                                         \
      while (_ls_p) {                                                                          \
        _ls_nmerges++;                                                                         \
        _ls_q = _ls_p;                                                                         \
        _ls_psize = 0;                                                                         \
        for (_ls_i = 0; _ls_i < _ls_insize; _ls_i++) {                                         \
          _ls_psize++;                                                                         \
          _SV(_ls_q,list); _ls_q = _NEXT(_ls_q,list,next); _RS(list);                          \
          if (!_ls_q) break;                                                                   \
        }                                                                                      \
        _ls_qsize = _ls_insize;                                                                \
        while (_ls_psize > 0 || (_ls_qsize > 0 && _ls_q)) {                                    \
          if (_ls_psize == 0) {                                                                \
            _ls_e = _ls_q; _SV(_ls_q,list); _ls_q =                                            \
              _NEXT(_ls_q,list,next); _RS(list); _ls_qsize--;                                  \
          } else if (_ls_qsize == 0 || !_ls_q) {                                               \
            _ls_e = _ls_p; _SV(_ls_p,list); _ls_p =                                            \
              _NEXT(_ls_p,list,next); _RS(list); _ls_psize--;                                  \
          } else if (cmp(_ls_p,_ls_q) <= 0) {                                                  \
            _ls_e = _ls_p; _SV(_ls_p,list); _ls_p =                                            \
              _NEXT(_ls_p,list,next); _RS(list); _ls_psize--;                                  \
          } else {                                                                             \
            _ls_e = _ls_q; _SV(_ls_q,list); _ls_q =                                            \
              _NEXT(_ls_q,list,next); _RS(list); _ls_qsize--;                                  \
          }                                                                                    \
          if (_ls_tail) {                                                                      \
            _SV(_ls_tail,list); _NEXTASGN(_ls_tail,list,_ls_e,next); _RS(list);                \
          } else {                                                                             \
            _CASTASGN(list,_ls_e);                                                             \
          }                                                                                    \
          _ls_tail = _ls_e;                                                                    \
        }                                                                                      \
        _ls_p = _ls_q;                                                                         \
      }                                                                                        \
      if (_ls_tail) {                                                                          \
        _SV(_ls_tail,list); _NEXTASGN(_ls_tail,list,NULL,next); _RS(list);                     \
      }                                                                                        \
      if (_ls_nmerges <= 1) {                                                                  \
        _ls_looping=0;                                                                         \
      }                                                                                        \
      _ls_insize *= 2;                                                                         \
    }                                                                                          \
  }                                                                                            \
} while (0)


#define DL_SORT(list, cmp)                                                                     \
    DL_SORT2(list, cmp, prev, next)

#define DL_SORT2(list, cmp, prev, next)                                                        \
do {                                                                                           \
  LDECLTYPE(list) _ls_p;                                                                       \
  LDECLTYPE(list) _ls_q;                                                                       \
  LDECLTYPE(list) _ls_e;                                                                       \
  LDECLTYPE(list) _ls_tail;                                                                    \
  int _ls_insize, _ls_nmerges, _ls_psize, _ls_qsize, _ls_i, _ls_looping;                       \
  if (list) {                                                                                  \
    _ls_insize = 1;                                                                            \
    _ls_looping = 1;                                                                           \
    while (_ls_looping) {                                                                      \
      _CASTASGN(_ls_p,list);                                                                   \
      list = NULL;                                                                             \
      _ls_tail = NULL;                                                                         \
      _ls_nmerges = 0;                                                                         \
      while (_ls_p) {                                                                          \
        _ls_nmerges++;                                                                         \
        _ls_q = _ls_p;                                                                         \
        _ls_psize = 0;                                                                         \
        for (_ls_i = 0; _ls_i < _ls_insize; _ls_i++) {                                         \
          _ls_psize++;                                                                         \
          _SV(_ls_q,list); _ls_q = _NEXT(_ls_q,list,next); _RS(list);                          \
          if (!_ls_q) break;                                                                   \
        }                                                                                      \
        _ls_qsize = _ls_insize;                                                                \
        while (_ls_psize > 0 || (_ls_qsize > 0 && _ls_q)) {                                    \
          if (_ls_psize == 0) {                                                                \
            _ls_e = _ls_q; _SV(_ls_q,list); _ls_q =                                            \
              _NEXT(_ls_q,list,next); _RS(list); _ls_qsize--;                                  \
          } else if (_ls_qsize == 0 || !_ls_q) {                                               \
            _ls_e = _ls_p; _SV(_ls_p,list); _ls_p =                                            \
              _NEXT(_ls_p,list,next); _RS(list); _ls_psize--;                                  \
          } else if (cmp(_ls_p,_ls_q) <= 0) {                                                  \
            _ls_e = _ls_p; _SV(_ls_p,list); _ls_p =                                            \
              _NEXT(_ls_p,list,next); _RS(list); _ls_psize--;                                  \
          } else {                                                                             \
            _ls_e = _ls_q; _SV(_ls_q,list); _ls_q =                                            \
              _NEXT(_ls_q,list,next); _RS(list); _ls_qsize--;                                  \
          }                                                                                    \
          if (_ls_tail) {                                                                      \
            _SV(_ls_tail,list); _NEXTASGN(_ls_tail,list,_ls_e,next); _RS(list);                \
          } else {                                                                             \
            _CASTASGN(list,_ls_e);                                                             \
          }                                                                                    \
          _SV(_ls_e,list); _PREVASGN(_ls_e,list,_ls_tail,prev); _RS(list);                     \
          _ls_tail = _ls_e;                                                                    \
        }                                                                                      \
        _ls_p = _ls_q;                                                                         \
      }                                                                                        \
      _CASTASGN(list->prev, _ls_tail);                                                         \
      _SV(_ls_tail,list); _NEXTASGN(_ls_tail,list,NULL,next); _RS(list);                       \
      if (_ls_nmerges <= 1) {                                                                  \
        _ls_looping=0;                                                                         \
      }                                                                                        \
      _ls_insize *= 2;                                                                         \
    }                                                                                          \
  }                                                                                            \
} while (0)

#define CDL_SORT(list, cmp)                                                                    \
    CDL_SORT2(list, cmp, prev, next)

#define CDL_SORT2(list, cmp, prev, next)                                                       \
do {                                                                                           \
  LDECLTYPE(list) _ls_p;                                                                       \
  LDECLTYPE(list) _ls_q;                                                                       \
  LDECLTYPE(list) _ls_e;                                                                       \
  LDECLTYPE(list) _ls_tail;                                                                    \
  LDECLTYPE(list) _ls_oldhead;                                                                 \
  LDECLTYPE(list) _tmp;                                                                        \
  int _ls_insize, _ls_nmerges, _ls_psize, _ls_qsize, _ls_i, _ls_looping;                       \
  if (list) {                                                                                  \
    _ls_insize = 1;                                                                            \
    _ls_looping = 1;                                                                           \
    while (_ls_looping) {                                                                      \
      _CASTASGN(_ls_p,list);                                                                   \
      _CASTASGN(_ls_oldhead,list);                                                             \
      list = NULL;                                                                             \
      _ls_tail = NULL;                                                                         \
      _ls_nmerges = 0;                                                                         \
      while (_ls_p) {                                                                          \
        _ls_nmerges++;                                                                         \
        _ls_q = _ls_p;                                                                         \
        _ls_psize = 0;                                                                         \
        for (_ls_i = 0; _ls_i < _ls_insize; _ls_i++) {                                         \
          _ls_psize++;                                                                         \
          _SV(_ls_q,list);                                                                     \
          if (_NEXT(_ls_q,list,next) == _ls_oldhead) {                                         \
            _ls_q = NULL;                                                                      \
          } else {                                                                             \
            _ls_q = _NEXT(_ls_q,list,next);                                                    \
          }                                                                                    \
          _RS(list);                                                                           \
          if (!_ls_q) break;                                                                   \
        }                                                                                      \
        _ls_qsize = _ls_insize;                                                                \
        while (_ls_psize > 0 || (_ls_qsize > 0 && _ls_q)) {                                    \
          if (_ls_psize == 0) {                                                                \
            _ls_e = _ls_q; _SV(_ls_q,list); _ls_q =                                            \
              _NEXT(_ls_q,list,next); _RS(list); _ls_qsize--;                                  \
            if (_ls_q == _ls_oldhead) { _ls_q = NULL; }                                        \
          } else if (_ls_qsize == 0 || !_ls_q) {                                               \
            _ls_e = _ls_p; _SV(_ls_p,list); _ls_p =                                            \
              _NEXT(_ls_p,list,next); _RS(list); _ls_psize--;                                  \
            if (_ls_p == _ls_oldhead) { _ls_p = NULL; }                                        \
          } else if (cmp(_ls_p,_ls_q) <= 0) {                                                  \
            _ls_e = _ls_p; _SV(_ls_p,list); _ls_p =                                            \
              _NEXT(_ls_p,list,next); _RS(list); _ls_psize--;                                  \
            if (_ls_p == _ls_oldhead) { _ls_p = NULL; }                                        \
          } else {                                                                             \
            _ls_e = _ls_q; _SV(_ls_q,list); _ls_q =                                            \
              _NEXT(_ls_q,list,next); _RS(list); _ls_qsize--;                                  \
            if (_ls_q == _ls_oldhead) { _ls_q = NULL; }                                        \
          }                                                                                    \
          if (_ls_tail) {                                                                      \
            _SV(_ls_tail,list); _NEXTASGN(_ls_tail,list,_ls_e,next); _RS(list);                \
          } else {                                                                             \
            _CASTASGN(list,_ls_e);                                                             \
          }                                                                                    \
          _SV(_ls_e,list); _PREVASGN(_ls_e,list,_ls_tail,prev); _RS(list);                     \
          _ls_tail = _ls_e;                                                                    \
        }                                                                                      \
        _ls_p = _ls_q;                                                                         \
      }                                                                                        \
      _CASTASGN(list->prev,_ls_tail);                                                          \
      _CASTASGN(_tmp,list);                                                                    \
      _SV(_ls_tail,list); _NEXTASGN(_ls_tail,list,_tmp,next); _RS(list);                       \
      if (_ls_nmerges <= 1) {                                                                  \
        _ls_looping=0;                                                                         \
      }                                                                                        \
      _ls_insize *= 2;                                                                         \
    }                                                                                          \
  }                                                                                            \
} while (0)

/******************************************************************************
 * singly linked list macros (non-circular)                                   *
 *****************************************************************************/
#define LL_PREPEND(head,add)                                                                   \
    LL_PREPEND2(head,add,next)

#define LL_PREPEND2(head,add,next)                                                             \
do {                                                                                           \
  (add)->next = head;                                                                          \
  head = add;                                                                                  \
} while (0)

#define LL_CONCAT(head1,head2)                                                                 \
    LL_CONCAT2(head1,head2,next)

#define LL_CONCAT2(head1,head2,next)                                                           \
do {                                                                                           \
  LDECLTYPE(head1) _tmp;                                                                       \
  if (head1) {                                                                                 \
    _tmp = head1;                                                                              \
    while (_tmp->next) { _tmp = _tmp->next; }                                                  \
    _tmp->next=(head2);                                                                        \
  } else {                                                                                     \
    (head1)=(head2);                                                                           \
  }                                                                                            \
} while (0)

#define LL_APPEND(head,add)                                                                    \
    LL_APPEND2(head,add,next)

#define LL_APPEND2(head,add,next)                                                              \
do {                                                                                           \
  LDECLTYPE(head) _tmp;                                                                        \
  (add)->next=NULL;                                                                            \
  if (head) {                                                                                  \
    _tmp = head;                                                                               \
    while (_tmp->next) { _tmp = _tmp->next; }                                                  \
    _tmp->next=(add);                                                                          \
  } else {                                                                                     \
    (head)=(add);                                                                              \
  }                                                                                            \
} while (0)

#define LL_DELETE(head,del)                                                                    \
    LL_DELETE2(head,del,next)

#define LL_DELETE2(head,del,next)                                                              \
do {                                                                                           \
  LDECLTYPE(head) _tmp;                                                                        \
  if ((head) == (del)) {                                                                       \
    (head)=(head)->next;                                                                       \
  } else {                                                                                     \
    _tmp = head;                                                                               \
    while (_tmp->next && (_tmp->next != (del))) {                                              \
      _tmp = _tmp->next;                                                                       \
    }                                                                                          \
    if (_tmp->next) {                                                                          \
      _tmp->next = ((del)->next);                                                              \
    }                                                                                          \
  }                                                                                            \
} while (0)

/* Here are VS2008 replacements for LL_APPEND and LL_DELETE */
#define LL_APPEND_VS2008(head,add)                                                             \
    LL_APPEND2_VS2008(head,add,next)

#define LL_APPEND2_VS2008(head,add,next)                                                       \
do {                                                                                           \
  if (head) {                                                                                  \
    (add)->next = head;     /* use add->next as a temp variable */                             \
    while ((add)->next->next) { (add)->next = (add)->next->next; }                             \
    (add)->next->next=(add);                                                                   \
  } else {                                                                                     \
    (head)=(add);                                                                              \
  }                                                                                            \
  (add)->next=NULL;                                                                            \
} while (0)

#define LL_DELETE_VS2008(head,del)                                                             \
    LL_DELETE2_VS2008(head,del,next)

#define LL_DELETE2_VS2008(head,del,next)                                                       \
do {                                                                                           \
  if ((head) == (del)) {                                                                       \
    (head)=(head)->next;                                                                       \
  } else {                                                                                     \
    char *_tmp = (char*)(head);                                                                \
    while ((head)->next && ((head)->next != (del))) {                                          \
      head = (head)->next;                                                                     \
    }                                                                                          \
    if ((head)->next) {                                                                        \
      (head)->next = ((del)->next);                                                            \
    }                                                                                          \
    {                                                                                          \
      char **_head_alias = (char**)&(head);                                                    \
      *_head_alias = _tmp;                                                                     \
    }                                                                                          \
  }                                                                                            \
} while (0)
#ifdef NO_DECLTYPE
#undef LL_APPEND
#define LL_APPEND LL_APPEND_VS2008
#undef LL_DELETE
#define LL_DELETE LL_DELETE_VS2008
#undef LL_DELETE2
#define LL_DELETE2 LL_DELETE2_VS2008
#undef LL_APPEND2
#define LL_APPEND2 LL_APPEND2_VS2008
#undef LL_CONCAT /* no LL_CONCAT_VS2008 */
#undef DL_CONCAT /* no DL_CONCAT_VS2008 */
#endif
/* end VS2008 replacements */

#define LL_COUNT(head,el,counter)                                                              \
    LL_COUNT2(head,el,counter,next)                                                            \

#define LL_COUNT2(head,el,counter,next)                                                        \
{                                                                                              \
    counter = 0;                                                                               \
    LL_FOREACH2(head,el,next){ ++counter; }                                                    \
}

#define LL_FOREACH(head,el)                                                                    \
    LL_FOREACH2(head,el,next)

#define LL_FOREACH2(head,el,next)                                                              \
    for(el=head;el;el=(el)->next)

#define LL_FOREACH_SAFE(head,el,tmp)                                                           \
    LL_FOREACH_SAFE2(head,el,tmp,next)

#define LL_FOREACH_SAFE2(head,el,tmp,next)                                                     \
  for((el)=(head);(el) && (tmp = (el)->next, 1); (el) = tmp)

#define LL_SEARCH_SCALAR(head,out,field,val)                                                   \
    LL_SEARCH_SCALAR2(head,out,field,val,next)

#define LL_SEARCH_SCALAR2(head,out,field,val,next)                                             \
do {                                                                                           \
    LL_FOREACH2(head,out,next) {                                                               \
      if ((out)->field == (val)) break;                                                        \
    }                                                                                          \
} while(0)

#define LL_SEARCH(head,out,elt,cmp)                                                            \
    LL_SEARCH2(head,out,elt,cmp,next)

#define LL_SEARCH2(head,out,elt,cmp,next)                                                      \
do {                                                                                           \
    LL_FOREACH2(head,out,next) {                                                               \
      if ((cmp(out,elt))==0) break;                                                            \
    }                                                                                          \
} while(0)

#define LL_REPLACE_ELEM(head, el, add)                                                         \
do {                                                                                           \
 LDECLTYPE(head) _tmp;                                                                         \
 assert(head != NULL);                                                                         \
 assert(el != NULL);                                                                           \
 assert(add != NULL);                                                                          \
 (add)->next = (el)->next;                                                                     \
 if ((head) == (el)) {                                                                         \
  (head) = (add);                                                                              \
 } else {                                                                                      \
  _tmp = head;                                                                                 \
  while (_tmp->next && (_tmp->next != (el))) {                                                 \
   _tmp = _tmp->next;                                                                          \
  }                                                                                            \
  if (_tmp->next) {                                                                            \
    _tmp->next = (add);                                                                        \
  }                                                                                            \
 }                                                                                             \
} while (0)

#define LL_PREPEND_ELEM(head, el, add)                                                         \
do {                                                                                           \
 LDECLTYPE(head) _tmp;                                                                         \
 assert(head != NULL);                                                                         \
 assert(el != NULL);                                                                           \
 assert(add != NULL);                                                                          \
 (add)->next = (el);                                                                           \
 if ((head) == (el)) {                                                                         \
  (head) = (add);                                                                              \
 } else {                                                                                      \
  _tmp = head;                                                                                 \
  while (_tmp->next && (_tmp->next != (el))) {                                                 \
   _tmp = _tmp->next;                                                                          \
  }                                                                                            \
  if (_tmp->next) {                                                                            \
    _tmp->next = (add);                                                                        \
  }                                                                                            \
 }                                                                                             \
} while (0)                                                                                    \


/******************************************************************************
 * doubly linked list macros (non-circular)                                   *
 *****************************************************************************/
#define DL_PREPEND(head,add)                                                                   \
    DL_PREPEND2(head,add,prev,next)

#define DL_PREPEND2(head,add,prev,next)                                                        \
do {                                                                                           \
 (add)->next = head;                                                                           \
 if (head) {                                                                                   \
   (add)->prev = (head)->prev;                                                                 \
   (head)->prev = (add);                                                                       \
 } else {                                                                                      \
   (add)->prev = (add);                                                                        \
 }                                                                                             \
 (head) = (add);                                                                               \
} while (0)

#define DL_APPEND(head,add)                                                                    \
    DL_APPEND2(head,add,prev,next)

#define DL_APPEND2(head,add,prev,next)                                                         \
do {                                                                                           \
  if (head) {                                                                                  \
      (add)->prev = (head)->prev;                                                              \
      (head)->prev->next = (add);                                                              \
      (head)->prev = (add);                                                                    \
      (add)->next = NULL;                                                                      \
  } else {                                                                                     \
      (head)=(add);                                                                            \
      (head)->prev = (head);                                                                   \
      (head)->next = NULL;                                                                     \
  }                                                                                            \
} while (0)

#define DL_CONCAT(head1,head2)                                                                 \
    DL_CONCAT2(head1,head2,prev,next)

#define DL_CONCAT2(head1,head2,prev,next)                                                      \
do {                                                                                           \
  LDECLTYPE(head1) _tmp;                                                                       \
  if (head2) {                                                                                 \
    if (head1) {                                                                               \
        _tmp = (head2)->prev;                                                                  \
        (head2)->prev = (head1)->prev;                                                         \
        (head1)->prev->next = (head2);                                                         \
        (head1)->prev = _tmp;                                                                  \
    } else {                                                                                   \
        (head1)=(head2);                                                                       \
    }                                                                                          \
  }                                                                                            \
} while (0)

#define DL_DELETE(head,del)                                                                    \
    DL_DELETE2(head,del,prev,next)

#define DL_DELETE2(head,del,prev,next)                                                         \
do {                                                                                           \
  assert((del)->prev != NULL);                                                                 \
  if ((del)->prev == (del)) {                                                                  \
      (head)=NULL;                                                                             \
  } else if ((del)==(head)) {                                                                  \
      (del)->next->prev = (del)->prev;                                                         \
      (head) = (del)->next;                                                                    \
  } else {                                                                                     \
      (del)->prev->next = (del)->next;                                                         \
      if ((del)->next) {                                                                       \
          (del)->next->prev = (del)->prev;                                                     \
      } else {                                                                                 \
          (head)->prev = (del)->prev;                                                          \
      }                                                                                        \
  }                                                                                            \
} while (0)

#define DL_COUNT(head,el,counter)                                                              \
    DL_COUNT2(head,el,counter,next)                                                            \

#define DL_COUNT2(head,el,counter,next)                                                        \
{                                                                                              \
    counter = 0;                                                                               \
    DL_FOREACH2(head,el,next){ ++counter; }                                                    \
}

#define DL_FOREACH(head,el)                                                                    \
    DL_FOREACH2(head,el,next)

#define DL_FOREACH2(head,el,next)                                                              \
    for(el=head;el;el=(el)->next)

/* this version is safe for deleting the elements during iteration */
#define DL_FOREACH_SAFE(head,el,tmp)                                                           \
    DL_FOREACH_SAFE2(head,el,tmp,next)

#define DL_FOREACH_SAFE2(head,el,tmp,next)                                                     \
  for((el)=(head);(el) && (tmp = (el)->next, 1); (el) = tmp)

/* these are identical to their singly-linked list counterparts */
#define DL_SEARCH_SCALAR LL_SEARCH_SCALAR
#define DL_SEARCH LL_SEARCH
#define DL_SEARCH_SCALAR2 LL_SEARCH_SCALAR2
#define DL_SEARCH2 LL_SEARCH2

#define DL_REPLACE_ELEM(head, el, add)                                                         \
do {                                                                                           \
 assert(head != NULL);                                                                         \
 assert(el != NULL);                                                                           \
 assert(add != NULL);                                                                          \
 if ((head) == (el)) {                                                                         \
  (head) = (add);                                                                              \
  (add)->next = (el)->next;                                                                    \
  if ((el)->next == NULL) {                                                                    \
   (add)->prev = (add);                                                                        \
  } else {                                                                                     \
   (add)->prev = (el)->prev;                                                                   \
   (add)->next->prev = (add);                                                                  \
  }                                                                                            \
 } else {                                                                                      \
  (add)->next = (el)->next;                                                                    \
  (add)->prev = (el)->prev;                                                                    \
  (add)->prev->next = (add);                                                                   \
  if ((el)->next == NULL) {                                                                    \
   (head)->prev = (add);                                                                       \
  } else {                                                                                     \
   (add)->next->prev = (add);                                                                  \
  }                                                                                            \
 }                                                                                             \
} while (0)

#define DL_PREPEND_ELEM(head, el, add)                                                         \
do {                                                                                           \
 assert(head != NULL);                                                                         \
 assert(el != NULL);                                                                           \
 assert(add != NULL);                                                                          \
 (add)->next = (el);                                                                           \
 (add)->prev = (el)->prev;                                                                     \
 (el)->prev = (add);                                                                           \
 if ((head) == (el)) {                                                                         \
  (head) = (add);                                                                              \
 } else {                                                                                      \
  (add)->prev->next = (add);                                                                   \
 }                                                                                             \
} while (0)                                                                                    \


/******************************************************************************
 * circular doubly linked list macros                                         *
 *****************************************************************************/
#define CDL_PREPEND(head,add)                                                                  \
    CDL_PREPEND2(head,add,prev,next)

#define CDL_PREPEND2(head,add,prev,next)                                                       \
do {                                                                                           \
 if (head) {                                                                                   \
   (add)->prev = (head)->prev;                                                                 \
   (add)->next = (head);                                                                       \
   (head)->prev = (add);                                                                       \
   (add)->prev->next = (add);                                                                  \
 } else {                                                                                      \
   (add)->prev = (add);                                                                        \
   (add)->next = (add);                                                                        \
 }                                                                                             \
(head)=(add);                                                                                  \
} while (0)

#define CDL_DELETE(head,del)                                                                   \
    CDL_DELETE2(head,del,prev,next)

#define CDL_DELETE2(head,del,prev,next)                                                        \
do {                                                                                           \
  if ( ((head)==(del)) && ((head)->next == (head))) {                                          \
      (head) = 0L;                                                                             \
  } else {                                                                                     \
     (del)->next->prev = (del)->prev;                                                          \
     (del)->prev->next = (del)->next;                                                          \
     if ((del) == (head)) (head)=(del)->next;                                                  \
  }                                                                                            \
} while (0)

#define CDL_COUNT(head,el,counter)                                                             \
    CDL_COUNT2(head,el,counter,next)                                                           \

#define CDL_COUNT2(head, el, counter,next)                                                     \
{                                                                                              \
    counter = 0;                                                                               \
    CDL_FOREACH2(head,el,next){ ++counter; }                                                   \
}

#define CDL_FOREACH(head,el)                                                                   \
    CDL_FOREACH2(head,el,next)

#define CDL_FOREACH2(head,el,next)                                                             \
    for(el=head;el;el=((el)->next==head ? 0L : (el)->next))

#define CDL_FOREACH_SAFE(head,el,tmp1,tmp2)                                                    \
    CDL_FOREACH_SAFE2(head,el,tmp1,tmp2,prev,next)

#define CDL_FOREACH_SAFE2(head,el,tmp1,tmp2,prev,next)                                         \
  for((el)=(head), ((tmp1)=(head)?((head)->prev):NULL);                                        \
      (el) && ((tmp2)=(el)->next, 1);                                                          \
      ((el) = (((el)==(tmp1)) ? 0L : (tmp2))))

#define CDL_SEARCH_SCALAR(head,out,field,val)                                                  \
    CDL_SEARCH_SCALAR2(head,out,field,val,next)

#define CDL_SEARCH_SCALAR2(head,out,field,val,next)                                            \
do {                                                                                           \
    CDL_FOREACH2(head,out,next) {                                                              \
      if ((out)->field == (val)) break;                                                        \
    }                                                                                          \
} while(0)

#define CDL_SEARCH(head,out,elt,cmp)                                                           \
    CDL_SEARCH2(head,out,elt,cmp,next)

#define CDL_SEARCH2(head,out,elt,cmp,next)                                                     \
do {                                                                                           \
    CDL_FOREACH2(head,out,next) {                                                              \
      if ((cmp(out,elt))==0) break;                                                            \
    }                                                                                          \
} while(0)

#define CDL_REPLACE_ELEM(head, el, add)                                                        \
do {                                                                                           \
 assert(head != NULL);                                                                         \
 assert(el != NULL);                                                                           \
 assert(add != NULL);                                                                          \
 if ((el)->next == (el)) {                                                                     \
  (add)->next = (add);                                                                         \
  (add)->prev = (add);                                                                         \
  (head) = (add);                                                                              \
 } else {                                                                                      \
  (add)->next = (el)->next;                                                                    \
  (add)->prev = (el)->prev;                                                                    \
  (add)->next->prev = (add);                                                                   \
  (add)->prev->next = (add);                                                                   \
  if ((head) == (el)) {                                                                        \
   (head) = (add);                                                                             \
  }                                                                                            \
 }                                                                                             \
} while (0)

#define CDL_PREPEND_ELEM(head, el, add)                                                        \
do {                                                                                           \
 assert(head != NULL);                                                                         \
 assert(el != NULL);                                                                           \
 assert(add != NULL);                                                                          \
 (add)->next = (el);                                                                           \
 (add)->prev = (el)->prev;                                                                     \
 (el)->prev = (add);                                                                           \
 (add)->prev->next = (add);                                                                    \
 if ((head) == (el)) {                                                                         \
  (head) = (add);                                                                              \
 }                                                                                             \
} while (0)                                                                                    \

#endif /* UTLIST_H */



Mode Type Size Ref File
100644 blob 281 8b6eea76cbea14a93132b1ec7744f471c073041c .gitignore
100644 blob 2830 78666bbb9f73ac52929dcf8cdefd61ac6d98321c .travis.yml
100644 blob 951 5de078c758a1286082bab80e48f64d4783efe9bf BUILD.md
100644 blob 35058 2061be2b732ea86101a7c0d5f4df0bbbfb830a30 LICENSE.md
100644 blob 669 5e19d0a3ee2725091cd7c51900dffbec3ffc0997 Makefile
100644 blob 637 ee41cdaf376b4cb8eca51751b170e4c698167dda Makefile.mac
100644 blob 5180 1d97fd91128dcb82cde77c929d63e0b58e494bbe README.md
100644 blob 1697 ec1f8cf068b00049cdbdedc9966f5847e2767907 VPN.md
100644 blob 17181 bfcab148a15c7969c75aa029fb4274f70c92ae1e client.c
100644 blob 742 1ac50085e349329987ff615195ecfde70ab35088 client.h
100644 blob 176 52f9d71f3415d613e0cf73edd6d05a2a27fdfd8a gitversion.c
100644 blob 2085 acb45b84f5abf7ead93318f1680d0a3af1bdc070 log.c
100644 blob 686 ed48364b9e8c9451c3ca334e6397e0b67a1040b1 log.h
100644 blob 549 a9095f6b9cc0f97ddc698e07a4606b37822ba61c mach.c
100644 blob 287 5ac9a4e29fbb831ba2cfa6dc98589ffaf381b91b mach.h
100644 blob 35606 0535e675d5c4b7a1890d4cf09347c9ac5ffa8300 main.c
100644 blob 2680 41a7995d316fd42860b12143a1feda8f6c6a250b main.h
040000 tree - 9fc0b45bf62d115143aae3926e70bbb221d1d982 scripts
100644 blob 7328 0bae45515dbb84b4c394de71dff04571edde7c4c tox_bootstrap.h
100644 blob 12536 75e9dc5ed9399120416e8da5f24d1ccde41cf901 utarray.h
100644 blob 61492 7205c67efa27c66884c8d4d1c8a105d4854a0548 uthash.h
100644 blob 4006 a2f60deeed5ba62684753f2aef363d06ff76ded2 util.c
100644 blob 464 1a210d51a11eb6983a2984eec1443bd6d5c8006e util.h
100644 blob 55882 b5f3f04c104785a57d8280c37c1b19b36068e56e utlist.h
100644 blob 11555 867442c843dbe6bf096a488e3ce9ec6323809f7f utstring.h
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