crypto/external/bsd/heimdal/dist/base/baselocl.h

   1 /*      $NetBSD: baselocl.h,v 1.3 2014/04/24 13:45:33 pettai Exp $      */
   2
   3 /*
   4  * Copyright (c) 2010 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Portions Copyright (c) 2010 Apple Inc. All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  *
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  *
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * 3. Neither the name of the Institute nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37
  38 #include "config.h"
  39
  40 #ifdef HAVE_SYS_TYPES_H
  41 #include <sys/types.h>
  42 #endif
  43 #ifdef HAVE_SYS_SELECT_H
  44 #include <sys/select.h>
  45 #endif
  46
  47 #include <stdio.h>
  48 #include <stdlib.h>
  49 #include <string.h>
  50 #include <errno.h>
  51 #include <limits.h>
  52
  53 #ifdef HAVE_UNISTD_H
  54 #include <unistd.h>
  55 #endif
  56
  57 #include "heimqueue.h"
  58 #include "heim_threads.h"
  59 #include <krb5/heimbase.h>
  60 #include "heimbasepriv.h"
  61
  62 #ifdef HAVE_DISPATCH_DISPATCH_H
  63 #include <dispatch/dispatch.h>
  64 #endif
  65
  66 #if defined(USE_ATOMIC_INCDEC)
  67
  68 #include <sys/atomic.h>
  69 #define heim_base_atomic_inc(x) atomic_inc_32_nv((x))
  70 #define heim_base_atomic_dec(x) atomic_dec_32_nv((x))
  71 #define heim_base_atomic_type   uint32_t
  72 #define heim_base_atomic_max    UINT32_MAX
  73
  74 #define heim_base_exchange_pointer(t,v) atomic_swap_ptr((t), (v))
  75
  76 #elif defined(__GNUC__) && defined(HAVE___SYNC_ADD_AND_FETCH)
  77
  78 #define heim_base_atomic_inc(x) __sync_add_and_fetch((x), 1)
  79 #define heim_base_atomic_dec(x) __sync_sub_and_fetch((x), 1)
  80 #define heim_base_atomic_type   unsigned int
  81 #define heim_base_atomic_max    UINT_MAX
  82
  83 #define heim_base_exchange_pointer(t,v) __sync_lock_test_and_set((t), (v))
  84
  85 #elif defined(_WIN32)
  86
  87 #define heim_base_atomic_inc(x) InterlockedIncrement(x)
  88 #define heim_base_atomic_dec(x) InterlockedDecrement(x)
  89 #define heim_base_atomic_type   LONG
  90 #define heim_base_atomic_max    MAXLONG
  91
  92 #define heim_base_exchange_pointer(t,v) InterlockedExchangePointer((t),(v))
  93
  94 #else
  95
  96 #define HEIM_BASE_NEED_ATOMIC_MUTEX 1
  97 extern HEIMDAL_MUTEX _heim_base_mutex;
  98
  99 #define heim_base_atomic_type   unsigned int
 100
 101 static inline heim_base_atomic_type
 102 heim_base_atomic_inc(heim_base_atomic_type *x)
 103 {
 104     heim_base_atomic_type t;
 105     HEIMDAL_MUTEX_lock(&_heim_base_mutex);
 106     t = ++(*x);
 107     HEIMDAL_MUTEX_unlock(&_heim_base_mutex);
 108     return t;
 109 }
 110
 111 static inline heim_base_atomic_type
 112 heim_base_atomic_dec(heim_base_atomic_type *x)
 113 {
 114     heim_base_atomic_type t;
 115     HEIMDAL_MUTEX_lock(&_heim_base_mutex);
 116     t = --(*x);
 117     HEIMDAL_MUTEX_unlock(&_heim_base_mutex);
 118     return t;
 119 }
 120
 121 #define heim_base_atomic_max    UINT_MAX
 122
 123 #endif
 124
 125 /* tagged strings/object/XXX */
 126 #define heim_base_is_tagged(x) (((uintptr_t)(x)) & 0x3)
 127
 128 #define heim_base_is_tagged_object(x) ((((uintptr_t)(x)) & 0x3) == 1)
 129 #define heim_base_make_tagged_object(x, tid) \
 130     ((heim_object_t)((((uintptr_t)(x)) << 5) | ((tid) << 2) | 0x1))
 131 #define heim_base_tagged_object_tid(x) ((((uintptr_t)(x)) & 0x1f) >> 2)
 132 #define heim_base_tagged_object_value(x) (((uintptr_t)(x)) >> 5)
 133
 134 /*
 135  *
 136  */
 137
 138 #undef HEIMDAL_NORETURN_ATTRIBUTE
 139 #define HEIMDAL_NORETURN_ATTRIBUTE
 140 #undef HEIMDAL_PRINTF_ATTRIBUTE
 141 #define HEIMDAL_PRINTF_ATTRIBUTE(x)