1 /* $NetBSD: baselocl.h,v 1.2 2017/01/28 21:31:45 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2010 - 2011 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 #include <krb5/roken.h> 41 42 #ifdef HAVE_SYS_SELECT_H 43 #include <sys/select.h> 44 #endif 45 46 #define HEIMDAL_TEXTDOMAIN "heimdal_krb5" 47 48 #ifdef LIBINTL 49 #include <libintl.h> 50 #define N_(x,y) dgettext(HEIMDAL_TEXTDOMAIN, x) 51 #else 52 #define N_(x,y) (x) 53 #define bindtextdomain(package, localedir) 54 #endif 55 56 #include "heimqueue.h" 57 #include "heim_threads.h" 58 #include <krb5/heimbase.h> 59 #include "heimbasepriv.h" 60 61 #ifdef HAVE_DISPATCH_DISPATCH_H 62 #include <dispatch/dispatch.h> 63 #endif 64 65 #if defined(__GNUC__) && defined(HAVE___SYNC_ADD_AND_FETCH) 66 67 #define heim_base_atomic_inc(x) __sync_add_and_fetch((x), 1) 68 #define heim_base_atomic_dec(x) __sync_sub_and_fetch((x), 1) 69 #define heim_base_atomic_type unsigned int 70 #define heim_base_atomic_max UINT_MAX 71 72 #ifndef __has_builtin 73 #define __has_builtin(x) 0 74 #endif 75 76 #if __has_builtin(__sync_swap) 77 #define heim_base_exchange_pointer(t,v) __sync_swap((t), (v)) 78 #else 79 #define heim_base_exchange_pointer(t,v) __sync_lock_test_and_set((t), (v)) 80 #endif 81 82 #elif defined(__sun) 83 84 #include <sys/atomic.h> 85 86 #define heim_base_atomic_inc(x) atomic_inc_uint_nv((volatile uint_t *)(x)) 87 #define heim_base_atomic_dec(x) atomic_dec_uint_nv((volatile uint_t *)(x)) 88 #define heim_base_atomic_type uint_t 89 #define heim_base_atomic_max UINT_MAX 90 91 #define heim_base_exchange_pointer(t,v) atomic_swap_ptr((volatile void *)(t), (void *)(v)) 92 93 #elif defined(_AIX) 94 95 #include <sys/atomic_op.h> 96 97 #define heim_base_atomic_inc(x) (fetch_and_add((atomic_p)(x)) + 1) 98 #define heim_base_atomic_dec(x) (fetch_and_add((atomic_p)(x)) - 1) 99 #define heim_base_atomic_type unsigned int 100 #define heim_base_atomic_max UINT_MAX 101 102 static inline void * 103 heim_base_exchange_pointer(void *p, void *newval) 104 { 105 void *val = *(void **)p; 106 107 while (!compare_and_swaplp((atomic_l)p, (long *)&val, (long)newval)) 108 ; 109 110 return val; 111 } 112 113 #elif defined(_WIN32) 114 115 #define heim_base_atomic_inc(x) InterlockedIncrement(x) 116 #define heim_base_atomic_dec(x) InterlockedDecrement(x) 117 #define heim_base_atomic_type LONG 118 #define heim_base_atomic_max MAXLONG 119 120 #define heim_base_exchange_pointer(t,v) InterlockedExchangePointer((t),(v)) 121 122 #else 123 124 #define HEIM_BASE_NEED_ATOMIC_MUTEX 1 125 extern HEIMDAL_MUTEX _heim_base_mutex; 126 127 #define heim_base_atomic_type unsigned int 128 129 static inline heim_base_atomic_type 130 heim_base_atomic_inc(heim_base_atomic_type *x) 131 { 132 heim_base_atomic_type t; 133 HEIMDAL_MUTEX_lock(&_heim_base_mutex); 134 t = ++(*x); 135 HEIMDAL_MUTEX_unlock(&_heim_base_mutex); 136 return t; 137 } 138 139 static inline heim_base_atomic_type 140 heim_base_atomic_dec(heim_base_atomic_type *x) 141 { 142 heim_base_atomic_type t; 143 HEIMDAL_MUTEX_lock(&_heim_base_mutex); 144 t = --(*x); 145 HEIMDAL_MUTEX_unlock(&_heim_base_mutex); 146 return t; 147 } 148 149 #define heim_base_atomic_max UINT_MAX 150 151 #endif 152 153 /* tagged strings/object/XXX */ 154 #define heim_base_is_tagged(x) (((uintptr_t)(x)) & 0x3) 155 156 #define heim_base_is_tagged_object(x) ((((uintptr_t)(x)) & 0x3) == 1) 157 #define heim_base_make_tagged_object(x, tid) \ 158 ((heim_object_t)((((uintptr_t)(x)) << 5) | ((tid) << 2) | 0x1)) 159 #define heim_base_tagged_object_tid(x) ((((uintptr_t)(x)) & 0x1f) >> 2) 160 #define heim_base_tagged_object_value(x) (((uintptr_t)(x)) >> 5) 161 162 /* 163 * 164 */ 165 166 #undef HEIMDAL_NORETURN_ATTRIBUTE 167 #define HEIMDAL_NORETURN_ATTRIBUTE 168 #undef HEIMDAL_PRINTF_ATTRIBUTE 169 #define HEIMDAL_PRINTF_ATTRIBUTE(x) 170