baselocl.h revision 1.2
1/* $NetBSD: baselocl.h,v 1.2 2011/04/16 17:45:44 martin Exp $ */ 2 3/* 4 * Copyright (c) 2010 Kungliga Tekniska H��gskolan 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 <stdio.h> 41#include <stdlib.h> 42#include <string.h> 43#include <errno.h> 44#include <limits.h> 45 46#ifdef HAVE_UNISTD_H 47#include <unistd.h> 48#endif 49 50#include "heimqueue.h" 51#include "heim_threads.h" 52#include <krb5/heimbase.h> 53#include "heimbasepriv.h" 54 55#ifdef HAVE_DISPATCH_DISPATCH_H 56#include <dispatch/dispatch.h> 57#endif 58 59#if defined(USE_ATOMIC_INCDEC) 60 61#include <sys/atomic.h> 62#define heim_base_atomic_inc(x) atomic_inc_32_nv((x)) 63#define heim_base_atomic_dec(x) atomic_dec_32_nv((x)) 64#define heim_base_atomic_type uint32_t 65#define heim_base_atomic_max UINT32_MAX 66 67#define heim_base_exchange_pointer(t,v) atomic_swap_ptr((t), (v)) 68 69#elif defined(__GNUC__) && defined(HAVE___SYNC_ADD_AND_FETCH) 70 71#define heim_base_atomic_inc(x) __sync_add_and_fetch((x), 1) 72#define heim_base_atomic_dec(x) __sync_sub_and_fetch((x), 1) 73#define heim_base_atomic_type unsigned int 74#define heim_base_atomic_max UINT_MAX 75 76#define heim_base_exchange_pointer(t,v) __sync_lock_test_and_set((t), (v)) 77 78#elif defined(_WIN32) 79 80#define heim_base_atomic_inc(x) InterlockedIncrement(x) 81#define heim_base_atomic_dec(x) InterlockedDecrement(x) 82#define heim_base_atomic_type LONG 83#define heim_base_atomic_max MAXLONG 84 85#define heim_base_exchange_pointer(t,v) InterlockedExchangePointer((t),(v)) 86 87#else 88 89#define HEIM_BASE_NEED_ATOMIC_MUTEX 1 90extern HEIMDAL_MUTEX _heim_base_mutex; 91 92#define heim_base_atomic_type unsigned int 93 94static inline heim_base_atomic_type 95heim_base_atomic_inc(heim_base_atomic_type *x) 96{ 97 heim_base_atomic_type t; 98 HEIMDAL_MUTEX_lock(&_heim_base_mutex); 99 t = ++(*x); 100 HEIMDAL_MUTEX_unlock(&_heim_base_mutex); 101 return t; 102} 103 104static inline heim_base_atomic_type 105heim_base_atomic_dec(heim_base_atomic_type *x) 106{ 107 heim_base_atomic_type t; 108 HEIMDAL_MUTEX_lock(&_heim_base_mutex); 109 t = --(*x); 110 HEIMDAL_MUTEX_unlock(&_heim_base_mutex); 111 return t; 112} 113 114#define heim_base_atomic_max UINT_MAX 115 116#endif 117 118/* tagged strings/object/XXX */ 119#define heim_base_is_tagged(x) (((uintptr_t)(x)) & 0x3) 120 121#define heim_base_is_tagged_object(x) ((((uintptr_t)(x)) & 0x3) == 1) 122#define heim_base_make_tagged_object(x, tid) \ 123 ((heim_object_t)((((uintptr_t)(x)) << 5) | ((tid) << 2) | 0x1)) 124#define heim_base_tagged_object_tid(x) ((((uintptr_t)(x)) & 0x1f) >> 2) 125#define heim_base_tagged_object_value(x) (((uintptr_t)(x)) >> 5) 126 127/* 128 * 129 */ 130 131#undef HEIMDAL_NORETURN_ATTRIBUTE 132#define HEIMDAL_NORETURN_ATTRIBUTE 133#undef HEIMDAL_PRINTF_ATTRIBUTE 134#define HEIMDAL_PRINTF_ATTRIBUTE(x) 135