1/*	$NetBSD: baselocl.h,v 1.1.1.1 2011/04/13 18:14:32 elric 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