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