1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
/*
* Copyright 2010-2011 Andrea Canciani
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Author(s): Andrea Canciani <ranma42@gmail.com>
*/
#ifndef SIMPLEOPS_INITFINI_IMPL_COMMON_H
#define SIMPLEOPS_INITFINI_IMPL_COMMON_H
#ifndef SIMPLEOPS_INITFINI_IMPL_H
#error Private header used directly
#endif
#include "simpleops/atomic/internal/_dispatch.h"
#include "simpleops/tss/internal/_dispatch.h"
static void
_simpleops_init_internals (void)
{
_simpleops_atomic_init ();
_simpleops_tss_init ();
}
static void
_simpleops_fini_internals (void)
{
_simpleops_tss_fini ();
_simpleops_atomic_fini ();
}
static void _simpleops_init_externals (void);
static void _simpleops_fini_externals (void);
/**
* This macro is used to specify what function should be called upon
* initialization.
*/
#define SIMPLEOPS_INIT(f) static void _simpleops_init_externals (void) { f (); }
/**
* This macro is used to specify what function should be called upon
* termination.
*/
#define SIMPLEOPS_FINI(f) static void _simpleops_fini_externals (void) { f (); }
static int _simpleops_initfini_counter;
/* Invoke internal/external init/fini in the right order. Init only if
* initialization has not yet been performed, fini only if every user
* has already detached. */
/**
* Perform the initialization.
*
* After this function returns, the initialization is guaranteed to be
* complete. This is only needed in order to enforce a specific
* initialization sequence in dependent libraries.
*
* This function is not thread-safe. Multiple concurrent calls may
* lead to undefined behavior.
*/
static void
simpleops_init (void)
{
if (_simpleops_initfini_counter++)
return;
_simpleops_init_internals ();
_simpleops_init_externals ();
}
/**
* Perform the termination.
*
* After this function returns, the termination is guaranteed to be
* complete. This is only needed in order to enforce a specific
* termination sequence in dependent libraries.
*
* This function is not thread-safe. Multiple concurrent calls may
* lead to undefined behavior.
*/
static void
simpleops_fini (void)
{
if (--_simpleops_initfini_counter)
return;
_simpleops_fini_externals ();
_simpleops_fini_internals ();
}
#endif
|
