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
|
/*-
* Copyright (c) 2014 David T Chisnall
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifdef __BLOCKS__
/**
* Declares a block variable. This macro is defined in the trivial way for
* compilers that support blocks and exposing the ABI in the source for other
* compilers.
*/
#define DECLARE_BLOCK(retTy, name, argTys, ...)\
retTy(^name)(argTys, ## __VA_ARGS__)
/**
* Calls a block variable. This macro is defined in the trivial way for
* compilers that support blocks and exposing the ABI in the source for other
* compilers.
*/
#define CALL_BLOCK(name, ...) name(__VA_ARGS__)
#else // !__BLOCKS__
#define DECLARE_BLOCK(retTy, name, argTys, ...)\
struct {\
void *isa;\
int flags;\
int reserved;\
retTy (*invoke)(void *, ...);\
} *name
#define CALL_BLOCK(name, ...) (name)->invoke(name, __VA_ARGS__)
#endif // __BLOCKS__
/**
* Returns the pointer to the block-invoke function. This is used for passing
* blocks to functions that want a function pointer and a data pointer.
*/
#define GET_BLOCK_FUNCTION(x) \
(((struct {\
void *isa;\
int flags;\
int reserved;\
void (*invoke)(void *, ...);\
}*)(void*)x)->invoke)
|
