/usr/include/GNUstep/GNUstepBase/GSBlocks.h is in libgnustep-base-dev 1.24.7-1build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | /** Definitions for block support for GNUStep
Copyright (C) 2011 Free Software Foundation, Inc.
This file is part of the GNUstep Base Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02111 USA.
*/
#ifndef __GSBlocks_h_GNUSTEP_BASE_INCLUDE
#define __GSBlocks_h_GNUSTEP_BASE_INCLUDE
/* Define the has_feature pseudo-macro for GCC. */
#ifndef __has_feature
#define __has_feature(x) 0
#endif
#ifndef GCC_VERSION
#define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
#endif
#if __has_feature(blocks)
#define BLOCK_SCOPE __block
/**
* Defines a block type. Will work whether or not the compiler natively
* supports blocks.
*/
#define DEFINE_BLOCK_TYPE(name, retTy, argTys, ...) \
typedef retTy(^name)(argTys, ## __VA_ARGS__)
#define DEFINE_BLOCK_TYPE_NO_ARGS(name, retTy) \
typedef retTy(^name)()
/**
* Calls a block. Works irrespective of whether the compiler supports blocks.
*/
#define CALL_BLOCK(block, args, ...) block(args, ## __VA_ARGS__)
/**
* Calls a block without arguments.
*/
#define CALL_BLOCK_NO_ARGS(block) block()
#else
/* Fall-back versions for when the compiler doesn't have native blocks support.
*/
#if (GCC_VERSION >= 3000)
#define DEFINE_BLOCK_TYPE(name, retTy, argTys, ...) \
typedef struct {\
void *isa;\
int flags;\
int reserved;\
retTy (*invoke)(void*, argTys, ## __VA_ARGS__);\
} *name
#define DEFINE_BLOCK_TYPE_NO_ARGS(name, retTy) \
typedef struct {\
void *isa;\
int flags;\
int reserved;\
retTy (*invoke)(void*);\
} *name
#define CALL_BLOCK(block, args, ...) block->invoke(block, args, ## __VA_ARGS__)
#define CALL_BLOCK_NO_ARGS(block) block->invoke(block)
#define BLOCK_SCOPE
#else /* GCC_VERSION >= 3000 */
#define DEFINE_BLOCK_TYPE(name, retTy, argTys...) \
typedef struct {\
void *isa;\
int flags;\
int reserved;\
retTy (*invoke)(void*, argTys);\
} *name
#define DEFINE_BLOCK_TYPE_NO_ARGS(name, retTy) \
typedef struct {\
void *isa;\
int flags;\
int reserved;\
retTy (*invoke)(void*);\
} *name
#define CALL_BLOCK(block, args...) block->invoke(block, args)
#define CALL_BLOCK_NO_ARGS(block) block->invoke(block)
#define BLOCK_SCOPE
#endif /* GCC_VERSION >= 3000 */
#endif /* __has_feature(blocks) */
#ifdef __cplusplus
extern "C" {
#endif
/**
* _Block_copy and _Block_release are weakly imported, but can be assumed
* to be available whenever a feature using blocks is accessed
* by an application.
*/
void *_Block_copy(void *) __attribute__((weak));
void _Block_release(void *) __attribute__((weak));
#ifdef __cplusplus
}
#endif
#ifndef Block_copy
# define Block_copy(x) ((__typeof(x))_Block_copy((void *)(x)))
#endif
#ifndef Block_release
# define Block_release(x) _Block_release((void *)(x))
#endif
#endif /* __GSBlocks_h_GNUSTEP_BASE_INCLUDE */
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