/usr/include/GNUstep/GNUstepBase/GSBlocks.h is in libgnustep-base-dev 1.22.1-4+deb7u1.
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 | /** 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
#if __has_feature(blocks)
/**
* 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__)
/**
* Calls a block. Works irrespective of whether the compiler supports blocks.
*/
#define CALL_BLOCK(block, args, ...) block(args, ## __VA_ARGS__)
#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 CALL_BLOCK(block, args, ...) block->invoke(block, args, ## __VA_ARGS__)
#else /* GCC_VERSION >= 3000 */
#define DEFINE_BLOCK_TYPE(name, retTy, argTys, args...) \
typedef struct {\
void *isa;\
int flags;\
int reserved;\
retTy (*invoke)(void*, argTys, args);\
} *name
#define CALL_BLOCK(block, args...) block->invoke(block, args)
#endif /* GCC_VERSION >= 3000 */
#endif /* __has_feature(blocks) */
#endif /* __GSBlocks_h_GNUSTEP_BASE_INCLUDE */
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