xref: /xnu-8796.121.2/libkern/libclosure/libclosuredata.c (revision c54f35ca767986246321eb901baf8f5ff7923f6a)
1*c54f35caSApple OSS Distributions /*
2*c54f35caSApple OSS Distributions  * data.c
3*c54f35caSApple OSS Distributions  * libclosure
4*c54f35caSApple OSS Distributions  *
5*c54f35caSApple OSS Distributions  * Copyright (c) 2008-2010 Apple Inc. All rights reserved.
6*c54f35caSApple OSS Distributions  *
7*c54f35caSApple OSS Distributions  * @APPLE_LLVM_LICENSE_HEADER@
8*c54f35caSApple OSS Distributions  *
9*c54f35caSApple OSS Distributions  */
10*c54f35caSApple OSS Distributions 
11*c54f35caSApple OSS Distributions /********************
12*c54f35caSApple OSS Distributions  *  NSBlock support
13*c54f35caSApple OSS Distributions  *
14*c54f35caSApple OSS Distributions  *  We allocate space and export a symbol to be used as the Class for the on-stack and malloc'ed copies until ObjC arrives on the scene.  These data areas are set up by Foundation to link in as real classes post facto.
15*c54f35caSApple OSS Distributions  *
16*c54f35caSApple OSS Distributions  *  We keep these in a separate file so that we can include the runtime code in test subprojects but not include the data so that compiled code that sees the data in libSystem doesn't get confused by a second copy.  Somehow these don't get unified in a common block.
17*c54f35caSApple OSS Distributions  **********************/
18*c54f35caSApple OSS Distributions 
19*c54f35caSApple OSS Distributions void * _NSConcreteStackBlock[32] = { 0 };
20*c54f35caSApple OSS Distributions void * _NSConcreteMallocBlock[32] = { 0 };
21*c54f35caSApple OSS Distributions void * _NSConcreteAutoBlock[32] = { 0 };
22*c54f35caSApple OSS Distributions void * _NSConcreteFinalizingBlock[32] = { 0 };
23*c54f35caSApple OSS Distributions void * _NSConcreteGlobalBlock[32] = { 0 };
24*c54f35caSApple OSS Distributions void * _NSConcreteWeakBlockVariable[32] = { 0 };
25