xref: /xnu-8792.41.9/libsyscall/wrappers/remove-counter.c (revision 5c2921b07a2480ab43ec66f5b9e41cb872bc554f)
1*5c2921b0SApple OSS Distributions /*
2*5c2921b0SApple OSS Distributions  * Copyright (c) 2010 Apple Inc. All rights reserved.
3*5c2921b0SApple OSS Distributions  *
4*5c2921b0SApple OSS Distributions  * @APPLE_LICENSE_HEADER_START@
5*5c2921b0SApple OSS Distributions  *
6*5c2921b0SApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*5c2921b0SApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*5c2921b0SApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*5c2921b0SApple OSS Distributions  * compliance with the License. Please obtain a copy of the License at
10*5c2921b0SApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this
11*5c2921b0SApple OSS Distributions  * file.
12*5c2921b0SApple OSS Distributions  *
13*5c2921b0SApple OSS Distributions  * The Original Code and all software distributed under the License are
14*5c2921b0SApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15*5c2921b0SApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16*5c2921b0SApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17*5c2921b0SApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18*5c2921b0SApple OSS Distributions  * Please see the License for the specific language governing rights and
19*5c2921b0SApple OSS Distributions  * limitations under the License.
20*5c2921b0SApple OSS Distributions  *
21*5c2921b0SApple OSS Distributions  * @APPLE_LICENSE_HEADER_END@
22*5c2921b0SApple OSS Distributions  */
23*5c2921b0SApple OSS Distributions 
24*5c2921b0SApple OSS Distributions #include <sys/types.h>
25*5c2921b0SApple OSS Distributions #if defined(__arm__)
26*5c2921b0SApple OSS Distributions #include <arm/arch.h>
27*5c2921b0SApple OSS Distributions #endif
28*5c2921b0SApple OSS Distributions 
29*5c2921b0SApple OSS Distributions #if defined(__ppc64__) || defined(__i386__) || defined(__x86_64__)
30*5c2921b0SApple OSS Distributions static int64_t __remove_counter = 0;
31*5c2921b0SApple OSS Distributions #else
32*5c2921b0SApple OSS Distributions static int32_t __remove_counter = 0;
33*5c2921b0SApple OSS Distributions #endif
34*5c2921b0SApple OSS Distributions 
35*5c2921b0SApple OSS Distributions __uint64_t
__get_remove_counter(void)36*5c2921b0SApple OSS Distributions __get_remove_counter(void)
37*5c2921b0SApple OSS Distributions {
38*5c2921b0SApple OSS Distributions #if defined(__arm__) && !defined(_ARM_ARCH_6)
39*5c2921b0SApple OSS Distributions 	return __remove_counter;
40*5c2921b0SApple OSS Distributions #else
41*5c2921b0SApple OSS Distributions 	return __sync_add_and_fetch(&__remove_counter, 0);
42*5c2921b0SApple OSS Distributions #endif
43*5c2921b0SApple OSS Distributions }
44*5c2921b0SApple OSS Distributions 
45*5c2921b0SApple OSS Distributions void
__inc_remove_counter(void)46*5c2921b0SApple OSS Distributions __inc_remove_counter(void)
47*5c2921b0SApple OSS Distributions {
48*5c2921b0SApple OSS Distributions #if defined(__arm__) && !defined(_ARM_ARCH_6)
49*5c2921b0SApple OSS Distributions 	__remove_counter++;
50*5c2921b0SApple OSS Distributions #else
51*5c2921b0SApple OSS Distributions 	__sync_add_and_fetch(&__remove_counter, 1);
52*5c2921b0SApple OSS Distributions #endif
53*5c2921b0SApple OSS Distributions }
54