1 /*
2 * Copyright (c) 2024 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28 #include <darwintest.h>
29 #include <stdint.h>
30 #include <sys/proc_info.h>
31 #include <libproc.h>
32
33 /** Retrieve current CSW count for the calling PID. */
34 static int32_t
get_csw_count(void)35 get_csw_count(void)
36 {
37 struct proc_taskinfo taskinfo;
38 int rv;
39
40 rv = proc_pidinfo(getpid(), PROC_PIDTASKINFO, 0, &taskinfo, sizeof(taskinfo));
41 T_QUIET; T_ASSERT_POSIX_SUCCESS(rv, "PROC_PIDTASKINFO");
42
43 return taskinfo.pti_csw;
44 }
45