1/*
2 * Copyright (c) 2017 Apple 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#ifndef MACHINE_MONOTONIC_H
29#define MACHINE_MONOTONIC_H
30
31#if defined(__x86_64__)
32#include <x86_64/monotonic.h>
33#elif defined(__arm64__)
34#include <arm64/monotonic.h>
35#elif defined(__arm__)
36#include <arm/monotonic.h>
37#else
38#error unsupported architecture
39#endif
40
41#include <stdatomic.h>
42#include <stdbool.h>
43#include <stdint.h>
44
45extern bool mt_core_supported;
46
47struct mt_cpu {
48 uint64_t mtc_snaps[MT_CORE_NFIXED];
49 uint64_t mtc_counts[MT_CORE_NFIXED];
50 uint64_t mtc_counts_last[MT_CORE_NFIXED];
51};
52
53struct mt_thread {
54 _Atomic uint64_t mth_gen;
55 uint64_t mth_counts[MT_CORE_NFIXED];
56};
57
58struct mt_task {
59 uint64_t mtk_counts[MT_CORE_NFIXED];
60};
61
62struct mt_cpu *mt_cur_cpu(void);
63void mt_mtc_update_fixed_counts(struct mt_cpu *mtc, uint64_t *counts,
64 uint64_t *counts_since);
65uint64_t mt_mtc_update_count(struct mt_cpu *mtc, unsigned int ctr);
66uint64_t mt_core_snap(unsigned int ctr);
67void mt_core_set_snap(unsigned int ctr, uint64_t snap);
68void mt_mtc_set_snap(struct mt_cpu *mtc, unsigned int ctr, uint64_t snap);
69
70typedef void (*mt_pmi_fn)(bool user_mode, void *ctx);
71extern bool mt_microstackshots;
72extern unsigned int mt_microstackshot_ctr;
73extern mt_pmi_fn mt_microstackshot_pmi_handler;
74extern void *mt_microstackshot_ctx;
75extern uint64_t mt_core_reset_values[MT_CORE_NFIXED];
76int mt_microstackshot_start_arch(uint64_t period);
77
78#endif /* !defined(MACHINE_MONOTONIC_H) */
79