osfmk/kperf/lazy.h

   1 /*
   2  * Copyright (c) 2018 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
  29 #ifndef KPERF_LAZY_H
  30 #define KPERF_LAZY_H
  31
  32 #include <stdbool.h>
  33 #include <stdint.h>
  34 #include <kern/thread.h>
  35
  36 extern unsigned int kperf_lazy_wait_action;
  37 extern unsigned int kperf_lazy_cpu_action;
  38
  39 void kperf_lazy_reset(void);
  40 void kperf_lazy_off_cpu(thread_t thread);
  41 void kperf_lazy_make_runnable(thread_t thread, bool in_interrupt);
  42 void kperf_lazy_wait_sample(thread_t thread,
  43                 thread_continue_t continuation, uintptr_t *starting_fp);
  44 void kperf_lazy_cpu_sample(thread_t thread, unsigned int flags, bool interrupt);
  45
  46 /* accessors for configuration */
  47 int kperf_lazy_get_wait_action(void);
  48 int kperf_lazy_get_cpu_action(void);
  49 int kperf_lazy_set_wait_action(int action_id);
  50 int kperf_lazy_set_cpu_action(int action_id);
  51 uint64_t kperf_lazy_get_wait_time_threshold(void);
  52 uint64_t kperf_lazy_get_cpu_time_threshold(void);
  53 int kperf_lazy_set_wait_time_threshold(uint64_t threshold);
  54 int kperf_lazy_set_cpu_time_threshold(uint64_t threshold);
  55
  56 #endif /* !defined(KPERF_LAZY_H) */