#ifndef KPERF_TIMER_H #define KPERF_TIMER_H /* * Copyright (c) 2011 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #include <kern/timer_call.h> #include <kern/bits.h> struct kperf_timer { struct timer_call tcall; uint64_t period; unsigned actionid; volatile unsigned active; /* * A bitmap of CPUs that have a pending timer to service. On Intel, it * allows the core responding to the timer interrupt to not queue up * cross-calls on cores that haven't yet responded. On ARM, it allows * the signal handler to multiplex simultaneous fires of different * timers. */ bitmap_t pending_cpus; }; extern struct kperf_timer *kperf_timerv; extern unsigned int kperf_timerc; void kperf_timer_reprogram(void); void kperf_timer_reprogram_all(void); void kperf_ipi_handler(void *param); // return values from the action #define TIMER_REPROGRAM (0) #define TIMER_STOP (1) /* getters and setters on timers */ unsigned kperf_timer_get_count(void); int kperf_timer_set_count(unsigned int count); int kperf_timer_get_period(unsigned int timer, uint64_t *period); int kperf_timer_set_period(unsigned int timer, uint64_t period); int kperf_timer_get_action(unsigned int timer, uint32_t *action); int kperf_timer_set_action(unsigned int timer, uint32_t action); void kperf_timer_go(void); void kperf_timer_stop(void); void kperf_timer_reset(void); unsigned int kperf_timer_get_petid(void); int kperf_timer_set_petid(unsigned int count); /* so PET thread can re-arm the timer */ void kperf_timer_pet_rearm(uint64_t elapsed_ticks); #endif /* !defined(KPERF_TIMER_H) */