1/* 2 * Copyright (c) 2011 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// extern uint64_t timer_period; 30extern void kperf_timer_reprogram(void); 31extern void kperf_timer_reprogram_all(void); 32 33 34// return values from the action 35#define TIMER_REPROGRAM (0) 36#define TIMER_STOP (1) 37 38/* blah */ 39extern unsigned kperf_timer_get_count(void); 40extern int kperf_timer_set_count(unsigned count); 41 42extern int kperf_timer_get_period( unsigned timer, uint64_t *period ); 43extern int kperf_timer_set_period( unsigned timer, uint64_t period ); 44 45extern int kperf_timer_go(void); 46extern int kperf_timer_stop(void); 47 48extern unsigned kperf_timer_get_petid(void); 49extern int kperf_timer_set_petid(unsigned count); 50 51/* so PET thread can re-arm the timer */ 52extern int kperf_timer_pet_set( unsigned timer ); 53