/* * 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@ */ /* fwd decl */ struct kperf_sample; struct kperf_context; /* bits for defining what to do on an action */ #define SAMPLER_TINFO (1<<0) #define SAMPLER_TINFOEX (1<<1) #define SAMPLER_KSTACK (1<<2) #define SAMPLER_USTACK (1<<3) /* Take a sample into "sbuf" using current thread "cur_thread" */ extern kern_return_t kperf_sample( struct kperf_sample *sbuf, struct kperf_context*, unsigned actionid, boolean_t pend_user ); /* return codes from taking a sample * either keep trigger, or something went wrong (or we're shutting down) * so turn off. */ #define SAMPLE_CONTINUE (0) #define SAMPLE_SHUTDOWN (1) /* Get the sample buffer to use from interrupt handler context. Only * valid in interrupt contexts. */ extern struct kperf_sample* kperf_intr_sample_buffer(void); /* Interface functions */ extern unsigned kperf_action_get_count(void); extern int kperf_action_set_count(unsigned count); extern int kperf_action_set_samplers( unsigned actionid, uint32_t samplers ); extern int kperf_action_get_samplers( unsigned actionid, uint32_t *samplers_out ); extern void kperf_thread_ast_handler( thread_t thread );