/* * 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 <mach/mach_types.h> #include <kern/task.h> /* task_ledgers */ #include <kern/ledger.h> #include <kperf/kperf.h> #include <kperf/buffer.h> #include <kperf/context.h> #include <kperf/meminfo.h> /* collect current memory info */ void kperf_meminfo_sample(task_t task, struct meminfo *mi) { ledger_amount_t credit, debit; kern_return_t kr; assert(mi != NULL); BUF_INFO(PERF_MI_SAMPLE | DBG_FUNC_START); mi->phys_footprint = get_task_phys_footprint(task); kr = ledger_get_entries(task->ledger, task_ledgers.purgeable_volatile, &credit, &debit); if (kr == KERN_SUCCESS) { mi->purgeable_volatile = credit - debit; } else { mi->purgeable_volatile = UINT64_MAX; } kr = ledger_get_entries(task->ledger, task_ledgers.purgeable_volatile_compressed, &credit, &debit); if (kr == KERN_SUCCESS) { mi->purgeable_volatile_compressed = credit - debit; } else { mi->purgeable_volatile_compressed = UINT64_MAX; } BUF_INFO(PERF_MI_SAMPLE | DBG_FUNC_END); } /* log an existing sample into the buffer */ void kperf_meminfo_log(struct meminfo *mi) { BUF_DATA(PERF_MI_DATA, mi->phys_footprint, mi->purgeable_volatile, mi->purgeable_volatile_compressed); }