| | 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 | #include <mach/mach_types.h> |
| | 30 | #include <kern/task.h> /* task_ledgers */ |
| | 31 | #include <kern/ledger.h> |
| | 32 | |
| | 33 | #include <kperf/kperf.h> |
| | 34 | |
| | 35 | #include <kperf/buffer.h> |
| | 36 | #include <kperf/context.h> |
| | 37 | #include <kperf/meminfo.h> |
| | 38 | |
| | 39 | /* collect current memory info */ |
| | 40 | void |
| | 41 | kperf_meminfo_sample(task_t task, struct meminfo *mi) |
| | 42 | { |
| | 43 | ledger_amount_t credit, debit; |
| | 44 | kern_return_t kr; |
| | 45 | |
| | 46 | assert(mi != NULL); |
| | 47 | |
| | 48 | BUF_INFO(PERF_MI_SAMPLE | DBG_FUNC_START); |
| | 49 | |
| | 50 | mi->phys_footprint = get_task_phys_footprint(task); |
| | 51 | |
| | 52 | kr = ledger_get_entries(task->ledger, task_ledgers.purgeable_volatile, |
| | 53 | &credit, &debit); |
| | 54 | if (kr == KERN_SUCCESS) { |
| | 55 | mi->purgeable_volatile = credit - debit; |
| | 56 | } else { |
| | 57 | mi->purgeable_volatile = UINT64_MAX; |
| | 58 | } |
| | 59 | |
| | 60 | kr = ledger_get_entries(task->ledger, |
| | 61 | task_ledgers.purgeable_volatile_compressed, |
| | 62 | &credit, &debit); |
| | 63 | if (kr == KERN_SUCCESS) { |
| | 64 | mi->purgeable_volatile_compressed = credit - debit; |
| | 65 | } else { |
| | 66 | mi->purgeable_volatile_compressed = UINT64_MAX; |
| | 67 | } |
| | 68 | |
| | 69 | BUF_INFO(PERF_MI_SAMPLE | DBG_FUNC_END); |
| | 70 | } |
| | 71 | |
| | 72 | /* log an existing sample into the buffer */ |
| | 73 | void |
| | 74 | kperf_meminfo_log(struct meminfo *mi) |
| | 75 | { |
| | 76 | BUF_DATA(PERF_MI_DATA, mi->phys_footprint, mi->purgeable_volatile, |
| | 77 | mi->purgeable_volatile_compressed); |
| | 78 | } |
projects / apple / xnu.git / blame_incremental