projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 3e170ce0 A |
1 | /* |
| 2 | * Copyright (c) 2011 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ | |
| d9a64523 | 5 | * |
| 3e170ce0 A |
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. | |
| d9a64523 | 14 | * |
| 3e170ce0 A |
15 | * Please obtain a copy of the License at |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| d9a64523 | 17 | * |
| 3e170ce0 A |
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. | |
| d9a64523 | 25 | * |
| 3e170ce0 A |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 27 | */ | |
| 28 | ||
| 29 | #include <mach/mach_types.h> | |
| 30 | #include <kern/task.h> /* task_ledgers */ | |
| 3e170ce0 A |
31 | #include <kern/ledger.h> |
| 32 | ||
| 33 | #include <kperf/kperf.h> | |
| 3e170ce0 A |
34 | |
| 35 | #include <kperf/buffer.h> | |
| 36 | #include <kperf/context.h> | |
| 37 | #include <kperf/meminfo.h> | |
| 38 | ||
| 39 | /* collect current memory info */ | |
| 40 | void | |
| d9a64523 | 41 | kperf_meminfo_sample(task_t task, struct meminfo *mi) |
| 3e170ce0 | 42 | { |
| 3e170ce0 | 43 | ledger_amount_t credit, debit; |
| 3e170ce0 A |
44 | kern_return_t kr; |
| 45 | ||
| d9a64523 | 46 | assert(mi != NULL); |
| 3e170ce0 | 47 | |
| d9a64523 | 48 | BUF_INFO(PERF_MI_SAMPLE | DBG_FUNC_START); |
| 3e170ce0 | 49 | |
| d9a64523 | 50 | mi->phys_footprint = get_task_phys_footprint(task); |
| 3e170ce0 A |
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 | } | |
| 39037602 | 68 | |
| d9a64523 | 69 | BUF_INFO(PERF_MI_SAMPLE | DBG_FUNC_END); |
| 3e170ce0 A |
70 | } |
| 71 | ||
| 72 | /* log an existing sample into the buffer */ | |
| 73 | void | |
| 74 | kperf_meminfo_log(struct meminfo *mi) | |
| 75 | { | |
| 39037602 A |
76 | BUF_DATA(PERF_MI_DATA, mi->phys_footprint, mi->purgeable_volatile, |
| 77 | mi->purgeable_volatile_compressed); | |
| 3e170ce0 | 78 | } |