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@ | |
| 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/thread.h> | |
| 32 | #include <kern/ledger.h> | |
| 33 | ||
| 34 | #include <kperf/kperf.h> | |
| 35 | #include <kperf/kperf_arch.h> | |
| 36 | ||
| 37 | #include <kperf/buffer.h> | |
| 38 | #include <kperf/context.h> | |
| 39 | #include <kperf/meminfo.h> | |
| 40 | ||
| 41 | /* collect current memory info */ | |
| 42 | void | |
| 43 | kperf_meminfo_sample(struct meminfo *mi, struct kperf_context *context) | |
| 44 | { | |
| 45 | task_t task; | |
| 46 | ledger_amount_t credit, debit; | |
| 47 | uint64_t phys_footprint; | |
| 48 | kern_return_t kr; | |
| 49 | ||
| 50 | assert(mi); | |
| 51 | assert(context); | |
| 52 | ||
| 53 | thread_t thread = context->cur_thread; | |
| 54 | ||
| 55 | BUF_INFO1(PERF_MI_SAMPLE, (uintptr_t)thread_tid(thread)); | |
| 56 | ||
| 57 | task = get_threadtask(thread); | |
| 58 | ||
| 59 | kr = kperf_get_phys_footprint(task, &phys_footprint); | |
| 60 | if (kr == KERN_SUCCESS) { | |
| 61 | mi->phys_footprint = phys_footprint; | |
| 62 | } else { | |
| 63 | mi->phys_footprint = UINT64_MAX; | |
| 64 | } | |
| 65 | ||
| 66 | kr = ledger_get_entries(task->ledger, task_ledgers.purgeable_volatile, | |
| 67 | &credit, &debit); | |
| 68 | if (kr == KERN_SUCCESS) { | |
| 69 | mi->purgeable_volatile = credit - debit; | |
| 70 | } else { | |
| 71 | mi->purgeable_volatile = UINT64_MAX; | |
| 72 | } | |
| 73 | ||
| 74 | kr = ledger_get_entries(task->ledger, | |
| 75 | task_ledgers.purgeable_volatile_compressed, | |
| 76 | &credit, &debit); | |
| 77 | if (kr == KERN_SUCCESS) { | |
| 78 | mi->purgeable_volatile_compressed = credit - debit; | |
| 79 | } else { | |
| 80 | mi->purgeable_volatile_compressed = UINT64_MAX; | |
| 81 | } | |
| 82 | } | |
| 83 | ||
| 84 | /* log an existing sample into the buffer */ | |
| 85 | void | |
| 86 | kperf_meminfo_log(struct meminfo *mi) | |
| 87 | { | |
| 88 | BUF_DATA3(PERF_MI_DATA, mi->phys_footprint, mi->purgeable_volatile, | |
| 89 | mi->purgeable_volatile_compressed); | |
| 90 | } | |
| 91 |