1*0f4c859eSApple OSS Distributions /*
2*0f4c859eSApple OSS Distributions * Copyright (c) 2011 Apple Computer, Inc. All rights reserved.
3*0f4c859eSApple OSS Distributions *
4*0f4c859eSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*0f4c859eSApple OSS Distributions *
6*0f4c859eSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*0f4c859eSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*0f4c859eSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*0f4c859eSApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*0f4c859eSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*0f4c859eSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*0f4c859eSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*0f4c859eSApple OSS Distributions * terms of an Apple operating system software license agreement.
14*0f4c859eSApple OSS Distributions *
15*0f4c859eSApple OSS Distributions * Please obtain a copy of the License at
16*0f4c859eSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*0f4c859eSApple OSS Distributions *
18*0f4c859eSApple OSS Distributions * The Original Code and all software distributed under the License are
19*0f4c859eSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*0f4c859eSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*0f4c859eSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*0f4c859eSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*0f4c859eSApple OSS Distributions * Please see the License for the specific language governing rights and
24*0f4c859eSApple OSS Distributions * limitations under the License.
25*0f4c859eSApple OSS Distributions *
26*0f4c859eSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*0f4c859eSApple OSS Distributions */
28*0f4c859eSApple OSS Distributions
29*0f4c859eSApple OSS Distributions #include <mach/mach_types.h>
30*0f4c859eSApple OSS Distributions #include <kern/task.h> /* task_ledgers */
31*0f4c859eSApple OSS Distributions #include <kern/ledger.h>
32*0f4c859eSApple OSS Distributions
33*0f4c859eSApple OSS Distributions #include <kperf/kperf.h>
34*0f4c859eSApple OSS Distributions
35*0f4c859eSApple OSS Distributions #include <kperf/buffer.h>
36*0f4c859eSApple OSS Distributions #include <kperf/context.h>
37*0f4c859eSApple OSS Distributions #include <kperf/meminfo.h>
38*0f4c859eSApple OSS Distributions
39*0f4c859eSApple OSS Distributions /* collect current memory info */
40*0f4c859eSApple OSS Distributions void
kperf_meminfo_sample(task_t task,struct meminfo * mi)41*0f4c859eSApple OSS Distributions kperf_meminfo_sample(task_t task, struct meminfo *mi)
42*0f4c859eSApple OSS Distributions {
43*0f4c859eSApple OSS Distributions ledger_amount_t credit, debit;
44*0f4c859eSApple OSS Distributions kern_return_t kr;
45*0f4c859eSApple OSS Distributions
46*0f4c859eSApple OSS Distributions assert(mi != NULL);
47*0f4c859eSApple OSS Distributions
48*0f4c859eSApple OSS Distributions BUF_INFO(PERF_MI_SAMPLE | DBG_FUNC_START);
49*0f4c859eSApple OSS Distributions
50*0f4c859eSApple OSS Distributions mi->phys_footprint = get_task_phys_footprint(task);
51*0f4c859eSApple OSS Distributions
52*0f4c859eSApple OSS Distributions kr = ledger_get_entries(task->ledger, task_ledgers.purgeable_volatile,
53*0f4c859eSApple OSS Distributions &credit, &debit);
54*0f4c859eSApple OSS Distributions if (kr == KERN_SUCCESS) {
55*0f4c859eSApple OSS Distributions mi->purgeable_volatile = credit - debit;
56*0f4c859eSApple OSS Distributions } else {
57*0f4c859eSApple OSS Distributions mi->purgeable_volatile = UINT64_MAX;
58*0f4c859eSApple OSS Distributions }
59*0f4c859eSApple OSS Distributions
60*0f4c859eSApple OSS Distributions kr = ledger_get_entries(task->ledger,
61*0f4c859eSApple OSS Distributions task_ledgers.purgeable_volatile_compressed,
62*0f4c859eSApple OSS Distributions &credit, &debit);
63*0f4c859eSApple OSS Distributions if (kr == KERN_SUCCESS) {
64*0f4c859eSApple OSS Distributions mi->purgeable_volatile_compressed = credit - debit;
65*0f4c859eSApple OSS Distributions } else {
66*0f4c859eSApple OSS Distributions mi->purgeable_volatile_compressed = UINT64_MAX;
67*0f4c859eSApple OSS Distributions }
68*0f4c859eSApple OSS Distributions
69*0f4c859eSApple OSS Distributions BUF_INFO(PERF_MI_SAMPLE | DBG_FUNC_END);
70*0f4c859eSApple OSS Distributions }
71*0f4c859eSApple OSS Distributions
72*0f4c859eSApple OSS Distributions /* log an existing sample into the buffer */
73*0f4c859eSApple OSS Distributions void
kperf_meminfo_log(struct meminfo * mi)74*0f4c859eSApple OSS Distributions kperf_meminfo_log(struct meminfo *mi)
75*0f4c859eSApple OSS Distributions {
76*0f4c859eSApple OSS Distributions BUF_DATA(PERF_MI_DATA, mi->phys_footprint, mi->purgeable_volatile,
77*0f4c859eSApple OSS Distributions mi->purgeable_volatile_compressed);
78*0f4c859eSApple OSS Distributions }
79