1*699cd480SApple OSS Distributions /*
2*699cd480SApple OSS Distributions * Copyright (c) 2011 Apple Computer, Inc. All rights reserved.
3*699cd480SApple OSS Distributions *
4*699cd480SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*699cd480SApple OSS Distributions *
6*699cd480SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*699cd480SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*699cd480SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*699cd480SApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*699cd480SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*699cd480SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*699cd480SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*699cd480SApple OSS Distributions * terms of an Apple operating system software license agreement.
14*699cd480SApple OSS Distributions *
15*699cd480SApple OSS Distributions * Please obtain a copy of the License at
16*699cd480SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*699cd480SApple OSS Distributions *
18*699cd480SApple OSS Distributions * The Original Code and all software distributed under the License are
19*699cd480SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*699cd480SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*699cd480SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*699cd480SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*699cd480SApple OSS Distributions * Please see the License for the specific language governing rights and
24*699cd480SApple OSS Distributions * limitations under the License.
25*699cd480SApple OSS Distributions *
26*699cd480SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*699cd480SApple OSS Distributions */
28*699cd480SApple OSS Distributions
29*699cd480SApple OSS Distributions #include <mach/mach_types.h>
30*699cd480SApple OSS Distributions #include <kern/task.h> /* task_ledgers */
31*699cd480SApple OSS Distributions #include <kern/ledger.h>
32*699cd480SApple OSS Distributions
33*699cd480SApple OSS Distributions #include <kperf/kperf.h>
34*699cd480SApple OSS Distributions
35*699cd480SApple OSS Distributions #include <kperf/buffer.h>
36*699cd480SApple OSS Distributions #include <kperf/context.h>
37*699cd480SApple OSS Distributions #include <kperf/meminfo.h>
38*699cd480SApple OSS Distributions
39*699cd480SApple OSS Distributions /* collect current memory info */
40*699cd480SApple OSS Distributions void
kperf_meminfo_sample(task_t task,struct meminfo * mi)41*699cd480SApple OSS Distributions kperf_meminfo_sample(task_t task, struct meminfo *mi)
42*699cd480SApple OSS Distributions {
43*699cd480SApple OSS Distributions ledger_amount_t credit, debit;
44*699cd480SApple OSS Distributions kern_return_t kr;
45*699cd480SApple OSS Distributions
46*699cd480SApple OSS Distributions assert(mi != NULL);
47*699cd480SApple OSS Distributions
48*699cd480SApple OSS Distributions BUF_INFO(PERF_MI_SAMPLE | DBG_FUNC_START);
49*699cd480SApple OSS Distributions
50*699cd480SApple OSS Distributions mi->phys_footprint = get_task_phys_footprint(task);
51*699cd480SApple OSS Distributions
52*699cd480SApple OSS Distributions kr = ledger_get_entries(task->ledger, task_ledgers.purgeable_volatile,
53*699cd480SApple OSS Distributions &credit, &debit);
54*699cd480SApple OSS Distributions if (kr == KERN_SUCCESS) {
55*699cd480SApple OSS Distributions mi->purgeable_volatile = credit - debit;
56*699cd480SApple OSS Distributions } else {
57*699cd480SApple OSS Distributions mi->purgeable_volatile = UINT64_MAX;
58*699cd480SApple OSS Distributions }
59*699cd480SApple OSS Distributions
60*699cd480SApple OSS Distributions kr = ledger_get_entries(task->ledger,
61*699cd480SApple OSS Distributions task_ledgers.purgeable_volatile_compressed,
62*699cd480SApple OSS Distributions &credit, &debit);
63*699cd480SApple OSS Distributions if (kr == KERN_SUCCESS) {
64*699cd480SApple OSS Distributions mi->purgeable_volatile_compressed = credit - debit;
65*699cd480SApple OSS Distributions } else {
66*699cd480SApple OSS Distributions mi->purgeable_volatile_compressed = UINT64_MAX;
67*699cd480SApple OSS Distributions }
68*699cd480SApple OSS Distributions
69*699cd480SApple OSS Distributions BUF_INFO(PERF_MI_SAMPLE | DBG_FUNC_END);
70*699cd480SApple OSS Distributions }
71*699cd480SApple OSS Distributions
72*699cd480SApple OSS Distributions /* log an existing sample into the buffer */
73*699cd480SApple OSS Distributions void
kperf_meminfo_log(struct meminfo * mi)74*699cd480SApple OSS Distributions kperf_meminfo_log(struct meminfo *mi)
75*699cd480SApple OSS Distributions {
76*699cd480SApple OSS Distributions BUF_DATA(PERF_MI_DATA, mi->phys_footprint, mi->purgeable_volatile,
77*699cd480SApple OSS Distributions mi->purgeable_volatile_compressed);
78*699cd480SApple OSS Distributions }
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