/*
* Copyright (c) 2011 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <mach/mach_types.h>
#include <kern/task.h> /* task_ledgers */
#include <kern/ledger.h>
#include <kperf/kperf.h>
#include <kperf/buffer.h>
#include <kperf/context.h>
#include <kperf/meminfo.h>
/* collect current memory info */
void
kperf_meminfo_sample(task_t task, struct meminfo *mi)
{
ledger_amount_t credit, debit;
kern_return_t kr;
assert(mi != NULL);
BUF_INFO(PERF_MI_SAMPLE | DBG_FUNC_START);
mi->phys_footprint = get_task_phys_footprint(task);
kr = ledger_get_entries(task->ledger, task_ledgers.purgeable_volatile,
&credit, &debit);
if (kr == KERN_SUCCESS) {
mi->purgeable_volatile = credit - debit;
} else {
mi->purgeable_volatile = UINT64_MAX;
}
kr = ledger_get_entries(task->ledger,
task_ledgers.purgeable_volatile_compressed,
&credit, &debit);
if (kr == KERN_SUCCESS) {
mi->purgeable_volatile_compressed = credit - debit;
} else {
mi->purgeable_volatile_compressed = UINT64_MAX;
}
BUF_INFO(PERF_MI_SAMPLE | DBG_FUNC_END);
}
/* log an existing sample into the buffer */
void
kperf_meminfo_log(struct meminfo *mi)
{
BUF_DATA(PERF_MI_DATA, mi->phys_footprint, mi->purgeable_volatile,
mi->purgeable_volatile_compressed);
}