445 lines
8.9 KiB
C
445 lines
8.9 KiB
C
/*-
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* Copyright (c) 2005 Robert N. M. Watson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <err.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef FSTACK
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#include <stdint.h>
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#endif
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#include "memstat.h"
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#include "memstat_internal.h"
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const char *
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memstat_strerror(int error)
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{
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switch (error) {
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case MEMSTAT_ERROR_NOMEMORY:
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return ("Cannot allocate memory");
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case MEMSTAT_ERROR_VERSION:
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return ("Version mismatch");
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case MEMSTAT_ERROR_PERMISSION:
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return ("Permission denied");
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case MEMSTAT_ERROR_DATAERROR:
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return ("Data format error");
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case MEMSTAT_ERROR_KVM:
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return ("KVM error");
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case MEMSTAT_ERROR_KVM_NOSYMBOL:
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return ("KVM unable to find symbol");
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case MEMSTAT_ERROR_KVM_SHORTREAD:
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return ("KVM short read");
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case MEMSTAT_ERROR_UNDEFINED:
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default:
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return ("Unknown error");
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}
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}
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struct memory_type_list *
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memstat_mtl_alloc(void)
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{
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struct memory_type_list *mtlp;
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mtlp = malloc(sizeof(*mtlp));
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if (mtlp == NULL)
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return (NULL);
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LIST_INIT(&mtlp->mtl_list);
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mtlp->mtl_error = MEMSTAT_ERROR_UNDEFINED;
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return (mtlp);
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}
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struct memory_type *
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memstat_mtl_first(struct memory_type_list *list)
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{
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return (LIST_FIRST(&list->mtl_list));
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}
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struct memory_type *
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memstat_mtl_next(struct memory_type *mtp)
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{
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return (LIST_NEXT(mtp, mt_list));
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}
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void
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_memstat_mtl_empty(struct memory_type_list *list)
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{
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struct memory_type *mtp;
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while ((mtp = LIST_FIRST(&list->mtl_list))) {
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free(mtp->mt_percpu_alloc);
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free(mtp->mt_percpu_cache);
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LIST_REMOVE(mtp, mt_list);
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free(mtp);
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}
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}
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void
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memstat_mtl_free(struct memory_type_list *list)
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{
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_memstat_mtl_empty(list);
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free(list);
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}
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int
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memstat_mtl_geterror(struct memory_type_list *list)
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{
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return (list->mtl_error);
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}
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/*
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* Look for an existing memory_type entry in a memory_type list, based on the
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* allocator and name of the type. If not found, return NULL. No errno or
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* memstat error.
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*/
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struct memory_type *
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memstat_mtl_find(struct memory_type_list *list, int allocator,
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const char *name)
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{
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struct memory_type *mtp;
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LIST_FOREACH(mtp, &list->mtl_list, mt_list) {
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if ((mtp->mt_allocator == allocator ||
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allocator == ALLOCATOR_ANY) &&
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strcmp(mtp->mt_name, name) == 0)
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return (mtp);
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}
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return (NULL);
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}
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/*
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* Allocate a new memory_type with the specificed allocator type and name,
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* then insert into the list. The structure will be zero'd.
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*
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* libmemstat(3) internal function.
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*/
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struct memory_type *
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_memstat_mt_allocate(struct memory_type_list *list, int allocator,
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const char *name, int maxcpus)
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{
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struct memory_type *mtp;
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mtp = malloc(sizeof(*mtp));
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if (mtp == NULL)
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return (NULL);
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bzero(mtp, sizeof(*mtp));
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mtp->mt_allocator = allocator;
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mtp->mt_percpu_alloc = malloc(sizeof(struct mt_percpu_alloc_s) *
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maxcpus);
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mtp->mt_percpu_cache = malloc(sizeof(struct mt_percpu_cache_s) *
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maxcpus);
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strlcpy(mtp->mt_name, name, MEMTYPE_MAXNAME);
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LIST_INSERT_HEAD(&list->mtl_list, mtp, mt_list);
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return (mtp);
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}
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/*
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* Reset any libmemstat(3)-owned statistics in a memory_type record so that
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* it can be reused without incremental addition problems. Caller-owned
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* memory is left "as-is", and must be updated by the caller if desired.
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*
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* libmemstat(3) internal function.
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*/
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void
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_memstat_mt_reset_stats(struct memory_type *mtp, int maxcpus)
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{
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int i;
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mtp->mt_countlimit = 0;
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mtp->mt_byteslimit = 0;
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mtp->mt_sizemask = 0;
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mtp->mt_size = 0;
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mtp->mt_memalloced = 0;
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mtp->mt_memfreed = 0;
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mtp->mt_numallocs = 0;
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mtp->mt_numfrees = 0;
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mtp->mt_bytes = 0;
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mtp->mt_count = 0;
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mtp->mt_free = 0;
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mtp->mt_failures = 0;
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mtp->mt_sleeps = 0;
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mtp->mt_zonefree = 0;
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mtp->mt_kegfree = 0;
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for (i = 0; i < maxcpus; i++) {
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mtp->mt_percpu_alloc[i].mtp_memalloced = 0;
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mtp->mt_percpu_alloc[i].mtp_memfreed = 0;
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mtp->mt_percpu_alloc[i].mtp_numallocs = 0;
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mtp->mt_percpu_alloc[i].mtp_numfrees = 0;
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mtp->mt_percpu_alloc[i].mtp_sizemask = 0;
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mtp->mt_percpu_cache[i].mtp_free = 0;
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}
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}
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/*
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* Accessor methods for struct memory_type. Avoids encoding the structure
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* ABI into the application.
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*/
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const char *
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memstat_get_name(const struct memory_type *mtp)
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{
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return (mtp->mt_name);
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}
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int
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memstat_get_allocator(const struct memory_type *mtp)
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{
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return (mtp->mt_allocator);
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}
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uint64_t
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memstat_get_countlimit(const struct memory_type *mtp)
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{
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return (mtp->mt_countlimit);
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}
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uint64_t
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memstat_get_byteslimit(const struct memory_type *mtp)
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{
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return (mtp->mt_byteslimit);
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}
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uint64_t
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memstat_get_sizemask(const struct memory_type *mtp)
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{
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return (mtp->mt_sizemask);
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}
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uint64_t
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memstat_get_size(const struct memory_type *mtp)
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{
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return (mtp->mt_size);
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}
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uint64_t
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memstat_get_rsize(const struct memory_type *mtp)
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{
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return (mtp->mt_rsize);
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}
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uint64_t
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memstat_get_memalloced(const struct memory_type *mtp)
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{
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return (mtp->mt_memalloced);
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}
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uint64_t
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memstat_get_memfreed(const struct memory_type *mtp)
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{
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return (mtp->mt_memfreed);
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}
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uint64_t
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memstat_get_numallocs(const struct memory_type *mtp)
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{
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return (mtp->mt_numallocs);
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}
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uint64_t
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memstat_get_numfrees(const struct memory_type *mtp)
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{
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return (mtp->mt_numfrees);
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}
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uint64_t
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memstat_get_bytes(const struct memory_type *mtp)
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{
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return (mtp->mt_bytes);
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}
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uint64_t
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memstat_get_count(const struct memory_type *mtp)
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{
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return (mtp->mt_count);
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}
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uint64_t
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memstat_get_free(const struct memory_type *mtp)
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{
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return (mtp->mt_free);
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}
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uint64_t
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memstat_get_failures(const struct memory_type *mtp)
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{
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return (mtp->mt_failures);
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}
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uint64_t
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memstat_get_sleeps(const struct memory_type *mtp)
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{
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return (mtp->mt_sleeps);
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}
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void *
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memstat_get_caller_pointer(const struct memory_type *mtp, int index)
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{
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return (mtp->mt_caller_pointer[index]);
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}
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void
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memstat_set_caller_pointer(struct memory_type *mtp, int index, void *value)
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{
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mtp->mt_caller_pointer[index] = value;
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}
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uint64_t
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memstat_get_caller_uint64(const struct memory_type *mtp, int index)
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{
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return (mtp->mt_caller_uint64[index]);
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}
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void
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memstat_set_caller_uint64(struct memory_type *mtp, int index, uint64_t value)
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{
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mtp->mt_caller_uint64[index] = value;
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}
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uint64_t
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memstat_get_zonefree(const struct memory_type *mtp)
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{
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return (mtp->mt_zonefree);
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}
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uint64_t
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memstat_get_kegfree(const struct memory_type *mtp)
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{
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return (mtp->mt_kegfree);
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}
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uint64_t
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memstat_get_percpu_memalloced(const struct memory_type *mtp, int cpu)
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{
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return (mtp->mt_percpu_alloc[cpu].mtp_memalloced);
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}
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uint64_t
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memstat_get_percpu_memfreed(const struct memory_type *mtp, int cpu)
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{
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return (mtp->mt_percpu_alloc[cpu].mtp_memfreed);
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}
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uint64_t
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memstat_get_percpu_numallocs(const struct memory_type *mtp, int cpu)
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{
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return (mtp->mt_percpu_alloc[cpu].mtp_numallocs);
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}
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uint64_t
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memstat_get_percpu_numfrees(const struct memory_type *mtp, int cpu)
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{
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return (mtp->mt_percpu_alloc[cpu].mtp_numfrees);
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}
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uint64_t
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memstat_get_percpu_sizemask(const struct memory_type *mtp, int cpu)
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{
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return (mtp->mt_percpu_alloc[cpu].mtp_sizemask);
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}
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void *
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memstat_get_percpu_caller_pointer(const struct memory_type *mtp, int cpu,
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int index)
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{
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return (mtp->mt_percpu_alloc[cpu].mtp_caller_pointer[index]);
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}
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void
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memstat_set_percpu_caller_pointer(struct memory_type *mtp, int cpu,
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int index, void *value)
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{
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mtp->mt_percpu_alloc[cpu].mtp_caller_pointer[index] = value;
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}
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uint64_t
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memstat_get_percpu_caller_uint64(const struct memory_type *mtp, int cpu,
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int index)
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{
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return (mtp->mt_percpu_alloc[cpu].mtp_caller_uint64[index]);
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}
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void
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memstat_set_percpu_caller_uint64(struct memory_type *mtp, int cpu, int index,
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uint64_t value)
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{
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mtp->mt_percpu_alloc[cpu].mtp_caller_uint64[index] = value;
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}
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uint64_t
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memstat_get_percpu_free(const struct memory_type *mtp, int cpu)
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{
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return (mtp->mt_percpu_cache[cpu].mtp_free);
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}
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