mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
170 lines
7.0 KiB
C
170 lines
7.0 KiB
C
/*-
|
|
* Copyright (c) 2005 Robert N. M. Watson
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MEMSTAT_H_
|
|
#define _MEMSTAT_H_
|
|
|
|
/*
|
|
* Amount of caller data to maintain for each caller data slot. Applications
|
|
* must not request more than this number of caller save data, or risk
|
|
* corrupting internal libmemstat(3) data structures. A compile time check
|
|
* in the application is probably appropriate.
|
|
*/
|
|
#define MEMSTAT_MAXCALLER 16
|
|
|
|
/*
|
|
* libmemstat(3) is able to extract memory data from different allocators;
|
|
* when it does so, it tags which allocator it got the data from so that
|
|
* consumers can determine which fields are usable, as data returned varies
|
|
* some.
|
|
*/
|
|
#define ALLOCATOR_UNKNOWN 0
|
|
#define ALLOCATOR_MALLOC 1
|
|
#define ALLOCATOR_UMA 2
|
|
#define ALLOCATOR_ANY 255
|
|
|
|
/*
|
|
* Library maximum type name. Should be max(set of name maximums over
|
|
* various allocators).
|
|
*/
|
|
#define MEMTYPE_MAXNAME 32
|
|
|
|
/*
|
|
* Library error conditions, mostly from the underlying data sources. On
|
|
* failure, functions typically return (-1) or (NULL); on success, (0) or a
|
|
* valid data pointer. The error from the last operation is stored in
|
|
* struct memory_type_list, and accessed via memstat_get_error(list).
|
|
*/
|
|
#define MEMSTAT_ERROR_UNDEFINED 0 /* Initialization value. */
|
|
#define MEMSTAT_ERROR_NOMEMORY 1 /* Out of memory. */
|
|
#define MEMSTAT_ERROR_VERSION 2 /* Unsupported version. */
|
|
#define MEMSTAT_ERROR_PERMISSION 3 /* Permission denied. */
|
|
#define MEMSTAT_ERROR_DATAERROR 5 /* Error in stat data. */
|
|
#define MEMSTAT_ERROR_KVM 6 /* See kvm_geterr() for err. */
|
|
#define MEMSTAT_ERROR_KVM_NOSYMBOL 7 /* Symbol not available. */
|
|
#define MEMSTAT_ERROR_KVM_SHORTREAD 8 /* Short kvm_read return. */
|
|
|
|
/*
|
|
* Forward declare struct memory_type, which holds per-type properties and
|
|
* statistics. This is an opaque type, to be frobbed only from within the
|
|
* library, in order to avoid building ABI assumptions into the application.
|
|
* Accessor methods should be used to get and sometimes set the fields from
|
|
* consumers of the library.
|
|
*/
|
|
struct memory_type;
|
|
|
|
/*
|
|
* struct memory_type_list is the head of a list of memory types and
|
|
* statistics.
|
|
*/
|
|
struct memory_type_list;
|
|
|
|
__BEGIN_DECLS
|
|
/*
|
|
* Functions that operate without memory type or memory type list context.
|
|
*/
|
|
const char *memstat_strerror(int error);
|
|
|
|
/*
|
|
* Functions for managing memory type and statistics data.
|
|
*/
|
|
struct memory_type_list *memstat_mtl_alloc(void);
|
|
struct memory_type *memstat_mtl_first(struct memory_type_list *list);
|
|
struct memory_type *memstat_mtl_next(struct memory_type *mtp);
|
|
struct memory_type *memstat_mtl_find(struct memory_type_list *list,
|
|
int allocator, const char *name);
|
|
void memstat_mtl_free(struct memory_type_list *list);
|
|
int memstat_mtl_geterror(struct memory_type_list *list);
|
|
|
|
/*
|
|
* Functions to retrieve data from a live kernel using sysctl.
|
|
*/
|
|
int memstat_sysctl_all(struct memory_type_list *list, int flags);
|
|
int memstat_sysctl_malloc(struct memory_type_list *list, int flags);
|
|
int memstat_sysctl_uma(struct memory_type_list *list, int flags);
|
|
|
|
/*
|
|
* Functions to retrieve data from a kernel core (or /dev/kmem).
|
|
*/
|
|
int memstat_kvm_all(struct memory_type_list *list, void *kvm_handle);
|
|
int memstat_kvm_malloc(struct memory_type_list *list, void *kvm_handle);
|
|
int memstat_kvm_uma(struct memory_type_list *list, void *kvm_handle);
|
|
|
|
/*
|
|
* Accessor methods for struct memory_type.
|
|
*/
|
|
const char *memstat_get_name(const struct memory_type *mtp);
|
|
int memstat_get_allocator(const struct memory_type *mtp);
|
|
uint64_t memstat_get_countlimit(const struct memory_type *mtp);
|
|
uint64_t memstat_get_byteslimit(const struct memory_type *mtp);
|
|
uint64_t memstat_get_sizemask(const struct memory_type *mtp);
|
|
uint64_t memstat_get_size(const struct memory_type *mtp);
|
|
uint64_t memstat_get_rsize(const struct memory_type *mtp);
|
|
uint64_t memstat_get_memalloced(const struct memory_type *mtp);
|
|
uint64_t memstat_get_memfreed(const struct memory_type *mtp);
|
|
uint64_t memstat_get_numallocs(const struct memory_type *mtp);
|
|
uint64_t memstat_get_numfrees(const struct memory_type *mtp);
|
|
uint64_t memstat_get_bytes(const struct memory_type *mtp);
|
|
uint64_t memstat_get_count(const struct memory_type *mtp);
|
|
uint64_t memstat_get_free(const struct memory_type *mtp);
|
|
uint64_t memstat_get_failures(const struct memory_type *mtp);
|
|
uint64_t memstat_get_sleeps(const struct memory_type *mtp);
|
|
void *memstat_get_caller_pointer(const struct memory_type *mtp,
|
|
int index);
|
|
void memstat_set_caller_pointer(struct memory_type *mtp,
|
|
int index, void *value);
|
|
uint64_t memstat_get_caller_uint64(const struct memory_type *mtp,
|
|
int index);
|
|
void memstat_set_caller_uint64(struct memory_type *mtp, int index,
|
|
uint64_t value);
|
|
uint64_t memstat_get_zonefree(const struct memory_type *mtp);
|
|
uint64_t memstat_get_kegfree(const struct memory_type *mtp);
|
|
uint64_t memstat_get_percpu_memalloced(const struct memory_type *mtp,
|
|
int cpu);
|
|
uint64_t memstat_get_percpu_memfreed(const struct memory_type *mtp,
|
|
int cpu);
|
|
uint64_t memstat_get_percpu_numallocs(const struct memory_type *mtp,
|
|
int cpu);
|
|
uint64_t memstat_get_percpu_numfrees(const struct memory_type *mtp,
|
|
int cpu);
|
|
uint64_t memstat_get_percpu_sizemask(const struct memory_type *mtp,
|
|
int cpu);
|
|
void *memstat_get_percpu_caller_pointer(
|
|
const struct memory_type *mtp, int cpu, int index);
|
|
void memstat_set_percpu_caller_pointer(struct memory_type *mtp,
|
|
int cpu, int index, void *value);
|
|
uint64_t memstat_get_percpu_caller_uint64(
|
|
const struct memory_type *mtp, int cpu, int index);
|
|
void memstat_set_percpu_caller_uint64(struct memory_type *mtp,
|
|
int cpu, int index, uint64_t value);
|
|
uint64_t memstat_get_percpu_free(const struct memory_type *mtp,
|
|
int cpu);
|
|
__END_DECLS
|
|
|
|
#endif /* !_MEMSTAT_H_ */
|