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Makefile
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Makefile.depend
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libmemstat.3
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memstat.c
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memstat.h
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memstat_all.c
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memstat_internal.h
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memstat_malloc.c
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memstat_uma.c
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Editing: memstat.h
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * 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); /* * General malloc routines. */ size_t memstat_malloc_zone_get_count(void); size_t memstat_malloc_zone_get_size(size_t n); int memstat_malloc_zone_used(const struct memory_type *mtp, size_t n); /* * 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); uint64_t memstat_get_xdomain(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_ */
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