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freebsd/lib/libkvm/kvm.h
John Baldwin f110b23b7d Add a new routine kvm_getcptime(3) for fetching the equivalent of
'kern.cp_time'.  For a live kernel it uses the sysctl.  For a crashdump,
it first checks to see if the kernel has a 'cp_time' global symbol.  If
it does, it uses that.  If that doesn't work, when it uses the recently
added kvm_getmaxcpu(3) and kvm_getpcpu(3) routines to walk all the CPUs
and sum up their counters.

MFC after:	1 week
2008-08-19 21:30:36 +00:00

95 lines
3.1 KiB
C

/*-
* Copyright (c) 1989, 1993
* The Regents of the University of California. 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.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)kvm.h 8.1 (Berkeley) 6/2/93
* $FreeBSD$
*/
#ifndef _KVM_H_
#define _KVM_H_
#include <sys/cdefs.h>
#include <sys/_types.h>
#include <nlist.h>
/* Default version symbol. */
#define VRS_SYM "_version"
#define VRS_KEY "VERSION"
#ifndef _SIZE_T_DECLARED
typedef __size_t size_t;
#define _SIZE_T_DECLARED
#endif
#ifndef _SSIZE_T_DECLARED
typedef __ssize_t ssize_t;
#define _SSIZE_T_DECLARED
#endif
typedef struct __kvm kvm_t;
struct kinfo_proc;
struct proc;
struct kvm_swap {
char ksw_devname[32];
int ksw_used;
int ksw_total;
int ksw_flags;
int ksw_reserved1;
int ksw_reserved2;
};
#define SWIF_DEV_PREFIX 0x0002
__BEGIN_DECLS
int kvm_close(kvm_t *);
char **kvm_getargv(kvm_t *, const struct kinfo_proc *, int);
int kvm_getcptime(kvm_t *, long *);
char **kvm_getenvv(kvm_t *, const struct kinfo_proc *, int);
char *kvm_geterr(kvm_t *);
char *kvm_getfiles(kvm_t *, int, int, int *);
int kvm_getloadavg(kvm_t *, double [], int);
int kvm_getmaxcpu(kvm_t *);
void *kvm_getpcpu(kvm_t *, int);
struct kinfo_proc *
kvm_getprocs(kvm_t *, int, int, int *);
int kvm_getswapinfo(kvm_t *, struct kvm_swap *, int, int);
int kvm_nlist(kvm_t *, struct nlist *);
kvm_t *kvm_open
(const char *, const char *, const char *, int, const char *);
kvm_t *kvm_openfiles
(const char *, const char *, const char *, int, char *);
ssize_t kvm_read(kvm_t *, unsigned long, void *, size_t);
ssize_t kvm_uread
(kvm_t *, struct kinfo_proc *, unsigned long, char *, size_t);
ssize_t kvm_write(kvm_t *, unsigned long, const void *, size_t);
__END_DECLS
#endif /* !_KVM_H_ */