b89261ba01
Due to differences in (mainly) measuring and accumulating CPU times, the two top programs end up serving different purposes: the NetBSD top is a system administration tool, while the MINIX3 top (now mtop) is a performance debugging tool. Therefore, we keep both. The newly imported BSD top has a few MINIX3-specific changes. CPU statistics separate system time from kernel time, rather than kernel time from time spent on handling interrupts. Memory statistics show numbers that are currently relevant for MINIX3. Swap statistics are disabled entirely. All of these changes effectively bring it closer to how mtop already worked as well. Change-Id: I9611917cb03e164ddf012c5def6da0e7fede826d
153 lines
4.4 KiB
C
153 lines
4.4 KiB
C
/*
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* Copyright (c) 1984 through 2008, William LeFebvre
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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 are met:
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*
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* * 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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*
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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*
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* * Neither the name of William LeFebvre nor the names of other
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <stdio.h>
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#ifdef HAVE_LIMITS_H
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#include <limits.h>
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#endif
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#if TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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#else
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# if HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else
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# include <time.h>
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# endif
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#endif
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#ifdef __NetBSD__
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#include <util.h>
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#else
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#define emalloc malloc
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#define estrdup strdup
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#define ecalloc calloc
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#define erealloc realloc
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#endif
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#if STDC_HEADERS
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#include <string.h>
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#include <stdlib.h>
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#define setbuffer(f, b, s) setvbuf((f), (b), (b) ? _IOFBF : _IONBF, (s))
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#define memzero(a, b) memset((a), 0, (b))
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#else /* !STDC_HEADERS */
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#ifndef HAVE_STRCHR
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#define strchr(a, b) index((a), (b))
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#define strrchr(a, b) rindex((a), (b))
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#endif /* HAVE_STRCHR */
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#ifdef HAVE_MEMCPY
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#define memzero(a, b) memset((a), 0, (b))
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#else
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#define memcpy(a, b, c) bcopy((b), (a), (c))
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#define memzero(a, b) bzero((a), (b))
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#define memcmp(a, b, c) bcmp((a), (b), (c))
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#endif /* HAVE_MEMCPY */
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#else
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#endif
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char *getenv();
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caddr_t malloc();
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#endif /* STDC_HEADERS */
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/* If snprintf or vsnprintf aren't available, we substitute our own.
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But we have to include stdarg in order to be able to define them.
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*/
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#ifdef HAVE_STDARG_H
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#include <stdarg.h>
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#ifndef HAVE_SNPRINTF
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int ap_snprintf(char *buf, size_t len, const char *format,...);
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#define snprintf ap_snprintf
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#endif
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#ifndef HAVE_VSNPRINTF
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int ap_vsnprintf(char *buf, size_t len, const char *format,va_list ap);
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#define vsnprintf ap_vsnprintf
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#endif
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#endif
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#if !HAVE_PID_T
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typedef long pid_t;
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#endif
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#if !HAVE_TIME_T
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typedef long time_t;
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#endif
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#if !HAVE_UID_T
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typedef long uid_t;
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#endif
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#ifndef INT_MAX
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#define INT_MAX (0x7fffffff)
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#endif
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#ifndef UINT_MAX
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#define UINT_MAX (0xffffffffU)
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#endif
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/* we must have both sighold and sigrelse to use them */
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#if defined(HAVE_SIGHOLD) && !defined(HAVE_SIGRELSE)
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#undef HAVE_SIGHOLD
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_SYSEXITS_H
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#include <sysexits.h>
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#else
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#define EX_OK 0 /* successful termination */
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#define EX_USAGE 64 /* command line usage error */
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#define EX_DATAERR 65 /* data format error */
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#define EX_NOINPUT 66 /* cannot open input */
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#define EX_NOUSER 67 /* addressee unknown */
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#define EX_NOHOST 68 /* host name unknown */
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#define EX_UNAVAILABLE 69 /* service unavailable */
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#define EX_SOFTWARE 70 /* internal software error */
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#define EX_OSERR 71 /* system error (e.g., can't fork) */
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#define EX_OSFILE 72 /* critical OS file missing */
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#define EX_CANTCREAT 73 /* can't create (user) output file */
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#define EX_IOERR 74 /* input/output error */
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#define EX_TEMPFAIL 75 /* temp failure; user is invited to retry */
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#define EX_PROTOCOL 76 /* remote error in protocol */
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#define EX_NOPERM 77 /* permission denied */
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#define EX_CONFIG 78 /* configuration error */
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#endif
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