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bdcbfde31e
Remove ancient SCCS tags from the tree, automated scripting, with two minor fixup to keep things compiling. All the common forms in the tree were removed with a perl script. Sponsored by: Netflix
325 lines
10 KiB
C
325 lines
10 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. 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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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/gmon.h>
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#include <stdio.h>
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#include <stdlib.h>
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/*
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* offset (in bytes) of the code from the entry address of a routine.
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* (see asgnsamples for use and explanation.)
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*/
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#define OFFSET_OF_CODE 0
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enum opermodes { dummy };
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typedef enum opermodes operandenum;
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/*
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* booleans
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*/
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typedef int bool;
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#define FALSE 0
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#define TRUE 1
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/*
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* Historical scale factor in profil(2)'s algorithm for converting
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* pc addresses to bucket numbers. This now just complicates the
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* scaling and makes bucket:pc densities of more than 1/2 useless.
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*/
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#define HISTORICAL_SCALE_2 2
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#ifndef EXTERN
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#define EXTERN extern
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#endif
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/*
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* ticks per second
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*/
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EXTERN long hz;
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EXTERN size_t histcounter_size;
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EXTERN int histcounter_type;
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EXTERN char *a_outname;
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#define A_OUTNAME "a.out"
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EXTERN char *gmonname;
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#define GMONSUM "gmon.sum"
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/*
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* a constructed arc,
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* with pointers to the namelist entry of the parent and the child,
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* a count of how many times this arc was traversed,
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* and pointers to the next parent of this child and
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* the next child of this parent.
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*/
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struct arcstruct {
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struct nl *arc_parentp; /* pointer to parent's nl entry */
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struct nl *arc_childp; /* pointer to child's nl entry */
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long arc_count; /* num calls from parent to child */
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double arc_time; /* time inherited along arc */
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double arc_childtime; /* childtime inherited along arc */
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struct arcstruct *arc_parentlist; /* parents-of-this-child list */
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struct arcstruct *arc_childlist; /* children-of-this-parent list */
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struct arcstruct *arc_next; /* list of arcs on cycle */
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unsigned short arc_cyclecnt; /* num cycles involved in */
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unsigned short arc_flags; /* see below */
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};
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typedef struct arcstruct arctype;
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/*
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* arc flags
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*/
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#define DEADARC 0x01 /* time should not propagate across the arc */
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#define ONLIST 0x02 /* arc is on list of arcs in cycles */
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/*
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* The symbol table;
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* for each external in the specified file we gather
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* its address, the number of calls and compute its share of CPU time.
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*/
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struct nl {
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const char *name; /* the name */
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unsigned long value; /* the pc entry point */
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unsigned long svalue; /* entry point aligned to histograms */
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double time; /* ticks in this routine */
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double childtime; /* cumulative ticks in children */
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long ncall; /* how many times called */
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long npropcall; /* times called by live arcs */
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long selfcalls; /* how many calls to self */
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double propfraction; /* what % of time propagates */
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double propself; /* how much self time propagates */
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double propchild; /* how much child time propagates */
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short printflag; /* should this be printed? */
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short flags; /* see below */
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int index; /* index in the graph list */
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int toporder; /* graph call chain top-sort order */
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int cycleno; /* internal number of cycle on */
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int parentcnt; /* number of live parent arcs */
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struct nl *cyclehead; /* pointer to head of cycle */
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struct nl *cnext; /* pointer to next member of cycle */
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arctype *parents; /* list of caller arcs */
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arctype *children; /* list of callee arcs */
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};
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typedef struct nl nltype;
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EXTERN nltype *nl; /* the whole namelist */
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EXTERN nltype *npe; /* the virtual end of the namelist */
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EXTERN int nname; /* the number of function names */
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#define HASCYCLEXIT 0x08 /* node has arc exiting from cycle */
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#define CYCLEHEAD 0x10 /* node marked as head of a cycle */
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#define VISITED 0x20 /* node visited during a cycle */
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/*
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* The cycle list.
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* for each subcycle within an identified cycle, we gather
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* its size and the list of included arcs.
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*/
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struct cl {
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int size; /* length of cycle */
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struct cl *next; /* next member of list */
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arctype *list[1]; /* list of arcs in cycle */
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/* actually longer */
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};
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typedef struct cl cltype;
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EXTERN arctype *archead; /* the head of arcs in current cycle list */
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EXTERN cltype *cyclehead; /* the head of the list */
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EXTERN int cyclecnt; /* the number of cycles found */
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#define CYCLEMAX 100 /* maximum cycles before cutting one of them */
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/*
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* flag which marks a nl entry as topologically ``busy''
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* flag which marks a nl entry as topologically ``not_numbered''
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*/
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#define DFN_BUSY -1
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#define DFN_NAN 0
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/*
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* namelist entries for cycle headers.
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* the number of discovered cycles.
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*/
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EXTERN nltype *cyclenl; /* cycle header namelist */
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EXTERN int ncycle; /* number of cycles discovered */
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/*
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* The header on the gmon.out file.
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* gmon.out consists of a struct phdr (defined in gmon.h)
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* and then an array of ncnt samples representing the
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* discretized program counter values.
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*
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* Backward compatible old style header
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*/
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struct ophdr {
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u_short *lpc;
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u_short *hpc;
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int ncnt;
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};
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EXTERN int debug;
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/*
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* Each discretized pc sample has
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* a count of the number of samples in its range
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*/
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EXTERN double *samples;
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EXTERN unsigned long s_lowpc; /* lowpc from the profile file */
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EXTERN unsigned long s_highpc; /* highpc from the profile file */
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/* range profiled, in historical units */
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EXTERN unsigned long lowpc, highpc;
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EXTERN unsigned sampbytes; /* number of bytes of samples */
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EXTERN int nsamples; /* number of samples */
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/* accumulated time thus far for putprofline */
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EXTERN double actime;
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EXTERN double totime; /* total time for all routines */
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EXTERN double printtime; /* total of time being printed */
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EXTERN double scale; /* scale factor converting samples to pc
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values: each sample covers scale bytes */
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EXTERN unsigned char *textspace; /* text space of a.out in core */
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/* with -C, minimum cycle size to ignore */
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EXTERN int cyclethreshold;
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/*
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* option flags, from a to z.
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*/
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EXTERN bool aflag; /* suppress static functions */
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EXTERN bool bflag; /* blurbs, too */
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EXTERN bool Cflag; /* find cut-set to eliminate cycles */
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EXTERN bool dflag; /* debugging options */
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EXTERN bool eflag; /* specific functions excluded */
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EXTERN bool Eflag; /* functions excluded with time */
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EXTERN bool fflag; /* specific functions requested */
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EXTERN bool Fflag; /* functions requested with time */
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EXTERN bool kflag; /* arcs to be deleted */
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EXTERN bool Kflag; /* use the running kernel for symbols */
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EXTERN bool sflag; /* sum multiple gmon.out files */
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EXTERN bool uflag; /* suppress symbols hidden from C */
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EXTERN bool zflag; /* zero time/called functions, too */
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/*
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* structure for various string lists
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*/
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struct stringlist {
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struct stringlist *next;
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char *string;
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};
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extern struct stringlist *elist;
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extern struct stringlist *Elist;
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extern struct stringlist *flist;
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extern struct stringlist *Flist;
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extern struct stringlist *kfromlist;
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extern struct stringlist *ktolist;
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/*
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* function declarations
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*/
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void addarc(nltype *, nltype *, long);
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bool addcycle(arctype **, arctype **);
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void addlist(struct stringlist *, char *);
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void alignentries(void);
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int arccmp(arctype *, arctype *);
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arctype *arclookup(nltype *, nltype *);
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void asgnsamples(void);
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void compresslist(void);
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bool cycleanalyze(void);
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void cyclelink(void);
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void cycletime(void);
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bool descend(nltype *, arctype **, arctype **);
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void dfn(nltype *);
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bool dfn_busy(nltype *);
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void dfn_findcycle(nltype *);
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void dfn_init(void);
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bool dfn_numbered(nltype *);
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void dfn_post_visit(nltype *);
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void dfn_pre_visit(nltype *);
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void dfn_self_cycle(nltype *);
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nltype **doarcs(void);
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void doflags(void);
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void dotime(void);
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void dumpsum(const char *);
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int elf_getnfile(const char *, char ***);
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void flatprofheader(void);
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void flatprofline(nltype *);
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void getpfile(char *);
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void gprofheader(void);
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void gprofline(register nltype *);
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int hertz(void);
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void inheritflags(nltype *);
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int kernel_getnfile(const char *, char ***);
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/*
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main();
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*/
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unsigned long max(unsigned long, unsigned long);
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int membercmp(nltype *, nltype *);
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unsigned long min(unsigned long, unsigned long);
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nltype *nllookup(unsigned long);
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bool onlist(struct stringlist *, const char *);
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FILE *openpfile(char *);
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void printblurb(const char *);
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void printchildren(nltype *);
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void printcycle(nltype *);
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void printgprof(nltype **);
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void printindex(void);
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void printmembers(nltype *);
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void printname(nltype *);
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void printparents(nltype *);
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void printprof(void);
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void printsubcycle(cltype *);
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void readsamples(FILE *);
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void sortchildren(nltype *);
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void sortmembers(nltype *);
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void sortparents(nltype *);
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void tally(struct rawarc *);
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void timepropagate(nltype *);
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int totalcmp(const void *, const void *);
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#define LESSTHAN -1
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#define EQUALTO 0
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#define GREATERTHAN 1
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#define DFNDEBUG 1
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#define CYCLEDEBUG 2
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#define ARCDEBUG 4
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#define TALLYDEBUG 8
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#define TIMEDEBUG 16
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#define SAMPLEDEBUG 32
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#define CALLDEBUG 128
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#define LOOKUPDEBUG 256
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#define PROPDEBUG 512
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#define BREAKCYCLE 1024
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#define SUBCYCLELIST 2048
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#define ANYDEBUG 4096
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