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- /*
- * readprofile.c - used to read /proc/profile
- *
- * Copyright (C) 1994 Alessandro Rubini
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- #include <stdio.h>
- #include <stdlib.h>
- #include <unistd.h> /* getopt() */
- #include <string.h>
-
- #define RELEASE "1.1, Jan 1995"
-
- #define S_LEN 128
-
- static char *prgname;
-
- /* These are the defaults and they cna be changed */
- static char defaultmap1[]="/usr/src/linux/System.map";
- static char defaultmap2[]="/usr/src/linux/zSystem.map";
- static char defaultpro[]="/proc/profile";
- static char optstring[]="m:p:itvarV";
-
- void usage()
- {
- fprintf(stderr,
- "%s: Usage: \"%s [options]\n"
- "\t -m <mapfile> (default = \"%s\")\n"
- "\t -p <pro-file> (default = \"%s\")\n"
- "\t -i print only info about the sampling step\n"
- "\t -t print terse data\n"
- "\t -v print verbose data\n"
- "\t -a print all symbols, even if count is 0\n"
- "\t -r reset all the counters (root only)\n"
- "\t -V print version and exit\n"
- ,prgname,prgname,defaultmap1,defaultpro);
- exit(1);
- }
-
- FILE *myopen(char *name, char *mode, int *flag)
- {
- static char cmdline[S_LEN];
-
- if (!strcmp(name+strlen(name)-3,".gz"))
- {
- *flag=1;
- sprintf(cmdline,"zcat %s", name);
- return popen(cmdline,mode);
- }
- *flag=0;
- return fopen(name,mode);
- }
-
- int main (int argc, char **argv)
- {
- FILE *pro;
- FILE *map;
- unsigned long l;
- char *proFile;
- char *mapFile;
- int add, step;
- int fn_add[2]; /* current and next address */
- char fn_name[2][S_LEN]; /* current and next name */
- char mode[8];
- int i,c,current=0;
- int optAll=0, optInfo=0, optReset=0, optTerse=0, optVerbose=0;
- char mapline[S_LEN];
- int maplineno=1;
- int popenMap, popenPro; /* flags to tell if popen() is used */
-
- #define next (current^1)
-
- prgname=argv[0];
- proFile=defaultpro;
- mapFile=defaultmap1;
-
- while ((c=getopt(argc,argv,optstring))!=-1)
- {
- switch(c)
- {
- case 'm': mapFile=optarg; break;
- case 'p': proFile=optarg; break;
- case 'a': optAll++; break;
- case 'i': optInfo++; break;
- case 't': optTerse++; break;
- case 'r': optReset++; break;
- case 'v': optVerbose++; break;
- case 'V': printf("%s Version %s\n",prgname,RELEASE); exit(0);
- default: usage();
- }
- }
-
- if (optReset)
- {
- pro=fopen(defaultpro,"w");
- if (!pro)
- {perror(proFile); exit(1);}
- fprintf(pro,"anything\n");
- fclose(pro);
- exit(0);
- }
-
- if (!(pro=myopen(proFile,"r",&popenPro)))
- {fprintf(stderr,"%s: ",prgname);perror(proFile);exit(1);}
-
- /*
- * In opening the map file, try both the default names, but exit
- * at first fail if the filename was specified on cmdline
- */
- for (map=NULL; map==NULL; )
- {
- if (!(map=myopen(mapFile,"r",&popenMap)))
- {
- fprintf(stderr,"%s: ",prgname);perror(mapFile);
- if (mapFile!=defaultmap1) exit(1);
- mapFile=defaultmap2;
- }
- }
-
- #define NEXT_WORD(where) \
- (fread((void *)where, 1,sizeof(unsigned long),pro), feof(pro) ? 0 : 1)
-
- /*
- * Init the 'next' field
- */
- if (!fgets(mapline,S_LEN,map))
- {
- fprintf(stderr,"%s: %s(%i): premature EOF\n",prgname,mapFile,maplineno);
- exit(1);
- }
- if (sscanf(mapline,"%x %s %s",&(fn_add[next]),mode,fn_name[next])!=3)
- {
- fprintf(stderr,"%s: %s(%i): wrong map line\n",prgname,mapFile, maplineno);
- exit(1);
- }
-
- add=0;
-
- if (!NEXT_WORD(&step))
- {
- fprintf(stderr,"%s: %s: premature EOF\n",prgname,proFile);
- exit(1);
- }
-
- if (optInfo)
- {
- printf(optTerse ? "%i\n" : "The sampling step in the kernel is %i bytes\n",
- step);
- exit(0);
- }
-
- /*
- * The main loop is build around the mapfile
- */
-
- while(current^=1, maplineno++, fgets(mapline,S_LEN,map))
- {
- int fn_len;
- int count=0;
-
-
- if (sscanf(mapline,"%x %s %s",&(fn_add[next]),mode,fn_name[next])!=3)
- {
- fprintf(stderr,"%s: %s(%i): wrong map line\n",
- prgname,mapFile, maplineno);
- exit(1);
- }
-
- if (!(fn_len=fn_add[next]-fn_add[current]))
- continue;
-
- if (*mode=='d' || *mode=='D') break; /* only text is profiled */
-
- while (add<fn_add[next])
- {
- if (!NEXT_WORD(&l))
- {
- fprintf(stderr,"%s: %s: premature EOF\n",prgname,proFile);
- exit(1);
- }
- count+=l; add+=step;
- }
-
- if (count || optAll)
- {
- if (optTerse)
- printf("%i %s %lg\n",
- count,fn_name[current],count/(double)fn_len);
- else if (optVerbose)
- printf("%08x %-40s %6i %8.4lf\n",
- fn_add[current],fn_name[current],count,count/(double)fn_len);
- else
- printf("%6i %-40s %8.4lf\n",
- count,fn_name[current],count/(double)fn_len);
- }
- }
-
- if (feof(map))
- {
- fprintf(stderr,"%s: %s(%i): premature EOF\n",prgname,mapFile,maplineno);
- exit(1);
- }
-
- popenPro ? pclose(pro) : fclose(pro);
- popenMap ? pclose(map) : fclose(map);
- exit(0);
- }
-
-
-