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Comment:Refactored code
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SHA1: 99558b2093a3a0acf5d05352a0c1e29101a1a4ef
User & Date: rkeene on 2014-01-21 00:25:01
Other Links: manifest | tags
Context
2014-01-21
00:31
Updated to attempt to free allocated memory from statgrab check-in: eec9ca6159 user: rkeene tags: trunk
00:25
Refactored code check-in: 99558b2093 user: rkeene tags: trunk
00:24
Rebuilt configure script check-in: fc514afcf6 user: rkeene tags: trunk
Changes
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Modified freecolor.c from [62178048bb] to [23ac99bb04].

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#ifndef NO_GETOPT
#include <getopt.h>
#endif
#define BARLEN 35
#define HEADERLEN 14
#define VERSION "0.8.10"


extern char *optarg;
extern int optind, opterr, optopt;

struct freecolor_meminfo {
	unsigned long totalram;  /* Total usable main memory size */
	unsigned long freeram;   /* Available memory size */
	unsigned long sharedram; /* Amount of shared memory */
	unsigned long bufferram; /* Memory used by buffers */
	unsigned long cachedram; /* Memory used for I/O cache */
	unsigned long totalswap; /* Total swap space size */
	unsigned long freeswap;  /* swap space still available */
};

void bargraph(float percent, float secondper, char marks[BARLEN+HEADERLEN+1],int usefull) {
  char percentone[BARLEN+1], percenttwo[BARLEN+1], remain[BARLEN+1];
  unsigned int numberofmarks, numofmarkstwo, remainnum;

  numberofmarks=(int) ((float) (BARLEN*(percent/100)));
  if (!usefull) numofmarkstwo=(int) ((float) (BARLEN*(secondper/100))); else numofmarkstwo=(BARLEN-numberofmarks);

	if (!usefull) {
		numofmarkstwo = (int) ((float) (BARLEN * (secondper / 100)));
	} else {
		numofmarkstwo = (BARLEN - numberofmarks);
	}

  remainnum=BARLEN-(numberofmarks+numofmarkstwo);
  memset(percentone, '#', numberofmarks);
  memset(percenttwo, '%', numofmarkstwo);
  memset(remain, '.', remainnum);

  percentone[numberofmarks]=0;
  percenttwo[numofmarkstwo]=0;

  remain[remainnum]=0;

  snprintf(marks, BARLEN+HEADERLEN+1, "%s\033[1;31m%s\033[1;37m%s", percentone, percenttwo, remain);

  return;
}

#ifndef HAVE_LIBSTATGRAB
/*
  Extracted alot from sysinfo.c (part of the procps package?) by
  Michael K. Johnson <johnsonm@redhat.com>
*/
unsigned long get_meminfo(char searchfor[12]) {
  FILE *fd;
  unsigned long value=0, results=0;
  char buffer[256]; /* Paranoia, reallly big buffer. */
  char feildname[12];
  if ((fd=fopen(PROC_MEMINFO, "r"))==NULL) return(0);
	char buffer[256];
	char fieldname[12];

	fd = fopen(PROC_MEMINFO, "r");
	if (fd == NULL) {
		return(0);
	}

  while (!feof(fd)) {
    fgets(buffer, sizeof(buffer), fd);
    sscanf(buffer,"%11s%lu",feildname,&value);
    if (strcmp(feildname,searchfor)==0) results+=(value*1024);
		sscanf(buffer,"%11s%lu",fieldname,&value);
		if (strcmp(fieldname, searchfor) == 0) {
			results+=(value*1024);
  }
	}

  fclose(fd);

  return(results);
}
#endif

int main(int argc, char *argv[]) {
  float percentram, percentswap, percentbuffer, percentused, percentfree;
  float ramfree, ramtotal, swapfree, swaptotal, doloop=0, cachedbuffer, totaltotal;
  char realbarchart[BARLEN+HEADERLEN+1], swapbarchart[BARLEN+HEADERLEN+1], totalbarchart[BARLEN+HEADERLEN+1];
  int i, dototals=0, doold=0, linestoup=2;
  unsigned long meminfo_cached, divisor=1024;
#ifndef HAVE_LIBSTATGRAB
  struct sysinfo sinfo;
int get_all_meminfo(struct freecolor_meminfo *retval) {
	struct sysinfo sinfo;
	unsigned long meminfo_cached;

	meminfo_cached = get_meminfo("Cached:");
	sysinfo(&sinfo);

	retval->totalram  = sinfo.totalram;
	retval->freeram   = sinfo.freeram;
	retval->sharedram = sinfo.sharedram;
	retval->bufferram = sinfo.bufferram;
	retval->totalswap = sinfo.totalswap;
	retval->freeswap  = sinfo.freeswap;

  meminfo_cached=get_meminfo("Cached:");
	retval->cachedram = meminfo_cached;

	return(0);
}
#else
int get_all_meminfo(struct freecolor_meminfo *retval) {
	static int init_called = 0;
  sg_mem_stats *mem_stats=NULL;
  sg_swap_stats *swap_stats=NULL;
  struct systeminfo_st {
	sg_mem_stats *mem_stats;
	sg_swap_stats *swap_stats;

    unsigned long totalram;  /* Total usable main memory size */
    unsigned long freeram;   /* Available memory size */
    unsigned long sharedram; /* Amount of shared memory */
	if (init_called == 0) {
    unsigned long bufferram; /* Memory used by buffers */
    unsigned long totalswap; /* Total swap space size */
    unsigned long freeswap;  /* swap space still available */
  } sinfo;
		init_called = 1;

  sg_init();

#ifdef HAVE_STATGRAB_DROP_PRIVILEGES
  /* Drop setuid/setgid privileges. */
  if (sg_drop_privileges() != 0) {
    perror("Error. Failed to drop privileges");
    return 1;
			return(-1);
  }
#endif

	}

	mem_stats = sg_get_mem_stats();
	swap_stats = sg_get_swap_stats();

	if (mem_stats == NULL || swap_stats == NULL) {
		return(-1);
	}

	retval->totalram  = mem_stats->total;
	retval->freeram   = mem_stats->free;
	retval->cachedram = mem_stats->cache;
	retval->sharedram = 0;
	retval->bufferram = 0;
	retval->totalswap = swap_stats->total;
	retval->freeswap  = swap_stats->free;

	return(0);
}
#endif

int main(int argc, char **argv) {
	struct freecolor_meminfo sinfo;
	unsigned long cachedbuffer, divisor;
	float percentram, percentswap, percentbuffer, percentused, percentfree;
	float ramfree, ramtotal, swapfree, swaptotal, doloop, totaltotal;
	char realbarchart[BARLEN  +HEADERLEN + 1], swapbarchart[BARLEN + HEADERLEN + 1], totalbarchart[BARLEN + HEADERLEN + 1];
	int i, dototals, doold, linestoup;
	int gam_ret;

	/* Set defaults */
	divisor = 1024;
	doold = 0;
	linestoup = 2;
	dototals = 0;
	doloop = 0;

	/* Get arguments */
#ifdef NO_GETOPT
  for (i=1;i<argc;i++) {
    if (argv[i][0]=='-') {
		if (argv[i][0] != '-') {
			break;
		}

      switch(argv[i][1]) {
        case 's' : 
				if (argc > (i+1)) {
           if (argc>(i+1)) { doloop=atof(argv[i+1]); i++; }
					doloop=atof(argv[i+1]); i++;
				}
           break;
#else
  while ((i=getopt(argc, argv, "obkmVs:t")) != -1) {
  if (i=='?') { printf("usage: %s [-b|-k|-m] [-o] [-t] [-s delay] [-V]\n",argv[0]); return(1); }
    switch(i) {
        case 's' : 
           doloop=atof(optarg);
           break;
#endif
#endif /* NO_GETOPT */
        case 'b' : divisor=1; break;
        case 'k' : divisor=1024; break;
        case 'm' : divisor=1048576; break;
        case 'V' : printf("freecolor version %s\n", VERSION); return(0);
        case 't' : dototals=1; linestoup++; break;
        case 'o' : doold=1; linestoup++; break;
#ifdef NO_GETOPT
			case '?' :  printf("usage: %s [-b|-k|-m] [-o] [-t] [-s delay] [-V]\n",argv[0]); return(1);
        default  : printf("%s: illegal option -- %c\n",argv[0],argv[i][1]); printf("usage: %s [-b|-k|-m] [-t] [-s delay] [-V]\n",argv[0]); return(1);
      }
    }
  }
#else

	/* Display information */
  	}
  }
#endif
  while(1) {
#ifndef HAVE_LIBSTATGRAB
    sysinfo(&sinfo);
		gam_ret = get_all_meminfo(&sinfo);
#else
  if(((mem_stats=sg_get_mem_stats()) == NULL) || (swap_stats=sg_get_swap_stats()) == NULL) {
    printf("Couldn't get memory information, exiting.\n");
    return(-1);
		if (gam_ret < 0) {
			fprintf(stderr, "Error getting memory information.\n");

			return(1);
  }
  meminfo_cached=mem_stats->cache;
  sinfo.totalram=mem_stats->total;
  sinfo.freeram=mem_stats->free;
  sinfo.sharedram=0;

		ramtotal  = sinfo.totalram;
		ramfree   = sinfo.freeram;
		swapfree  = sinfo.freeswap;
  sinfo.bufferram=0;
  sinfo.totalswap=swap_stats->total;
  sinfo.freeswap=swap_stats->free;
		swaptotal = sinfo.totalswap;

#endif
    ramtotal=sinfo.totalram;
    cachedbuffer=sinfo.bufferram+meminfo_cached;
    ramfree=sinfo.freeram;
		totaltotal   = sinfo.totalram + sinfo.totalswap;
		cachedbuffer = sinfo.bufferram + sinfo.cachedram;

    swapfree=sinfo.freeswap;
    swaptotal=sinfo.totalswap;
    totaltotal=(sinfo.totalram+sinfo.totalswap);
    percentram=(float) ((ramfree / ramtotal)*100);
    percentbuffer=(float) ((cachedbuffer/ramtotal)*100);
    percentfree=(float) (((sinfo.freeram+sinfo.freeswap+meminfo_cached+sinfo.bufferram)/totaltotal)*100);
    percentused=(int) (100-((int) percentfree));
    if (!(swaptotal==0)) { percentswap=(float) ((swapfree/swaptotal)*100); } else { percentswap=0; }
		percentfree   = (float) (((sinfo.freeram + sinfo.freeswap + cachedbuffer) / totaltotal) * 100);
		percentused   = (int) (100 - ((int) percentfree));

		if (swaptotal!=0) {
			percentswap = (float) (( swapfree / swaptotal) * 100);
		} else {
			percentswap = 0;
		}

    bargraph(percentswap,0,swapbarchart,0);
    bargraph(percentram,percentbuffer,realbarchart,0);
    bargraph((int) percentfree,(int) percentused,totalbarchart,1);

    if (!doold) {
      printf("Physical  : \033[1;30m[\033[1;32m%s\033[1;30m]\033[1;37m %i\033[0;31m%%\033[0m\t(%lu/%lu)\n", realbarchart ,(int) (percentram+percentbuffer), (unsigned long) (ramfree+cachedbuffer)/divisor, (unsigned long) ramtotal/divisor);
      printf("Swap      : \033[1;30m[\033[1;32m%s\033[1;30m]\033[1;37m %i\033[0;31m%%\033[0m\t(%lu/%lu)\n",swapbarchart ,(int) percentswap,(unsigned long) swapfree/divisor, (unsigned long) swaptotal/divisor);
      if (dototals) 
      printf("Total     : \033[1;30m[\033[1;32m%s\033[1;30m]\033[1;37m \033[0m(%lu=%lu+%lu)\n", totalbarchart, (unsigned long) (sinfo.totalram+sinfo.totalswap)/divisor,(unsigned long) ((sinfo.freeram+sinfo.freeswap)/divisor), (unsigned long) ((totaltotal-((sinfo.freeram+sinfo.freeswap+cachedbuffer)))/divisor));
			printf("Physical  : \033[1;30m[\033[1;32m%s\033[1;30m]\033[1;37m %i\033[0;31m%%\033[0m\t(%lu/%lu)\n",
			    realbarchart,
			    (int) (percentram + percentbuffer),
			    (unsigned long) (ramfree + cachedbuffer) / divisor,
			    (unsigned long) ramtotal/divisor
			);

			printf("Swap      : \033[1;30m[\033[1;32m%s\033[1;30m]\033[1;37m %i\033[0;31m%%\033[0m\t(%lu/%lu)\n",
			    swapbarchart,
			     (int) percentswap,
			     (unsigned long) swapfree / divisor,
			     (unsigned long) swaptotal/divisor
			);

			if (dototals) {
				printf("Total     : \033[1;30m[\033[1;32m%s\033[1;30m]\033[1;37m \033[0m(%lu=%lu+%lu)\n",
				    totalbarchart,
				    (unsigned long) (sinfo.totalram + sinfo.totalswap) / divisor,
				    (unsigned long) ((sinfo.freeram + sinfo.freeswap) / divisor),
				    (unsigned long) ((totaltotal - ((sinfo.freeram + sinfo.freeswap + cachedbuffer))) / divisor)
				);
			}
    } else {
      printf("             total       used       free     shared    buffers     cached\n");
      printf("Mem:  %12lu %10lu %10lu %10lu %10lu %10lu\n",(sinfo.totalram/divisor), (sinfo.totalram-sinfo.freeram)/divisor, (sinfo.freeram/divisor), (sinfo.sharedram/divisor), (sinfo.bufferram/divisor), (((unsigned long) cachedbuffer)/divisor)); 
      printf("Swap: %12lu %10lu %10lu\n",(sinfo.totalswap/divisor), ((sinfo.totalswap-sinfo.freeswap)/divisor), (sinfo.freeswap/divisor));
      if (dototals) printf("Total: %11lu = (%8lu (used) + %8lu (free))\n",(long) totaltotal/divisor,(((long) totaltotal)-((sinfo.freeram+sinfo.freeswap)))/divisor,(sinfo.freeram+sinfo.freeswap+((unsigned long) cachedbuffer))/divisor);
			printf("Mem:  %12lu %10lu %10lu %10lu %10lu %10lu\n",
			    (unsigned long) (sinfo.totalram / divisor),
			    (unsigned long) ((sinfo.totalram - sinfo.freeram) / divisor),
			    (unsigned long) (sinfo.freeram / divisor),
			    (unsigned long) (sinfo.sharedram / divisor),
			    (unsigned long) (sinfo.bufferram / divisor),
			    (unsigned long) (cachedbuffer / divisor)
			); 

			printf("Swap: %12lu %10lu %10lu\n",
			    (unsigned long) (sinfo.totalswap / divisor),
			    (unsigned long) ((sinfo.totalswap - sinfo.freeswap) / divisor),
			    (unsigned long) (sinfo.freeswap / divisor)
			);

			if (dototals) {
				printf("Total: %11lu = (%8lu (used) + %8lu (free))\n",
				    (unsigned long) (totaltotal / divisor),
				    (((long) totaltotal) - ((sinfo.freeram+sinfo.freeswap))) / divisor,
				    (sinfo.freeram+sinfo.freeswap+((unsigned long) cachedbuffer)) / divisor
				);
    }
		}

		if (doloop==0) {
			break;
		}

		usleep(doloop*1000000);
    if (doloop==0) { return(0); } else { usleep(doloop*1000000); printf("\033[%iA",linestoup); }
		printf("\033[%iA",linestoup);
  }

  return(0);
}

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