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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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static char showtitle = 1;
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struct Filemap
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{
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char name[300];
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int size;
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int rss;
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int shared_clean;
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int shared_dirty;
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int private_clean;
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int private_dirty;
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enum {
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PRIVATE,
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SHARED
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} type;
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char readable;
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char writable;
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char executable;
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int inode;
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struct {
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unsigned char major;
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unsigned char minor;
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} device;
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};
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struct Totals
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{
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int size;
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int rss;
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int shared_clean;
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int shared_dirty;
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int private_clean;
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int private_dirty;
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char cmd[200];
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};
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static int readkb(const char *field, FILE *stream)
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{
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int kb;
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int res;
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char line[200];
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strcpy(line, field);
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strcat(line, " %i kB\n");
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res = fscanf(stream, line, &kb);
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if (res != 1)
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return -1;
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return kb;
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}
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static int readsize(FILE *stream)
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{
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return readkb("Size:", stream);
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}
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static int readrss(FILE *stream)
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{
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return readkb("Rss:", stream);
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}
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static int readshared_clean(FILE *stream)
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{
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return readkb("Shared_Clean:", stream);
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}
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static int readshared_dirty(FILE *stream)
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{
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return readkb("Shared_Dirty:", stream);
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}
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static int readprivate_clean(FILE *stream)
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{
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return readkb("Private_Clean:", stream);
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}
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static int readprivate_dirty(FILE *stream)
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{
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return readkb("Private_Dirty:", stream);
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}
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static int readfilemap(FILE *stream, struct Filemap *map)
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{
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int res;
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char type;
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unsigned int major;
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unsigned int minor;
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res = fscanf(stream, "%*x-%*x %c%c%c%c %*x %x:%x %i",
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&map->readable,
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&map->writable,
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&map->executable,
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&type,
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&major,
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&minor,
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&map->inode);
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if (res != 7)
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return -1;
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fgets(map->name, 300, stream);
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map->device.major = major;
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map->device.minor = minor;
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if (type == 's')
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map->type = PRIVATE;
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else
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map->type = SHARED;
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if (map->readable == '-')
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map->readable = 0;
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if (map->writable == '-')
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map->writable = 0;
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if (map->executable == '-')
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map->executable = 0;
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map->size = readsize(stream);
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if (map->size == -1)
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return -2;
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map->rss = readrss(stream);
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if (map->rss == -1)
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return -2;
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map->shared_clean = readshared_clean(stream);
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if (map->shared_clean == -1)
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return -2;
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map->shared_dirty = readshared_dirty(stream);
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if (map->shared_dirty == -1)
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return -2;
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map->private_clean = readprivate_clean(stream);
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if (map->private_clean == -1)
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return -2;
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map->private_dirty = readprivate_dirty(stream);
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if (map->private_dirty == -1)
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return -2;
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return 0;
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}
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static int readsmap(const int pid, struct Totals *totals)
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{
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FILE *stream;
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char filename[100];
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snprintf(filename, 100, "/proc/%i/smaps", pid);
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stream = fopen(filename, "r");
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if (stream == 0)
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return -1;
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totals->size = 0;
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totals->rss = 0;
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totals->shared_clean = 0;
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totals->shared_dirty = 0;
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totals->private_clean = 0;
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totals->private_dirty = 0;
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while(!feof(stream))
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{
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struct Filemap map;
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int res;
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res = readfilemap(stream, &map);
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if (res == -1)
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break;
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if (res == -2)
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{
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fprintf(stderr, "ERROR READING %s\n", filename);
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break;
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}
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/*printf("Map: %s\n", map.name);*/
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totals->size = totals->size + map.size;
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totals->rss = totals->rss + map.rss;
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totals->shared_clean = totals->shared_clean + map.shared_clean;
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totals->shared_dirty = totals->shared_dirty + map.shared_dirty;
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totals->private_clean = totals->private_clean
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+ map.private_clean;
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totals->private_dirty = totals->private_dirty
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+ map.private_dirty;
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}
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fclose(stream);
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/* Read the cmd */
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totals->cmd[0] = '\0';
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snprintf(filename, 100, "/proc/%i/cmdline", pid);
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stream = fopen(filename, "r");
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fgets(totals->cmd, 200, stream);
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fclose(stream);
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return 0;
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}
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static void showtotals(const int pid, const struct Totals *totals)
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{
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if (showtitle)
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printf("PID\tSIZE\tRSS\tS_CLN\tS_DTY\tP_CLN\tP_DTY\tCMD\n");
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printf("%i\t%i\t%i\t%i\t%i\t%i\t%i\t%s\n",
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pid,
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totals->size,
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totals->rss,
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totals->shared_clean,
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totals->shared_dirty,
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totals->private_clean,
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totals->private_dirty,
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totals->cmd);
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}
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static void showhelp(const char *progname)
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{
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fprintf(stderr,"usage: %s <pid>\n", progname);
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}
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int main(int argc, char *argv[])
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{
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int pid;
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struct Totals t;
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int res;
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if (argc < 2)
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{
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showhelp(argv[0]);
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return 1;
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}
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if (argc == 2)
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pid = atoi(argv[1]);
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else
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{
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if (argv[1][1] == 'q')
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showtitle = 0;
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pid = atoi(argv[2]);
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}
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res = readsmap(pid, &t);
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if (res == -1)
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return -1;
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showtotals(pid, &t);
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return 0;
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}
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