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31 lines
642 B
C
31 lines
642 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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int
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vmsize ()
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{
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int pid, fd, size, i, mem;
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char filename[17], buf[256], *ptr, *end;
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pid = getpid ();
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snprintf (filename, 17, "/proc/%d/stat", pid);
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fd = open (filename, O_RDONLY);
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if (fd == -1) {
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fprintf (stderr, "warning: could not open %s\n", filename);
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return -1;
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}
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size = read (fd, buf, 240);
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if (size == -1)
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return -1;
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ptr = buf;
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for (i = 0; i < 22; i++)
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ptr = (char *) strchr (ptr, ' ') + 1;
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end = (char *) strchr (ptr, ' ');
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*end = 0;
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sscanf (ptr, "%d", &mem);
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close (fd);
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return mem;
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}
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