C++Guns – RoboBlog

08.06.2012

Linux RAM Verbrauch

Filed under: Allgemein — Tags: , — Thomas @ 07:06

Systemweit:
http://stackoverflow.com/questions/349889/how-do-you-determine-the-amount-of-linux-system-ram-in-c/350046#350046

   #include < sys/sysinfo.h >

   int sysinfo(struct sysinfo *info);

   struct sysinfo {
       long uptime;             /* Seconds since boot */
       unsigned long loads[3];  /* 1, 5, and 15 minute load averages */
       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 totalswap; /* Total swap space size */
       unsigned long freeswap;  /* swap space still available */
       unsigned short procs;    /* Number of current processes */
       unsigned long totalhigh; /* Total high memory size */
       unsigned long freehigh;  /* Available high memory size */
       unsigned int mem_unit;   /* Memory unit size in bytes */
       char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding for libc5 */
   };
 and the sizes are given as multiples of mem_unit bytes.

Prozess spezifisch:
http://stackoverflow.com/questions/669438/how-to-get-memory-usage-at-run-time-in-c/669476#669476

// getrusage.c
#include < stdio.h >
#include < proc/readproc.h >

int main() {
  struct proc_t usage;
  look_up_our_self(&usage);
  printf("usage: %lu\n", usage.vsize);
}

Compile with "gcc -o getrusage getrusage.c -lproc"

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