#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"