more unix stats

[erg]

getrusage, getrlimit, setrlimit

/usr/include/linux/resource.h

#define RUSAGE_SELF 0
#define RUSAGE_CHILDREN (-1)
#define RUSAGE_BOTH (-2) /* sys_wait4() uses this */
#define RUSAGE_THREAD 1 /* only the calling thread */

struct rusage {
 struct timeval ru_utime; /* user time used */
 struct timeval ru_stime; /* system time used */
 long ru_maxrss; /* maximum resident set size */
 long ru_ixrss; /* integral shared memory size */
 long ru_idrss; /* integral unshared data size */
 long ru_isrss; /* integral unshared stack size */
 long ru_minflt; /* page reclaims */
 long ru_majflt; /* page faults */
 long ru_nswap; /* swaps */
 long ru_inblock; /* block input operations */
 long ru_oublock; /* block output operations */
 long ru_msgsnd; /* messages sent */
 long ru_msgrcv; /* messages received */
 long ru_nsignals; /* signals received */
 long ru_nvcsw; /* voluntary context switches */
 long ru_nivcsw; /* involuntary " */
};

struct rlimit {
 unsigned long rlim_cur;
 unsigned long rlim_max;
};

[erg]

macosx utmpx is broken.