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#include <sys/time.h> #include <sys/resource.h> int getrusage(int who, struct rusage *rusage); |
This function returns information about the running process. The
structure struct rusage is defined on <sys/resource.h> as
follows:
struct rusage {
struct timeval ru_utime; /* user time used */
struct timeval ru_stime; /* system time used */
long ru_maxrss; /* integral max resident set size */
long ru_ixrss; /* integral shared text 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 context switches */
};
|
Currently, the only field that is computed is ru_utime. It is
computed as the total elapsed time used by the calling program. The
remainder of the fields are set to zero.
The who parameter must be RUSAGE_SELF or
RUSAGE_CHILDREN.
Zero on success, nonzero on failure.
| ANSI/ISO C | No |
| POSIX | No |
struct rusage r; getrusage(RUSAGE_SELF, &r); |