getrusage(2) System Calls Manual getrusage(2)
getrusage, vtimes - Gets information about resource utilization
Berkeley Compatibility Library (libbsd.a): vtimes() only
struct rusage *r_usage);
[Tru64 UNIX] The following function declaration does not conform to current standards and is supported only for backward compatibility:
struct vtimes *par_vm,
struct vtimes ch_vm);
[Tru64 UNIX] Application developers using the getrusage() function may want to specify an #include statement for <sys/time.h> before the
one for <sys/resource.h> if programs are being developed for multiple platforms. The additional #include statement is not required on Tru64
UNIX systems or by ISO or X/Open standards, but may be required on other vendors' systems that conform to these standards.
Interfaces documented on this reference page conform to industry standards as follows:
Refer to the standards(5) reference page for more information about industry standards and associated tags.
Specifies one of the following: Retrieve information about resources used by the current process. Retrieve information about resources
used by terminated and waited for child processes of the current process. Points to a buffer that will be filled in as described in the
The getrusage() function returns information describing the resources used by the current process or its terminated or waited for child
If the child process is never waited for, for example if the parent has set SA_NOCLDWAIT or has SET SIGCHLD to SIG_IGN, the resource
information for that child process is discarded.
The numbers the ru_inblock and ru_outblock fields of the rusage structure account only for real I/O; data supplied by the caching mechanism
is charged only to the first process to read or write the data.
[Tru64 UNIX] The vtimes() function returns accounting information for the current process and for the terminated child processes of the
current process. Either par_vm or ch_vm or both may be zero, in which case only the information for the pointers which are nonzero are
returned. After the call, each buffer contains information as defined by the contents of the sys/vtimes.h include file.
Upon successful completion, the getrusage(), function returns 0 (zero). Otherwise, the function returns -1 and sets errno to indicate the
The getrusage() function sets errno to the specified values for the following conditions: The who parameter is not a valid value. [Tru64
UNIX] The address specified for r_usage is not valid.
Routines: gettimer(3), time(3), times(3)
Standards: standards(5) delim off