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Sprite 1984 - 1993
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Sprite 1984 - 1993.iso
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unixSyscall
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getrusage.c
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1988-06-19
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/*
* getrusage.c --
*
* Procedure to map from Unix getrusage system call to Sprite.
*
* Copyright (C) 1986 Regents of the University of California
* All rights reserved.
*/
#ifndef lint
static char rcsid[] = "$Header: getrusage.c,v 1.1 88/06/19 14:31:28 ouster Exp $ SPRITE (Berkeley)";
#endif not lint
#include "sprite.h"
#include "proc.h"
#include <sys/time.h>
#include <sys/resource.h>
#include "compatInt.h"
/*
* Convert from a Sprite Time to a Unix struct timeval. The structures
* really are compatible, but C won't permit a cast from one to the other,
* so use a macro instead.
*/
#define COPYTIME(TO,FROM) { \
(TO).tv_sec = (FROM).seconds; \
(TO).tv_usec = (FROM).microseconds; \
}
/*
*----------------------------------------------------------------------
*
* getrusage --
*
* Procedure to map from Unix getrusage system call to Sprite
* Proc_GetResUsage. Note that getrusage normally returns more
* information than Proc_GetResUsage, so many fields must be set
* to zero.
*
* Results:
* UNIX_ERROR is returned upon error, with the actual error code
* stored in errno. Upon success, UNIX_SUCCESS is returned and the
* rusage struct is filled with the available information.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
getrusage(who, rusage)
int who;
struct rusage *rusage;
{
ReturnStatus status; /* result returned by Proc_GetResUsage */
Proc_ResUsage spriteUsage; /* sprite resource usage buffer */
status = Proc_GetResUsage(PROC_MY_PID, &spriteUsage);
if (status != SUCCESS) {
errno = Compat_MapCode(status);
return(UNIX_ERROR);
} else {
if (who == RUSAGE_SELF) {
COPYTIME(rusage->ru_utime, spriteUsage.userCpuUsage);
COPYTIME(rusage->ru_stime, spriteUsage.kernelCpuUsage);
} else {
COPYTIME(rusage->ru_utime, spriteUsage.childUserCpuUsage);
COPYTIME(rusage->ru_stime, spriteUsage.childKernelCpuUsage);
}
rusage->ru_maxrss = 0;
rusage->ru_ixrss = 0; /* integral shared memory size */
rusage->ru_idrss = 0; /* integral unshared data size */
rusage->ru_isrss = 0; /* integral unshared stack size */
rusage->ru_minflt = 0; /* page reclaims */
rusage->ru_majflt = 0; /* page faults */
rusage->ru_nswap = 0; /* swaps */
rusage->ru_inblock = 0; /* block input operations */
rusage->ru_oublock = 0; /* block output operations */
rusage->ru_msgsnd = 0; /* messages sent */
rusage->ru_msgrcv = 0; /* messages received */
rusage->ru_nsignals = 0; /* signals received */
rusage->ru_nvcsw =
spriteUsage.numWaitEvents; /* voluntary context switches */
rusage->ru_nivcsw =
spriteUsage.numQuantumEnds; /* involuntary context switches */
return(UNIX_SUCCESS);
}
}