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implement RUSAGE_CHILDREN for getrusage since it's trivial

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--HG--
extra : convert_revision : bc12b3b2e9ee02f42c437cbc20680ea00e19a801
This commit is contained in:
Nathan Binkert
2006-11-16 13:08:29 -08:00
parent 31d829d388
commit 4c2e65c94e
1 changed files with 20 additions and 11 deletions
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31
src/sim/syscall_emul.hh
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@@ -934,17 +934,8 @@ getrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
int who = tc->getSyscallArg(0); // THREAD, SELF, or CHILDREN
TypedBufferArg<typename OS::rusage> rup(tc->getSyscallArg(1));
if (who != OS::TGT_RUSAGE_SELF) {
// don't really handle THREAD or CHILDREN, but just warn and
// plow ahead
warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.",
who);
}
getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec);
rup->ru_utime.tv_sec = htog(rup->ru_utime.tv_sec);
rup->ru_utime.tv_usec = htog(rup->ru_utime.tv_usec);
rup->ru_utime.tv_sec = 0;
rup->ru_utime.tv_usec = 0;
rup->ru_stime.tv_sec = 0;
rup->ru_stime.tv_usec = 0;
rup->ru_maxrss = 0;
@@ -962,6 +953,24 @@ getrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
rup->ru_nvcsw = 0;
rup->ru_nivcsw = 0;
switch (who) {
case OS::TGT_RUSAGE_SELF:
getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec);
rup->ru_utime.tv_sec = htog(rup->ru_utime.tv_sec);
rup->ru_utime.tv_usec = htog(rup->ru_utime.tv_usec);
break;
case OS::TGT_RUSAGE_CHILDREN:
// do nothing. We have no child processes, so they take no time.
break;
default:
// don't really handle THREAD or CHILDREN, but just warn and
// plow ahead
warn("getrusage() only supports RUSAGE_SELF. Parameter %d ignored.",
who);
}
rup.copyOut(tc->getMemPort());
return 0;