64f10ee644
Implement getrusage. These fields of struct rusage are not supported and always set to zero at this time 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_nvcsw; /* voluntary context switches */ long ru_nivcsw; /* involuntary context switches */ test75.c is the unit test for this new function Change-Id: I3f1eb69de1fce90d087d76773b09021fc6106539
33 lines
659 B
C
33 lines
659 B
C
#include <sys/cdefs.h>
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#include "namespace.h"
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#include <lib.h>
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#include <unistd.h>
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#include <sys/resource.h>
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int getrusage(int who, struct rusage *r_usage)
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{
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int rc;
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message m;
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m.RU_WHO = who;
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m.RU_RUSAGE_ADDR = r_usage;
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if (r_usage == NULL) {
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errno = EFAULT;
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return -1;
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}
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if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) {
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errno = EINVAL;
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return -1;
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}
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memset(r_usage, 0, sizeof(struct rusage));
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if ((rc = _syscall(PM_PROC_NR, GETRUSAGE, &m)) < 0)
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return rc;
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m.RU_RUSAGE_ADDR = r_usage;
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if ((rc = _syscall(VFS_PROC_NR, GETRUSAGE, &m)) < 0)
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return rc;
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m.RU_RUSAGE_ADDR = r_usage;
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return _syscall(VM_PROC_NR, VM_GETRUSAGE, &m);
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}
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