36 lines
1009 B
C
36 lines
1009 B
C
#include <sys/resource.h>
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#include <string.h>
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#include <errno.h>
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#include "syscall.h"
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int getrusage(int who, struct rusage *ru)
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{
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int r;
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#ifdef SYS_getrusage_time64
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long long kru64[18];
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r = __syscall(SYS_getrusage_time64, who, kru64);
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if (!r) {
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ru->ru_utime = (struct timeval)
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{ .tv_sec = kru64[0], .tv_usec = kru64[1] };
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ru->ru_stime = (struct timeval)
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{ .tv_sec = kru64[2], .tv_usec = kru64[3] };
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char *slots = (char *)&ru->ru_maxrss;
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for (int i=0; i<14; i++)
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*(long *)(slots + i*sizeof(long)) = kru64[4+i];
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}
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if (SYS_getrusage_time64 == SYS_getrusage || r != -ENOSYS)
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return __syscall_ret(r);
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#endif
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char *dest = (char *)&ru->ru_maxrss - 4*sizeof(long);
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r = __syscall(SYS_getrusage, who, dest);
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if (!r && sizeof(time_t) > sizeof(long)) {
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long kru[4];
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memcpy(kru, dest, 4*sizeof(long));
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ru->ru_utime = (struct timeval)
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{ .tv_sec = kru[0], .tv_usec = kru[1] };
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ru->ru_stime = (struct timeval)
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{ .tv_sec = kru[2], .tv_usec = kru[3] };
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}
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return __syscall_ret(r);
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}
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