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Add Equals method to compare syserror and unix.Errno errors to linuxerr errors.
This will facilitate removal of syserror definitions in a followup, and
finding needed conversions from unix.Errno to linuxerr.
PiperOrigin-RevId: 380909667
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Change the p9 server to use *errors.Error defined in pkg linuxerr. Done
separate from the client so that we ensure different p9 server/client versions
work with each other.
PiperOrigin-RevId: 380084491
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Move Error struct to pkg/errors package for use in multiple places.
Move linuxerr static definitions under pkg/errors/linuxerr.
Add a lookup list for quick lookup of *errors.Error by errno. This is useful
when converting syserror errors and unix.Errno/syscall.Errrno values to
*errors.Error.
Update benchmarks routines to include conversions.
The below benchmarks show *errors.Error usage to be comparable to using
unix.Errno.
BenchmarkAssignUnix
BenchmarkAssignUnix-32 787875022 1.284 ns/op
BenchmarkAssignLinuxerr
BenchmarkAssignLinuxerr-32 1000000000 1.209 ns/op
BenchmarkAssignSyserror
BenchmarkAssignSyserror-32 759269229 1.429 ns/op
BenchmarkCompareUnix
BenchmarkCompareUnix-32 1000000000 1.310 ns/op
BenchmarkCompareLinuxerr
BenchmarkCompareLinuxerr-32 1000000000 1.241 ns/op
BenchmarkCompareSyserror
BenchmarkCompareSyserror-32 147196165 8.248 ns/op
BenchmarkSwitchUnix
BenchmarkSwitchUnix-32 373233556 3.664 ns/op
BenchmarkSwitchLinuxerr
BenchmarkSwitchLinuxerr-32 476323929 3.294 ns/op
BenchmarkSwitchSyserror
BenchmarkSwitchSyserror-32 39293408 29.62 ns/op
BenchmarkReturnUnix
BenchmarkReturnUnix-32 1000000000 0.5042 ns/op
BenchmarkReturnLinuxerr
BenchmarkReturnLinuxerr-32 1000000000 0.8152 ns/op
BenchmarkConvertUnixLinuxerr
BenchmarkConvertUnixLinuxerr-32 739948875 1.547 ns/op
BenchmarkConvertUnixLinuxerrZero
BenchmarkConvertUnixLinuxerrZero-32 977733974 1.489 ns/op
PiperOrigin-RevId: 379806801
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