Joshua Haberman
d5bd55cde1
Treat unlinked sub-messages in the MiniTable as unknown
...
This is an observable behavior change in the decoder. After submitting this CL, clients of the decoder can assume that any unlinked sub-messages will be treated as unknown, rather than crashing.
Unlinked sub-messages must never have values present in the message. We can verify this with asserts. Since the values are never set, the encoder should never encounter data for any unlinked sub-message.
```
name old cpu/op new cpu/op delta
BM_ArenaOneAlloc 18.3ns ± 9% 17.9ns ± 2% ~ (p=0.690 n=5+5)
BM_ArenaInitialBlockOneAlloc 6.40ns ± 1% 6.68ns ±10% ~ (p=0.730 n=4+5)
BM_LoadAdsDescriptor_Upb<NoLayout> 5.09ms ± 2% 5.03ms ± 3% ~ (p=0.222 n=5+5)
BM_LoadAdsDescriptor_Upb<WithLayout> 5.45ms ± 3% 5.43ms ± 1% ~ (p=0.905 n=5+4)
BM_LoadAdsDescriptor_Proto2<NoLayout> 10.9ms ± 1% 10.8ms ± 1% -1.09% (p=0.016 n=5+4)
BM_LoadAdsDescriptor_Proto2<WithLayout> 11.3ms ± 9% 11.1ms ± 3% ~ (p=0.841 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Copy> 11.2µs ± 3% 11.3µs ± 3% ~ (p=0.222 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Alias> 10.3µs ± 5% 10.5µs ± 5% ~ (p=0.310 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Copy> 11.4µs ±18% 11.0µs ± 2% ~ (p=1.000 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Alias> 10.5µs ±17% 10.6µs ±19% ~ (p=0.421 n=5+5)
BM_Parse_Proto2<FileDesc, NoArena, Copy> 20.5µs ± 2% 20.2µs ± 2% ~ (p=0.222 n=5+5)
BM_Parse_Proto2<FileDesc, UseArena, Copy> 10.8µs ± 2% 10.9µs ± 4% ~ (p=0.841 n=5+5)
BM_Parse_Proto2<FileDesc, InitBlock, Copy> 10.5µs ± 3% 10.6µs ± 3% ~ (p=0.690 n=5+5)
BM_Parse_Proto2<FileDescSV, InitBlock, Alias> 9.22µs ± 2% 9.23µs ± 3% ~ (p=1.000 n=5+5)
BM_SerializeDescriptor_Proto2 6.05µs ± 3% 5.90µs ± 3% ~ (p=0.222 n=5+5)
BM_SerializeDescriptor_Upb 10.2µs ± 3% 10.6µs ±14% ~ (p=0.841 n=5+5)
name old time/op new time/op delta
BM_ArenaOneAlloc 18.3ns ± 9% 17.9ns ± 2% ~ (p=0.841 n=5+5)
BM_ArenaInitialBlockOneAlloc 6.42ns ± 1% 6.69ns ±10% ~ (p=0.730 n=4+5)
BM_LoadAdsDescriptor_Upb<NoLayout> 5.10ms ± 2% 5.05ms ± 3% ~ (p=0.222 n=5+5)
BM_LoadAdsDescriptor_Upb<WithLayout> 5.47ms ± 3% 5.45ms ± 1% ~ (p=0.905 n=5+4)
BM_LoadAdsDescriptor_Proto2<NoLayout> 10.9ms ± 1% 10.8ms ± 1% -1.11% (p=0.016 n=5+4)
BM_LoadAdsDescriptor_Proto2<WithLayout> 11.4ms ± 9% 11.1ms ± 3% ~ (p=0.841 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Copy> 11.2µs ± 3% 11.3µs ± 3% ~ (p=0.222 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Alias> 10.3µs ± 5% 10.5µs ± 5% ~ (p=0.151 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Copy> 11.5µs ±18% 11.0µs ± 2% ~ (p=1.000 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Alias> 10.5µs ±17% 10.7µs ±19% ~ (p=0.421 n=5+5)
BM_Parse_Proto2<FileDesc, NoArena, Copy> 20.6µs ± 2% 20.3µs ± 2% ~ (p=0.222 n=5+5)
BM_Parse_Proto2<FileDesc, UseArena, Copy> 10.9µs ± 2% 10.9µs ± 4% ~ (p=0.841 n=5+5)
BM_Parse_Proto2<FileDesc, InitBlock, Copy> 10.6µs ± 3% 10.6µs ± 3% ~ (p=0.690 n=5+5)
BM_Parse_Proto2<FileDescSV, InitBlock, Alias> 9.24µs ± 2% 9.25µs ± 3% ~ (p=1.000 n=5+5)
BM_SerializeDescriptor_Proto2 6.07µs ± 3% 5.91µs ± 3% ~ (p=0.222 n=5+5)
BM_SerializeDescriptor_Upb 10.3µs ± 3% 10.6µs ±14% ~ (p=0.841 n=5+5)
name old INSTRUCTIONS/op new INSTRUCTIONS/op delta
BM_ArenaOneAlloc 201 ± 0% 201 ± 0% ~ (p=0.841 n=5+5)
BM_ArenaInitialBlockOneAlloc 69.0 ± 0% 69.0 ± 0% ~ (all samples are equal)
BM_LoadAdsDescriptor_Upb<NoLayout> 33.9M ± 0% 34.1M ± 0% +0.66% (p=0.008 n=5+5)
BM_LoadAdsDescriptor_Upb<WithLayout> 35.6M ± 0% 35.8M ± 0% +0.64% (p=0.008 n=5+5)
BM_LoadAdsDescriptor_Proto2<NoLayout> 70.8M ± 0% 70.8M ± 0% ~ (p=0.548 n=5+5)
BM_LoadAdsDescriptor_Proto2<WithLayout> 71.6M ± 0% 71.6M ± 0% ~ (p=0.151 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Copy> 137k ± 0% 141k ± 0% +2.87% (p=0.008 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Alias> 125k ± 0% 128k ± 0% +2.83% (p=0.008 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Copy> 135k ± 0% 139k ± 0% +2.89% (p=0.008 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Alias> 124k ± 0% 127k ± 0% +2.85% (p=0.016 n=5+4)
BM_Parse_Proto2<FileDesc, NoArena, Copy> 201k ± 0% 201k ± 0% ~ (p=0.222 n=5+5)
BM_Parse_Proto2<FileDesc, UseArena, Copy> 107k ± 0% 107k ± 0% ~ (p=1.000 n=5+5)
BM_Parse_Proto2<FileDesc, InitBlock, Copy> 105k ± 0% 105k ± 0% ~ (p=0.286 n=5+4)
BM_Parse_Proto2<FileDescSV, InitBlock, Alias> 86.5k ± 0% 86.5k ± 0% ~ (p=0.222 n=5+5)
BM_SerializeDescriptor_Proto2 60.3k ± 0% 60.3k ± 0% ~ (p=0.071 n=5+5)
BM_SerializeDescriptor_Upb 111k ± 0% 111k ± 0% ~ (p=0.841 n=5+5)
name old CYCLES/op new CYCLES/op delta
BM_ArenaOneAlloc 60.0 ± 7% 58.8 ± 0% -2.15% (p=0.016 n=5+5)
BM_ArenaInitialBlockOneAlloc 21.0 ± 0% 21.0 ± 0% ~ (p=1.000 n=5+5)
BM_LoadAdsDescriptor_Upb<NoLayout> 16.9M ± 0% 16.9M ± 0% ~ (p=0.056 n=5+5)
BM_LoadAdsDescriptor_Upb<WithLayout> 17.9M ± 1% 18.0M ± 1% ~ (p=0.095 n=5+5)
BM_LoadAdsDescriptor_Proto2<NoLayout> 35.9M ± 1% 35.8M ± 1% ~ (p=0.421 n=5+5)
BM_LoadAdsDescriptor_Proto2<WithLayout> 36.5M ± 0% 36.5M ± 0% ~ (p=0.841 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Copy> 37.2k ± 0% 37.3k ± 0% ~ (p=0.222 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Alias> 34.1k ± 0% 34.7k ± 0% +1.66% (p=0.008 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Copy> 36.4k ± 0% 36.7k ± 0% +0.83% (p=0.008 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Alias> 33.3k ± 1% 34.1k ± 1% +2.39% (p=0.008 n=5+5)
BM_Parse_Proto2<FileDesc, NoArena, Copy> 68.1k ± 1% 68.0k ± 1% ~ (p=0.421 n=5+5)
BM_Parse_Proto2<FileDesc, UseArena, Copy> 36.0k ± 1% 36.1k ± 1% ~ (p=0.841 n=5+5)
BM_Parse_Proto2<FileDesc, InitBlock, Copy> 35.3k ± 1% 35.5k ± 1% ~ (p=0.151 n=5+5)
BM_Parse_Proto2<FileDescSV, InitBlock, Alias> 30.7k ± 0% 30.9k ± 1% ~ (p=0.151 n=5+5)
BM_SerializeDescriptor_Proto2 20.3k ± 2% 19.7k ± 3% ~ (p=0.151 n=5+5)
BM_SerializeDescriptor_Upb 33.6k ± 0% 33.7k ± 2% ~ (p=1.000 n=5+5)
name old allocs/op new allocs/op delta
BM_ArenaOneAlloc 1.19 ± 0% 1.19 ± 0% ~ (all samples are equal)
BM_ArenaInitialBlockOneAlloc 0.19 ± 0% 0.19 ± 0% ~ (all samples are equal)
BM_LoadAdsDescriptor_Upb<NoLayout> 6.00k ± 0% 6.00k ± 0% ~ (all samples are equal)
BM_LoadAdsDescriptor_Upb<WithLayout> 5.99k ± 0% 5.99k ± 0% ~ (all samples are equal)
BM_LoadAdsDescriptor_Proto2<NoLayout> 77.8k ± 0% 77.8k ± 0% ~ (all samples are equal)
BM_LoadAdsDescriptor_Proto2<WithLayout> 79.0k ± 0% 79.0k ± 0% ~ (all samples are equal)
BM_Parse_Upb_FileDesc<UseArena, Copy> 7.19 ± 0% 7.19 ± 0% ~ (all samples are equal)
BM_Parse_Upb_FileDesc<UseArena, Alias> 7.19 ± 0% 7.19 ± 0% ~ (all samples are equal)
BM_Parse_Upb_FileDesc<InitBlock, Copy> 0.19 ± 0% 0.19 ± 0% ~ (all samples are equal)
BM_Parse_Upb_FileDesc<InitBlock, Alias> 0.19 ± 0% 0.19 ± 0% ~ (all samples are equal)
BM_Parse_Proto2<FileDesc, NoArena, Copy> 765 ± 0% 765 ± 0% ~ (all samples are equal)
BM_Parse_Proto2<FileDesc, UseArena, Copy> 10.2 ± 0% 10.2 ± 0% ~ (all samples are equal)
BM_Parse_Proto2<FileDesc, InitBlock, Copy> 1.19 ± 0% 1.19 ± 0% ~ (all samples are equal)
BM_Parse_Proto2<FileDescSV, InitBlock, Alias> 1.19 ± 0% 1.19 ± 0% ~ (all samples are equal)
BM_SerializeDescriptor_Proto2 0.19 ± 0% 0.19 ± 0% ~ (all samples are equal)
BM_SerializeDescriptor_Upb 0.19 ± 0% 0.19 ± 0% ~ (all samples are equal)
name old peak-mem(Bytes)/op new peak-mem(Bytes)/op delta
BM_ArenaOneAlloc 344 ± 0% 344 ± 0% ~ (all samples are equal)
BM_ArenaInitialBlockOneAlloc 112 ± 0% 112 ± 0% ~ (all samples are equal)
BM_LoadAdsDescriptor_Upb<NoLayout> 9.64M ± 0% 9.64M ± 0% ~ (all samples are equal)
BM_LoadAdsDescriptor_Upb<WithLayout> 9.70M ± 0% 9.70M ± 0% ~ (all samples are equal)
BM_LoadAdsDescriptor_Proto2<NoLayout> 6.38M ± 0% 6.38M ± 0% ~ (all samples are equal)
BM_LoadAdsDescriptor_Proto2<WithLayout> 6.44M ± 0% 6.44M ± 0% ~ (all samples are equal)
BM_Parse_Upb_FileDesc<UseArena, Copy> 36.5k ± 0% 36.5k ± 0% ~ (all samples are equal)
BM_Parse_Upb_FileDesc<UseArena, Alias> 36.5k ± 0% 36.5k ± 0% ~ (all samples are equal)
BM_Parse_Upb_FileDesc<InitBlock, Copy> 112 ± 0% 112 ± 0% ~ (all samples are equal)
BM_Parse_Upb_FileDesc<InitBlock, Alias> 112 ± 0% 112 ± 0% ~ (all samples are equal)
BM_Parse_Proto2<FileDesc, NoArena, Copy> 35.8k ± 0% 35.8k ± 0% ~ (all samples are equal)
BM_Parse_Proto2<FileDesc, UseArena, Copy> 40.8k ± 0% 40.8k ± 0% ~ (all samples are equal)
BM_Parse_Proto2<FileDesc, InitBlock, Copy> 112 ± 0% 112 ± 0% ~ (all samples are equal)
BM_Parse_Proto2<FileDescSV, InitBlock, Alias> 112 ± 0% 112 ± 0% ~ (all samples are equal)
BM_SerializeDescriptor_Proto2 112 ± 0% 112 ± 0% ~ (all samples are equal)
BM_SerializeDescriptor_Upb 112 ± 0% 112 ± 0% ~ (all samples are equal)
name old speed new speed delta
BM_LoadAdsDescriptor_Upb<NoLayout> 147MB/s ± 2% 148MB/s ± 3% ~ (p=0.222 n=5+5)
BM_LoadAdsDescriptor_Upb<WithLayout> 137MB/s ± 3% 137MB/s ± 1% ~ (p=0.905 n=5+4)
BM_LoadAdsDescriptor_Proto2<NoLayout> 68.6MB/s ± 1% 69.3MB/s ± 1% +1.10% (p=0.016 n=5+4)
BM_LoadAdsDescriptor_Proto2<WithLayout> 66.0MB/s ± 9% 67.4MB/s ± 3% ~ (p=0.841 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Copy> 675MB/s ± 3% 667MB/s ± 3% ~ (p=0.222 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Alias> 730MB/s ± 5% 718MB/s ± 5% ~ (p=0.310 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Copy> 663MB/s ±16% 685MB/s ± 2% ~ (p=1.000 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Alias> 723MB/s ±15% 712MB/s ±16% ~ (p=0.421 n=5+5)
BM_Parse_Proto2<FileDesc, NoArena, Copy> 367MB/s ± 2% 372MB/s ± 2% ~ (p=0.222 n=5+5)
BM_Parse_Proto2<FileDesc, UseArena, Copy> 694MB/s ± 2% 691MB/s ± 4% ~ (p=0.841 n=5+5)
BM_Parse_Proto2<FileDesc, InitBlock, Copy> 714MB/s ± 3% 709MB/s ± 3% ~ (p=0.690 n=5+5)
BM_Parse_Proto2<FileDescSV, InitBlock, Alias> 816MB/s ± 2% 816MB/s ± 3% ~ (p=1.000 n=5+5)
BM_SerializeDescriptor_Proto2 1.24GB/s ± 3% 1.28GB/s ± 3% ~ (p=0.222 n=5+5)
BM_SerializeDescriptor_Upb 734MB/s ± 3% 713MB/s ±13% ~ (p=0.841 n=5+5)
```
PiperOrigin-RevId: 477770562
2 years ago