[roll] Roll fuchsia [log][rust] Stop using nom for decoding log records Instead leverage zerocopy in more places and simplify the code. Brings nice performance improvements in Archivist and log decoder benchmarks. Perfcompare at patchset #4: X64: https://logs.chromium.org/logs/fuchsia/buildbucket/cr-buildbucket/8730711614618654833/+/u/compare_perf_test_results_without_and_with_CL/stdout ``` fuchsia.archivist: Logging/SharedBuffer/Fill/100 regressed 1.051-1.104 7827 +/- 32 ns 8433 +/- 174 ns fuchsia.archivist: Logging/SharedBuffer/Fill/16K regressed 1.053-1.085 1285082 +/- 15889 ns 1373796 +/- 3456 ns fuchsia.archivist: Logging/SharedBuffer/Iterate/size=16K/writers=0/per_second=1 improved 0.814-0.826 3806458 +/- 18371 ns 3120808 +/- 7557 ns fuchsia.archivist: Logging/SharedBuffer/Iterate/size=16K/writers=1/per_second=50 improved 0.818-0.826 3801755 +/- 11564 ns 3125460 +/- 6572 ns fuchsia.archivist: Logging/SharedBuffer/Iterate/size=16K/writers=1/per_second=500 improved 0.819-0.833 3793066 +/- 16359 ns 3132753 +/- 14441 ns fuchsia.archivist: Logging/SharedBuffer/Iterate/size=16K/writers=3/per_second=500 improved 0.817-0.832 3805945 +/- 19994 ns 3138453 +/- 12231 ns fuchsia.diagnostics_log_rust.decoding: Decoder/Argument/Boolean improved 0.614-0.653 79.08 +/- 0.86 ns 50.1 +/- 1.0 ns fuchsia.diagnostics_log_rust.decoding: Decoder/Argument/Floating improved 0.450-0.520 105.0 +/- 5.7 ns 50.75 +/- 0.94 ns fuchsia.diagnostics_log_rust.decoding: Decoder/Argument/SignedInt improved 0.453-0.506 106.1 +/- 4.1 ns 50.74 +/- 0.86 ns fuchsia.diagnostics_log_rust.decoding: Decoder/Argument/Text/1024 improved 0.862-0.899 121.1 +/- 1.3 ns 106.6 +/- 1.1 ns fuchsia.diagnostics_log_rust.decoding: Decoder/Argument/Text/128 improved 0.672-0.704 97.8 +/- 1.7 ns 67.20 +/- 0.42 ns fuchsia.diagnostics_log_rust.decoding: Decoder/Argument/Text/16 improved 0.678-0.696 92.82 +/- 0.82 ns 63.76 +/- 0.31 ns fuchsia.diagnostics_log_rust.decoding: Decoder/Argument/Text/256 improved 0.653-0.746 101.9 +/- 5.2 ns 71.0 +/- 1.1 ns fuchsia.diagnostics_log_rust.decoding: Decoder/Argument/Text/32000 improved 0.878-0.909 1321 +/- 18 ns 1180.0 +/- 4.3 ns fuchsia.diagnostics_log_rust.decoding: Decoder/Argument/Text/512 improved 0.791-0.857 107.3 +/- 1.0 ns 88.4 +/- 2.7 ns fuchsia.diagnostics_log_rust.decoding: Decoder/Argument/UnsignedInt improved 0.462-0.485 105.6 +/- 1.6 ns 49.96 +/- 0.46 ns fuchsia.diagnostics_log_rust.decoding: Decoder/ReadEvent/AllArguments improved 0.619-0.634 1451 +/- 10 ns 909.2 +/- 4.4 ns fuchsia.diagnostics_log_rust.decoding: Decoder/ReadEvent/MessageAsString improved 0.612-0.680 790 +/- 10 ns 510 +/- 20 ns fuchsia.diagnostics_log_rust.decoding: Decoder/ReadEvent/MessageWithSomeArguments improved 0.599-0.624 1060 +/- 18 ns 647.9 +/- 1.8 ns fuchsia.diagnostics_log_rust.decoding: Decoder/ReadEvent/NoArguments improved 0.582-0.590 785.4 +/- 4.0 ns 460.38 +/- 0.64 ns ``` VIM3: https://logs.chromium.org/logs/fuchsia/buildbucket/cr-buildbucket/8730711614618654817/+/u/compare_perf_test_results_without_and_with_CL/stdout ``` fuchsia.archivist: Logging/SharedBuffer/Iterate/size=16K/writers=1/per_second=500 improved 0.809-0.818 8712122 +/- 12274 ns 7084648 +/- 28196 ns fuchsia.archivist: Logging/SharedBuffer/Iterate/size=16K/writers=3/per_second=500 improved 0.817-0.823 8761744 +/- 8902 ns 7185597 +/- 18674 ns fuchsia.diagnostics_log_rust.decoding: Decoder/Argument/Boolean improved 0.562-0.582 193.9 +/- 1.1 ns 111.0 +/- 1.3 ns fuchsia.diagnostics_log_rust.decoding: Decoder/Argument/Floating improved 0.436-0.444 253.5 +/- 1.5 ns 111.62 +/- 0.36 ns fuchsia.diagnostics_log_rust.decoding: Decoder/Argument/SignedInt improved 0.441-0.445 251.69 +/- 0.86 ns 111.482 +/- 0.046 ns fuchsia.diagnostics_log_rust.decoding: Decoder/Argument/Text/512 improved 0.765-0.773 288.3 +/- 1.2 ns 221.60 +/- 0.24 ns ``` Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1160813 Original-Revision: 45abc86805fde8387dcdf94b24ad8fa446bd636b GitOrigin-RevId: cbd688f9c71f39de1e24833b60af4da4bbbe9ef5 Change-Id: Ie2fb862dcb676f43832063be31f0a69adee20f07
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