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| author | nsfisis <nsfisis@gmail.com> | 2026-08-16 16:24:38 +0900 |
|---|---|---|
| committer | nsfisis <nsfisis@gmail.com> | 2026-08-16 17:34:46 +0900 |
| commit | 224d3e8262ed6156ea3374fe91dfb5b66d6f0d3a (patch) | |
| tree | 5e21148a1192f9f24ebbd2b007f2b9a8a8f8cc37 /Cargo.lock | |
| parent | 494f79d0caf614325408d82d5c7a58f9e4396590 (diff) | |
| download | php-shirabe-224d3e8262ed6156ea3374fe91dfb5b66d6f0d3a.tar.gz php-shirabe-224d3e8262ed6156ea3374fe91dfb5b66d6f0d3a.tar.zst php-shirabe-224d3e8262ed6156ea3374fe91dfb5b66d6f0d3a.zip | |
perf(php-shim): scan the phar stub token with memchr
The stub token search compared every 18-byte window of the file case
insensitively. The token starts with a byte that ASCII case folding
leaves alone, so memchr can pick out the candidate offsets and leave
only those to the case-insensitive compare.
Over the 35 MB executable, finding the token in the embedded bundle
stub drops from 2.3 ms to 0.1 ms, and a scan that finds nothing drops
from 24 ms to 3.6 ms.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Diffstat (limited to 'Cargo.lock')
| -rw-r--r-- | Cargo.lock | 5 |
1 files changed, 3 insertions, 2 deletions
@@ -1235,9 +1235,9 @@ checksum = "490cc448043f947bae3cbee9c203358d62dbee0db12107a74be5c30ccfd09771" [[package]] name = "memchr" -version = "2.8.0" +version = "2.8.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "f8ca58f447f06ed17d5fc4043ce1b10dd205e060fb3ce5b979b8ed8e59ff3f79" +checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98" [[package]] name = "micromap" @@ -2185,6 +2185,7 @@ dependencies = [ "flate2", "indexmap", "md5", + "memchr", "nix", "regex", "regex-macro", |