Initial commit

Author: gfabrizi

.gitignore

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+/rust/libonebrc.so
+/rust/onebrc/target
+.idea
+measurements.txt

README.md

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+## Enable FFI in PHP 8.3 (Arch Linux)
+```sh
+sudo sed -i 's/;extension=ffi/extension=ffi/' /etc/php/php.ini
+sudo sed -i 's/;zend_extension=opcache/zend_extension=opcache/' /etc/php/php.ini
+
+echo "ffi.enable=preload" | sudo tee -a /etc/php/conf.d/ffi.ini
+
+echo "opcache.enable=1" | sudo tee -a /etc/php/conf.d/opcache.ini
+echo "opcache.enable_cli=1" | sudo tee -a /etc/php/conf.d/opcache.ini
+echo "opcache.jit=on" | sudo tee -a /etc/php/conf.d/opcache.ini
+```
+
+## Compiling Rust library
+From the root directory, run:  
+```sh
+cd rust/onebrc && cargo build --release && rm -f ../libonebrc.so && mv target/release/libonebrc.so ../ && strip --strip-unneeded ../libonebrc.so && cd ../../
+```
+
+## Running
+Generate `rust/measurements.txt` file from the original 1brc tool.  
+Then from the root directory, run:  
+
+```sh
+php app/index.php
+```

app/index.php

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+<?php
+
+require_once "libonebrc.php";
+$libOneBrc = new LibOneBrc();
+
+$filename = "./rust/measurements.txt";
+
+$result = json_decode($libOneBrc->run($filename));
+
+echo "{" . PHP_EOL;
+$isFirstRow = true;
+foreach ($result as $key => $value) {
+    if (!$isFirstRow) {
+        echo "," . PHP_EOL;
+    } else {
+        $isFirstRow = false;
+    }
+
+    echo "\t" . $value->city . '=' . $value->max / 10 . '/' . $value->min / 10 . '/' . round($value->sum / $value->count / 10, 1);
+}
+echo PHP_EOL . "}" . PHP_EOL;
+

app/libonebrc.php

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+<?php
+final class LibOneBrc {
+    private static $ffi = null;
+
+    function __construct() {
+        if (is_null(self::$ffi)) {
+            self::$ffi = FFI::cdef("char* run(const char* str);", "rust/libonebrc.so");
+        }
+    }
+
+    function run($filename) {
+       $resultPtr = self::$ffi->run($filename);
+       return FFI::string($resultPtr);
+    }
+}

rust/onebrc/.cargo/config.toml

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+[build]
+rustflags = ["-C", "target-cpu=native"]