loop binary for 'perf' reasons

Cargo.toml

@@ -15,6 +15,10 @@ path = "src/lib.rs"
 [[bin]]
 name = "parse_demo"
 path = "src/bin/main.rs"
+[[bin]]
+
+name = "loop"
+path = "src/bin/loop.rs"
 
 [dependencies]
 bitbuffer = "0.8"

src/bin/loop.rs

@@ -0,0 +1,46 @@
+use std::env;
+use std::fs;
+
+use main_error::MainError;
+use std::thread::sleep;
+use std::time::Duration;
+pub use tf_demo_parser::{Demo, DemoParser, Parse, ParseError, ParserState, Stream};
+
+#[cfg(feature = "jemallocator")]
+#[global_allocator]
+static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
+
+fn main() -> Result<(), MainError> {
+    #[cfg(feature = "better_panic")]
+    better_panic::install();
+
+    let args: Vec<_> = env::args().collect();
+    if args.len() < 2 {
+        println!("1 argument required");
+        return Ok(());
+    }
+    let path = args[1].clone();
+    let all = args
+        .get(2)
+        .map(|arg| arg.as_str() == "all")
+        .unwrap_or_default();
+    let file = fs::read(path)?;
+    sleep(Duration::from_secs(1));
+    for _ in 0..10 {
+        parse(&file, all)?;
+    }
+    Ok(())
+}
+
+#[inline(never)]
+fn parse(data: &[u8], all: bool) -> Result<(), MainError> {
+    let demo = Demo::new(data);
+    let parser = if all {
+        DemoParser::new_all(demo.get_stream())
+    } else {
+        DemoParser::new(demo.get_stream())
+    };
+    let (_, state) = parser.parse()?;
+    assert!(state.rounds.len() > 1);
+    Ok(())
+}