Reserve string buffer in PatternFormatter::format for performance

SpriteOvO · Aug 16, 2024 · bf30def · bf30def
1 parent 294f71c
commit bf30def
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/spdlog/src/formatter/pattern_formatter/mod.rs b/spdlog/src/formatter/pattern_formatter/mod.rs
@@ -375,6 +375,12 @@ where
         dest: &mut StringBuf,
         ctx: &mut FormatterContext,
     ) -> crate::Result<()> {
+        cfg_if::cfg_if! {
+            if #[cfg(not(feature = "flexible-string"))] {
+                dest.reserve(crate::string_buf::RESERVE_SIZE);
+            }
+        };
+
         let mut ctx = PatternContext::new(ctx);
         self.pattern.format(record, dest, &mut ctx)?;
         Ok(())