build releases with mimalloc

server/base/Cargo.toml

@@ -9,6 +9,7 @@ publish = false
 rust-version = "1.82"
 
 [features]
+mimalloc = ["dep:libmimalloc-sys"]
 nightly = []
 
 [lib]
@@ -16,10 +17,14 @@ path = "lib.rs"
 
 [dependencies]
 ahash = "0.8"
-coded = { git = "https://github.com/scottlamb/coded", rev = "2c97994974a73243d5dd12134831814f42cdb0e8"}
+coded = { git = "https://github.com/scottlamb/coded", rev = "2c97994974a73243d5dd12134831814f42cdb0e8" }
 futures = "0.3"
 jiff = { workspace = true }
 libc = "0.2"
+libmimalloc-sys = { version = "0.1.41", features = [
+    "override",
+    "extended",
+], optional = true }
 nix = { workspace = true, features = ["time"] }
 nom = "7.0.0"
 rusqlite = { workspace = true }

server/base/lib.rs

@@ -75,3 +75,16 @@ impl std::ops::Deref for Condvar {
         &self.0
     }
 }
+
+pub fn ensure_malloc_used() {
+    #[cfg(feature = "mimalloc")]
+    {
+        // This is a load-bearing debug line.
+        // Building `libmimalloc-sys` with the `override` feature will override `malloc` and
+        // `free` as used through the Rust global allocator, SQLite, and `libc`. But...`cargo`
+        // doesn't seem to build `libmimalloc-sys` at all if it's not referenced from Rust code.
+        tracing::debug!("mimalloc version {}", unsafe {
+            libmimalloc_sys::mi_version()
+        })
+    }
+}