Use jemalloc on macOS

Author: devongovett

Cargo.lock

@@ -20,5 +20,8 @@ itertools = "*"
 smallvec = { version = "1.7.0", features = ["union"] }
 bitflags = "*"
 
+[target.'cfg(target_os = "macos")'.dependencies]
+jemallocator = { version = "0.3.2", features = ["disable_initial_exec_tls"] }
+
 [build-dependencies]
 napi-build = { version = "1" }

Cargo.toml

@@ -9,6 +9,10 @@ extern crate itertools;
 extern crate smallvec;
 extern crate bitflags;
 
+#[cfg(target_os = "macos")]
+#[global_allocator]
+static GLOBAL: jemallocator::Jemalloc = jemallocator::Jemalloc;
+
 mod parser;
 mod rules;
 mod declaration;