jemalloc and triomphe

common/malloc_utils/Cargo.toml

@@ -11,6 +11,8 @@ lighthouse_metrics = { path = "../lighthouse_metrics" }
 lazy_static = "1.4.0"
 libc = "0.2.79"
 parking_lot = "0.11.0"
+jemallocator = { version = "0.3.0", optional = true }
 
 [features]
 mallinfo2 = []
+jemalloc = ["jemallocator"]

common/malloc_utils/src/jemalloc.rs

@@ -0,0 +1,2 @@
+#[global_allocator]
+static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;

common/malloc_utils/src/lib.rs

@@ -24,18 +24,27 @@
 //! detecting `glibc` are best-effort. If this crate throws errors about undefined external
 //! functions, then try to compile with the `not_glibc_interface` module.
 
-#[cfg(all(target_os = "linux", not(target_env = "musl")))]
+#[cfg(all(
+    target_os = "linux",
+    not(any(target_env = "musl", feature = "jemalloc"))
+))]
 mod glibc;
 
+#[cfg(feature = "jemalloc")]
+mod jemalloc;
+
 pub use interface::*;
 
-#[cfg(all(target_os = "linux", not(target_env = "musl")))]
+#[cfg(all(
+    target_os = "linux",
+    not(any(target_env = "musl", feature = "jemalloc"))
+))]
 mod interface {
     pub use crate::glibc::configure_glibc_malloc as configure_memory_allocator;
     pub use crate::glibc::scrape_mallinfo_metrics as scrape_allocator_metrics;
 }
 
-#[cfg(any(not(target_os = "linux"), target_env = "musl"))]
+#[cfg(any(not(target_os = "linux"), target_env = "musl", feature = "jemalloc"))]
 mod interface {
     #[allow(dead_code, clippy::unnecessary_wraps)]
     pub fn configure_memory_allocator() -> Result<(), String> {