Revert "strand-cam: remove jemallocator"

This reverts commit 7893896.

CHANGELOG.md

@@ -36,9 +36,6 @@
   setting is now `start_backend = "pylon"` to enable Basler Pylon cameras to
   continue with existing Braid `.toml` configuration files.)
 * Rename command line program `offline-retrack` to `braid-offline-retrack`.
-* Removed jemallocator from `strand-cam` in favor of the default rust allocator.
-  This was added to fix a "corrupted size vs. prev_size" error in 2019, but
-  seems no longer needed.
 * MKV and FMF files use frame timestamps computed from the triggerbox device if
   available.
 * When saving MKV, FMF and April Tag CSV files, default filenames include the

strand-cam/Cargo.toml

@@ -11,6 +11,7 @@ rust-version = "1.60"
 path = "src/strand-cam.rs"
 
 [dependencies]
+jemallocator = {version="0.3", optional=true}
 async-change-tracker = "0.3"
 bui-backend-types = "0.8"
 bui-backend = {version="0.14", default-features = false}
@@ -131,6 +132,8 @@ flydratrax = ["mvg", "nalgebra", "strand-cam-pseudo-cal", "flydra-mvg",
 # build with the flydra-feature-detector
 flydra_feat_detect = ["flydra-feature-detector"]
 
+jemalloc = ["jemallocator"]
+
 vpx = ["mkv-writer/vpx"]
 
 use_ipp = ["flydra-feature-detector?/use_ipp"]

strand-cam/src/cli_app.rs

@@ -1,3 +1,7 @@
+#[cfg(feature = "jemalloc")]
+#[global_allocator]
+static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
+
 use std::path::PathBuf;
 
 use clap::Arg;