add global mutex

Cargo.toml

@@ -2,7 +2,7 @@
 name = "eccodes-sys"
 description = "Low-level Rust bindings for latests ecCodes version."
 repository = "https://github.com/ScaleWeather/eccodes-sys"
-version = "0.5.1"
+version = "0.5.2"
 readme = "README.md"
 authors = ["Jakub Lewandowski <[email protected]>"]
 keywords = ["eccodes", "grib", "bufr", "meteorology", "weather"]

src/lib.rs

@@ -47,6 +47,12 @@
 //!- `tests` - turns on generation of layout tests by `bindgen`, should not be used in production. Layout tests are off by default as they derefrence null pointers causing undefined behaviour
 //!
 
+use std::sync::Mutex;
+
+/// Global mutex to synchronize functions that fail in concurrent context,
+/// eg. `codes_handle_new_from_file`, `codes_index_add_file` etc.
+pub static CODES_LOCK: Mutex<()> = Mutex::new(());
+
 #[cfg(not(feature = "docs"))]
 include!(concat!(env!("OUT_DIR"), "/bindings.rs"));