Only conditionally call H5Pset_evict_on_close

.github/workflows/ci.yml

@@ -273,7 +273,7 @@ jobs:
         with: {submodules: true}
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
-        with: {toolchain: 1.64}
+        with: {toolchain: "1.70"}
       - name: Build and test all crates
         run:
           cargo test --workspace -vv --features=hdf5-sys/static,hdf5-sys/zlib --exclude=hdf5-derive

CHANGELOG.md

@@ -16,7 +16,7 @@
 ### Changed
 
 - The `H5Type` derive macro now uses `proc-macro-error` to emit error messages.
-- MSRV is now `1.64.0` and Rust edition has now been bumped to 2021.
+- MSRV is now `1.70.0` and Rust edition has now been bumped to 2021.
 - Types in ChunkInfo has been changed to match HDF5.
 - Dependencies now uses the `dep:` syntax and are only enabled through features.
 - Some features are made weak and will not enable e.g. static build when asking for a
@@ -35,6 +35,7 @@
 - Applying filters without chunking will now produce an explicit error.
 - Fixed a bug where chunking could not be enabled for zero-sized extents.
 - Fixed library finding on Windows with MSYS2-distributed MinGW HDF5.
+- Fixed a bug which made parallel builds unusable.
 
 ## 0.8.1
 

hdf5/src/hl/plist/file_access.rs

@@ -1440,8 +1440,13 @@ impl FileAccessBuilder {
                     v.min_raw_perc as _,
                 ));
             }
-            if let Some(v) = self.evict_on_close {
-                h5try!(H5Pset_evict_on_close(id, hbool_t::from(v)));
+            if let Some(evict) = self.evict_on_close {
+                // Issue #259: H5Pset_evict_on_close is not allowed to be called
+                // even if the argument is `false` on e.g. parallel/mpio setups
+                let has_evict_on_close = h5get!(H5Pget_evict_on_close(id): hbool_t).map(|x| x > 0);
+                if evict != has_evict_on_close.unwrap_or(false) {
+                    h5try!(H5Pset_evict_on_close(id, hbool_t::from(evict)));
+                }
             }
             if let Some(v) = self.mdc_image_config {
                 let v = v.into();