comparison rust/hg-core/src/repo.rs @ 50222:ecd28d89c29e stable

dirstate-v2: add devel config option to control write behavior

This will help us to write predictable tests checking behavior in each case.

50221:1891086f6c7f

            self.dirstate_parents.set(docket.parents());
            self.dirstate_data_file_uuid
                .set(Some(docket.uuid.to_owned()));
            let data_size = docket.data_size();
            let metadata = docket.tree_metadata();
            if crate::vfs::is_on_nfs_mount(docket.data_filename()) {
                // Don't mmap on NFS to prevent `SIGBUS` error on deletion
                OwningDirstateMap::new_v2(
                    self.hg_vfs().read(docket.data_filename())?,
                    data_size,
                    metadata,
                )
            } else if let Some(data_mmap) = self
                .hg_vfs()
                .mmap_open(docket.data_filename())
                .io_not_found_as_none()?
            {
                OwningDirstateMap::new_v2(data_mmap, data_size, metadata)
            } else {
                OwningDirstateMap::new_v2(Vec::new(), data_size, metadata)
            }
        } else {
            let (map, parents) =
                OwningDirstateMap::new_v1(dirstate_file_contents)?;
            self.dirstate_parents.set(parents);
            Ok(map)

50222:ecd28d89c29e

            self.dirstate_parents.set(docket.parents());
            self.dirstate_data_file_uuid
                .set(Some(docket.uuid.to_owned()));
            let data_size = docket.data_size();
            let metadata = docket.tree_metadata();
            let mut map =
                if crate::vfs::is_on_nfs_mount(docket.data_filename()) {
                    // Don't mmap on NFS to prevent `SIGBUS` error on deletion
                    OwningDirstateMap::new_v2(
                        self.hg_vfs().read(docket.data_filename())?,
                        data_size,
                        metadata,
                    )
                } else if let Some(data_mmap) = self
                    .hg_vfs()
                    .mmap_open(docket.data_filename())
                    .io_not_found_as_none()?
                {
                    OwningDirstateMap::new_v2(data_mmap, data_size, metadata)
                } else {
                    OwningDirstateMap::new_v2(Vec::new(), data_size, metadata)
                }?;

            let write_mode_config = self
                .config()
                .get_str(b"devel", b"dirstate.v2.data_update_mode")
                .unwrap_or(Some("auto"))
                .unwrap_or("auto"); // don't bother for devel options
            let write_mode = match write_mode_config {
                "auto" => DirstateMapWriteMode::Auto,
                "force-new" => DirstateMapWriteMode::ForceNewDataFile,
                "force-append" => DirstateMapWriteMode::ForceAppend,
                _ => DirstateMapWriteMode::Auto,
            };

            map.with_dmap_mut(|m| m.set_write_mode(write_mode));

            Ok(map)
        } else {
            let (map, parents) =
                OwningDirstateMap::new_v1(dirstate_file_contents)?;
            self.dirstate_parents.set(parents);
            Ok(map)