Merging upstream version 1.70.0+dfsg2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 30 insertions, 0 deletions

diff --git a/vendor/gix/src/repository/cache.rs b/vendor/gix/src/repository/cache.rs
new file mode 100644
index 000000000..7dcd844e6
--- /dev/null
+++ b/vendor/gix/src/repository/cache.rs
@@ -0,0 +1,30 @@
+/// Configure how caches are used to speed up various git repository operations
+impl crate::Repository {
+    /// Sets the amount of space used at most for caching most recently accessed fully decoded objects, to `Some(bytes)`,
+    /// or `None` to deactivate it entirely.
+    ///
+    /// Note that it is unset by default but can be enabled once there is time for performance optimization.
+    /// Well-chosen cache sizes can improve performance particularly if objects are accessed multiple times in a row.
+    /// The cache is configured to grow gradually.
+    ///
+    /// Note that a cache on application level should be considered as well as the best object access is not doing one.
+    pub fn object_cache_size(&mut self, bytes: impl Into<Option<usize>>) {
+        let bytes = bytes.into();
+        match bytes {
+            Some(bytes) if bytes == 0 => self.objects.unset_object_cache(),
+            Some(bytes) => self
+                .objects
+                .set_object_cache(move || Box::new(crate::object::cache::MemoryCappedHashmap::new(bytes))),
+            None => self.objects.unset_object_cache(),
+        }
+    }
+
+    /// Set an object cache of size `bytes` if none is set.
+    ///
+    /// Use this method to avoid overwriting any existing value while assuring better performance in case no value is set.
+    pub fn object_cache_size_if_unset(&mut self, bytes: usize) {
+        if !self.objects.has_object_cache() {
+            self.object_cache_size(bytes)
+        }
+    }
+}