Expose stats

Author: jiegec

Cargo.toml

@@ -5,7 +5,7 @@ documentation = "https://docs.rs/buddy_system_allocator"
 homepage = "https://github.com/rcore-os/buddy_system_allocator"
 repository = "https://github.com/rcore-os/buddy_system_allocator"
 keywords = ["allocator", "no_std", "heap"]
-version = "0.3.9"
+version = "0.4.0"
 authors = ["Jiajie Chen <noc@jiegec.ac.cn>"]
 edition = "2018"
 license = "MIT"

src/lib.rs

@@ -190,6 +190,21 @@ impl Heap {
         self.user -= layout.size();
         self.allocated -= size;
     }
+
+    /// Return the number of bytes that user requests
+    pub fn stats_alloc_user(&self) -> usize {
+        self.user
+    }
+
+    /// Return the number of bytes that are actually allocated
+    pub fn stats_alloc_actual(&self) -> usize {
+        self.allocated
+    }
+
+    /// Return the total number of bytes in the heap
+    pub fn stats_total_bytes(&self) -> usize {
+        self.total
+    }
 }
 
 impl fmt::Debug for Heap {