Merge pull request #37 from antiguru/file_stats

examples/disk_usage.rs

@@ -0,0 +1,51 @@
+fn main() {
+    let mut stats = lgalloc::LgAllocStats::default();
+    let buffer_size = 32 << 20;
+
+    let buffers = 32;
+
+    let mut config = lgalloc::LgAlloc::new();
+    config.enable();
+    config.eager_return(true);
+    config.with_path(std::env::temp_dir());
+    lgalloc::lgalloc_set_config(&config);
+
+    println!("Allocating {buffers} regions of {buffer_size} size...");
+    let mut regions: Vec<_> = (0..32)
+        .map(|_| lgalloc::allocate::<u8>(32 << 20).unwrap())
+        .collect();
+    print_stats(&mut stats);
+
+    for (ptr, cap, _handle) in &regions {
+        println!("Setting region at {ptr:?}...");
+        let slice = unsafe { std::slice::from_raw_parts_mut(ptr.as_ptr(), *cap) };
+        for i in slice {
+            *i = 1;
+        }
+    }
+    print_stats(&mut stats);
+
+    let mut s = String::new();
+    let stdin = std::io::stdin();
+
+    println!("Enter to continue");
+    stdin.read_line(&mut s).unwrap();
+    print_stats(&mut stats);
+
+    println!("Dropping regions");
+    for (_ptr, _cap, handle) in regions.drain(..) {
+        lgalloc::deallocate(handle);
+    }
+
+    println!("Enter to continue");
+    stdin.read_line(&mut s).unwrap();
+    print_stats(&mut stats);
+}
+
+fn print_stats(stats: &mut lgalloc::LgAllocStats) {
+    lgalloc::lgalloc_stats(stats);
+
+    for file_stat in &stats.file_stats {
+        println!("{file_stat:?}");
+    }
+}