allocate memory by slabs

weed/util/mem/slot_pool_test.go

@@ -0,0 +1,37 @@
+package mem
+
+import (
+	"testing"
+)
+
+func TestAllocateFree(t *testing.T) {
+	buf := Allocate(12)
+	Free(buf)
+	if cap(buf) != min_size {
+		t.Errorf("min size error allocated capacity=%d", cap(buf))
+	}
+	if len(buf) != 12 {
+		t.Errorf("size error")
+	}
+
+	buf = Allocate(4883)
+	Free(buf)
+	if cap(buf) != 1024<<bitCount(4883) {
+		t.Errorf("min size error allocated capacity=%d", cap(buf))
+	}
+	if len(buf) != 4883 {
+		t.Errorf("size error")
+	}
+
+}
+
+func TestBitCount(t *testing.T) {
+	count := bitCount(12)
+	if count != 0 {
+		t.Errorf("bitCount error count=%d", count)
+	}
+	if count != bitCount(min_size) {
+		t.Errorf("bitCount error count=%d", count)
+	}
+
+}