Object-cache: enforce cache size to be less than RAM. (#2338)

pkg/sys/stats.go

@@ -0,0 +1,27 @@
+/*
+ * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sys
+
+import "errors"
+
+// ErrNotImplemented - GetStats() is not implemented on bsds.
+var ErrNotImplemented = errors.New("not implemented")
+
+// Stats - system statistics.
+type Stats struct {
+	TotalRAM uint64 // Physical RAM size in bytes,
+}