[PATCH core 2/3] Added methods to improve memory leaks debugging

[mf...@redhat.com]

From: Michal Fojtik <mf...@redhat.com>


Signed-off-by: Michal fojtik <mf...@redhat.com>
---
 server/lib/deltacloud/core_ext.rb      |  1 +
 server/lib/deltacloud/core_ext/base.rb | 30 ++++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+)
 create mode 100644 server/lib/deltacloud/core_ext/base.rb

diff --git a/server/lib/deltacloud/core_ext.rb b/server/lib/deltacloud/core_ext.rb
index 0d37343..f19d421 100644
--- a/server/lib/deltacloud/core_ext.rb
+++ b/server/lib/deltacloud/core_ext.rb
@@ -22,3 +22,4 @@ require_relative './core_ext/integer'
 require_relative './core_ext/ordered_hash'
 require_relative './core_ext/proc'
 require_relative './core_ext/string'
+require_relative './core_ext/base'
diff --git a/server/lib/deltacloud/core_ext/base.rb b/server/lib/deltacloud/core_ext/base.rb
new file mode 100644
index 0000000..fbf76ab
--- /dev/null
+++ b/server/lib/deltacloud/core_ext/base.rb
@@ -0,0 +1,30 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you 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.
+
+def get_current_memory_usage
+  `ps -o rss= -p #{Process.pid}`.to_i
+end
+
+def profile_memory(&block)
+  before = get_current_memory_usage
+  file, line, _ = caller[0].split(':')
+  if block_given?
+    instance_eval(&block)
+    puts "[#{file}:#{line}: #{(get_current_memory_usage - before) / 1024} MB (consumed)]"
+  else
+    before = 0
+    puts "[#{file}:#{line}: #{(get_current_memory_usage - before) / 1024} MB (all)]"
+  end
+end
-- 
1.7.12.1