Adding an environmental variable to control the cuda host memory limit.

Change: 135978018

1 files changed, 40 insertions, 0 deletions

diff --git a/tensorflow/core/util/env_var.h b/tensorflow/core/util/env_var.h
new file mode 100644
index 0000000000..ec661f1d81
--- /dev/null
+++ b/tensorflow/core/util/env_var.h
@@ -0,0 +1,40 @@
+/* Copyright 2016 The TensorFlow Authors. All Rights Reserved.
+
+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.
+==============================================================================*/
+
+#ifndef TENSORFLOW_UTIL_ENV_VAR_H_
+
+#include "tensorflow/core/lib/core/status.h"
+#include "tensorflow/core/lib/core/stringpiece.h"
+#include "tensorflow/core/platform/types.h"
+
+namespace tensorflow {
+
+// Return a boolean into "value" from the environmental variable "env_var_name".
+// If it is unset, the default value is used.
+// A string "0" or a case insensitive "false" is interpreted as false.
+// A string "1" or a case insensitive "true" is interpreted as true.
+// Otherwise, an error status is returned.
+Status ReadBoolFromEnvVar(StringPiece env_var_name, bool default_val,
+                          bool* value);
+
+// Return an int64 into "value" from the environmental variable "env_var_name".
+// If it is unset, the default value is used.
+// If the string cannot be parsed into int64, an error status is returned.
+Status ReadInt64FromEnvVar(StringPiece env_var_name, int64 default_val,
+                           int64* value);
+
+}  // namespace tensorflow
+
+#endif  // TENSORFLOW_UTIL_ENV_VAR_H_