summaryrefslogtreecommitdiff
path: root/compiler/cwrap/src/Fildes.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'compiler/cwrap/src/Fildes.cpp')
-rw-r--r--compiler/cwrap/src/Fildes.cpp100
1 files changed, 100 insertions, 0 deletions
diff --git a/compiler/cwrap/src/Fildes.cpp b/compiler/cwrap/src/Fildes.cpp
new file mode 100644
index 000000000..5ccb83f05
--- /dev/null
+++ b/compiler/cwrap/src/Fildes.cpp
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd. 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.
+ */
+
+#include "cwrap/Fildes.h"
+
+#include <cassert>
+#include <unistd.h>
+
+namespace
+{
+
+/**
+ * @note making inline to this function will prevent unused function error
+ * as error_value() is used only inside assert()
+ */
+inline bool error_value(int fd) { return fd == -1; }
+
+inline bool valid_value(int fd) { return fd >= 0; }
+
+} // namespace
+
+namespace cwrap
+{
+
+Fildes::Fildes() : _value{-1}
+{
+ // DO NOTHING
+}
+
+Fildes::Fildes(int value) : _value{value}
+{
+ // DO NOTHING
+ assert(error_value(value) || valid_value(value));
+}
+
+Fildes::Fildes(Fildes &&fildes)
+{
+ set(fildes.release());
+ assert(error_value(fildes.get()));
+}
+
+Fildes::~Fildes()
+{
+ assert(error_value(_value) || valid_value(_value));
+
+ if (valid_value(_value))
+ {
+ close(_value);
+ _value = -1;
+ }
+
+ assert(error_value(_value));
+}
+
+Fildes &Fildes::operator=(Fildes &&fildes)
+{
+ set(fildes.release());
+ return (*this);
+}
+
+int Fildes::get(void) const { return _value; }
+
+void Fildes::set(int value)
+{
+ assert(error_value(_value) || valid_value(_value));
+
+ if (valid_value(_value))
+ {
+ close(_value);
+ _value = -1;
+ }
+ assert(error_value(_value));
+
+ _value = value;
+ assert(_value == value);
+}
+
+int Fildes::release(void)
+{
+ int res = get();
+ _value = -1;
+ return res;
+}
+
+bool valid(const Fildes &fildes) { return valid_value(fildes.get()); }
+
+} // namespace cwrap