Add first version

[ric-plt/sdl.git] / src / filedescriptor.cpp

diff --git a/src/filedescriptor.cpp b/src/filedescriptor.cpp
new file mode 100644 (file)
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+++ b/src/filedescriptor.cpp
@@ -0,0 +1,77 @@
+/*
+   Copyright (c) 2018-2019 Nokia.
+
+   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 "private/filedescriptor.hpp"
+#include "private/system.hpp"
+
+using namespace shareddatalayer;
+
+namespace
+{
+    int moveFD(int& fd)
+    {
+        const int ret(fd);
+        fd = -1;
+        return ret;
+    }
+}
+
+FileDescriptor::FileDescriptor(int fd) noexcept:
+    FileDescriptor(System::getSystem(), fd)
+{
+}
+
+FileDescriptor::FileDescriptor(System& system, int fd) noexcept:
+    system(&system),
+    fd(fd)
+{
+}
+
+FileDescriptor::FileDescriptor(FileDescriptor&& fd) noexcept:
+    system(fd.system),
+    fd(moveFD(fd.fd)),
+    atCloseCb(std::move(fd.atCloseCb))
+{
+}
+
+FileDescriptor& FileDescriptor::operator = (FileDescriptor&& fd) noexcept
+{
+    close();
+    system = fd.system;
+    this->fd = moveFD(fd.fd);
+    atCloseCb = std::move(fd.atCloseCb);
+    return *this;
+}
+
+FileDescriptor::~FileDescriptor()
+{
+    close();
+}
+
+void FileDescriptor::atClose(std::function<void(int)> atCloseCb)
+{
+    this->atCloseCb = atCloseCb;
+}
+
+void FileDescriptor::close()
+{
+    if (fd < 0)
+        return;
+    if (atCloseCb)
+        atCloseCb(fd);
+    system->close(fd);
+    fd = -1;
+}