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Diffstat (limited to 'common/netd/libnetdutils/include/netdutils/Misc.h')
-rw-r--r-- | common/netd/libnetdutils/include/netdutils/Misc.h | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/common/netd/libnetdutils/include/netdutils/Misc.h b/common/netd/libnetdutils/include/netdutils/Misc.h deleted file mode 100644 index d344f81f..00000000 --- a/common/netd/libnetdutils/include/netdutils/Misc.h +++ /dev/null @@ -1,63 +0,0 @@ -/* - * Copyright (C) 2017 The Android Open Source Project - * - * 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 NETUTILS_MISC_H -#define NETUTILS_MISC_H - -#include <map> - -namespace android { -namespace netdutils { - -// Lookup key in map, returing a default value if key is not found -template <typename U, typename V> -inline const V& findWithDefault(const std::map<U, V>& map, const U& key, const V& dflt) { - auto it = map.find(key); - return (it == map.end()) ? dflt : it->second; -} - -// Movable, copiable, scoped lambda (or std::function) runner. Useful -// for running arbitrary cleanup or logging code when exiting a scope. -// -// Compare to defer in golang. -template <typename FnT> -class Cleanup { - public: - Cleanup() = delete; - explicit Cleanup(FnT fn) : mFn(fn) {} - ~Cleanup() { if (!mReleased) mFn(); } - - void release() { mReleased = true; } - - private: - bool mReleased{false}; - FnT mFn; -}; - -// Helper to make a new Cleanup. Avoids complex or impossible syntax -// when wrapping lambdas. -// -// Usage: -// auto cleanup = makeCleanup([](){ your_code_here; }); -template <typename FnT> -Cleanup<FnT> makeCleanup(FnT fn) { - return Cleanup<FnT>(fn); -} - -} // namespace netdutils -} // namespace android - -#endif /* NETUTILS_MISC_H */ |