/usr/include/llvm-6.0/llvm/ADT/ScopeExit.h is in llvm-6.0-dev 1:6.0-1ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | //===- llvm/ADT/ScopeExit.h - Execute code at scope exit --------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the make_scope_exit function, which executes user-defined
// cleanup logic at scope exit.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_ADT_SCOPE_EXIT_H
#define LLVM_ADT_SCOPE_EXIT_H
#include "llvm/Support/Compiler.h"
#include <type_traits>
#include <utility>
namespace llvm {
namespace detail {
template <typename Callable> class scope_exit {
Callable ExitFunction;
public:
template <typename Fp>
explicit scope_exit(Fp &&F) : ExitFunction(std::forward<Fp>(F)) {}
scope_exit(scope_exit &&Rhs) : ExitFunction(std::move(Rhs.ExitFunction)) {}
~scope_exit() { ExitFunction(); }
};
} // end namespace detail
// Keeps the callable object that is passed in, and execute it at the
// destruction of the returned object (usually at the scope exit where the
// returned object is kept).
//
// Interface is specified by p0052r2.
template <typename Callable>
LLVM_NODISCARD detail::scope_exit<typename std::decay<Callable>::type>
make_scope_exit(Callable &&F) {
return detail::scope_exit<typename std::decay<Callable>::type>(
std::forward<Callable>(F));
}
} // end namespace llvm
#endif
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