/usr/include/fst/lock.h is in libfst-dev 1.6.3-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 55 56 57 58 59 60 61 62 | // 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.
//
// See www.openfst.org for extensive documentation on this weighted
// finite-state transducer library.
//
// Google-compatibility locking declarations and inline definitions.
#ifndef FST_LIB_LOCK_H_
#define FST_LIB_LOCK_H_
#include <mutex>
namespace fst {
using namespace std;
class Mutex {
public:
Mutex() {}
inline void Lock() { mu_.lock(); }
inline void Unlock() { mu_.unlock(); }
private:
std::mutex mu_;
Mutex(const Mutex &) = delete;
Mutex &operator=(const Mutex &) = delete;
};
class MutexLock {
public:
explicit MutexLock(Mutex *mu) : mu_(mu) { mu_->Lock(); }
~MutexLock() { mu_->Unlock(); }
private:
Mutex *mu_;
MutexLock(const MutexLock &) = delete;
MutexLock &operator=(const MutexLock &) = delete;
};
// Currently, we don't use a separate reader lock.
// TODO(kbg): Implement this with std::shared_mutex once C++17 becomes widely
// available.
using ReaderMutexLock = MutexLock;
} // namespace fst
#endif // FST_LIB_LOCK_H_
|