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//===-- condition_variable_base.h -------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef SCUDO_CONDITION_VARIABLE_BASE_H_
#define SCUDO_CONDITION_VARIABLE_BASE_H_
#include "mutex.h"
#include "thread_annotations.h"
namespace scudo {
template <typename Derived> class ConditionVariableBase {
public:
constexpr ConditionVariableBase() = default;
void bindTestOnly(HybridMutex &Mutex) {
#if SCUDO_DEBUG
boundMutex = &Mutex;
#else
(void)Mutex;
#endif
}
void notifyAll(HybridMutex &M) REQUIRES(M) {
#if SCUDO_DEBUG
CHECK_EQ(&M, boundMutex);
#endif
getDerived()->notifyAllImpl(M);
}
void wait(HybridMutex &M) REQUIRES(M) {
#if SCUDO_DEBUG
CHECK_EQ(&M, boundMutex);
#endif
getDerived()->waitImpl(M);
}
protected:
Derived *getDerived() { return static_cast<Derived *>(this); }
#if SCUDO_DEBUG
// Because thread-safety analysis doesn't support pointer aliasing, we are not
// able to mark the proper annotations without false positive. Instead, we
// pass the lock and do the same-lock check separately.
HybridMutex *boundMutex = nullptr;
#endif
};
} // namespace scudo
#endif // SCUDO_CONDITION_VARIABLE_BASE_H_
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