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ab17ecd107
This may improve the waiting of `Region->MMLock` while trying to refill the freelist. Instead of always waiting on the completion of `populateFreeListAndPopBatch()` or `releaseToOSMaybe()`, `pushBlocks()` also refills the freelist. This increases the chance of earlier return from `popBatches()`. The support of condition variable hasn't been done for all platforms. Therefore, add another `popBatchWithCV()` and it can be configured in the allocator configuration by setting `Primary::UseConditionVariable` and the desired `ConditionVariableT`. Reviewed By: cferris Differential Revision: https://reviews.llvm.org/D156146
39 lines
961 B
C++
39 lines
961 B
C++
//===-- condition_variable_linux.h ------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef SCUDO_CONDITION_VARIABLE_LINUX_H_
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#define SCUDO_CONDITION_VARIABLE_LINUX_H_
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#include "platform.h"
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#if SCUDO_LINUX
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#include "atomic_helpers.h"
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#include "condition_variable_base.h"
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#include "thread_annotations.h"
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namespace scudo {
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class ConditionVariableLinux
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: public ConditionVariableBase<ConditionVariableLinux> {
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public:
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void notifyAllImpl(HybridMutex &M) REQUIRES(M);
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void waitImpl(HybridMutex &M) REQUIRES(M);
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private:
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u32 LastNotifyAll = 0;
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atomic_u32 Counter = {};
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};
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} // namespace scudo
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#endif // SCUDO_LINUX
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#endif // SCUDO_CONDITION_VARIABLE_LINUX_H_
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