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In the caching part of the secondary path, when about to try to release memory to the OS, we always wait while acquiring the lock. However, if multiple threads are attempting this at the same time, all other threads will likely do nothing when the release call is made. Change the algorithm to skip the release if there is another release in process. Also, pull the lock outside the releaseOlderThan function. This is so that in the store path, we use the tryLock and skip if another thread is releasing. But in the path where a forced release call is being made, that call will wait for release to complete which guarantees that all entries are released when requested.
Compiler-RT ================================ This directory and its subdirectories contain source code for the compiler support routines. Compiler-RT is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. ================================