PerThreadBumpPtrAllocator allows separating allocations by thread id.
That makes allocations race free. It is possible because
ThreadPoolExecutor class creates threads, keeps them until
the destructor of ThreadPoolExecutor is called, and assigns ids
to the threads. Thus PerThreadBumpPtrAllocator should be used with only
threads created by ThreadPoolExecutor. This allocator is useful when
thread safe BumpPtrAllocator is needed.
Reviewed By: MaskRay, dexonsmith, andrewng
Differential Revision: https://reviews.llvm.org/D142318
This patch hides thread specific handling under LLVM_ENABLE_THREADS guard.
It also removes usages of thread_local variables, since it has a weak
support on some platforms. Instead, the patch uses single mutex for locking
allocator. That may be replaced with more effective allocator later.
f.e. D142318
Differential Revision: https://reviews.llvm.org/D147649
ConcurrentHashTable - is a resizeable concurrent hashtable.
The range of resizings is limited up to x2^31.
The hashtable allows only concurrent insertions.
Concurrent hashtable is necessary for the D96035 patch.
Reviewed By: JDevlieghere
Differential Revision: https://reviews.llvm.org/D132455
ConcurrentHashTable - is a resizeable concurrent hashtable.
The range of resizings is limited up to x2^32. The hashtable allows only concurrent insertions.
Concurrent hashtable is necessary for the D96035 patch.
Reviewed By: JDevlieghere
Differential Revision: https://reviews.llvm.org/D132455
