23   using AllocationMap = DenseMap<unsigned, sys::MemoryBlock>;  in allocate()
52       assert((SlabSize % sys::Process::getPageSizeEstimate()) == 0 &&  in allocate()
54       sys::MemoryBlock Slab(SlabStart, SlabSize);  in allocate()
55       if (auto EC = sys::Memory::releaseMappedMemory(Slab))  in allocate()
65         if (auto EC = sys::Memory::protectMappedMemory(Block, Prot))  in allocate()
67         if (Prot & sys::Memory::MF_EXEC)  in allocate()
68           sys::Memory::InvalidateInstructionCache(Block.base(),  in allocate()
77   if (!isPowerOf2_64((uint64_t)sys::Process::getPageSizeEstimate()))  in allocate()
82   const sys::Memory::ProtectionFlags ReadWrite =  in allocate()
83       static_cast<sys::Memory::ProtectionFlags>(sys::Memory::MF_READ |  in allocate()
84                                                 sys::Memory::MF_WRITE);  in allocate()
91     if (Seg.getAlignment() > sys::Process::getPageSizeEstimate())  in allocate()
96     TotalSize = alignTo(TotalSize, sys::Process::getPageSizeEstimate());  in allocate()
104       sys::Memory::allocateMappedMemory(TotalSize, nullptr, ReadWrite, EC);  in allocate()
115                                    sys::Process::getPageSizeEstimate());  in allocate()
119     sys::MemoryBlock SegMem(SlabRemaining.base(), SegmentSize);  in allocate()
120     SlabRemaining = sys::MemoryBlock((char *)SlabRemaining.base() + SegmentSize,  in allocate()