What if Assigned Worth is also Pointer Indirected? > 자유게시판

Memory ordering is the order of accesses to laptop Memory Wave by a CPU. Memory ordering relies on each the order of the directions generated by the compiler at compile time and the execution order of the CPU at runtime. Nevertheless, memory order is of little concern exterior of multithreading and memory-mapped I/O, because if the compiler or CPU changes the order of any operations, it must essentially be sure that the reordering does not change the output of odd single-threaded code. The memory order is claimed to be sturdy or sequentially consistent when both the order of operations can not change or when such adjustments haven't any visible effect on any thread. Conversely, the memory order is named weak or relaxed when one thread cannot predict the order of operations arising from another thread. Many naïvely written parallel algorithms fail when compiled or executed with a weak memory order. The problem is most often solved by inserting memory barrier instructions into this system.