I have found lock inc addr but that doesn't keep a copy of the stored value around and even a read immediately after it in the same thread could come after a competing write.
我找到了lock inc addr，但是它没有保存存储值的副本，甚至在同一个线程中的读取之后立即读取也会在竞争写入之后。
The best solution I have found is a load/inc/cas loop.
我发现的最佳解决方案是load / inc / cas循环。
2 个解决方案
#1
11
lock xadd is your friend.
锁xadd是你的朋友。
#2
3
see atomic_impl.h for more x86/x86_64 atomic primitives and usage.
有关更多x86 / x86_64原子基元和用法，请参阅atomic_impl.h。
#1
11
lock xadd is your friend.
锁xadd是你的朋友。
#2
3
see atomic_impl.h for more x86/x86_64 atomic primitives and usage.
有关更多x86 / x86_64原子基元和用法，请参阅atomic_impl.h。