I\'ve spent today looking into lockless queues.I have a multiple producer, multiple consumer situation.I implemented, for testing, a system using the Interlocked SList thing under Win32 and it doubled
Does 80x86 have instructi开发者_运维百科ons for atomically testing and setting individual bits of a word?If you mean testing and modifying a bit as a single atomic operation, then the bit test instruc
I\'m working on a Perl-based file synchronization tool.It downloads files into a temporary directory (which is guaranteed to be on the same filesystem as the real file) and then moves the temporary fi
On most common platforms (the most important being x86; I understand that some platforms have extremely difficult memory models that provide almost no guarantees useful for multithreading, but I don\'
Reading a few threads (common concurrency pro开发者_StackOverflow社区blems, volatile keyword, memory model) I\'m confused about concurrency issues in Java.
GCC\'s recent support for atomic operations (as described here) is great, and is 90% of what we need. Unfortunately, some of our products still need to run on Windows and so we need atomic integer ope
I read somewhere (can\'t find the page anymore) that lock free data structures are more efficient \"for certain workloads\" which seems to imply that sometimes they\'re actually slower or the gain fro
x86 and other architectures provide special atomic instructions (lock, cmpxchg, etc.) that allow you to write \'lock free\' data structures. But as more and more cores are added, it seems as though th
Obviously, atomic operations make sure that different threads don\'t clobber a value. But is this still true across processes, when using shared memory? Even if the processes happen to be scheduled by
I\'m trying to create and follow best practices for versioning control and came across a reference to atomic commits in Subversion. Since I\'ve never heard of this action, I have a few questions about
加载中,请稍侯......