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- Memory_barrier abstract "A memory barrier, also known as a membar, memory fence or fence instruction, is a type of barrier instruction which causes a central processing unit (CPU) or compiler to enforce an ordering constraint on memory operations issued before and after the barrier instruction. This typically means that certain operations are guaranteed to be performed before the barrier, and others after.Memory barriers are necessary because most modern CPUs employ performance optimizations that can result in out-of-order execution. This reordering of memory operations (loads and stores) normally goes unnoticed within a single thread of execution, but can cause unpredictable behaviour in concurrent programs and device drivers unless carefully controlled. The exact nature of an ordering constraint is hardware dependent and defined by the architecture's memory ordering model. Some architectures provide multiple barriers for enforcing different ordering constraints.Memory barriers are typically used when implementing low-level machine code that operates on memory shared by multiple devices. Such code includes synchronization primitives and lock-free data structures on multiprocessor systems, and device drivers that communicate with computer hardware.".
- Memory_barrier wikiPageExternalLink memory-barriers.txt.
- Memory_barrier wikiPageExternalLink HPL-2004-209.html.
- Memory_barrier wikiPageExternalLink 8211.
- Memory_barrier wikiPageExternalLink MPmem-barrier.mspx.
- Memory_barrier wikiPageExternalLink oss-compiler-barriers-176055.pdf.
- Memory_barrier wikiPageExternalLink oss-memory-barriers-fences-176056.pdf.
- Memory_barrier wikiPageExternalLink whymb.2010.07.23a.pdf.
- Memory_barrier wikiPageExternalLink 573436.
- Memory_barrier wikiPageID "728216".
- Memory_barrier wikiPageRevisionID "603676073".
- Memory_barrier hasPhotoCollection Memory_barrier.
- Memory_barrier subject Category:Computer_memory.
- Memory_barrier subject Category:Consistency_models.
- Memory_barrier subject Category:Instruction_processing.
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- Memory_barrier comment "A memory barrier, also known as a membar, memory fence or fence instruction, is a type of barrier instruction which causes a central processing unit (CPU) or compiler to enforce an ordering constraint on memory operations issued before and after the barrier instruction.".
- Memory_barrier label "Bariera pamięci".
- Memory_barrier label "Memory barrier".
- Memory_barrier label "メモリバリア".
- Memory_barrier label "内存屏障".
- Memory_barrier sameAs メモリバリア.
- Memory_barrier sameAs 메모리_배리어.
- Memory_barrier sameAs Bariera_pamięci.
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- Memory_barrier sameAs Q875051.
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- Memory_barrier wasDerivedFrom Memory_barrier?oldid=603676073.
- Memory_barrier isPrimaryTopicOf Memory_barrier.