Created
April 21, 2013 19:17
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| // Note From MSDN: | |
| // In past versions of the Visual C++ compiler, the _ReadWriteBarrier | |
| // and _WriteBarrier functions were enforced only locally and did not | |
| // affect functions up the call tree. In Visual C++ 2005 and later, | |
| // these functions are enforced all the way up the call tree. | |
| // Intel and AMD (x86 and AMD64) enforces strong ordering (program ordering) | |
| // except a store followed by a load (the store becomes visible before | |
| // the load executes) http://en.wikipedia.org/wiki/Memory_ordering | |
| // x86 and x64: Just use compiler fence (no need for hardware fence) | |
| #define MEMBAR \ | |
| #if defined (_M_IX86) || defined (_M_X64) \ | |
| _ReadWriteBarrier(); \ | |
| #elif defined (_M_IA64) \ | |
| MemoryBarrier(); \ | |
| #else \ | |
| #error "Need to write code for this architecture" \ | |
| #endif |
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