📄 barrier.h
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#ifndef __SYSDEP_I386_BARRIER_H#define __SYSDEP_I386_BARRIER_H/* Copied from include/asm-i386 for use by userspace. i386 has the option * of using mfence, but I'm just using this, which works everywhere, for now. */#define mb() asm volatile("lock; addl $0,0(%esp)")#endif⌨️ 快捷键说明
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