Kernel  |  3.0

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C++程序  |  10行  |  281 B
#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