atomicops-inl.h File Reference

#include "uv.h"
#include "internal.h"

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Functions
static char	uv__atomic_exchange_set (char volatile *target)

Function Documentation

uv__atomic_exchange_set()

static char uv__atomic_exchange_set ( char volatile *  target )

inlinestatic

Definition at line 45 of file atomicops-inl.h.

                                                                  {
  const char one = 1;
  char old_value;
  __asm__ __volatile__ ("lock xchgb %0, %1\n\t"
                        : "=r"(old_value), "=m"(*target)
                        : "0"(one), "m"(*target)
                        : "memory");
  return old_value;
}

Referenced by uv_async_send().