#ifdef TRACE
#undef TRACE     /* All your trace are belong to us. */
#endif
#define TRACE ....

// this is really complicated

没有其他评论了

在drivers/net/sunhme.c (Linux内核)中:

/* Welcome to Sun Microsystems, can I take your order please? */
if(!hp->happy_flags & HFLAG_FENABLE)
        return happy_meal_bb_write(hp, tregs, reg, value);

/* Would you like fries with that? */
hme_write32(hp, &tregs->frame,
            (FRAME_WRITE | (hp->paddr << 23) |
             ((reg & 0xff) << 18) | (value & 0xffff)));
while(!(hme_read32(hp, &tregs->frame) & 0x10000) && --tries)
        udelay(20);

/* Anything else? */
if(!tries)
        printk(KERN_ERR "happy meal: Aieee, transceiver MIF write bolixed\n");

/* Fifty-two cents is your change, have a nice day. */

我不止一次使用过这个方法，当我对一个数学公式做了一些不明显的简化时，我不想记录:

//this formula is right, work out the math yourself if you don't believe me

下面是一个必须声明的局部变量，只是为了将一个常量传递给库函数:

// This only exists because Scott doesn't know how to use const correctly

// StupidCompilerDontInline(SCDI), in the test project where
// allcode was in a single cpp the compiler had inlined nearly
// everything which lead to nice stackoverflow.
// To prevent this the metods are made virtual
#define SCDI virtual