Hi all,
I was reading through some of the RAM cache code and stumbled across this: http://svn.apache.org/repos/asf/incubator/trafficserver/traffic/branches/dev /iocore/cache/RamCache.cc int RamCache::get_lock(INK_MD5 * key, Ptr<IOBufferData> *ret_data, EThread * t, inku32 auxkey1, inku32 auxkey2) { inku32 k = key->word(3); int pp = k % n_partitions; RamCachePartition *p = &partition[pp]; (void) p; // ??? CACHE_TRY_LOCK(l, p->lock, t); Or something similar: int RamCache::put(INK_MD5 * key, IOBufferData * data, EThread * t, inku32 auxkey1, inku32 auxkey2) { /* equivalent to ram cache disabled */ if (partition_size == 0) return 0; ProxyMutex *mutex = t->mutex; (void) mutex; // ??? inku32 k = key->word(3); I'm wondering what's its (the seemingly no-op void casts) purpose? Is it a long, lost holdover from some previous compiler version which required a statement like that to keep it quiet for some warning? I've seen it in several different files. Just curious...didn't know if this was some obscure trick I was unaware of - other than quieting a compiler to say a variable's unreferenced... Thanks, D.J. Stachniak
