tr_cache *
tr_cacheNew (int64_t max_bytes)
{
tr_cache * cache = tr_new0 (tr_cache, 1);
cache->blocks = TR_PTR_ARRAY_INIT;
cache->max_bytes = max_bytes;
cache->max_blocks = getMaxBlocks (max_bytes);
return cache;
}
int
tr_cacheSetLimit (tr_cache * cache, int64_t max_bytes)
{
char buf[128];
cache->max_bytes = max_bytes;
cache->max_blocks = getMaxBlocks (max_bytes);
tr_formatter_mem_B (buf, cache->max_bytes, sizeof (buf));
tr_logAddNamedDbg (MY_NAME, "Maximum cache size set to %s (%d blocks)", buf, cache->max_blocks);
return cacheTrim (cache);
}
uint32_t NVMAntiCacheDB::getFreeNVMBlockIndex() {
uint32_t free_index = 0;
if(m_NVMBlockFreeList.size() > 0) {
free_index = m_NVMBlockFreeList.back();
VOLT_DEBUG("popping %u from list of size: %d", free_index, (int)m_NVMBlockFreeList.size());
m_NVMBlockFreeList.pop_back();
} else {
if (m_nextFreeBlock == getMaxBlocks()) {
VOLT_WARN("Backing store full m_nextFreeBlock %d == max %d", m_nextFreeBlock, getMaxBlocks());
throw FullBackingStoreException(0, m_nextFreeBlock);
} else {
free_index = m_nextFreeBlock;
VOLT_DEBUG("no reusable blocks (size: %d), using index %u", (int)m_NVMBlockFreeList.size(), free_index);
++m_nextFreeBlock;
}
}
//int free_index = m_blockIndex++;
return free_index;
}