diff options
Diffstat (limited to 'src/support/lockedpool.h')
| -rw-r--r-- | src/support/lockedpool.h | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/src/support/lockedpool.h b/src/support/lockedpool.h index fc85e6c73c..ccfae16701 100644 --- a/src/support/lockedpool.h +++ b/src/support/lockedpool.h @@ -10,6 +10,7 @@ #include <map> #include <mutex> #include <memory> +#include <unordered_map> /** * OS-dependent allocation and deallocation of locked/pinned memory pages. @@ -88,11 +89,19 @@ public: */ bool addressInArena(void *ptr) const { return ptr >= base && ptr < end; } private: - /** Map of chunk address to chunk information. This class makes use of the - * sorted order to merge previous and next chunks during deallocation. - */ - std::map<char*, size_t> chunks_free; - std::map<char*, size_t> chunks_used; + typedef std::multimap<size_t, char*> SizeToChunkSortedMap; + /** Map to enable O(log(n)) best-fit allocation, as it's sorted by size */ + SizeToChunkSortedMap size_to_free_chunk; + + typedef std::unordered_map<char*, SizeToChunkSortedMap::const_iterator> ChunkToSizeMap; + /** Map from begin of free chunk to its node in size_to_free_chunk */ + ChunkToSizeMap chunks_free; + /** Map from end of free chunk to its node in size_to_free_chunk */ + ChunkToSizeMap chunks_free_end; + + /** Map from begin of used chunk to its size */ + std::unordered_map<char*, size_t> chunks_used; + /** Base address of arena */ char* base; /** End address of arena */ |