streamer_tree_cache_d Struct Reference
#include <tree-streamer.h>
Collaboration diagram for streamer_tree_cache_d:
Data Fields | |
| pointer_map< unsigned > * | node_map |
| vec< tree > | nodes |
| vec< hashval_t > | hashes |
Detailed Description
Cache of pickled nodes. Used to avoid writing the same node more
than once. The first time a tree node is streamed out, it is
entered in this cache. Subsequent references to the same node are
resolved by looking it up in this cache.
This is used in two ways:
- On the writing side, the first time T is added to STREAMER_CACHE,
a new reference index is created for T and T is emitted on the
stream. If T needs to be emitted again to the stream, instead of
pickling it again, the reference index is emitted.
- On the reading side, the first time T is read from the stream, it
is reconstructed in memory and a new reference index created for
T. The reconstructed T is inserted in some array so that when
the reference index for T is found in the input stream, it can be
used to look up into the array to get the reconstructed T. Field Documentation
| vec<hashval_t> streamer_tree_cache_d::hashes |
The node hashes (if available).
Referenced by preload_common_nodes(), streamer_tree_cache_add_to_node_array(), streamer_tree_cache_create(), and streamer_tree_cache_insert().
| pointer_map<unsigned>* streamer_tree_cache_d::node_map |
The mapping between tree nodes and slots into the nodes array.
Referenced by preload_common_nodes(), streamer_tree_cache_append(), streamer_tree_cache_create(), streamer_tree_cache_insert(), and streamer_tree_cache_replace_tree().
The nodes pickled so far.
Referenced by lto_read_tree_1(), preload_common_nodes(), streamer_tree_cache_add_to_node_array(), streamer_tree_cache_create(), and streamer_tree_cache_replace_tree().
The documentation for this struct was generated from the following file:
