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| author | Sergiu Ivanov <unlimitedscolobb@gmail.com> | 2008-09-19 11:30:09 +0300 |
|---|---|---|
| committer | Sergiu Ivanov <unlimitedscolobb@gmail.com> | 2008-09-19 11:30:09 +0300 |
| commit | 783e451ddefe81ef0c83412569b0a99c415f28d9 (patch) | |
| tree | 23a256044ceedc93deb4576231473e8b26fc26a8 /ncache.h | |
| parent | 06c2f31b8e3d8a5818f2bc28b554a8929a1f722f (diff) | |
Added the mechanism of maintaining shadow nodes alive.
I refactored the node cache in such a way that it now only
maintains references to nodes (the reason is that only
directory nodes and shadow nodes are created, therefore the
existing node cache is very well suited for this purpose).
It must be remarked that the node cache, borrowed from
unionfs, has never actually been a *cache*, therefore this
small change does not alter things badly.
I also removed the command line option --ncache-size.
Diffstat (limited to 'ncache.h')
| -rw-r--r-- | ncache.h | 22 |
1 files changed, 18 insertions, 4 deletions
@@ -36,7 +36,8 @@ /*----------------------------------------------------------------------------*/ /*--------Macros--------------------------------------------------------------*/ /*The default maximal cache size*/ -#define NCACHE_SIZE 256 +/*#define NCACHE_SIZE 256*/ +/*SEE ALSO the comment in ncache.c*/ /*----------------------------------------------------------------------------*/ /*----------------------------------------------------------------------------*/ @@ -51,7 +52,8 @@ struct ncache node_t * lru; /*the maximal number of nodes to cache*/ - int size_max; + /*int size_max;*/ + /*SEE ALSO the comment in ncache.c*/ /*the current length of the cache chain*/ int size_current; @@ -66,7 +68,8 @@ typedef struct ncache ncache_t; /*----------------------------------------------------------------------------*/ /*--------Global Variables----------------------------------------------------*/ /*The cache size (may be overwritten by the user)*/ -extern int cache_size; +/*extern int cache_size;*/ +/*SEE ALSO the comment in ncache.c*/ /*----------------------------------------------------------------------------*/ /*----------------------------------------------------------------------------*/ @@ -75,7 +78,8 @@ extern int cache_size; void ncache_init ( - int size_max + /*int size_max*/ + void ); /*----------------------------------------------------------------------------*/ /*Looks up the lnode and stores the result in `node`; creates a new entry @@ -87,7 +91,17 @@ ncache_node_lookup node_t ** node /*put the result here*/ ); /*----------------------------------------------------------------------------*/ +/*Removes the given node from the cache. Does not release the reference held + by the cache (for some further finalization actions on the node)*/ +/*Nodes will NOT be removed from the cache automatically*/ +void +ncache_node_remove + ( + node_t * node + ); +/*----------------------------------------------------------------------------*/ /*Resets the node cache*/ +/*No references to nodes are released*/ void ncache_reset(void); /*----------------------------------------------------------------------------*/ |