diff options
author | Jason Hays <jason_hays22@mymail.eku.edu> | 2011-08-12 19:48:08 +0400 |
---|---|---|
committer | Jason Hays <jason_hays22@mymail.eku.edu> | 2011-08-12 19:48:08 +0400 |
commit | c57d64468bc9009a11cafdbf0cc66e83cdaa6841 (patch) | |
tree | 8f6544778c565b3c85042c976b6f12660f8af6d0 /source/blender/blenlib/intern/BLI_ghash.c | |
parent | c536a708f545d6ee212defc5fa8110b4c48a4da3 (diff) | |
parent | b374ab919a4b46d377d88ad0f1f1eced06621eca (diff) |
Merged 39257-39338
Diffstat (limited to 'source/blender/blenlib/intern/BLI_ghash.c')
-rw-r--r-- | source/blender/blenlib/intern/BLI_ghash.c | 92 |
1 files changed, 86 insertions, 6 deletions
diff --git a/source/blender/blenlib/intern/BLI_ghash.c b/source/blender/blenlib/intern/BLI_ghash.c index ff08ef4dba9..3c6a20b8ad6 100644 --- a/source/blender/blenlib/intern/BLI_ghash.c +++ b/source/blender/blenlib/intern/BLI_ghash.c @@ -49,8 +49,6 @@ unsigned int hashsizes[]= { /***/ -/***/ - GHash *BLI_ghash_new(GHashHashFP hashfp, GHashCmpFP cmpfp, const char *info) { GHash *gh= MEM_mallocN(sizeof(*gh), info); gh->hashfp= hashfp; @@ -67,14 +65,96 @@ GHash *BLI_ghash_new(GHashHashFP hashfp, GHashCmpFP cmpfp, const char *info) { return gh; } -#ifdef BLI_ghash_insert -#undef BLI_ghash_insert -#endif - int BLI_ghash_size(GHash *gh) { return gh->nentries; } +void BLI_ghash_insert(GHash *gh, void *key, void *val) { + unsigned int hash= gh->hashfp(key)%gh->nbuckets; + Entry *e= (Entry*) BLI_mempool_alloc(gh->entrypool); + + e->key= key; + e->val= val; + e->next= gh->buckets[hash]; + gh->buckets[hash]= e; + + if (++gh->nentries>(float)gh->nbuckets/2) { + Entry **old= gh->buckets; + int i, nold= gh->nbuckets; + + gh->nbuckets= hashsizes[++gh->cursize]; + gh->buckets= (Entry**)MEM_mallocN(gh->nbuckets*sizeof(*gh->buckets), "buckets"); + memset(gh->buckets, 0, gh->nbuckets*sizeof(*gh->buckets)); + + for (i=0; i<nold; i++) { + for (e= old[i]; e;) { + Entry *n= e->next; + + hash= gh->hashfp(e->key)%gh->nbuckets; + e->next= gh->buckets[hash]; + gh->buckets[hash]= e; + + e= n; + } + } + + MEM_freeN(old); + } +} + +void *BLI_ghash_lookup(GHash *gh, const void *key) { + if(gh) { + unsigned int hash= gh->hashfp(key)%gh->nbuckets; + Entry *e; + + for (e= gh->buckets[hash]; e; e= e->next) + if (gh->cmpfp(key, e->key)==0) + return e->val; + } + return NULL; +} + +int BLI_ghash_remove (GHash *gh, void *key, GHashKeyFreeFP keyfreefp, GHashValFreeFP valfreefp) +{ + unsigned int hash= gh->hashfp(key)%gh->nbuckets; + Entry *e; + Entry *p = NULL; + + for (e= gh->buckets[hash]; e; e= e->next) { + if (gh->cmpfp(key, e->key)==0) { + Entry *n= e->next; + + if (keyfreefp) keyfreefp(e->key); + if (valfreefp) valfreefp(e->val); + BLI_mempool_free(gh->entrypool, e); + + + e= n; + if (p) + p->next = n; + else + gh->buckets[hash] = n; + + --gh->nentries; + return 1; + } + p = e; + } + + return 0; +} + +int BLI_ghash_haskey(GHash *gh, void *key) { + unsigned int hash= gh->hashfp(key)%gh->nbuckets; + Entry *e; + + for (e= gh->buckets[hash]; e; e= e->next) + if (gh->cmpfp(key, e->key)==0) + return 1; + + return 0; +} + void BLI_ghash_free(GHash *gh, GHashKeyFreeFP keyfreefp, GHashValFreeFP valfreefp) { int i; |