68 lines
989 B
C
68 lines
989 B
C
#include <u.h>
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#include <libc.h>
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#include "git.h"
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void
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osinit(Objset *s)
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{
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s->sz = 16;
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s->nobj = 0;
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s->obj = eamalloc(s->sz, sizeof(Hash));
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}
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void
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osclear(Objset *s)
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{
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free(s->obj);
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}
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void
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osadd(Objset *s, Object *o)
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{
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u32int probe;
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Object **obj;
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int i, sz;
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probe = GETBE32(o->hash.h) % s->sz;
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while(s->obj[probe]){
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if(hasheq(&s->obj[probe]->hash, &o->hash)){
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s->obj[probe] = o;
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return;
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}
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probe = (probe + 1) % s->sz;
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}
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assert(s->obj[probe] == nil);
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s->obj[probe] = o;
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s->nobj++;
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if(s->sz < 2*s->nobj){
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sz = s->sz;
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obj = s->obj;
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s->sz *= 2;
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s->nobj = 0;
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s->obj = eamalloc(s->sz, sizeof(Hash));
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for(i = 0; i < sz; i++)
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if(obj[i])
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osadd(s, obj[i]);
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free(obj);
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}
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}
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Object*
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osfind(Objset *s, Hash h)
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{
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u32int probe;
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for(probe = GETBE32(h.h) % s->sz; s->obj[probe]; probe = (probe + 1) % s->sz)
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if(hasheq(&s->obj[probe]->hash, &h))
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return s->obj[probe];
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return 0;
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}
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int
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oshas(Objset *s, Hash h)
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{
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return osfind(s, h) != nil;
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}
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