74 lines
1.6 KiB
C++
74 lines
1.6 KiB
C++
#include <sys/queue.h>
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struct Maat_garbage_bag
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{
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time_t create_time;
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int timeout;
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int ok_times;
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void *garbage;
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void (* garbage_free)(void *garbage);
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TAILQ_ENTRY(Maat_garbage_bag) entries;
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};
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TAILQ_HEAD(Maat_garbage_bag, Maat_garbage_q);
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struct Maat_garbage_bin
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{
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Maat_garbage_q garbage_q;
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size_t bag_cnt;
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int timeout_seconds;
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};
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struct Maat_garbage_bin* Maat_garbage_bin_new(int default_timeout)
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{
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struct Maat_garbage_bin* bin=ALLOC(struct Maat_garbage_bin, 1);
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TAILQ_INIT(bin->garbage_q);
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bin->timeout_seconds=default_timeout;
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return bin;
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}
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void Maat_garbage_bin_free(struct Maat_garbage_bin* bin)
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{
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struct Maat_garbage_bag* p=NULL;
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while (p=TAILQ_FIRST(&bin->garbage_q))
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{
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p->garbage_free(p->garbage);
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TAILQ_REMOVE(&bin->garbage_q, p, entries);
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free(p);
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}
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free(bin);
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return;
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}
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void Maat_garbage_bag(struct Maat_garbage_bin* bin, void* garbage, void (* func)(void *))
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{
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struct Maat_garbage_bag* bag=ALLOC( struct Maat_garbage_bag, 1);
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bag->create_time=time(NULL);
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bag->timeout=bin->timeout_seconds;
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bag->garbage=garbage;
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bag->garbage_free=func;
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TAILQ_INSERT_TAIL(&bin->garbage_q, bag, entries);
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bin->bag_cnt++;
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}
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void Maat_garbage_collect(struct Maat_garbage_bin* bin)
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{
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struct Maat_garbage_bag* p=NULL, *tmp=NULL;
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int n_clollected=0, n_bag=0;
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time_t now=time(NULL);
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for(p=TAILQ_FIRST(&bin->garbage_q); p!=NULL; p=tmp)
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{
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tmp=TAILQ_NEXT(p, entries);
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if(now-p->create_time>p->timeout)
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{
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p->garbage_free(p->garbage);
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TAILQ_REMOVE(&bin->garbage_q, p, entries);
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free(p);
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n_clollected++;
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}
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n_bag++;
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}
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assert(bin->bag_cnt==n_bag);
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bin->bag_cnt-=n_clollected;
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return;
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}
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