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18a5c89c97
This is one of the steps we need in the process of providing a similar interface for thread creation which can be found in the mainstream operating systems like Linux.
31 lines
788 B
C
31 lines
788 B
C
#ifndef __IDPOOL_H__
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#define __IDPOOL_H__
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#include <bit.h>
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#include <string.h>
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#include INC_GLUE(memory.h)
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struct id_pool {
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int nwords;
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int bitlimit;
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u32 bitmap[];
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};
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/* Copy one id pool to another by calculating its size */
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static inline void id_pool_copy(struct id_pool *to, struct id_pool *from, int totalbits)
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{
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int nwords = BITWISE_GETWORD(totalbits);
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memcpy(to, from, nwords * SZ_WORD + sizeof(struct id_pool));
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}
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struct id_pool *id_pool_new_init(int mapsize);
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int id_new(struct id_pool *pool);
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int id_del(struct id_pool *pool, int id);
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int id_get(struct id_pool *pool, int id);
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int id_is_empty(struct id_pool *pool);
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int ids_new_contiguous(struct id_pool *pool, int numids);
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int ids_del_contiguous(struct id_pool *pool, int first, int numids);
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#endif /* __IDPOOL_H__ */
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