2 * The UCW Library -- Resource Pools
4 * (c) 2008 Martin Mares <mj@ucw.cz>
6 * This software may be freely distributed and used according to the terms
7 * of the GNU Lesser General Public License.
12 * - check other candidates for resourcification
13 * - respool as a resource in another respool?
17 #ifndef _UCW_RESPOOL_H
18 #define _UCW_RESPOOL_H
20 #include "ucw/clists.h"
21 #include "ucw/threads.h"
26 struct mempool *mpool; // If set, resources are allocated from the mempool, otherwise by xmalloc()
31 struct respool *rpool;
32 const struct res_class *rclass;
33 void *priv; // Private to the class
38 void (*detach)(struct resource *r);
39 void (*free)(struct resource *r);
40 void (*dump)(struct resource *r);
41 uns res_size; // Size of the resource structure (0=default)
44 struct respool *rp_new(const char *name, struct mempool *mp);
45 void rp_delete(struct respool *rp);
46 void rp_dump(struct respool *rp);
48 static inline struct respool *
51 return ucwlib_thread_context()->current_respool; // May be NULL
54 static inline struct respool *
55 rp_switch(struct respool *rp)
57 struct ucwlib_context *ctx = ucwlib_thread_context();
58 struct respool *orp = ctx->current_respool;
59 ctx->current_respool = rp;
63 struct resource *res_alloc(const struct res_class *rc); // Returns NULL if there is no pool active
64 void res_drop(struct resource *r);
65 void res_detach(struct resource *r);
66 void res_free(struct resource *r);
67 void res_dump(struct resource *r);
69 static inline struct resource * // Returns NULL if there is no pool active
70 res_new(const struct res_class *rc, void *priv)
72 struct resource *r = res_alloc(rc);
81 /* Various special types of resources */
83 struct resource *res_for_fd(int fd); // Creates a resource that closes a given file descriptor
85 void *res_malloc(size_t size, struct resource **ptr); // Allocates memory and creates a resource for it
86 void *res_malloc_zero(size_t size, struct resource **ptr); // Allocates zero-initialized memory and creates a resource for it
87 void *res_realloc(struct resource *res, size_t size);