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190 lines
4.1 KiB
C
190 lines
4.1 KiB
C
/*
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* Copyright (c) 2000-2001, 2003 Proofpoint, Inc. and its suppliers.
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* All rights reserved.
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the sendmail distribution.
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*
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* $Id: rpool.h,v 1.17 2013-11-22 20:51:31 ca Exp $
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*/
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/*
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** libsm resource pools
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** See libsm/rpool.html for documentation.
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*/
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#ifndef SM_RPOOL_H
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# define SM_RPOOL_H
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# include <sm/gen.h>
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# include <sm/heap.h>
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# include <sm/string.h>
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/*
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** Each memory pool object consists of an SM_POOLLINK_T,
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** followed by a platform specific amount of padding,
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** followed by 'poolsize' bytes of pool data,
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** where 'poolsize' is the value of rpool->sm_poolsize at the time
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** the pool is allocated.
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*/
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typedef struct sm_poollink SM_POOLLINK_T;
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struct sm_poollink
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{
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SM_POOLLINK_T *sm_pnext;
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};
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typedef void (*SM_RPOOL_RFREE_T) __P((void *_rcontext));
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typedef SM_RPOOL_RFREE_T *SM_RPOOL_ATTACH_T;
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typedef struct sm_resource SM_RESOURCE_T;
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struct sm_resource
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{
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/*
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** Function for freeing this resource. It may be NULL,
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** meaning that this resource has already been freed.
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*/
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SM_RPOOL_RFREE_T sm_rfree;
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void *sm_rcontext; /* resource data */
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};
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# define SM_RLIST_MAX 511
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typedef struct sm_rlist SM_RLIST_T;
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struct sm_rlist
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{
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SM_RESOURCE_T sm_rvec[SM_RLIST_MAX];
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SM_RLIST_T *sm_rnext;
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};
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typedef struct
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{
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/* Points to SmRpoolMagic, or is NULL if rpool is freed. */
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const char *sm_magic;
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/*
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** If this rpool object has no parent, then sm_parentlink
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** is NULL. Otherwise, we set *sm_parentlink = NULL
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** when this rpool is freed, so that it isn't freed a
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** second time when the parent is freed.
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*/
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SM_RPOOL_RFREE_T *sm_parentlink;
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/*
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** Memory pools
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*/
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/* Size of the next pool to be allocated, not including the header. */
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size_t sm_poolsize;
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/*
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** If an sm_rpool_malloc_x request is too big to fit
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** in the current pool, and the request size > bigobjectsize,
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** then the object will be given its own malloc'ed block.
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** sm_bigobjectsize <= sm_poolsize. The maximum wasted space
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** at the end of a pool is maxpooledobjectsize - 1.
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*/
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size_t sm_bigobjectsize;
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/* Points to next free byte in the current pool. */
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char *sm_poolptr;
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/*
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** Number of bytes available in the current pool.
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** Initially 0. Set to 0 by sm_rpool_free.
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*/
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size_t sm_poolavail;
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/* Linked list of memory pools. Initially NULL. */
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SM_POOLLINK_T *sm_pools;
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/*
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** Resource lists
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*/
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SM_RESOURCE_T *sm_rptr; /* Points to next free resource slot. */
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/*
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** Number of available resource slots in current list.
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** Initially 0. Set to 0 by sm_rpool_free.
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*/
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size_t sm_ravail;
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/* Linked list of resource lists. Initially NULL. */
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SM_RLIST_T *sm_rlists;
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#if _FFR_PERF_RPOOL
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int sm_nbigblocks;
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int sm_npools;
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#endif /* _FFR_PERF_RPOOL */
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} SM_RPOOL_T;
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extern SM_RPOOL_T *
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sm_rpool_new_x __P((
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SM_RPOOL_T *_parent));
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extern void
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sm_rpool_free __P((
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SM_RPOOL_T *_rpool));
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# if SM_HEAP_CHECK
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extern void *
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sm_rpool_malloc_tagged_x __P((
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SM_RPOOL_T *_rpool,
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size_t _size,
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char *_file,
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int _line,
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int _group));
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# define sm_rpool_malloc_x(rpool, size) \
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sm_rpool_malloc_tagged_x(rpool, size, __FILE__, __LINE__, SmHeapGroup)
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extern void *
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sm_rpool_malloc_tagged __P((
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SM_RPOOL_T *_rpool,
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size_t _size,
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char *_file,
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int _line,
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int _group));
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# define sm_rpool_malloc(rpool, size) \
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sm_rpool_malloc_tagged(rpool, size, __FILE__, __LINE__, SmHeapGroup)
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# else /* SM_HEAP_CHECK */
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extern void *
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sm_rpool_malloc_x __P((
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SM_RPOOL_T *_rpool,
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size_t _size));
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extern void *
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sm_rpool_malloc __P((
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SM_RPOOL_T *_rpool,
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size_t _size));
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# endif /* SM_HEAP_CHECK */
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#if DO_NOT_USE_STRCPY
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extern char *sm_rpool_strdup_x __P((SM_RPOOL_T *rpool, const char *s));
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#else /* DO_NOT_USE_STRCPY */
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# define sm_rpool_strdup_x(rpool, str) \
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strcpy(sm_rpool_malloc_x(rpool, strlen(str) + 1), str)
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#endif /* DO_NOT_USE_STRCPY */
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extern SM_RPOOL_ATTACH_T
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sm_rpool_attach_x __P((
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SM_RPOOL_T *_rpool,
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SM_RPOOL_RFREE_T _rfree,
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void *_rcontext));
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# define sm_rpool_detach(a) ((void)(*(a) = NULL))
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extern void
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sm_rpool_setsizes __P((
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SM_RPOOL_T *_rpool,
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size_t _poolsize,
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size_t _bigobjectsize));
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#endif /* ! SM_RPOOL_H */
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