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/*
* ngtcp2
*
* Copyright (c) 2022 ngtcp2 contributors
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef NGTCP2_OBJALLOC_H
#define NGTCP2_OBJALLOC_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <ngtcp2/ngtcp2.h>
#include "ngtcp2_balloc.h"
#include "ngtcp2_opl.h"
#include "ngtcp2_macro.h"
#include "ngtcp2_mem.h"
/*
* ngtcp2_objalloc combines ngtcp2_balloc and ngtcp2_opl, and provides
* an object pool with the custom allocator to reduce the allocation
* and deallocation overheads for small objects.
*/
typedef struct ngtcp2_objalloc {
ngtcp2_balloc balloc;
ngtcp2_opl opl;
} ngtcp2_objalloc;
/*
* ngtcp2_objalloc_init initializes |objalloc|. |blklen| is directly
* passed to ngtcp2_balloc_init.
*/
void ngtcp2_objalloc_init(ngtcp2_objalloc *objalloc, size_t blklen,
const ngtcp2_mem *mem);
/*
* ngtcp2_objalloc_free releases all allocated resources.
*/
void ngtcp2_objalloc_free(ngtcp2_objalloc *objalloc);
/*
* ngtcp2_objalloc_clear releases all allocated resources and
* initializes its state.
*/
void ngtcp2_objalloc_clear(ngtcp2_objalloc *objalloc);
#ifndef NOMEMPOOL
# define ngtcp2_objalloc_decl(NAME, TYPE, OPLENTFIELD) \
inline static void ngtcp2_objalloc_##NAME##_init( \
ngtcp2_objalloc *objalloc, size_t nmemb, const ngtcp2_mem *mem) { \
ngtcp2_objalloc_init( \
objalloc, ((sizeof(TYPE) + 0xfu) & ~(uintptr_t)0xfu) * nmemb, mem); \
} \
\
TYPE *ngtcp2_objalloc_##NAME##_get(ngtcp2_objalloc *objalloc); \
\
TYPE *ngtcp2_objalloc_##NAME##_len_get(ngtcp2_objalloc *objalloc, \
size_t len); \
\
inline static void ngtcp2_objalloc_##NAME##_release( \
ngtcp2_objalloc *objalloc, TYPE *obj) { \
ngtcp2_opl_push(&objalloc->opl, &obj->OPLENTFIELD); \
}
# define ngtcp2_objalloc_def(NAME, TYPE, OPLENTFIELD) \
TYPE *ngtcp2_objalloc_##NAME##_get(ngtcp2_objalloc *objalloc) { \
ngtcp2_opl_entry *oplent = ngtcp2_opl_pop(&objalloc->opl); \
TYPE *obj; \
int rv; \
\
if (!oplent) { \
rv = \
ngtcp2_balloc_get(&objalloc->balloc, (void **)&obj, sizeof(TYPE)); \
if (rv != 0) { \
return NULL; \
} \
\
return obj; \
} \
\
return ngtcp2_struct_of(oplent, TYPE, OPLENTFIELD); \
} \
\
TYPE *ngtcp2_objalloc_##NAME##_len_get(ngtcp2_objalloc *objalloc, \
size_t len) { \
ngtcp2_opl_entry *oplent = ngtcp2_opl_pop(&objalloc->opl); \
TYPE *obj; \
int rv; \
\
if (!oplent) { \
rv = ngtcp2_balloc_get(&objalloc->balloc, (void **)&obj, len); \
if (rv != 0) { \
return NULL; \
} \
\
return obj; \
} \
\
return ngtcp2_struct_of(oplent, TYPE, OPLENTFIELD); \
}
#else /* NOMEMPOOL */
# define ngtcp2_objalloc_decl(NAME, TYPE, OPLENTFIELD) \
inline static void ngtcp2_objalloc_##NAME##_init( \
ngtcp2_objalloc *objalloc, size_t nmemb, const ngtcp2_mem *mem) { \
ngtcp2_objalloc_init( \
objalloc, ((sizeof(TYPE) + 0xfu) & ~(uintptr_t)0xfu) * nmemb, mem); \
} \
\
inline static TYPE *ngtcp2_objalloc_##NAME##_get( \
ngtcp2_objalloc *objalloc) { \
return ngtcp2_mem_malloc(objalloc->balloc.mem, sizeof(TYPE)); \
} \
\
inline static TYPE *ngtcp2_objalloc_##NAME##_len_get( \
ngtcp2_objalloc *objalloc, size_t len) { \
return ngtcp2_mem_malloc(objalloc->balloc.mem, len); \
} \
\
inline static void ngtcp2_objalloc_##NAME##_release( \
ngtcp2_objalloc *objalloc, TYPE *obj) { \
ngtcp2_mem_free(objalloc->balloc.mem, obj); \
}
# define ngtcp2_objalloc_def(NAME, TYPE, OPLENTFIELD)
#endif /* NOMEMPOOL */
#endif /* NGTCP2_OBJALLOC_H */
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