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Diffstat (limited to '')
| -rw-r--r-- | lib/ngtcp2_objalloc.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/lib/ngtcp2_objalloc.h b/lib/ngtcp2_objalloc.h new file mode 100644 index 0000000..f1bbd3a --- /dev/null +++ b/lib/ngtcp2_objalloc.h @@ -0,0 +1,140 @@ +/* + * 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_def(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) { \ + 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); \ + } \ + \ + inline static 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); \ + } \ + \ + inline static void ngtcp2_objalloc_##NAME##_release( \ + ngtcp2_objalloc *objalloc, TYPE *obj) { \ + ngtcp2_opl_push(&objalloc->opl, &obj->OPLENTFIELD); \ + } +#else /* NOMEMPOOL */ +# define ngtcp2_objalloc_def(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); \ + } +#endif /* NOMEMPOOL */ + +#endif /* NGTCP2_OBJALLOC_H */ |