68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
/* - | Copyright | ------------------------------------------------------------
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Copyright (c) 2026 Randy Jordan
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is furnished to do
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so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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* --------------------------------------------------------------------------*/
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#ifndef CI2_ARENA_H
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#define CI2_ARENA_H
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#include "../ci2_platform.h"
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#include "../error/ci2_exception.h"
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enum
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{
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DEFAULT = 0, /* default: fail-handler (throws) + zero */
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SOFT_FAIL = 1u << 0, /* on failure return NULL */
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HARD_FAIL = 1u << 1, /* on failure call abort() */
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NO_ZERO = 1u << 2, /* do not zero memory on success */
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};
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struct Arena
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{
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char* beg;
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char* end;
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};
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typedef struct Arena Arena;
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/* Forward definition of an exception */
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CI2_API struct Exception arena_oom;
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/* Initialize an Arena from a buffer. */
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CI2_API void
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arena_init(struct Arena* a, void* buf, ptrdiff_t len);
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/* Dynamically allocate an Arena */
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CI2_API struct Arena
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arena_new(ptrdiff_t cap);
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/* Get the remaining capicity of an arena. */
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CI2_API ptrdiff_t
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arena_size(struct Arena a);
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/* Make an allocation from an Arena. */
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CI2_API void*
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arena_alloc(struct Arena* a,
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int flags,
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ptrdiff_t size,
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ptrdiff_t align,
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ptrdiff_t count);
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#endif // ci2_arena.h
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