44 lines
1.7 KiB
C
44 lines
1.7 KiB
C
/* Arena allocator for Hammer.
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* Copyright (C) 2012 Meredith L. Patterson, Dan "TQ" Hirsch
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef HAMMER_ALLOCATOR__H__
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#define HAMMER_ALLOCATOR__H__
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#include <sys/types.h>
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// TODO(thequux): Turn this into an "HAllocatorVtable", and add a wrapper that also takes an environment pointer.
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typedef struct HAllocator_ {
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void* (*alloc)(struct HAllocator_* allocator, size_t size);
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void* (*realloc)(struct HAllocator_* allocator, void* ptr, size_t size);
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void (*free)(struct HAllocator_* allocator, void* ptr);
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} HAllocator;
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typedef struct HArena_ HArena ; // hidden implementation
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HArena *h_new_arena(HAllocator* allocator, size_t block_size); // pass 0 for default...
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void* h_arena_malloc(HArena *arena, size_t count) __attribute__(( malloc, alloc_size(2) ));
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void h_arena_free(HArena *arena, void* ptr); // For future expansion, with alternate memory managers.
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void h_delete_arena(HArena *arena);
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typedef struct {
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size_t used;
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size_t wasted;
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} HArenaStats;
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void h_allocator_stats(HArena *arena, HArenaStats *stats);
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#endif // #ifndef LIB_ALLOCATOR__H__
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