47 lines
2.2 KiB
C
47 lines
2.2 KiB
C
// vim:fileencoding=utf-8:foldmethod=marker
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#ifndef MEM_ARENA_ALLOCATOR_H
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#define MEM_ARENA_ALLOCATOR_H
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#include "../../mem/mem_os.h"
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#include "../../../common/aliases/aliases.h"
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#include "../../../common/platform/platform.h"
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#include "../../../base/mem/allocator/mem_allocator.h"
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#ifdef WAPP_PLATFORM_CPP
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BEGIN_C_LINKAGE
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#endif // !WAPP_PLATFORM_CPP
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#define wapp_mem_arena_allocator_init(base_capacity) \
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(wapp_mem_arena_allocator_init_custom(base_capacity, WAPP_MEM_ALLOC_RESERVE, false))
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#define wapp_mem_arena_allocator_init_commit(base_capacity) \
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(wapp_mem_arena_allocator_init_custom(base_capacity, WAPP_MEM_ALLOC_RESERVE | WAPP_MEM_ALLOC_COMMIT, false))
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#define wapp_mem_arena_allocator_init_zero(base_capacity) \
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(wapp_mem_arena_allocator_init_custom(base_capacity, WAPP_MEM_ALLOC_RESERVE, true))
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#define wapp_mem_arena_allocator_init_commit_and_zero(base_capacity) \
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(wapp_mem_arena_allocator_init_custom(base_capacity, WAPP_MEM_ALLOC_RESERVE | WAPP_MEM_ALLOC_COMMIT, true))
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/**
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* Wraps an Arena in an Allocator object. It attempts to initialise the Arena
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* and, if successful, defines the operations supported by it to be used by the
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* Allocator.
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*
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* An Arena allocator only supports normal allocation and aligned allocation.
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* Reallocation, aligned reallocation and freeing aren't implemented.
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*
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* The `wapp_mem_arena_allocator_init_custom` provides the most control over how
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* the Arena is initialised. Wrapper macros are provided for easier use.
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*/
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Allocator wapp_mem_arena_allocator_init_custom(u64 base_capacity, MemAllocFlags flags, b8 zero_buffer);
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Allocator wapp_mem_arena_allocator_init_with_buffer(u8 *buffer, u64 buffer_size);
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void wapp_mem_arena_allocator_temp_begin(const Allocator *allocator);
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void wapp_mem_arena_allocator_temp_end(const Allocator *allocator);
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void wapp_mem_arena_allocator_clear(Allocator *allocator);
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void wapp_mem_arena_allocator_destroy(Allocator *allocator);
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#ifdef WAPP_PLATFORM_CPP
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END_C_LINKAGE
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#endif // !WAPP_PLATFORM_CPP
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#endif // !MEM_ARENA_ALLOCATOR_H
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