62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
// vim:fileencoding=utf-8:foldmethod=marker
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#ifndef MEM_ALLOCATOR_H
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#define MEM_ALLOCATOR_H
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#include "../../../common/aliases/aliases.h"
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#include "../../../common/platform/platform.h"
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#include <string.h>
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#ifdef WP_PLATFORM_CPP
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BEGIN_C_LINKAGE
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#endif // !WP_PLATFORM_CPP
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typedef enum WpMemOp {
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WP_MEM_OP_ALLOC,
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WP_MEM_OP_ALLOC_ALIGNED,
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WP_MEM_OP_REALLOC,
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WP_MEM_OP_REALLOC_ALIGNED,
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WP_MEM_OP_FREE,
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COUNT_MEM_OPS
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} WpMemOp;
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typedef void *(WpMemAllocFunc)(u64 size, void *alloc_obj);
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typedef void *(WpMemAllocAlignedFunc)(u64 size, u64 alignment, void *alloc_obj);
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typedef void *(WpMemReallocFunc)(void *ptr, u64 old_size, u64 new_size, void *alloc_obj);
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typedef void *(WpMemReallocAlignedFunc)(void *ptr, u64 old_size, u64 new_size, u64 alignment, void *alloc_obj);
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typedef void (WpMemFreeFunc)(void **ptr, u64 size, void *alloc_obj);
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typedef struct WpAllocator WpAllocator;
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struct WpAllocator {
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void *obj;
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WpMemAllocFunc *alloc;
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WpMemAllocAlignedFunc *alloc_aligned;
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WpMemReallocFunc *realloc;
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WpMemReallocAlignedFunc *realloc_aligned;
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WpMemFreeFunc *free;
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};
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#ifdef WP_PLATFORM_CPP
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#define wpMemAllocatorInvalid(ALLOCATOR) ([&]() { \
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WpAllocator alloc{}; \
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return memcmp(ALLOCATOR, &alloc, sizeof(WpAllocator)) == 0; \
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}())
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#else
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#define wpMemAllocatorInvalid(ALLOCATOR) (memcmp(ALLOCATOR, &((WpAllocator){0}), sizeof(WpAllocator)) == 0)
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#endif // !WP_PLATFORM_CPP
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void *wpMemAllocatorAlloc(const WpAllocator *allocator, u64 size);
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void *wpMemAllocatorAllocAligned(const WpAllocator *allocator, u64 size, u64 alignment);
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void *wpMemAllocatorRealloc(const WpAllocator *allocator, void *ptr, u64 old_size, u64 new_size);
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void *wpMemAllocatorReallocAligned(const WpAllocator *allocator, void *ptr, u64 old_size,
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u64 new_size, u64 alignment);
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void wpMemAllocatorFree(const WpAllocator *allocator, void **ptr, u64 size);
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b8 wpMemAllocatorOpSupported(const WpAllocator *allocator, WpMemOp op);
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#ifdef WP_PLATFORM_CPP
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END_C_LINKAGE
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#endif // !WP_PLATFORM_CPP
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#endif // !MEM_ALLOCATOR_H
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