103 lines
4.7 KiB
C
103 lines
4.7 KiB
C
#ifndef APFL_ALLOC_H
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#define APFL_ALLOC_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stddef.h>
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#define ALLOCATOR_CALL(a, oldptr, oldsize, newsize) \
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((a).alloc((a).opaque, (oldptr), (oldsize), (newsize)))
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#define ALLOC_BYTES(a, n) (((n) == 0) ? NULL : ALLOCATOR_CALL(a, NULL, 0, (n)))
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#define REALLOC_BYTES(a, ptr, old, new) ALLOCATOR_CALL(a, ptr, old, new)
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#define FREE_BYTES(a, ptr, n) ALLOCATOR_CALL(a, ptr, n, 0)
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#define REALLOC_LIST(a, ptr, old, new) REALLOC_BYTES(a, ptr, sizeof(*ptr) * (old), sizeof(*ptr) * (new))
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#define ALLOC_LIST(a, T, len) (T *)ALLOC_BYTES(a, sizeof(T) * (len))
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#define FREE_LIST(a, ptr, len) FREE_BYTES(a, ptr, sizeof(*ptr) * (len))
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#define ALLOC_OBJ(a, T) ALLOC_LIST(a, T, 1)
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#define FREE_OBJ(a, ptr) FREE_LIST(a, ptr, 1)
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#define DEINIT_CAP_LIST(allocator, items, len, cap, item_deinit) \
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do { \
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if ((items) == NULL) { \
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break; \
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} \
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for (size_t i = 0; i < (len); i++) { \
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item_deinit(allocator, &((items)[i])); \
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} \
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FREE_LIST(allocator, items, cap); \
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len = 0; \
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cap = 0; \
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(items) = NULL; \
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} while(0)
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#define DEINIT_LIST(allocator, items, len, item_deinit) \
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do { \
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if ((items) == NULL) { \
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break; \
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} \
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for (size_t i = 0; i < (len); i++) { \
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item_deinit(allocator, &((items)[i])); \
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} \
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FREE_LIST(allocator, items, len); \
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len = 0; \
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(items) = NULL; \
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} while(0)
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#define DEINIT_LIST_WITH_ARGS(allocator, items, len, item_deinit, ...) \
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do { \
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if ((items) == NULL) { \
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break; \
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} \
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for (size_t i = 0; i < (len); i++) { \
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item_deinit(__VA_ARGS__, &((items)[i])); \
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} \
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FREE_LIST(allocator, items, len); \
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len = 0; \
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(items) = NULL; \
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} while(0)
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#define DEINIT_CAP_LIST_WITH_ARGS(allocator, items, len, cap, item_deinit, ...) \
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do { \
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if ((items) == NULL) { \
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break; \
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} \
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for (size_t i = 0; i < (len); i++) { \
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item_deinit(__VA_ARGS__, &((items)[i])); \
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} \
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FREE_LIST(allocator, items, cap); \
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len = 0; \
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cap = 0; \
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(items) = NULL; \
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} while(0)
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#define MOVEPTR(out, in) \
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do { \
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out = in; \
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in = NULL; \
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} while(0)
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// DESTROY destroys a dynamically allocated value.
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// It will first deinit the value using deiniter,
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// free the memory and then set the variable to NULL.
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// It is always allowed to destroy an already destroyed
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// or deinited value.
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#define DESTROY(allocator, var, deiniter) \
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do { \
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if ((var) == NULL) { \
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break; \
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} \
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deiniter(allocator, var); \
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FREE_OBJ(allocator, var); \
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(var) = NULL; \
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} while(0)
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#ifdef __cplusplus
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}
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#endif
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#endif
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