dbutils: comparison ucx/cx/array

-:5ea41679e15d
+:112b85020dc9
 #ifdef __cplusplus
 extern "C" {
 #endif
 /**
-* The maximum item size in an array list that fits into stack buffer
+* The maximum item size in an array list that fits into
-* when swapped.
+* a stack buffer when swapped.
 */
-cx_attr_export
+CX_EXPORT extern const unsigned cx_array_swap_sbo_size;
-extern const unsigned cx_array_swap_sbo_size;
 /**
 * Declares variables for an array that can be used with the convenience macros.
 *
 * @par Examples
 /** Array capacity. */ size_type name##_capacity
 /**
 * Declares variables for an array that can be used with the convenience macros.
 *
-* The size and capacity variables will have @c size_t type.
+* The size and capacity variables will have type @c size_t.
 * Use #CX_ARRAY_DECLARE_SIZED() to specify a different type.
 *
 * @par Examples
 * @code
 * // int array
 *
 *
 * const CxAllocator *al = // ...
 * cx_array_initialize_a(al, myarray, 128);
 * // ...
-* cxFree(al, myarray); // don't forget to free with same allocator
+* cxFree(al, myarray); // remember to free with the same allocator
 * @endcode
 *
 * @param allocator (@c CxAllocator*) the allocator
 * @param array the name of the array
 * @param capacity the initial capacity
 struct cx_array_reallocator_s {
 /**
 * Reallocates space for the given array.
 *
 * Implementations are not required to free the original array.
-* This allows reallocation of static memory by allocating heap memory
+* This allows reallocation of static or stack memory by allocating heap memory
-* and copying the array contents. The information in the custom fields of
+* and copying the array contents; namely when @c stack_ptr in this struct
-* the referenced allocator can be used to track the state of the memory
+* is not @c NULL and @p array equals @c stack_ptr.
-* or to transport other additional data.
 *
 * @param array the array to reallocate
 * @param old_capacity the old number of elements
 * @param new_capacity the new number of elements
 * @param elem_size the size of each element
 * @param alloc a reference to this allocator
 * @return a pointer to the reallocated memory or @c NULL on failure
 */
-cx_attr_nodiscard
+void *(*realloc)( void *array, size_t old_capacity, size_t new_capacity,
-cx_attr_nonnull_arg(5)
+size_t elem_size, struct cx_array_reallocator_s *alloc);
-cx_attr_allocsize(3, 4)
-void *(*realloc)(
-void *array,
-size_t old_capacity,
-size_t new_capacity,
-size_t elem_size,
-struct cx_array_reallocator_s *alloc
-);
 /**
-* Custom data pointer.
+* The allocator that shall be used for the reallocations.
 */
-void *ptr1;
+const CxAllocator *allocator;
 /**
-* Custom data pointer.
+* Optional pointer to stack memory
+* if the array is originally located on the stack.
 */
-void *ptr2;
+const void *stack_ptr;
-/**
-* Custom data integer.
-*/
-size_t int1;
-/**
-* Custom data integer.
-*/
-size_t int2;
 };
 /**
 * Typedef for the array reallocator struct.
 */
 typedef struct cx_array_reallocator_s CxArrayReallocator;
 /**
 * A default array reallocator that is based on the cxDefaultAllocator.
 */
-cx_attr_export
+CX_EXPORT extern CxArrayReallocator *cx_array_default_reallocator;
-extern CxArrayReallocator *cx_array_default_reallocator;
 /**
 * Creates a new array reallocator.
 *
 * When @p allocator is @c NULL, the cxDefaultAllocator will be used.
 *
-* When @p stackmem is not @c NULL, the reallocator is supposed to be used
+* When @p stack_ptr is not @c NULL, the reallocator is supposed to be used
-* @em only for the specific array that is initially located at @p stackmem.
+* @em only for the specific array initially located at @p stack_ptr.
-* When reallocation is needed, the reallocator checks, if the array is
+* When reallocation is needed, the reallocator checks if the array is
-* still located at @p stackmem and copies the contents to the heap.
+* still located at @p stack_ptr and copies the contents to the heap.
 *
-* @note Invoking this function with both arguments @c NULL will return a
+* @note Invoking this function with both arguments being @c NULL will return a
 * reallocator that behaves like #cx_array_default_reallocator.
 *
 * @param allocator the allocator this reallocator shall be based on
-* @param stackmem the address of the array when the array is initially located
+* @param stack_ptr the address of the array when the array is initially located
-* on the stack or shall not reallocated in place
+* on the stack or shall not reallocate in place
 * @return an array reallocator
 */
-cx_attr_export
+CX_EXPORT CxArrayReallocator cx_array_reallocator(
-CxArrayReallocator cx_array_reallocator(
+const struct cx_allocator_s *allocator, const void *stack_ptr);
-const struct cx_allocator_s *allocator,
-const void *stackmem
-);
 /**
 * Reserves memory for additional elements.
 *
 * This function checks if the @p capacity of the array is sufficient to hold
 * with one single cx_array_reserve() and then - after guaranteeing a
 * sufficient capacity - use simple memmove() or memcpy().
 *
 * The @p width in bytes refers to the size and capacity.
 * Both must have the same width.
-* Supported are 0, 1, 2, and 4, as well as 8 if running on a 64 bit
+* Supported are 0, 1, 2, and 4, as well as 8 if running on a 64-bit
 * architecture. If set to zero, the native word width is used.
+*
+* @note This function will reserve the minimum required capacity to hold
+* the additional elements and does not perform an overallocation.
 *
 * @param array a pointer to the target array
 * @param size a pointer to the size of the array
 * @param capacity a pointer to the capacity of the array
 * @param width the width in bytes for the @p size and @p capacity or zero for default
 * @retval zero success
 * @retval non-zero failure
 * @see cx_array_reallocator()
 */
 cx_attr_nonnull_arg(1, 2, 3)
-cx_attr_export
+CX_EXPORT int cx_array_reserve(void **array, void *size, void *capacity,
-int cx_array_reserve(
+unsigned width, size_t elem_size, size_t elem_count,
-void **array,
+CxArrayReallocator *reallocator);
-void *size,
-void *capacity,
-unsigned width,
-size_t elem_size,
-size_t elem_count,
-CxArrayReallocator *reallocator
-);
 /**
 * Copies elements from one array to another.
 *
 * The elements are copied to the @p target array at the specified @p index,
 * overwriting possible elements. The @p index does not need to be in range of
 * the current array @p size. If the new index plus the number of elements added
-* would extend the array's size, the remaining @p capacity is used.
+* extends the array's size, the remaining @p capacity is used.
 *
 * If the @p capacity is also insufficient to hold the new data, a reallocation
 * attempt is made with the specified @p reallocator.
 * You can create your own reallocator by hand, use #cx_array_default_reallocator,
 * or use the convenience function cx_array_reallocator() to create a custom reallocator.
 *
 * The @p width in bytes refers to the size and capacity.
 * Both must have the same width.
-* Supported are 0, 1, 2, and 4, as well as 8 if running on a 64 bit
+* Supported are 0, 1, 2, and 4, as well as 8 if running on a 64-bit
 * architecture. If set to zero, the native word width is used.
+*
+* @note When this function does reallocate the array, it may allocate more
+* space than required to avoid further allocations in the near future.
 *
 * @param target a pointer to the target array
 * @param size a pointer to the size of the target array
 * @param capacity a pointer to the capacity of the target array
 * @param width the width in bytes for the @p size and @p capacity or zero for default
 * @param reallocator the array reallocator to use
 * (@c NULL defaults to #cx_array_default_reallocator)
 * @retval zero success
 * @retval non-zero failure
 * @see cx_array_reallocator()
+* @see cx_array_reserve()
 */
 cx_attr_nonnull_arg(1, 2, 3, 6)
-cx_attr_export
+CX_EXPORT int cx_array_copy(void **target, void *size, void *capacity, unsigned width,
-int cx_array_copy(
+size_t index, const void *src, size_t elem_size, size_t elem_count,
-void **target,
+CxArrayReallocator *reallocator);
-void *size,
-void *capacity,
-unsigned width,
-size_t index,
-const void *src,
-size_t elem_size,
-size_t elem_count,
-CxArrayReallocator *reallocator
-);
 /**
 * Convenience macro that uses cx_array_copy() with a default layout and
 * the specified reallocator.
 *
 * (@c NULL defaults to #cx_array_default_reallocator)
 * @retval zero success
 * @retval non-zero failure
 */
 cx_attr_nonnull_arg(1, 2, 3, 5)
-cx_attr_export
+CX_EXPORT int cx_array_insert_sorted(void **target, size_t *size, size_t *capacity,
-int cx_array_insert_sorted(
+cx_compare_func cmp_func, const void *src, size_t elem_size, size_t elem_count,
-void **target,
+CxArrayReallocator *reallocator);
-size_t *size,
-size_t *capacity,
-cx_compare_func cmp_func,
-const void *src,
-size_t elem_size,
-size_t elem_count,
-CxArrayReallocator *reallocator
-);
 /**
 * Inserts an element into a sorted array.
 *
 * If the target array is not already sorted with respect
 * to the specified @p cmp_func, the behavior is undefined.
 *
-* If the capacity is insufficient to hold the new data, a reallocation
+* If the capacity is not enough to hold the new data, a reallocation
 * attempt is made.
 *
 * The \@ SIZE_TYPE is flexible and can be any unsigned integer type.
 * It is important, however, that @p size and @p capacity are pointers to
 * variables of the same type.
 * @see CX_ARRAY_DECLARE()
 * @see cx_array_simple_insert_sorted_a()
 */
 #define cx_array_simple_insert_sorted(array, src, n, cmp_func) \
 cx_array_simple_insert_sorted_a(NULL, array, src, n, cmp_func)
+/**
+* Inserts a sorted array into another sorted array, avoiding duplicates.
+*
+* If either the target or the source array is not already sorted with respect
+* to the specified @p cmp_func, the behavior is undefined.
+*
+* If the capacity is insufficient to hold the new data, a reallocation
+* attempt is made.
+* You can create your own reallocator by hand, use #cx_array_default_reallocator,
+* or use the convenience function cx_array_reallocator() to create a custom reallocator.
+*
+* @param target a pointer to the target array
+* @param size a pointer to the size of the target array
+* @param capacity a pointer to the capacity of the target array
+* @param cmp_func the compare function for the elements
+* @param src the source array
+* @param elem_size the size of one element
+* @param elem_count the number of elements to insert
+* @param reallocator the array reallocator to use
+* (@c NULL defaults to #cx_array_default_reallocator)
+* @retval zero success
+* @retval non-zero failure
+*/
+cx_attr_nonnull_arg(1, 2, 3, 5)
+CX_EXPORT int cx_array_insert_unique(void **target, size_t *size, size_t *capacity,
+cx_compare_func cmp_func, const void *src, size_t elem_size, size_t elem_count,
+CxArrayReallocator *reallocator);
+/**
+* Inserts an element into a sorted array if it does not exist.
+*
+* If the target array is not already sorted with respect
+* to the specified @p cmp_func, the behavior is undefined.
+*
+* If the capacity is insufficient to hold the new data, a reallocation
+* attempt is made.
+*
+* The \@ SIZE_TYPE is flexible and can be any unsigned integer type.
+* It is important, however, that @p size and @p capacity are pointers to
+* variables of the same type.
+*
+* @param target (@c void**) a pointer to the target array
+* @param size (@c SIZE_TYPE*) a pointer to the size of the target array
+* @param capacity (@c SIZE_TYPE*) a pointer to the capacity of the target array
+* @param elem_size (@c size_t) the size of one element
+* @param elem (@c void*) a pointer to the element to add
+* @param cmp_func (@c cx_cmp_func) the compare function for the elements
+* @param reallocator (@c CxArrayReallocator*) the array reallocator to use
+* @retval zero success (also when the element was already present)
+* @retval non-zero failure
+*/
+#define cx_array_add_unique(target, size, capacity, elem_size, elem, cmp_func, reallocator) \
+cx_array_insert_unique((void**)(target), size, capacity, cmp_func, elem, elem_size, 1, reallocator)
+/**
+* Convenience macro for cx_array_add_unique() with a default
+* layout and the specified reallocator.
+*
+* @param reallocator (@c CxArrayReallocator*) the array reallocator to use
+* @param array the name of the array (NOT a pointer or alias to the array)
+* @param elem the element to add (NOT a pointer, address is automatically taken)
+* @param cmp_func (@c cx_cmp_func) the compare function for the elements
+* @retval zero success
+* @retval non-zero failure
+* @see CX_ARRAY_DECLARE()
+* @see cx_array_simple_add_unique()
+*/
+#define cx_array_simple_add_unique_a(reallocator, array, elem, cmp_func) \
+cx_array_add_unique(&array, &(array##_size), &(array##_capacity), \
+sizeof((array)[0]), &(elem), cmp_func, reallocator)
+/**
+* Convenience macro for cx_array_add_unique() with a default
+* layout and the default reallocator.
+*
+* @param array the name of the array (NOT a pointer or alias to the array)
+* @param elem the element to add (NOT a pointer, address is automatically taken)
+* @param cmp_func (@c cx_cmp_func) the compare function for the elements
+* @retval zero success
+* @retval non-zero failure
+* @see CX_ARRAY_DECLARE()
+* @see cx_array_simple_add_unique_a()
+*/
+#define cx_array_simple_add_unique(array, elem, cmp_func) \
+cx_array_simple_add_unique_a(NULL, array, elem, cmp_func)
+/**
+* Convenience macro for cx_array_insert_unique() with a default
+* layout and the specified reallocator.
+*
+* @param reallocator (@c CxArrayReallocator*) the array reallocator to use
+* @param array the name of the array (NOT a pointer or alias to the array)
+* @param src (@c void*) pointer to the source array
+* @param n (@c size_t) number of elements in the source array
+* @param cmp_func (@c cx_cmp_func) the compare function for the elements
+* @retval zero success
+* @retval non-zero failure
+* @see CX_ARRAY_DECLARE()
+* @see cx_array_simple_insert_unique()
+*/
+#define cx_array_simple_insert_unique_a(reallocator, array, src, n, cmp_func) \
+cx_array_insert_unique((void**)(&array), &(array##_size), &(array##_capacity), \
+cmp_func, src, sizeof((array)[0]), n, reallocator)
+/**
+* Convenience macro for cx_array_insert_unique() with a default
+* layout and the default reallocator.
+*
+* @param array the name of the array (NOT a pointer or alias to the array)
+* @param src (@c void*) pointer to the source array
+* @param n (@c size_t) number of elements in the source array
+* @param cmp_func (@c cx_cmp_func) the compare function for the elements
+* @retval zero success
+* @retval non-zero failure
+* @see CX_ARRAY_DECLARE()
+* @see cx_array_simple_insert_unique_a()
+*/
+#define cx_array_simple_insert_unique(array, src, n, cmp_func) \
+cx_array_simple_insert_unique_a(NULL, array, src, n, cmp_func)
 /**
 * Searches the largest lower bound in a sorted array.
 *
 * In other words, this function returns the index of the largest element
 * @return the index of the largest lower bound, or @p size
 * @see cx_array_binary_search_sup()
 * @see cx_array_binary_search()
 */
 cx_attr_nonnull
-cx_attr_export
+CX_EXPORT size_t cx_array_binary_search_inf(const void *arr, size_t size,
-size_t cx_array_binary_search_inf(
+size_t elem_size, const void *elem, cx_compare_func cmp_func);
-const void *arr,
-size_t size,
-size_t elem_size,
-const void *elem,
-cx_compare_func cmp_func
-);
 /**
 * Searches an item in a sorted array.
 *
 * If the array is not sorted with respect to the @p cmp_func, the behavior
 * cannot be found
 * @see cx_array_binary_search_inf()
 * @see cx_array_binary_search_sup()
 */
 cx_attr_nonnull
-cx_attr_export
+CX_EXPORT size_t cx_array_binary_search(const void *arr, size_t size,
-size_t cx_array_binary_search(
+size_t elem_size, const void *elem, cx_compare_func cmp_func);
-const void *arr,
-size_t size,
-size_t elem_size,
-const void *elem,
-cx_compare_func cmp_func
-);
 /**
 * Searches the smallest upper bound in a sorted array.
 *
 * In other words, this function returns the index of the smallest element
 * @return the index of the smallest upper bound, or @p size
 * @see cx_array_binary_search_inf()
 * @see cx_array_binary_search()
 */
 cx_attr_nonnull
-cx_attr_export
+CX_EXPORT size_t cx_array_binary_search_sup(const void *arr, size_t size,
-size_t cx_array_binary_search_sup(
+size_t elem_size, const void *elem, cx_compare_func cmp_func);
-const void *arr,
-size_t size,
-size_t elem_size,
-const void *elem,
-cx_compare_func cmp_func
-);
 /**
 * Swaps two array elements.
 *
 * @param arr the array
 * @param elem_size the element size
-* @param idx1 index of first element
+* @param idx1 index of the first element
-* @param idx2 index of second element
+* @param idx2 index of the second element
 */
 cx_attr_nonnull
-cx_attr_export
+CX_EXPORT void cx_array_swap(void *arr, size_t elem_size, size_t idx1, size_t idx2);
-void cx_array_swap(
-void *arr,
-size_t elem_size,
-size_t idx1,
-size_t idx2
-);
 /**
 * Allocates an array list for storing elements with @p elem_size bytes each.
 *
 * If @p elem_size is #CX_STORE_POINTERS, the created list stores pointers instead of
-* copies of the added elements and the compare function will be automatically set
+* copies of the added elements, and the compare function will be automatically set
 * to cx_cmp_ptr(), if none is given.
 *
 * @param allocator the allocator for allocating the list memory
 * (if @c NULL, the cxDefaultAllocator will be used)
 * @param comparator the comparator for the elements
 * @return the created list
 */
 cx_attr_nodiscard
 cx_attr_malloc
 cx_attr_dealloc(cxListFree, 1)
-cx_attr_export
+CX_EXPORT CxList *cxArrayListCreate(const CxAllocator *allocator,
-CxList *cxArrayListCreate(
+cx_compare_func comparator, size_t elem_size, size_t initial_capacity);
-const CxAllocator *allocator,
-cx_compare_func comparator,
-size_t elem_size,
-size_t initial_capacity
-);
 /**
 * Allocates an array list for storing elements with @p elem_size bytes each.
 *
 * The list will use the cxDefaultAllocator and @em NO compare function.

comparison: ucx/cx/array_list.h

ucx/cx/array_list.h

Mercurial > hg > dbutils / file comparison

comparison: ucx/cx/array_list.h

ucx/cx/array_list.h