g_ptr_array_new ()

GPtrArray *
g_ptr_array_new (void);

Creates a new GPtrArray with a reference count of 1.

g_ptr_array_sized_new ()

GPtrArray *
g_ptr_array_sized_new (guint reserved_size);

Creates a new GPtrArray with reserved_size pointers preallocated and a reference count of 1. This avoids frequent reallocation, if you are going to add many pointers to the array. Note however that the size of the array is still 0.

g_ptr_array_new_with_free_func ()

GPtrArray *
g_ptr_array_new_with_free_func (GDestroyNotify element_free_func);

Creates a new GPtrArray with a reference count of 1 and use element_free_func for freeing each element when the array is destroyed either via g_ptr_array_unref(), when g_ptr_array_free() is called with free_segment set to TRUE or when removing elements.

Since: 2.22

g_ptr_array_new_full ()

GPtrArray *
g_ptr_array_new_full (guint reserved_size,
                      GDestroyNotify element_free_func);

Creates a new GPtrArray with reserved_size pointers preallocated and a reference count of 1. This avoids frequent reallocation, if you are going to add many pointers to the array. Note however that the size of the array is still 0. It also set element_free_func for freeing each element when the array is destroyed either via g_ptr_array_unref(), when g_ptr_array_free() is called with free_segment set to TRUE or when removing elements.

Since: 2.30

g_ptr_array_set_free_func ()

void
g_ptr_array_set_free_func (GPtrArray *array,
                           GDestroyNotify element_free_func);

Sets a function for freeing each element when array is destroyed either via g_ptr_array_unref(), when g_ptr_array_free() is called with free_segment set to TRUE or when removing elements.

Since: 2.22

g_ptr_array_ref ()

GPtrArray *
g_ptr_array_ref (GPtrArray *array);

Atomically increments the reference count of array by one. This function is thread-safe and may be called from any thread.

Since: 2.22

g_ptr_array_unref ()

void
g_ptr_array_unref (GPtrArray *array);

Atomically decrements the reference count of array by one. If the reference count drops to 0, the effect is the same as calling g_ptr_array_free() with free_segment set to TRUE. This function is thread-safe and may be called from any thread.

Since: 2.22

g_ptr_array_add ()

void
g_ptr_array_add (GPtrArray *array,
                 gpointer data);

Adds a pointer to the end of the pointer array. The array will grow in size automatically if necessary.

g_ptr_array_insert ()

void
g_ptr_array_insert (GPtrArray *array,
                    gint index_,
                    gpointer data);

Inserts an element into the pointer array at the given index. The array will grow in size automatically if necessary.

Since: 2.40

g_ptr_array_remove ()

gboolean
g_ptr_array_remove (GPtrArray *array,
                    gpointer data);

Removes the first occurrence of the given pointer from the pointer array. The following elements are moved down one place. If array has a non-NULL GDestroyNotify function it is called for the removed element.

It returns TRUE if the pointer was removed, or FALSE if the pointer was not found.

g_ptr_array_remove_index ()

gpointer
g_ptr_array_remove_index (GPtrArray *array,
                          guint index_);

Removes the pointer at the given index from the pointer array. The following elements are moved down one place. If array has a non-NULL GDestroyNotify function it is called for the removed element.

g_ptr_array_remove_fast ()

gboolean
g_ptr_array_remove_fast (GPtrArray *array,
                         gpointer data);

Removes the first occurrence of the given pointer from the pointer array. The last element in the array is used to fill in the space, so this function does not preserve the order of the array. But it is faster than g_ptr_array_remove(). If array has a non-NULL GDestroyNotify function it is called for the removed element.

It returns TRUE if the pointer was removed, or FALSE if the pointer was not found.

g_ptr_array_remove_index_fast ()

gpointer
g_ptr_array_remove_index_fast (GPtrArray *array,
                               guint index_);

Removes the pointer at the given index from the pointer array. The last element in the array is used to fill in the space, so this function does not preserve the order of the array. But it is faster than g_ptr_array_remove_index(). If array has a non-NULL GDestroyNotify function it is called for the removed element.

g_ptr_array_remove_range ()

GPtrArray *
g_ptr_array_remove_range (GPtrArray *array,
                          guint index_,
                          guint length);

Removes the given number of pointers starting at the given index from a GPtrArray. The following elements are moved to close the gap. If array has a non-NULL GDestroyNotify function it is called for the removed elements.

Since: 2.4

g_ptr_array_sort ()

void
g_ptr_array_sort (GPtrArray *array,
                  GCompareFunc compare_func);

Sorts the array, using compare_func which should be a qsort()-style comparison function (returns less than zero for first arg is less than second arg, zero for equal, greater than zero if irst arg is greater than second arg).

Note that the comparison function for g_ptr_array_sort() doesn't take the pointers from the array as arguments, it takes pointers to the pointers in the array.

This is guaranteed to be a stable sort since version 2.32.

g_ptr_array_sort_with_data ()

void
g_ptr_array_sort_with_data (GPtrArray *array,
                            GCompareDataFunc compare_func,
                            gpointer user_data);

Like g_ptr_array_sort(), but the comparison function has an extra user data argument.

Note that the comparison function for g_ptr_array_sort_with_data() doesn't take the pointers from the array as arguments, it takes pointers to the pointers in the array.

This is guaranteed to be a stable sort since version 2.32.

g_ptr_array_set_size ()

void
g_ptr_array_set_size (GPtrArray *array,
                      gint length);

Sets the size of the array. When making the array larger, newly-added elements will be set to NULL. When making it smaller, if array has a non-NULL GDestroyNotify function then it will be called for the removed elements.

g_ptr_array_index()

#define             g_ptr_array_index(array,index_)

Returns the pointer at the given index of the pointer array.

This does not perform bounds checking on the given index_ , so you are responsible for checking it against the array length.

g_ptr_array_free ()

gpointer *
g_ptr_array_free (GPtrArray *array,
                  gboolean free_seg);

Frees the memory allocated for the GPtrArray. If free_seg is TRUE it frees the memory block holding the elements as well. Pass FALSE if you want to free the GPtrArray wrapper but preserve the underlying array for use elsewhere. If the reference count of array is greater than one, the GPtrArray wrapper is preserved but the size of array will be set to zero.

If array contents point to dynamically-allocated memory, they should be freed separately if free_seg is TRUE and no GDestroyNotify function has been set for array .

This function is not thread-safe. If using a GPtrArray from multiple threads, use only the atomic g_ptr_array_ref() and g_ptr_array_unref() functions.

g_ptr_array_foreach ()

void
g_ptr_array_foreach (GPtrArray *array,
                     GFunc func,
                     gpointer user_data);

Calls a function for each element of a GPtrArray.

Since: 2.4

g_ptr_array_find ()

gboolean
g_ptr_array_find (GPtrArray *haystack,
                  gconstpointer needle,
                  guint *index_);

Checks whether needle exists in haystack . If the element is found, TRUE is returned and the element’s index is returned in index_ (if non-NULL). Otherwise, FALSE is returned and index_ is undefined. If needle exists multiple times in haystack , the index of the first instance is returned.

This does pointer comparisons only. If you want to use more complex equality checks, such as string comparisons, use g_ptr_array_find_with_equal_func().

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Since: 2.54

g_ptr_array_find_with_equal_func ()

gboolean
g_ptr_array_find_with_equal_func (GPtrArray *haystack,
                                  gconstpointer needle,
                                  GEqualFunc equal_func,
                                  guint *index_);

Checks whether needle exists in haystack , using the given equal_func . If the element is found, TRUE is returned and the element’s index is returned in index_ (if non-NULL). Otherwise, FALSE is returned and index_ is undefined. If needle exists multiple times in haystack , the index of the first instance is returned.

equal_func is called with the element from the array as its first parameter, and needle as its second parameter. If equal_func is NULL, pointer equality is used.

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Since: 2.54

struct GPtrArray

struct GPtrArray {
  gpointer *pdata;
  guint	    len;
};

Contains the public fields of a pointer array.