--- /dev/null
+/*
+ * Copyright (C) 2019 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#include <common/dynamic-array.h>
+
+void lttng_dynamic_array_init(struct lttng_dynamic_array *array,
+ size_t element_size,
+ lttng_dynamic_array_element_destructor destructor)
+{
+ lttng_dynamic_buffer_init(&array->buffer);
+ array->element_size = element_size;
+ array->size = 0;
+ array->destructor = destructor;
+}
+
+int lttng_dynamic_array_set_count(struct lttng_dynamic_array *array,
+ size_t new_element_count)
+{
+ int ret;
+
+ if (!array) {
+ ret = -1;
+ goto end;
+ }
+
+ if (array->destructor) {
+ size_t i;
+
+ for (i = new_element_count; i < array->size; i++) {
+ void *element = lttng_dynamic_array_get_element(
+ array, i);
+
+ array->destructor(element);
+ }
+ }
+
+ array->size = new_element_count;
+ ret = lttng_dynamic_buffer_set_size(&array->buffer,
+ new_element_count * array->element_size);
+end:
+ return ret;
+}
+
+int lttng_dynamic_array_add_element(struct lttng_dynamic_array *array,
+ const void *element)
+{
+ int ret;
+
+ if (!array || !element) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = lttng_dynamic_buffer_append(&array->buffer, element,
+ array->element_size);
+ if (ret) {
+ goto end;
+ }
+ array->size++;
+end:
+ return ret;
+}
+
+int lttng_dynamic_array_remove_element(struct lttng_dynamic_array *array,
+ size_t element_index)
+{
+ void *element = lttng_dynamic_array_get_element(array,
+ element_index);
+
+ if (array->destructor) {
+ array->destructor(element);
+ }
+ if (element_index != lttng_dynamic_array_get_count(array) - 1) {
+ void *next_element = lttng_dynamic_array_get_element(array,
+ element_index + 1);
+
+ memmove(element, next_element,
+ (array->size - element_index - 1) * array->element_size);
+ }
+ array->size--;
+ return lttng_dynamic_buffer_set_size(&array->buffer,
+ array->buffer.size - array->element_size);
+}
+
+void lttng_dynamic_array_reset(struct lttng_dynamic_array *array)
+{
+ if (array->destructor) {
+ size_t i;
+
+ for (i = 0; i < lttng_dynamic_array_get_count(array); i++) {
+ array->destructor(lttng_dynamic_array_get_element(array,
+ i));
+ }
+ }
+
+ lttng_dynamic_buffer_reset(&array->buffer);
+ array->size = 0;
+}
+
+void lttng_dynamic_array_clear(struct lttng_dynamic_array *array)
+{
+ if (array->destructor) {
+ size_t i;
+
+ for (i = 0; i < lttng_dynamic_array_get_count(array); i++) {
+ array->destructor(lttng_dynamic_array_get_element(array,
+ i));
+ }
+ }
+
+ (void) lttng_dynamic_buffer_set_size(&array->buffer, 0);
+ array->size = 0;
+}
+
+void lttng_dynamic_pointer_array_init(
+ struct lttng_dynamic_pointer_array *array,
+ lttng_dynamic_pointer_array_destructor destructor)
+{
+ lttng_dynamic_array_init(&array->array, sizeof(void *), destructor);
+}
+
+int lttng_dynamic_pointer_array_remove_pointer(
+ struct lttng_dynamic_pointer_array *array, size_t index)
+{
+ int ret;
+ const lttng_dynamic_array_element_destructor destructor =
+ array->array.destructor;
+
+ /*
+ * Prevent the destructor from being used by the underlying
+ * dynamic array.
+ */
+ array->array.destructor = NULL;
+ if (destructor) {
+ destructor(lttng_dynamic_pointer_array_get_pointer(array,
+ index));
+ }
+ ret = lttng_dynamic_array_remove_element(&array->array, index);
+ array->array.destructor = destructor;
+ return ret;
+}
+
+/* Release any memory used by the dynamic array. */
+void lttng_dynamic_pointer_array_reset(
+ struct lttng_dynamic_pointer_array *array)
+{
+ if (array->array.destructor) {
+ size_t i, count = lttng_dynamic_pointer_array_get_count(array);
+
+ for (i = 0; i < count; i++) {
+ void *ptr = lttng_dynamic_pointer_array_get_pointer(
+ array, i);
+ array->array.destructor(ptr);
+ }
+ /*
+ * Prevent the destructor from being used by the underlying
+ * dynamic array.
+ */
+ array->array.destructor = NULL;
+ }
+ lttng_dynamic_array_reset(&array->array);
+}
+
+void lttng_dynamic_pointer_array_clear(
+ struct lttng_dynamic_pointer_array *array)
+{
+ const lttng_dynamic_array_element_destructor destructor =
+ array->array.destructor;
+
+ /*
+ * Prevent the destructor from being used by the underlying
+ * dynamic array.
+ */
+ array->array.destructor = NULL;
+ if (destructor) {
+ size_t i, count = lttng_dynamic_pointer_array_get_count(array);
+
+ for (i = 0; i < count; i++) {
+ void *ptr = lttng_dynamic_pointer_array_get_pointer(
+ array, i);
+ destructor(ptr);
+ }
+ }
+ lttng_dynamic_array_clear(&array->array);
+ array->array.destructor = destructor;
+}