Add the trace chunk and trace chunk registry interfaces

[lttng-tools.git] / src / common / dynamic-array.c

diff --git a/src/common/dynamic-array.c b/src/common/dynamic-array.c
new file mode 100644 (file)
index 0000000..69c9c61
--- /dev/null
+++ b/src/common/dynamic-array.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2019 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License, version 2.1 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <common/dynamic-array.h>
+
+LTTNG_HIDDEN
+void lttng_dynamic_array_init(struct lttng_dynamic_array *array,
+               size_t element_size)
+{
+       lttng_dynamic_buffer_init(&array->buffer);
+       array->element_size = element_size;
+}
+
+LTTNG_HIDDEN
+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;
+}
+
+LTTNG_HIDDEN
+void lttng_dynamic_array_reset(struct lttng_dynamic_array *array,
+               lttng_dynamic_array_element_destructor destructor)
+{
+       if (destructor) {
+               size_t i;
+
+               for (i = 0; i < lttng_dynamic_array_get_count(array); i++) {
+                       destructor(lttng_dynamic_array_get_element(array, i));
+               }
+       }
+
+       lttng_dynamic_buffer_reset(&array->buffer);
+       array->size = 0;
+}
+
+LTTNG_HIDDEN
+void lttng_dynamic_pointer_array_init(
+               struct lttng_dynamic_pointer_array *array)
+{
+       lttng_dynamic_array_init(&array->array, sizeof(void *));
+}      
+
+/* Release any memory used by the dynamic array. */
+LTTNG_HIDDEN
+void lttng_dynamic_pointer_array_reset(
+               struct lttng_dynamic_pointer_array *array,
+               lttng_dynamic_pointer_array_destructor destructor)
+{
+       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_reset(&array->array, NULL);
+}