SoW-2019-0002: Dynamic Snapshot

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

diff --git a/src/common/dynamic-array.h b/src/common/dynamic-array.h
index 483db363122ebbc5a6339cd5ec144a2181922066..2b3ea62731cb3c54a5cc17d2bbe8fd9b068744a5 100644 (file)
--- a/src/common/dynamic-array.h
+++ b/src/common/dynamic-array.h
@@ -1,18 +1,8 @@
 /*
 /*

- * Copyright (C) 2019 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * 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.
+ * SPDX-License-Identifier: LGPL-2.1-only

  *
  *

- * 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

  */
 
 #ifndef LTTNG_DYNAMIC_ARRAY_H
  */
 
 #ifndef LTTNG_DYNAMIC_ARRAY_H


@@ -89,6 +79,9 @@ int lttng_dynamic_array_remove_element(struct lttng_dynamic_array *array,
 LTTNG_HIDDEN
 void lttng_dynamic_array_reset(struct lttng_dynamic_array *array);
 
 LTTNG_HIDDEN
 void lttng_dynamic_array_reset(struct lttng_dynamic_array *array);
 

+/* Remove all elements from the dynamic array. */
+LTTNG_HIDDEN
+void lttng_dynamic_array_clear(struct lttng_dynamic_array *array);

 
 /*
  * Specialization of lttng_dynamic_array for pointers. This utility
 
 /*
  * Specialization of lttng_dynamic_array for pointers. This utility


@@ -128,6 +121,23 @@ void *lttng_dynamic_pointer_array_get_pointer(
        return *element;
 }
 
        return *element;
 }
 

+/*
+ * Returns the pointer at index `index`, sets the array slot to NULL. Does not
+ * run the destructor.
+ */
+
+static inline
+void *lttng_dynamic_pointer_array_steal_pointer(
+               struct lttng_dynamic_pointer_array *array, size_t index)
+{
+       void **p_element = lttng_dynamic_array_get_element(&array->array, index);
+       void *element = *p_element;
+
+       *p_element = NULL;
+
+       return element;
+}
+

 /*
  * Add a pointer to the end of a dynamic pointer array. The array's element
  * count is increased by one and its underlying capacity is adjusted
 /*
  * Add a pointer to the end of a dynamic pointer array. The array's element
  * count is increased by one and its underlying capacity is adjusted


@@ -154,4 +164,9 @@ LTTNG_HIDDEN
 void lttng_dynamic_pointer_array_reset(
                struct lttng_dynamic_pointer_array *array);
 
 void lttng_dynamic_pointer_array_reset(
                struct lttng_dynamic_pointer_array *array);
 

+/* Remove all elements from the dynamic pointer array. */
+LTTNG_HIDDEN
+void lttng_dynamic_pointer_array_clear(
+               struct lttng_dynamic_pointer_array *array);
+

 #endif /* LTTNG_DYNAMIC_ARRAY_H */
 #endif /* LTTNG_DYNAMIC_ARRAY_H */