/*
- * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * Copyright (C) 2017 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
*/
#include <common/dynamic-buffer.h>
}
if (new_size > buffer->_capacity) {
- size_t original_size = buffer->size;
- size_t original_capacity = buffer->_capacity;
-
ret = lttng_dynamic_buffer_set_capacity(buffer, new_size);
if (ret) {
goto end;
}
- /*
- * Zero-initialize the space that was left in the buffer at the
- * before we increased its capacity (original capacity - original size).
- * The newly acquired capacity (new capacity - original capacity)
- * is zeroed by lttng_dynamic_buffer_set_capacity().
- */
- memset(buffer->data + original_size, 0,
- original_capacity - original_size);
+ memset(buffer->data + buffer->size, 0, new_size - buffer->size);
} else if (new_size > buffer->size) {
memset(buffer->data + buffer->size, 0, new_size - buffer->size);
} else {
{
int ret = 0;
void *new_buf;
- size_t new_capacity = round_to_power_of_2(demanded_capacity);
+ size_t new_capacity = demanded_capacity ?
+ round_to_power_of_2(demanded_capacity) : 0;
if (!buffer || demanded_capacity < buffer->size) {
/*
buffer->_capacity = 0;
free(buffer->data);
}
+
+LTTNG_HIDDEN
+size_t lttng_dynamic_buffer_get_capacity_left(
+ struct lttng_dynamic_buffer *buffer)
+{
+ if (!buffer) {
+ return 0;
+ }
+ return buffer->_capacity - buffer->size;
+}