From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Tue, 17 Oct 2017 21:21:10 +0000 (-0400)
Subject: Add lttng_dynamic_buffer_get_capacity_left util
X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=commitdiff_plain;h=201bd4152ffcd30d3e2269d842258c885e6cc193

Add lttng_dynamic_buffer_get_capacity_left util

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/src/common/dynamic-buffer.c b/src/common/dynamic-buffer.c
index fd39f813b..2e27afa1f 100644
--- a/src/common/dynamic-buffer.c
+++ b/src/common/dynamic-buffer.c
@@ -186,3 +186,13 @@ void lttng_dynamic_buffer_reset(struct lttng_dynamic_buffer *buffer)
 	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;
+}
diff --git a/src/common/dynamic-buffer.h b/src/common/dynamic-buffer.h
index d42a6a61d..cd23ccad4 100644
--- a/src/common/dynamic-buffer.h
+++ b/src/common/dynamic-buffer.h
@@ -94,4 +94,9 @@ int lttng_dynamic_buffer_set_capacity(struct lttng_dynamic_buffer *buffer,
 LTTNG_HIDDEN
 void lttng_dynamic_buffer_reset(struct lttng_dynamic_buffer *buffer);
 
+/* Get the space left in the buffer before a new resize is needed. */
+LTTNG_HIDDEN
+size_t lttng_dynamic_buffer_get_capacity_left(
+		struct lttng_dynamic_buffer *buffer);
+
 #endif /* LTTNG_DYNAMIC_BUFFER_H */