From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Tue, 17 Oct 2017 21:18:14 +0000 (-0400)
Subject: Add a util to create a buffer view from a raw buffer
X-Git-Tag: v2.11.0-rc1~94
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=b35aac846ef0c3109e964f5babd59cdbabe373cc;p=lttng-tools.git

Add a util to create a buffer view from a raw buffer

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

diff --git a/src/common/buffer-view.c b/src/common/buffer-view.c
index 4e84b0335..6053501ef 100644
--- a/src/common/buffer-view.c
+++ b/src/common/buffer-view.c
@@ -20,6 +20,14 @@
 #include <common/error.h>
 #include <assert.h>
 
+LTTNG_HIDDEN
+struct lttng_buffer_view lttng_buffer_view_init(
+		const char *src, size_t offset, ptrdiff_t len)
+{
+	struct lttng_buffer_view view = { .data = src + offset, .size = len };
+	return view;
+}
+
 LTTNG_HIDDEN
 struct lttng_buffer_view lttng_buffer_view_from_view(
 		const struct lttng_buffer_view *src, size_t offset,
diff --git a/src/common/buffer-view.h b/src/common/buffer-view.h
index d2b18f663..878b845bc 100644
--- a/src/common/buffer-view.h
+++ b/src/common/buffer-view.h
@@ -29,6 +29,21 @@ struct lttng_buffer_view {
 	size_t size;
 };
 
+/**
+ * Return a buffer view referencing a subset of the memory referenced by a raw
+ * pointer.
+ *
+ * @src		Source buffer to reference
+ * @offset	Offset to apply to the source memory buffer
+ * @len		Length of the memory contents to reference.
+ *
+ * Note that a buffer view never assumes the ownership of the memory it
+ * references.
+ */
+LTTNG_HIDDEN
+struct lttng_buffer_view lttng_buffer_view_init(
+		const char *src, size_t offset, ptrdiff_t len);
+
 /**
  * Return a buffer view referencing a subset of the memory referenced by another
  * view.