X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Fbuffer-view.h;h=ecd764d7c019f1c5e5902b848676f78df93ef223;hb=348ddc5c9107149d48b1f12d31a7e75e9b73b4da;hp=f22dc524c743afbdb0f9e2ec52e3d3405ff69f8e;hpb=67d8e2ef48ea2cd334bf9efd90b58b976437a3cd;p=lttng-tools.git

diff --git a/src/common/buffer-view.h b/src/common/buffer-view.h
index f22dc524c..ecd764d7c 100644
--- a/src/common/buffer-view.h
+++ b/src/common/buffer-view.h
@@ -13,6 +13,10 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct lttng_dynamic_buffer;
 
 struct lttng_buffer_view {
@@ -31,10 +35,20 @@ struct lttng_buffer_view {
  * 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);
 
+/**
+ * Checks if a buffer view is safe to access.
+ *
+ * After calling the buffer view creation functions, callers should verify
+ * if the resquested length (if any is explicitly provided) could be mapped
+ * to a new view.
+ *
+ * @view	Buffer view to validate
+ */
+bool lttng_buffer_view_is_valid(const struct lttng_buffer_view *view);
+
 /**
  * Return a buffer view referencing a subset of the memory referenced by another
  * view.
@@ -48,7 +62,6 @@ struct lttng_buffer_view lttng_buffer_view_init(
  * Note that a buffer view never assumes the ownership of the memory it
  * references.
  */
-LTTNG_HIDDEN
 struct lttng_buffer_view lttng_buffer_view_from_view(
 		const struct lttng_buffer_view *src, size_t offset,
 		ptrdiff_t len);
@@ -66,7 +79,6 @@ struct lttng_buffer_view lttng_buffer_view_from_view(
  * Note that a buffer view never assumes the ownership of the memory it
  * references.
  */
-LTTNG_HIDDEN
 struct lttng_buffer_view lttng_buffer_view_from_dynamic_buffer(
 		const struct lttng_dynamic_buffer *src, size_t offset,
 		ptrdiff_t len);
@@ -80,9 +92,12 @@ struct lttng_buffer_view lttng_buffer_view_from_dynamic_buffer(
  * @len_with_null_terminator	Expected length of the string, including the
  * 				NULL terminator.
  */
-LTTNG_HIDDEN
 bool lttng_buffer_view_contains_string(const struct lttng_buffer_view *buf,
 		const char *str,
 		size_t len_with_null_terminator);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* LTTNG_BUFFER_VIEW_H */