1 files changed, 11 insertions, 0 deletions
diff --git a/src/core/options.h b/src/core/options.h
index 2d843a4c..ec5cce90 100644
--- a/src/core/options.h
+++ b/src/core/options.h
@@ -37,6 +37,17 @@ extern int nni_setopt_int(int *, const void *, size_t, int, int);
 // nni_getopt_int gets an integer.
 extern int nni_getopt_int(int *, void *, size_t *);
 
+// nni_setopt_size sets a size_t option.
+extern int nni_setopt_size(size_t *, const void *, size_t, size_t, size_t);
+
+// We limit the maximum size to 4GB.  That's intentional because some of the
+// underlying protocols cannot cope with anything bigger than 32-bits.
+#define NNI_MINSZ	(0)
+#define NNI_MAXSZ	((size_t) 0xffffffff)
+
+// nni_getopt_size obtains a size_t option.
+extern int nni_getopt_size(size_t *, void *, size_t *);
+
 // nni_getopt_fd obtains a notification file descriptor.
 extern int nni_getopt_fd(nni_sock *, nni_notifyfd *, int, void *, size_t *);