lib: iterator auto-seeking: handle intersecting discarded items messages

[babeltrace.git] / include / babeltrace / babeltrace-internal.h

diff --git a/include/babeltrace/babeltrace-internal.h b/include/babeltrace/babeltrace-internal.h
index d58b9860c8b5c65a71a811a7799c1da495a1aaa9..981f84b186910cd7145fe04cb93c30805752e36c 100644 (file)
--- a/include/babeltrace/babeltrace-internal.h
+++ b/include/babeltrace/babeltrace-internal.h
@@ -26,6 +26,7 @@
 #include <glib.h>
 #include <stdint.h>
 #include <stdlib.h>
+#include <stdbool.h>
 #include <errno.h>
 #include <babeltrace/compat/string-internal.h>
 #include <babeltrace/types.h>
@@ -61,6 +62,38 @@
        ((type) (a) > (type) (b) ? (type) (a) : (type) (b))
 #endif
 
+static inline
+bool bt_safe_to_mul_int64(int64_t a, int64_t b)
+{
+       if (a == 0 || b == 0) {
+               return true;
+       }
+
+       return a < INT64_MAX / b;
+}
+
+static inline
+bool bt_safe_to_mul_uint64(uint64_t a, uint64_t b)
+{
+       if (a == 0 || b == 0) {
+               return true;
+       }
+
+       return a < UINT64_MAX / b;
+}
+
+static inline
+bool bt_safe_to_add_int64(int64_t a, int64_t b)
+{
+       return a <= INT64_MAX - b;
+}
+
+static inline
+bool bt_safe_to_add_uint64(uint64_t a, uint64_t b)
+{
+       return a <= UINT64_MAX - b;
+}
+
 /*
  * Memory allocation zeroed
  */