1 files changed, 4 insertions, 0 deletions
diff --git a/support/xthread.h b/support/xthread.h
index a4a4ec5b1e..30501f5772 100644
--- a/support/xthread.h
+++ b/support/xthread.h
@@ -21,6 +21,7 @@
 
 #include <pthread.h>
 #include <sys/cdefs.h>
+#include <stdbool.h>
 
 __BEGIN_DECLS
 
@@ -29,6 +30,9 @@ __BEGIN_DECLS
    exit function, so atexit handlers are executed.  */
 void delayed_exit (int seconds);
 
+/* Returns true if Priority Inheritance support CLOCK_MONOTONIC.  */
+bool support_mutex_pi_monotonic (void);
+
 /* Terminate the process (with exit status 1) if VALUE is not zero.
    In that case, print a failure message to standard output mentioning
    FUNCTION.  The process is terminated with the exit function, so