Add debug output if io_uring initialization fails.

[plocate] / io_uring_engine.cpp

diff --git a/io_uring_engine.cpp b/io_uring_engine.cpp
index fc51abab6a75e23143235f555e8edec82547529b..03160b12a4abb1f04e83a84acfcf84d7589ad1f1 100644 (file)
--- a/io_uring_engine.cpp
+++ b/io_uring_engine.cpp
@@ -5,6 +5,7 @@
 #ifndef WITHOUT_URING
 #include <liburing.h>
 #endif
+#include "dprintf.h"
 #include "io_uring_engine.h"
 
 #include <functional>
@@ -20,8 +21,12 @@ IOUringEngine::IOUringEngine(size_t slop_bytes)
 {
 #ifdef WITHOUT_URING
        int ret = -1;
+       dprintf("Compiled without liburing support; not using io_uring.\n");
 #else
        int ret = io_uring_queue_init(queue_depth, &ring, 0);
+       if (ret < 0) {
+               dprintf("io_uring_queue_init() failed; not using io_uring.\n");
+       }
 #endif
        using_uring = (ret >= 0);
 }