From 8c690f1ed9f5fbb30fd7d1983d711d414753ad40 Mon Sep 17 00:00:00 2001
From: Oliver Langlois <olivier@olivierlanglois.net>
Date: Sun, 9 Feb 2020 05:48:10 +0000
Subject: [PATCH] ev: log aio backend

---
 CMakeLists.txt               | 7 +++++++
 cmake/lws_config.h.in        | 1 +
 lib/event-libs/libev/libev.c | 5 +++++
 3 files changed, 13 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8ef6b93b3..38fb5a09b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -865,6 +865,13 @@ CHECK_INCLUDE_FILE(uv-version.h LWS_HAVE_UV_VERSION_H)
   endif()
 endif()
 
+if (LWS_WITH_LIBEV)
+	CHECK_C_SOURCE_COMPILES(
+        "#include <ev.h>
+        int main(int argc, char **argv) { return EVBACKEND_LINUXAIO; }
+        " LWS_HAVE_EVBACKEND_LINUXAIO)
+endif()
+
 
 if (LWS_WITH_ZLIB AND NOT LWS_WITH_BUNDLED_ZLIB)
 	if (LWS_WITH_MINIZ)
diff --git a/cmake/lws_config.h.in b/cmake/lws_config.h.in
index 9690a4807..16c68dcf5 100644
--- a/cmake/lws_config.h.in
+++ b/cmake/lws_config.h.in
@@ -100,6 +100,7 @@
 #cmakedefine LWS_WITH_DEPRECATED_LWS_DLL
 #cmakedefine LWS_WITH_DIR
 #cmakedefine LWS_WITH_ESP32
+#cmakedefine LWS_HAVE_EVBACKEND_LINUXAIO
 #cmakedefine LWS_WITH_EXTERNAL_POLL
 #cmakedefine LWS_WITH_FTS
 #cmakedefine LWS_WITH_GENCRYPTO
diff --git a/lib/event-libs/libev/libev.c b/lib/event-libs/libev/libev.c
index c2449550f..3e4e90abc 100644
--- a/lib/event-libs/libev/libev.c
+++ b/lib/event-libs/libev/libev.c
@@ -175,6 +175,11 @@ elops_init_pt_ev(struct lws_context *context, void *_loop, int tsi)
 	case EVBACKEND_EPOLL:
 		backend_name = "epoll";
 		break;
+#if defined(LWS_HAVE_EVBACKEND_LINUXAIO)
+       case EVBACKEND_LINUXAIO:
+               backend_name = "Linux AIO";
+               break;
+#endif
 	case EVBACKEND_KQUEUE:
 		backend_name = "kqueue";
 		break;