From: Adam C. Emerson <aemerson@redhat.com>
Date: Tue, 6 Aug 2019 19:30:57 +0000 (-0400)
Subject: RADOS: Completion handling benchmark
X-Git-Tag: v15.1.0~843^2~2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=5e10fc54a74eedf83571c4fd2b65a12fdde83544;p=ceph.git

RADOS: Completion handling benchmark

Signed-off-by: Adam C. Emerson <aemerson@redhat.com>
---

diff --git a/src/test/RADOS/CMakeLists.txt b/src/test/RADOS/CMakeLists.txt
index 6add46d5c4f..8a5d3da8d5e 100644
--- a/src/test/RADOS/CMakeLists.txt
+++ b/src/test/RADOS/CMakeLists.txt
@@ -1,2 +1,7 @@
 add_executable(ceph_test_RADOS_start_stop start_stop.cc)
-target_link_libraries(ceph_test_RADOS_start_stop global libRADOS ${unittest_libs})
+target_link_libraries(ceph_test_RADOS_start_stop
+  global libRADOS ${unittest_libs})
+
+add_executable(ceph_test_RADOS_completions completions.cc)
+target_link_libraries(ceph_test_RADOS_completions Boost::system pthread
+  ${unittest_libs})
diff --git a/src/test/RADOS/completions.cc b/src/test/RADOS/completions.cc
new file mode 100644
index 00000000000..d9c0e087005
--- /dev/null
+++ b/src/test/RADOS/completions.cc
@@ -0,0 +1,20 @@
+#include <cassert>
+#include <boost/asio.hpp>
+#include <boost/system/system_error.hpp>
+
+constexpr int max_completions = 10'000'000;
+int completed = 0;
+
+boost::asio::io_context c;
+
+void nested_cb() {
+  if (++completed < max_completions)
+    c.post(&nested_cb);
+}
+
+int main(void) {
+  c.post(&nested_cb);
+  c.run();
+  assert(completed == max_completions);
+  return 0;
+}