1 files changed, 65 insertions, 0 deletions
diff --git a/test/xray/TestCases/Posix/profiling-single-threaded.cc b/test/xray/TestCases/Posix/profiling-single-threaded.cc
new file mode 100644
index 000000000000..fd508b1acd14
--- /dev/null
+++ b/test/xray/TestCases/Posix/profiling-single-threaded.cc
@@ -0,0 +1,65 @@
+// Check that we can get a profile from a single-threaded application, on
+// demand through the XRay logging implementation API.
+//
+// FIXME: Make -fxray-modes=xray-profiling part of the default?
+// RUN: %clangxx_xray -std=c++11 %s -o %t -fxray-modes=xray-profiling
+// RUN: rm -f xray-log.profiling-single-*
+// RUN: XRAY_OPTIONS=verbosity=1 \
+// RUN:     XRAY_PROFILING_OPTIONS=no_flush=true %run %t
+// RUN: XRAY_OPTIONS=verbosity=1 %run %t
+// RUN: PROFILES=`ls xray-log.profiling-single-* | wc -l`
+// RUN: [ $PROFILES -eq 2 ]
+// RUN: rm -f xray-log.profiling-single-*
+//
+// REQUIRES: x86_64-target-arch
+// REQUIRES: built-in-llvm-tree
+
+#include "xray/xray_interface.h"
+#include "xray/xray_log_interface.h"
+#include <cassert>
+#include <cstdio>
+#include <string>
+
+[[clang::xray_always_instrument]] void f2() { return; }
+[[clang::xray_always_instrument]] void f1() { f2(); }
+[[clang::xray_always_instrument]] void f0() { f1(); }
+
+using namespace std;
+
+volatile int buffer_counter = 0;
+
+[[clang::xray_never_instrument]] void process_buffer(const char *, XRayBuffer) {
+  // FIXME: Actually assert the contents of the buffer.
+  ++buffer_counter;
+}
+
+[[clang::xray_always_instrument]] int main(int, char **) {
+  assert(__xray_log_select_mode("xray-profiling") ==
+         XRayLogRegisterStatus::XRAY_REGISTRATION_OK);
+  assert(__xray_log_get_current_mode() != nullptr);
+  std::string current_mode = __xray_log_get_current_mode();
+  assert(current_mode == "xray-profiling");
+  assert(__xray_patch() == XRayPatchingStatus::SUCCESS);
+  assert(__xray_log_init_mode("xray-profiling", "") ==
+         XRayLogInitStatus::XRAY_LOG_INITIALIZED);
+  f0();
+  assert(__xray_log_finalize() == XRayLogInitStatus::XRAY_LOG_FINALIZED);
+  f0();
+  assert(__xray_log_process_buffers(process_buffer) ==
+         XRayLogFlushStatus::XRAY_LOG_FLUSHED);
+  assert(buffer_counter == 1);
+  assert(__xray_log_flushLog() == XRayLogFlushStatus::XRAY_LOG_FLUSHED);
+
+  // Let's reset the counter.
+  buffer_counter = 0;
+
+  assert(__xray_log_init_mode("xray-profiling", "") ==
+         XRayLogInitStatus::XRAY_LOG_INITIALIZED);
+  f0();
+  assert(__xray_log_finalize() == XRayLogInitStatus::XRAY_LOG_FINALIZED);
+  f0();
+  assert(__xray_log_process_buffers(process_buffer) ==
+         XRayLogFlushStatus::XRAY_LOG_FLUSHED);
+  assert(buffer_counter == 1);
+  assert(__xray_log_flushLog() == XRayLogFlushStatus::XRAY_LOG_FLUSHED);
+}