This test case was incorrect, it was relying on the fact

that the function we were calling would continue to sleep
for the requested time even if it was interrupted.  That is
not true of std::this_thread::sleep_for, at least not on OS X.

Fix the test case so that if it wakes up early, it goes back
to sleep till the time is actually greater than the end point.

<rdar://problem/18523742>

llvm-svn: 219234

1 files changed, 6 insertions, 2 deletions

diff --git a/lldb/test/expression_command/timeout/wait-a-while.cpp b/lldb/test/expression_command/timeout/wait-a-while.cpp
index 8403030e41c..ac37c5d243b 100644
--- a/lldb/test/expression_command/timeout/wait-a-while.cpp
+++ b/lldb/test/expression_command/timeout/wait-a-while.cpp
@@ -9,12 +9,16 @@ int
 wait_a_while (int microseconds)
 {
     int num_times = 0;
+    auto end_time = std::chrono::system_clock::now() + std::chrono::microseconds(microseconds);
 
     while (1)
     {
         num_times++;
-        std::this_thread::sleep_for(std::chrono::microseconds(microseconds));
-        break;
+        auto wait_time = end_time - std::chrono::system_clock::now();
+
+        std::this_thread::sleep_for(wait_time);
+        if (std::chrono::system_clock::now() > end_time)
+            break;
     }
     return num_times;
 }