3 files changed, 132 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/expression_command/timeout/Makefile b/packages/Python/lldbsuite/test/expression_command/timeout/Makefile
new file mode 100644
index 0000000..c9cff41
--- /dev/null
+++ b/packages/Python/lldbsuite/test/expression_command/timeout/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../make
+
+CXX_SOURCES := wait-a-while.cpp
+
+include $(LEVEL)/Makefile.rules
diff --git a/packages/Python/lldbsuite/test/expression_command/timeout/TestCallWithTimeout.py b/packages/Python/lldbsuite/test/expression_command/timeout/TestCallWithTimeout.py
new file mode 100644
index 0000000..a602afc
--- /dev/null
+++ b/packages/Python/lldbsuite/test/expression_command/timeout/TestCallWithTimeout.py
@@ -0,0 +1,92 @@
+"""
+Test calling a function that waits a while, and make sure the timeout option to expr works.
+"""
+
+from __future__ import print_function
+
+
+
+import lldb
+import lldbsuite.test.lldbutil as lldbutil
+from lldbsuite.test.lldbtest import *
+
+class ExprCommandWithTimeoutsTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+
+        self.main_source = "wait-a-while.cpp"
+        self.main_source_spec = lldb.SBFileSpec (self.main_source)
+
+
+    @expectedFlakeyFreeBSD("llvm.org/pr19605")
+    @expectedFlakeyLinux("llvm.org/pr20275")
+    @expectedFailureWindows("llvm.org/pr21765")
+    def test(self):
+        """Test calling std::String member function."""
+        self.build()
+
+        exe_name = "a.out"
+        exe = os.path.join(os.getcwd(), exe_name)
+
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        breakpoint = target.BreakpointCreateBySourceRegex('stop here in main.',self.main_source_spec)
+        self.assertTrue(breakpoint, VALID_BREAKPOINT)
+        self.runCmd("breakpoint list")
+
+        # Launch the process, and do not stop at the entry point.
+        process = target.LaunchSimple (None, None, self.get_process_working_directory())
+
+        self.assertTrue(process, PROCESS_IS_VALID)
+
+        # Frame #0 should be on self.step_out_of_malloc.
+        threads = lldbutil.get_threads_stopped_at_breakpoint (process, breakpoint)
+        
+        self.assertTrue(len(threads) == 1)
+        thread = threads[0]
+        
+        # First set the timeout too short, and make sure we fail.
+        options = lldb.SBExpressionOptions()
+        options.SetTimeoutInMicroSeconds(10)
+        options.SetUnwindOnError(True)
+
+        frame = thread.GetFrameAtIndex(0)
+        
+        value = frame.EvaluateExpression ("wait_a_while (200000)", options)
+        self.assertTrue (value.IsValid())
+        self.assertFalse (value.GetError().Success())
+
+        # Now do the same thing with the command line command, and make sure it works too.
+        interp = self.dbg.GetCommandInterpreter()
+
+        result = lldb.SBCommandReturnObject()
+        return_value = interp.HandleCommand ("expr -t 100 -u true -- wait_a_while(200000)", result)
+        self.assertTrue (return_value == lldb.eReturnStatusFailed)
+
+        # Okay, now do it again with long enough time outs:
+
+        options.SetTimeoutInMicroSeconds(1000000)
+        value = frame.EvaluateExpression ("wait_a_while (1000)", options)
+        self.assertTrue(value.IsValid())
+        self.assertTrue (value.GetError().Success() == True)
+        
+        # Now do the same thingwith the command line command, and make sure it works too.
+        interp = self.dbg.GetCommandInterpreter()
+
+        result = lldb.SBCommandReturnObject()
+        return_value = interp.HandleCommand ("expr -t 1000000 -u true -- wait_a_while(1000)", result)
+        self.assertTrue(return_value == lldb.eReturnStatusSuccessFinishResult)
+
+
+        # Finally set the one thread timeout and make sure that doesn't change things much:
+
+        options.SetTimeoutInMicroSeconds(1000000)
+        options.SetOneThreadTimeoutInMicroSeconds(500000)
+        value = frame.EvaluateExpression ("wait_a_while (1000)", options)
+        self.assertTrue(value.IsValid())
+        self.assertTrue (value.GetError().Success() == True)
diff --git a/packages/Python/lldbsuite/test/expression_command/timeout/wait-a-while.cpp b/packages/Python/lldbsuite/test/expression_command/timeout/wait-a-while.cpp
new file mode 100644
index 0000000..ac37c5d
--- /dev/null
+++ b/packages/Python/lldbsuite/test/expression_command/timeout/wait-a-while.cpp
@@ -0,0 +1,35 @@
+#include <stdio.h>
+#include <stdint.h>
+
+#include <chrono>
+#include <thread>
+
+
+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++;
+        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;
+}
+
+int
+main (int argc, char **argv)
+{
+    printf ("stop here in main.\n");
+    int num_times = wait_a_while (argc * 1000);
+    printf ("Done, took %d times.\n", num_times);
+
+    return 0;
+
+}