Vendor import of lldb trunk r256945:vendor/lldb/lldb-trunk-r256945

https://llvm.org/svn/llvm-project/lldb/trunk@256945

1 files changed, 131 insertions, 0 deletions

diff --git a/packages/Python/lldbsuite/test/functionalities/thread/step_out/TestThreadStepOut.py b/packages/Python/lldbsuite/test/functionalities/thread/step_out/TestThreadStepOut.py
new file mode 100644
index 000000000000..b2d966c4c0f3
--- /dev/null
+++ b/packages/Python/lldbsuite/test/functionalities/thread/step_out/TestThreadStepOut.py
@@ -0,0 +1,131 @@
+"""
+Test stepping out from a function in a multi-threaded program.
+"""
+
+from __future__ import print_function
+
+
+
+import os, time
+import lldb
+from lldbsuite.test.lldbtest import *
+import lldbsuite.test.lldbutil as lldbutil
+
+class ThreadStepOutTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    @skipIfLinux                              # Test occasionally times out on the Linux build bot
+    @expectedFailureLinux("llvm.org/pr23477") # Test occasionally times out on the Linux build bot
+    @expectedFailureFreeBSD("llvm.org/pr18066") # inferior does not exit
+    @expectedFailureWindows # Test crashes
+    def test_step_single_thread(self):
+        """Test thread step out on one thread via command interpreter. """
+        self.build(dictionary=self.getBuildFlags())
+        self.step_out_test(self.step_out_single_thread_with_cmd)
+
+    @skipIfLinux                              # Test occasionally times out on the Linux build bot
+    @expectedFailureLinux("llvm.org/pr23477") # Test occasionally times out on the Linux build bot
+    @expectedFailureFreeBSD("llvm.org/pr19347") # 2nd thread stops at breakpoint
+    @expectedFailureWindows # Test crashes
+    def test_step_all_threads(self):
+        """Test thread step out on all threads via command interpreter. """
+        self.build(dictionary=self.getBuildFlags())
+        self.step_out_test(self.step_out_all_threads_with_cmd)
+
+    @skipIfLinux                              # Test occasionally times out on the Linux build bot
+    @expectedFailureLinux("llvm.org/pr23477") # Test occasionally times out on the Linux build bot
+    @expectedFailureFreeBSD("llvm.org/pr19347")
+    @expectedFailureWindows("llvm.org/pr24681")
+    def test_python(self):
+        """Test thread step out on one thread via Python API (dwarf)."""
+        self.build(dictionary=self.getBuildFlags())
+        self.step_out_test(self.step_out_with_python)
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        # Find the line number for our breakpoint.
+        self.breakpoint = line_number('main.cpp', '// Set breakpoint here')
+        if "gcc" in self.getCompiler() or self.isIntelCompiler(): 
+            self.step_out_destination = line_number('main.cpp', '// Expect to stop here after step-out (icc and gcc)')
+        else:
+            self.step_out_destination = line_number('main.cpp', '// Expect to stop here after step-out (clang)')
+
+    def step_out_single_thread_with_cmd(self):
+        self.step_out_with_cmd("this-thread")
+        self.expect("thread backtrace all", "Thread location after step out is correct",
+            substrs = ["main.cpp:%d" % self.step_out_destination,
+                       "main.cpp:%d" % self.breakpoint])
+
+    def step_out_all_threads_with_cmd(self):
+        self.step_out_with_cmd("all-threads")
+        self.expect("thread backtrace all", "Thread location after step out is correct",
+            substrs = ["main.cpp:%d" % self.step_out_destination])
+
+    def step_out_with_cmd(self, run_mode):
+        self.runCmd("thread select %d" % self.step_out_thread.GetIndexID())
+        self.runCmd("thread step-out -m %s" % run_mode)
+        self.expect("process status", "Expected stop reason to be step-out",
+            substrs = ["stop reason = step out"])
+
+        self.expect("thread list", "Selected thread did not change during step-out",
+            substrs = ["* thread #%d" % self.step_out_thread.GetIndexID()])
+
+    def step_out_with_python(self):
+        self.step_out_thread.StepOut()
+
+        reason = self.step_out_thread.GetStopReason()
+        self.assertEqual(lldb.eStopReasonPlanComplete, reason,
+            "Expected thread stop reason 'plancomplete', but got '%s'" % lldbutil.stop_reason_to_str(reason))
+
+        # Verify location after stepping out
+        frame = self.step_out_thread.GetFrameAtIndex(0)
+        desc = lldbutil.get_description(frame.GetLineEntry())
+        expect = "main.cpp:%d" % self.step_out_destination
+        self.assertTrue(expect in desc, "Expected %s but thread stopped at %s" % (expect, desc))
+
+    def step_out_test(self, step_out_func):
+        """Test single thread step out of a function."""
+        exe = os.path.join(os.getcwd(), "a.out")
+        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
+
+        # This should create a breakpoint in the main thread.
+        lldbutil.run_break_set_by_file_and_line (self, "main.cpp", self.breakpoint, num_expected_locations=1)
+
+        # The breakpoint list should show 1 location.
+        self.expect("breakpoint list -f", "Breakpoint location shown correctly",
+            substrs = ["1: file = 'main.cpp', line = %d, exact_match = 0, locations = 1" % self.breakpoint])
+
+        # Run the program.
+        self.runCmd("run", RUN_SUCCEEDED)
+
+        # Get the target process
+        self.inferior_target = self.dbg.GetSelectedTarget()
+        self.inferior_process = self.inferior_target.GetProcess()
+
+        # Get the number of threads, ensure we see all three.
+        num_threads = self.inferior_process.GetNumThreads()
+        self.assertEqual(num_threads, 3, 'Number of expected threads and actual threads do not match.')
+
+        (breakpoint_threads, other_threads) = ([], [])
+        lldbutil.sort_stopped_threads(self.inferior_process,
+                                      breakpoint_threads=breakpoint_threads,
+                                      other_threads=other_threads)
+
+        while len(breakpoint_threads) < 2:
+            self.runCmd("thread continue %s" % " ".join([str(x.GetIndexID()) for x in other_threads]))
+            lldbutil.sort_stopped_threads(self.inferior_process,
+                                          breakpoint_threads=breakpoint_threads,
+                                          other_threads=other_threads)
+
+        self.step_out_thread = breakpoint_threads[0]
+
+        # Step out of thread stopped at breakpoint
+        step_out_func()
+
+        # Run to completion
+        self.runCmd("continue")
+
+        # At this point, the inferior process should have exited.
+        self.assertTrue(self.inferior_process.GetState() == lldb.eStateExited, PROCESS_EXITED)