[Lldb-commits] [lldb] r133933 - in /lldb/trunk/test: lang/objc/print-obj/TestPrintObj.py lang/objc/print-obj/blocked.m lldbtest.py

[Johnny Chen]

Author: johnny
Date: Mon Jun 27 15:05:23 2011
New Revision: 133933

URL: http://llvm.org/viewvc/llvm-project?rev=133933&view=rev
Log:
Add TestPrintObj.py to go with lang/objc/print-objc, which:

Test "print object" where another thread blocks the print object from making progress.

Set a breakpoint on the line in my_pthread_routine.  Then switch threads
to the main thread, and do print the lock_me object.  Since that will
try to get the lock already gotten by my_pthread_routime thread, it will
have to switch to running all threads, and that should then succeed.

Added:
    lldb/trunk/test/lang/objc/print-obj/TestPrintObj.py
Modified:
    lldb/trunk/test/lang/objc/print-obj/blocked.m
    lldb/trunk/test/lldbtest.py

Added: lldb/trunk/test/lang/objc/print-obj/TestPrintObj.py
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/test/lang/objc/print-obj/TestPrintObj.py?rev=133933&view=auto
==============================================================================
--- lldb/trunk/test/lang/objc/print-obj/TestPrintObj.py (added)
+++ lldb/trunk/test/lang/objc/print-obj/TestPrintObj.py Mon Jun 27 15:05:23 2011
@@ -0,0 +1,100 @@
+"""
+Test "print object" where another thread blocks the print object from making progress.
+"""
+
+import os, time
+import unittest2
+import lldb
+from lldbtest import *
+
+ at unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
+class PrintObjTestCase(TestBase):
+
+    mydir = os.path.join("lang", "objc", "print-obj")
+
+    def test_print_obj_with_dsym(self):
+        """Test "print object" where another thread blocks the print object from making progress."""
+        d = {'EXE': 'a.out'}
+        self.buildDsym(dictionary=d)
+        self.setTearDownCleanup(dictionary=d)
+        self.print_obj('a.out')
+
+    def test_print_obj_with_dwarf(self):
+        """Test "print object" where another thread blocks the print object from making progress."""
+        d = {'EXE': 'b.out'}
+        self.buildDwarf(dictionary=d)
+        self.setTearDownCleanup(dictionary=d)
+        self.print_obj('b.out')
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        # My source program.
+        self.source = "blocked.m"
+        # Find the line numbers to break at.
+        self.line = line_number(self.source, '// Set a breakpoint here.')
+
+    def print_obj(self, exe_name):
+        """
+        Test "print object" where another thread blocks the print object from making progress.
+
+        Set a breakpoint on the line in my_pthread_routine.  Then switch threads
+        to the main thread, and do print the lock_me object.  Since that will
+        try to get the lock already gotten by my_pthread_routime thread, it will
+        have to switch to running all threads, and that should then succeed.
+        """
+        exe = os.path.join(os.getcwd(), exe_name)
+
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        breakpoint = target.BreakpointCreateByLocation(self.source, self.line)
+        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, os.getcwd())
+
+        self.runCmd("thread backtrace all")
+
+        # Let's get the current stopped thread.  We'd like to switch to the
+        # other thread to issue our 'po lock_me' command.
+        import lldbutil
+        this_thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
+        self.assertTrue(this_thread)
+
+        # Find the other thread.  The iteration protocol of SBProcess and the
+        # rich comparison method (equality) comes in handy.
+        other_thread = None
+        for t in process:
+            if t != this_thread:
+                other_thread = t
+                break
+
+        # Set the other thread as the selected thread to issue our 'po' command.other
+        self.assertTrue(other_thread)
+        process.SetSelectedThread(other_thread)
+        self.runCmd("thread backtrace")
+
+        # We want to traverse the frame to the one corresponding to blocked.m to
+        # issue our 'po lock_me' command.
+
+        depth = other_thread.GetNumFrames()
+        for i in range(depth):
+            frame = other_thread.GetFrameAtIndex(i)
+            name = frame.GetFunctionName()
+            if name == 'main':
+                other_thread.SetSelectedFrame(i)
+                if self.TraceOn():
+                    print "selected frame:" + str(frame)
+                break
+
+        self.expect("po lock_me", OBJECT_PRINTED_CORRECTLY,
+            substrs = ['LockMe *', 'I am pretty special.'])
+
+
+if __name__ == '__main__':
+    import atexit
+    lldb.SBDebugger.Initialize()
+    atexit.register(lambda: lldb.SBDebugger.Terminate())
+    unittest2.main()

Modified: lldb/trunk/test/lang/objc/print-obj/blocked.m
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/test/lang/objc/print-obj/blocked.m?rev=133933&r1=133932&r2=133933&view=diff
==============================================================================
--- lldb/trunk/test/lang/objc/print-obj/blocked.m (original)
+++ lldb/trunk/test/lang/objc/print-obj/blocked.m Mon Jun 27 15:05:23 2011
@@ -50,7 +50,7 @@
 {
     printf ("my_pthread_routine about to enter.\n");  
     pthread_mutex_lock(&test_mutex);
-    printf ("Releasing Lock.\n"); /// Set a breakpoint here.
+    printf ("Releasing Lock.\n"); // Set a breakpoint here.
     pthread_mutex_unlock(&test_mutex);
     return NULL;
 }

Modified: lldb/trunk/test/lldbtest.py
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/test/lldbtest.py?rev=133933&r1=133932&r2=133933&view=diff
==============================================================================
--- lldb/trunk/test/lldbtest.py (original)
+++ lldb/trunk/test/lldbtest.py Mon Jun 27 15:05:23 2011
@@ -155,6 +155,8 @@
 
 BREAKPOINT_HIT_THRICE = "Breakpoint resolved with hit cout = 3"
 
+OBJECT_PRINTED_CORRECTLY = "Object printed correctly"
+
 SOURCE_DISPLAYED_CORRECTLY = "Source code displayed correctly"
 
 STEP_OUT_SUCCEEDED = "Thread step-out succeeded"
@@ -360,7 +362,7 @@
               - create/get a debugger set with synchronous mode (self.dbg)
               - get the command interpreter from with the debugger (self.ci)
               - create a result object for use with the command interpreter
-                (self.result)
+                (self.res)
               - plus other stuffs
 
         - The tearDown method tries to perform some necessary cleanup on behalf