[Lldb-commits] [lldb] r141931 - in /lldb/trunk: source/API/SBTarget.cpp test/python_api/default-constructor/sb_target.py test/python_api/watchpoint/watchlocation/TestTargetWatchAddress.py

[Johnny Chen]

Author: johnny
Date: Thu Oct 13 20:16:39 2011
New Revision: 141931

URL: http://llvm.org/viewvc/llvm-project?rev=141931&view=rev
Log:
Add a test case to exercise the newly added SB API:

lldb::SBWatchpoint
SBTarget::WatchAddress (lldb::addr_t addr, size_t size, bool read, bool write)

Added:
    lldb/trunk/test/python_api/watchpoint/watchlocation/TestTargetWatchAddress.py
Modified:
    lldb/trunk/source/API/SBTarget.cpp
    lldb/trunk/test/python_api/default-constructor/sb_target.py

Modified: lldb/trunk/source/API/SBTarget.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/API/SBTarget.cpp?rev=141931&r1=141930&r2=141931&view=diff
==============================================================================
--- lldb/trunk/source/API/SBTarget.cpp (original)
+++ lldb/trunk/source/API/SBTarget.cpp Thu Oct 13 20:16:39 2011
@@ -957,7 +957,7 @@
         Mutex::Locker api_locker (m_opaque_sp->GetAPIMutex());
         uint32_t watch_type = (read ? LLDB_WATCH_TYPE_READ : 0) |
             (write ? LLDB_WATCH_TYPE_WRITE : 0);
-        WatchpointSP wp_sp = m_opaque_sp->CreateWatchpoint(addr, size, watch_type);
+        sb_watchpoint = m_opaque_sp->CreateWatchpoint(addr, size, watch_type);
     }
     
     if (log)

Modified: lldb/trunk/test/python_api/default-constructor/sb_target.py
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/test/python_api/default-constructor/sb_target.py?rev=141931&r1=141930&r2=141931&view=diff
==============================================================================
--- lldb/trunk/test/python_api/default-constructor/sb_target.py (original)
+++ lldb/trunk/test/python_api/default-constructor/sb_target.py Thu Oct 13 20:16:39 2011
@@ -47,6 +47,7 @@
     obj.EnableAllWatchpoints()
     obj.DisableAllWatchpoints()
     obj.DeleteAllWatchpoints()
+    obj.WatchAddress(123, 8, True, True)
     obj.GetBroadcaster()
     obj.GetDescription(lldb.SBStream(), lldb.eDescriptionLevelBrief)
     obj.Clear()
@@ -54,5 +55,5 @@
         print module
     for bp in obj.breakpoint_iter():
         print bp
-    for wp_loc in obj.watchpoint_iter():
-        print wp_loc
+    for wp in obj.watchpoint_iter():
+        print wp

Added: lldb/trunk/test/python_api/watchpoint/watchlocation/TestTargetWatchAddress.py
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/test/python_api/watchpoint/watchlocation/TestTargetWatchAddress.py?rev=141931&view=auto
==============================================================================
--- lldb/trunk/test/python_api/watchpoint/watchlocation/TestTargetWatchAddress.py (added)
+++ lldb/trunk/test/python_api/watchpoint/watchlocation/TestTargetWatchAddress.py Thu Oct 13 20:16:39 2011
@@ -0,0 +1,102 @@
+"""
+Use lldb Python SBtarget.WatchAddress() API to create a watchpoint for write of '*g_char_ptr'.
+"""
+
+import os, time
+import re
+import unittest2
+import lldb, lldbutil
+from lldbtest import *
+
+class TargetWatchAddressAPITestCase(TestBase):
+
+    mydir = os.path.join("python_api", "watchpoint", "watchlocation")
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        # Our simple source filename.
+        self.source = 'main.cpp'
+        # Find the line number to break inside main().
+        self.line = line_number(self.source, '// Set break point at this line.')
+        # This is for verifying that watch location works.
+        self.violating_func = "do_bad_thing_with_location";
+
+    @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
+    @python_api_test
+    def test_watch_address_with_dsym(self):
+        """Exercise SBTarget.WatchAddress() API to set a watchpoint."""
+        self.buildDsym()
+        self.do_set_watchaddress()
+
+    @python_api_test
+    def test_watch_val_with_dwarf(self):
+        """Exercise SBTarget.WatchAddress() API to set a watchpoint."""
+        self.buildDwarf()
+        self.do_set_watchaddress()
+
+    def do_set_watchaddress(self):
+        """Use SBTarget.WatchAddress() to set a watchpoint and verify that the program stops later due to the watchpoint."""
+        exe = os.path.join(os.getcwd(), "a.out")
+
+        # Create a target by the debugger.
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        # Now create a breakpoint on main.c.
+        breakpoint = target.BreakpointCreateByLocation(self.source, self.line)
+        self.assertTrue(breakpoint and
+                        breakpoint.GetNumLocations() == 1,
+                        VALID_BREAKPOINT)
+
+        # Now launch the process, and do not stop at the entry point.
+        process = target.LaunchSimple(None, None, os.getcwd())
+
+        # We should be stopped due to the breakpoint.  Get frame #0.
+        process = target.GetProcess()
+        self.assertTrue(process.GetState() == lldb.eStateStopped,
+                        PROCESS_STOPPED)
+        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
+        frame0 = thread.GetFrameAtIndex(0)
+
+        value = frame0.FindValue('g_char_ptr',
+                                 lldb.eValueTypeVariableGlobal)
+        pointee = value.CreateValueFromAddress("pointee",
+                                               value.GetValueAsUnsigned(0),
+                                               value.GetType().GetPointeeType())
+        # Watch for write to *g_char_ptr.
+        watchpoint = target.WatchAddress(value.GetValueAsUnsigned(), 1, False, True)
+        print watchpoint
+        self.assertTrue(value and watchpoint,
+                        "Successfully found the pointer and set a watchpoint")
+        self.DebugSBValue(value)
+        self.DebugSBValue(pointee)
+
+        # Hide stdout if not running with '-t' option.
+        if not self.TraceOn():
+            self.HideStdout()
+
+        print watchpoint
+
+        # Continue.  Expect the program to stop due to the variable being written to.
+        process.Continue()
+
+        if (self.TraceOn()):
+            lldbutil.print_stacktraces(process)
+
+        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonWatchpoint)
+        self.assertTrue(thread, "The thread stopped due to watchpoint")
+        self.DebugSBValue(value)
+        self.DebugSBValue(pointee)
+
+        self.expect(lldbutil.print_stacktrace(thread, string_buffer=True), exe=False,
+            substrs = [self.violating_func])
+
+        # This finishes our test.
+
+
+if __name__ == '__main__':
+    import atexit
+    lldb.SBDebugger.Initialize()
+    atexit.register(lambda: lldb.SBDebugger.Terminate())
+    unittest2.main()