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| author | dim <dim@FreeBSD.org> | 2016-01-06 20:12:03 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2016-01-06 20:12:03 +0000 |
| commit | 78b9749c0a4ea980a8b934645da6ae98fcc665e8 (patch) | |
| tree | dd2a1ddf0476664c2b823409c36cbccd52662ca7 /packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value | |
| parent | 60cb593f9d55fa5ca7a5372b731f2330345b4b9a (diff) | |
| download | FreeBSD-src-78b9749c0a4ea980a8b934645da6ae98fcc665e8.zip FreeBSD-src-78b9749c0a4ea980a8b934645da6ae98fcc665e8.tar.gz | |
Vendor import of lldb trunk r256945:
https://llvm.org/svn/llvm-project/lldb/trunk@256945
Diffstat (limited to 'packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value')
3 files changed, 330 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value/Makefile b/packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value/Makefile new file mode 100644 index 0000000..a981f4b --- /dev/null +++ b/packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value/Makefile @@ -0,0 +1,6 @@ +LEVEL = ../../../make + +OBJC_SOURCES := dynamic-value.m +LDFLAGS = $(CFLAGS) -lobjc -framework Foundation + +include $(LEVEL)/Makefile.rules diff --git a/packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value/TestObjCDynamicValue.py b/packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value/TestObjCDynamicValue.py new file mode 100644 index 0000000..acddfb8 --- /dev/null +++ b/packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value/TestObjCDynamicValue.py @@ -0,0 +1,177 @@ +""" +Use lldb Python API to test dynamic values in ObjC +""" + +from __future__ import print_function + + + +import os, time +import re +import lldb +import lldbsuite.test.lldbutil as lldbutil +from lldbsuite.test.lldbtest import * + +class ObjCDynamicValueTestCase(TestBase): + + mydir = TestBase.compute_mydir(__file__) + + def setUp(self): + # Call super's setUp(). + TestBase.setUp(self) + + # Find the line number to break for main.c. + + self.source_name = 'dynamic-value.m' + self.set_property_line = line_number(self.source_name, '// This is the line in setProperty, make sure we step to here.') + self.handle_SourceBase = line_number(self.source_name, + '// Break here to check dynamic values.') + self.main_before_setProperty_line = line_number(self.source_name, + '// Break here to see if we can step into real method.') + + @skipUnlessDarwin + @add_test_categories(['pyapi']) + @expectedFailureDarwin("llvm.org/pr20271 rdar://18684107") + def test_get_objc_dynamic_vals(self): + """Test fetching ObjC dynamic values.""" + if self.getArchitecture() == 'i386': + # rdar://problem/9946499 + self.skipTest("Dynamic types for ObjC V1 runtime not implemented") + + self.build() + exe = os.path.join(os.getcwd(), "a.out") + + # Create a target from the debugger. + + target = self.dbg.CreateTarget (exe) + self.assertTrue(target, VALID_TARGET) + + # Set up our breakpoints: + + handle_SourceBase_bkpt = target.BreakpointCreateByLocation(self.source_name, self.handle_SourceBase) + self.assertTrue(handle_SourceBase_bkpt and + handle_SourceBase_bkpt.GetNumLocations() == 1, + VALID_BREAKPOINT) + + main_before_setProperty_bkpt = target.BreakpointCreateByLocation(self.source_name, self.main_before_setProperty_line) + self.assertTrue(main_before_setProperty_bkpt and + main_before_setProperty_bkpt.GetNumLocations() == 1, + VALID_BREAKPOINT) + + # Now launch the process, and do not stop at the entry point. + process = target.LaunchSimple (None, None, self.get_process_working_directory()) + + self.assertTrue(process.GetState() == lldb.eStateStopped, + PROCESS_STOPPED) + + threads = lldbutil.get_threads_stopped_at_breakpoint (process, main_before_setProperty_bkpt) + self.assertTrue (len(threads) == 1) + thread = threads[0] + + # + # At this point, myObserver has a Source pointer that is actually a KVO swizzled SourceDerived + # make sure we can get that properly: + + frame = thread.GetFrameAtIndex(0) + myObserver = frame.FindVariable('myObserver', lldb.eDynamicCanRunTarget) + self.assertTrue (myObserver) + myObserver_source = myObserver.GetChildMemberWithName ('_source', lldb.eDynamicCanRunTarget) + self.examine_SourceDerived_ptr (myObserver_source) + + # + # Make sure a static value can be correctly turned into a dynamic value. + + frame = thread.GetFrameAtIndex(0) + myObserver_static = frame.FindVariable('myObserver', lldb.eNoDynamicValues) + self.assertTrue (myObserver_static) + myObserver = myObserver_static.GetDynamicValue (lldb.eDynamicCanRunTarget) + myObserver_source = myObserver.GetChildMemberWithName ('_source', lldb.eDynamicCanRunTarget) + self.examine_SourceDerived_ptr (myObserver_source) + + # The "frame var" code uses another path to get into children, so let's + # make sure that works as well: + + result = lldb.SBCommandReturnObject() + + self.expect('frame var -d run-target myObserver->_source', 'frame var finds its way into a child member', + patterns = ['\(SourceDerived \*\)']) + + # check that our ObjC GetISA() does a good job at hiding KVO swizzled classes + + self.expect('frame var -d run-target myObserver->_source -T', 'the KVO-ed class is hidden', + substrs = ['SourceDerived']) + + self.expect('frame var -d run-target myObserver->_source -T', 'the KVO-ed class is hidden', matching = False, + substrs = ['NSKVONotify']) + + # This test is not entirely related to the main thrust of this test case, but since we're here, + # try stepping into setProperty, and make sure we get into the version in Source: + + thread.StepInto() + + threads = lldbutil.get_stopped_threads (process, lldb.eStopReasonPlanComplete) + self.assertTrue (len(threads) == 1) + line_entry = threads[0].GetFrameAtIndex(0).GetLineEntry() + + self.assertEqual (line_entry.GetLine(), self.set_property_line) + self.assertEqual (line_entry.GetFileSpec().GetFilename(), self.source_name) + + # Okay, back to the main business. Continue to the handle_SourceBase and make sure we get the correct dynamic value. + + threads = lldbutil.continue_to_breakpoint (process, handle_SourceBase_bkpt) + self.assertTrue (len(threads) == 1) + thread = threads[0] + + frame = thread.GetFrameAtIndex(0) + + # Get "object" using FindVariable: + + noDynamic = lldb.eNoDynamicValues + useDynamic = lldb.eDynamicCanRunTarget + + object_static = frame.FindVariable ('object', noDynamic) + object_dynamic = frame.FindVariable ('object', useDynamic) + + # Delete this object to make sure that this doesn't cause havoc with the dynamic object that depends on it. + del (object_static) + + self.examine_SourceDerived_ptr (object_dynamic) + + # Get "this" using FindValue, make sure that works too: + object_static = frame.FindValue ('object', lldb.eValueTypeVariableArgument, noDynamic) + object_dynamic = frame.FindValue ('object', lldb.eValueTypeVariableArgument, useDynamic) + del (object_static) + self.examine_SourceDerived_ptr (object_dynamic) + + # Get "this" using the EvaluateExpression: + object_static = frame.EvaluateExpression ('object', noDynamic) + object_dynamic = frame.EvaluateExpression ('object', useDynamic) + del (object_static) + self.examine_SourceDerived_ptr (object_dynamic) + + # Continue again to the handle_SourceBase and make sure we get the correct dynamic value. + # This one looks exactly the same, but in fact this is an "un-KVO'ed" version of SourceBase, so + # its isa pointer points to SourceBase not NSKVOSourceBase or whatever... + + threads = lldbutil.continue_to_breakpoint (process, handle_SourceBase_bkpt) + self.assertTrue (len(threads) == 1) + thread = threads[0] + + frame = thread.GetFrameAtIndex(0) + + # Get "object" using FindVariable: + + object_static = frame.FindVariable ('object', noDynamic) + object_dynamic = frame.FindVariable ('object', useDynamic) + + # Delete this object to make sure that this doesn't cause havoc with the dynamic object that depends on it. + del (object_static) + + self.examine_SourceDerived_ptr (object_dynamic) + + def examine_SourceDerived_ptr (self, object): + self.assertTrue (object) + self.assertTrue (object.GetTypeName().find ('SourceDerived') != -1) + derivedValue = object.GetChildMemberWithName ('_derivedValue') + self.assertTrue (derivedValue) + self.assertTrue (int (derivedValue.GetValue(), 0) == 30) diff --git a/packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value/dynamic-value.m b/packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value/dynamic-value.m new file mode 100644 index 0000000..2bcb76b --- /dev/null +++ b/packages/Python/lldbsuite/test/lang/objc/objc-dynamic-value/dynamic-value.m @@ -0,0 +1,147 @@ +#import <Foundation/Foundation.h> + +// SourceBase will be the base class of Source. We'll pass a Source object into a +// function as a SourceBase, and then see if the dynamic typing can get us through the KVO +// goo and all the way back to Source. + +@interface SourceBase: NSObject +{ + uint32_t _value; +} +- (SourceBase *) init; +- (uint32_t) getValue; +@end + +@implementation SourceBase +- (SourceBase *) init +{ + [super init]; + _value = 10; + return self; +} +- (uint32_t) getValue +{ + return _value; +} +@end + +// Source is a class that will be observed by the Observer class below. +// When Observer sets itself up to observe this property (in initWithASource) +// the KVO system will overwrite the "isa" pointer of the object with the "kvo'ed" +// one. + +@interface Source : SourceBase +{ + int _property; +} +- (Source *) init; +- (void) setProperty: (int) newValue; +@end + +@implementation Source +- (Source *) init +{ + [super init]; + _property = 20; + return self; +} +- (void) setProperty: (int) newValue +{ + _property = newValue; // This is the line in setProperty, make sure we step to here. +} +@end + +@interface SourceDerived : Source +{ + int _derivedValue; +} +- (SourceDerived *) init; +- (uint32_t) getValue; +@end + +@implementation SourceDerived +- (SourceDerived *) init +{ + [super init]; + _derivedValue = 30; + return self; +} +- (uint32_t) getValue +{ + return _derivedValue; +} +@end + +// Observer is the object that will watch Source and cause KVO to swizzle it... + +@interface Observer : NSObject +{ + Source *_source; +} ++ (Observer *) observerWithSource: (Source *) source; +- (Observer *) initWithASource: (Source *) source; +- (void) observeValueForKeyPath: (NSString *) path + ofObject: (id) object + change: (NSDictionary *) change + context: (void *) context; +@end + +@implementation Observer + ++ (Observer *) observerWithSource: (Source *) inSource; +{ + Observer *retval; + + retval = [[Observer alloc] initWithASource: inSource]; + return retval; +} + +- (Observer *) initWithASource: (Source *) source +{ + [super init]; + _source = source; + [_source addObserver: self + forKeyPath: @"property" + options: (NSKeyValueObservingOptionNew | NSKeyValueObservingOptionOld) + context: NULL]; + return self; +} + +- (void) observeValueForKeyPath: (NSString *) path + ofObject: (id) object + change: (NSDictionary *) change + context: (void *) context +{ + printf ("Observer function called.\n"); + return; +} +@end + +uint32_t +handle_SourceBase (SourceBase *object) +{ + return [object getValue]; // Break here to check dynamic values. +} + +int main () +{ + Source *mySource; + Observer *myObserver; + + NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; + + mySource = [[SourceDerived alloc] init]; + myObserver = [Observer observerWithSource: mySource]; + + [mySource setProperty: 5]; // Break here to see if we can step into real method. + + uint32_t return_value = handle_SourceBase (mySource); + + SourceDerived *unwatchedSource = [[SourceDerived alloc] init]; + + return_value = handle_SourceBase (unwatchedSource); + + [pool release]; + return 0; + +} |
