| Enrico Granata | eb4a479 | 2012-02-23 23:10:27 +0000 | [diff] [blame] | 1 | # summary provider for NSData |
| 2 | import lldb |
| 3 | import ctypes |
| 4 | import objc_runtime |
| 5 | import metrics |
| 6 | |
| 7 | statistics = metrics.Metrics() |
| 8 | statistics.add_metric('invalid_isa') |
| 9 | statistics.add_metric('invalid_pointer') |
| 10 | statistics.add_metric('unknown_class') |
| 11 | statistics.add_metric('code_notrun') |
| 12 | |
| 13 | # despite the similary to synthetic children providers, these classes are not |
| 14 | # trying to provide anything but the port number of an NSMachPort, so they need not |
| 15 | # obey the interface specification for synthetic children providers |
| 16 | class NSMachPortKnown_SummaryProvider: |
| 17 | def adjust_for_architecture(self): |
| Enrico Granata | 7bc0ec3 | 2012-02-29 03:28:49 +0000 | [diff] [blame] | 18 | self.is_64_bit = (self.valobj.GetTarget().GetProcess().GetAddressByteSize() == 8) |
| Enrico Granata | eb4a479 | 2012-02-23 23:10:27 +0000 | [diff] [blame] | 19 | self.is_little = (self.valobj.GetTarget().GetProcess().GetByteOrder() == lldb.eByteOrderLittle) |
| 20 | self.pointer_size = self.valobj.GetTarget().GetProcess().GetAddressByteSize() |
| 21 | |
| 22 | def __init__(self, valobj): |
| 23 | self.valobj = valobj; |
| 24 | self.update(); |
| 25 | |
| 26 | def update(self): |
| 27 | self.adjust_for_architecture(); |
| 28 | self.id_type = self.valobj.GetType().GetBasicType(lldb.eBasicTypeObjCID) |
| 29 | self.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedLong) |
| 30 | |
| 31 | # one pointer is the ISA |
| 32 | # then we have one other internal pointer, plus |
| 33 | # 4 bytes worth of flags. hence, these values |
| 34 | def offset(self): |
| Enrico Granata | 7bc0ec3 | 2012-02-29 03:28:49 +0000 | [diff] [blame] | 35 | if self.is_64_bit: |
| Enrico Granata | eb4a479 | 2012-02-23 23:10:27 +0000 | [diff] [blame] | 36 | return 20 |
| 37 | else: |
| 38 | return 12 |
| 39 | |
| 40 | def port(self): |
| 41 | vport = self.valobj.CreateChildAtOffset("port", |
| 42 | self.offset(), |
| 43 | self.NSUInteger) |
| 44 | return vport.GetValueAsUnsigned(0) |
| 45 | |
| 46 | |
| 47 | class NSMachPortUnknown_SummaryProvider: |
| 48 | def adjust_for_architecture(self): |
| Enrico Granata | 7bc0ec3 | 2012-02-29 03:28:49 +0000 | [diff] [blame] | 49 | self.is_64_bit = (self.valobj.GetTarget().GetProcess().GetAddressByteSize() == 8) |
| Enrico Granata | eb4a479 | 2012-02-23 23:10:27 +0000 | [diff] [blame] | 50 | self.is_little = (self.valobj.GetTarget().GetProcess().GetByteOrder() == lldb.eByteOrderLittle) |
| 51 | self.pointer_size = self.valobj.GetTarget().GetProcess().GetAddressByteSize() |
| 52 | |
| 53 | def __init__(self, valobj): |
| 54 | self.valobj = valobj; |
| 55 | self.update() |
| 56 | |
| 57 | def update(self): |
| 58 | self.adjust_for_architecture(); |
| 59 | self.id_type = self.valobj.GetType().GetBasicType(lldb.eBasicTypeObjCID) |
| 60 | |
| 61 | def port(self): |
| 62 | stream = lldb.SBStream() |
| 63 | self.valobj.GetExpressionPath(stream) |
| 64 | num_children_vo = self.valobj.CreateValueFromExpression("port","(int)[" + stream.GetData() + " machPort]"); |
| 65 | return num_children_vo.GetValueAsUnsigned(0) |
| 66 | |
| 67 | |
| 68 | def GetSummary_Impl(valobj): |
| 69 | global statistics |
| 70 | class_data = objc_runtime.ObjCRuntime(valobj) |
| 71 | if class_data.is_valid() == False: |
| 72 | statistics.metric_hit('invalid_pointer',valobj) |
| 73 | wrapper = None |
| 74 | return |
| 75 | class_data = class_data.read_class_data() |
| 76 | if class_data.is_valid() == False: |
| 77 | statistics.metric_hit('invalid_isa',valobj) |
| 78 | wrapper = None |
| 79 | return |
| 80 | if class_data.is_kvo(): |
| 81 | class_data = class_data.get_superclass() |
| 82 | if class_data.is_valid() == False: |
| 83 | statistics.metric_hit('invalid_isa',valobj) |
| 84 | wrapper = None |
| 85 | return |
| 86 | |
| 87 | name_string = class_data.class_name() |
| 88 | if name_string == 'NSMachPort': |
| 89 | wrapper = NSMachPortKnown_SummaryProvider(valobj) |
| 90 | statistics.metric_hit('code_notrun',valobj) |
| 91 | else: |
| 92 | wrapper = NSMachPortUnknown_SummaryProvider(valobj) |
| 93 | statistics.metric_hit('unknown_class',str(valobj) + " seen as " + name_string) |
| 94 | return wrapper; |
| 95 | |
| 96 | def NSMachPort_SummaryProvider (valobj,dict): |
| 97 | provider = GetSummary_Impl(valobj); |
| 98 | if provider != None: |
| 99 | try: |
| 100 | summary = provider.port(); |
| 101 | except: |
| 102 | summary = None |
| 103 | if summary == None: |
| 104 | summary = 'no valid mach port here' |
| 105 | return 'mach port: ' + str(summary) |
| 106 | return '' |
| 107 | |
| 108 | def __lldb_init_module(debugger,dict): |
| 109 | debugger.HandleCommand("type summary add -F NSMachPort.NSMachPort_SummaryProvider NSMachPort") |