Objective c 寻找漏洞

我仍然在处理我的泄漏问题，我不知道如何解决这个问题。我在每个arrayTmp addObject行上都有泄漏

NSMutableArray *arrayTmp= [[NSMutableArray alloc] init];


[arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"1", @"value", @"Value 1", @"name", nil]];
[arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"2", @"value", @"Value 2", @"name", nil]];
[arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"3", @"value", @"Value 3", @"name", nil]];
[arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"4", @"value", @"Value 4", @"name", nil]];
//add arrayTmp to an object to use later
[arrayTmp release];
arrayTmp=nil;

arrayTmp= [[NSMutableArray alloc] init];

[arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"1", @"value", @"other value 1", @"name", nil]];
[arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"2", @"value", @"other value 2", @"name", nil]];
//add arrayTmp to an object to use later
[arrayTmp release];
arrayTmp=nil;
...

---

这里是我的过滤器类的代码

@implementation Filter

@synthesize label;
@synthesize valueIndex;
@synthesize listValue;
@synthesize webServiceFieldName;

-(id) initWithLabel:(NSString *)plabel AndValue:(int)pvalueIndex AndListValue:(NSMutableArray *)plistValue AndWebServiceFieldName:(NSString *)pwebServiceFieldName {

self = [super init];

if (self != nil) {
    self.label = plabel;
    self.valueIndex = pvalueIndex;
    self.listValue = plistValue;
    self.webServiceFieldName = pwebServiceFieldName;

}
return self;
}

@end

这意味着您将arrayTmp推入一个对象并保留它。截取的代码在其他方面都很好，但我敢打赌漏洞就存在于该方法中

发布方法的代码（顺便说一句，应该是-initWithLabel:value:listValue:webServiceFieldName:如果要遵循Obj-C的命名约定），该方法存储arrayTmp和释放它的代码

在Instruments中，您应该能够使用Object Alloc instrument查看数组实例。点击任何一个地址，都会显示该地址的分配/保留/释放/解除分配事件列表。通过展开窗口右侧的“更多信息”窗格（通过底部的一个小按钮），可以看到任何给定事件的堆栈跟踪

从下面的代码中，初始值设定项设置IVAR，包括传入的tmpArray：

    self.label = plabel;
    self.valueIndex = pvalueIndex;
    self.listValue = plistValue;
    self.webServiceFieldName = pwebServiceFieldName;

但是，我没有看到-dealloc方法

假设您的属性是使用

retain

或

copy

声明的，那么您的dealloc应该如下所示：

- (void) dealloc
{
    [label release];
    [listValue release];
    [webServiceFileName release];
    [super dealloc];
}

---

您必须确保在解除锁定此对象时释放了合成的成员变量——这不会自动为您完成。例如：

- (void)dealloc
{
    [label release];
    [listValue release];
    [webServiceFieldName release];

    [super dealloc];
}

---

好的，我做了这些改动，但这些管线上仍然有十几处泄漏 这是我的代码示例

-(id)initSearchFilters{
    self = [super init];


    if ( self ) {

    //init the search filters array
    self.searchFilters = [[NSMutableArray alloc] init];
    SearchCriteria *searchCriteriaTmp;
    Filter *filterTmp1;
    Filter *filterTmp2;
    NSMutableArray *arrayTmp= [[NSMutableArray alloc] init];

    //Price Range
    arrayTmp = [[NSMutableArray alloc] init];

    [arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"any", @"value", @"any", @"name", nil]];
    [arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"100", @"value", @"$100", @"name", nil]];
    [arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"200", @"value", @"$200", @"name", nil]];
    [arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"300", @"value", @"$300", @"name", nil]];
    [arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"400", @"value", @"$400", @"name", nil]];
    [arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"500", @"value", @"$500", @"name", nil]];


    filterTmp1 = [[Filter alloc] initWithLabel:@"Minimum Price" AndValue:0 AndListValue:arrayTmp AndWebServiceFieldName:@"price_min"];
    filterTmp2 = [[Filter alloc] initWithLabel:@"Maximum Price" AndValue:0 AndListValue:arrayTmp AndWebServiceFieldName:@"price_max"];
    searchCriteriaTmp = [[SearchCriteria alloc] initWithFilter1:filterTmp1 AndFilter2:filterTmp2 AndLabelSearchCriteria:@"Price Range" AndEnabled:NO];
    [self.searchFilters addObject:searchCriteriaTmp];
    [arrayTmp release];
    arrayTmp=nil;
    [filterTmp1 release];
    filterTmp1=nil;
    [filterTmp2 release];
    filterTmp2=nil;
    [searchCriteriaTmp release];
    searchCriteriaTmp=nil;

    //Item
    arrayTmp = [[NSMutableArray alloc] init];

    [arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"1", @"value", @"item 1", @"name", nil]];
    [arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"2", @"value", @"item 2", @"name", nil]];
    [arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"3", @"value", @"item 3", @"name", nil]];
    [arrayTmp addObject:[NSDictionary dictionaryWithObjectsAndKeys:@"4", @"value", @"item 4", @"name", nil]];

    filterTmp1 = [[Filter alloc] initWithLabel:@"Item" AndValue:0 AndListValue:arrayTmp AndWebServiceFieldName:@"item"];
    searchCriteriaTmp = [[SearchCriteria alloc] initWithFilter1:filterTmp1 AndFilter2:nil AndLabelSearchCriteria:@"Item" AndEnabled:NO];
    [self.searchFilters addObject:searchCriteriaTmp];
    [arrayTmp release];
    arrayTmp=nil;
    [filterTmp1 release];
    filterTmp1=nil;
    [searchCriteriaTmp release];
    searchCriteriaTmp=nil;
    }
    return self;
}

---

和我的搜索条件类

-(id)initWithFilter1:(Filter *)pFilter1 AndFilter2:(Filter *)pFilter2 AndLabelSearchCriteria:(NSString *)pLabelSearchCriteria AndEnabled:(BOOL)pEnabled{

self = [super init];

if (self != nil) {
    self.filter1 = pFilter1;
    self.filter2 = pFilter2;
    self.labelSearchCriteria = pLabelSearchCriteria;
    self.enabled =pEnabled;
}
return self;
}

- (void)dealloc
{
[filter1 release];
[filter2 release];
[labelSearchCriteria release];
[super dealloc];
}

---

在上面的代码中，分配

SearchCriteria

和调用

initSearchFilters

的行将结果的

retainCount

设置为1。然后，当您通过

addObject

将该对象添加到

self.searchFilters

时，重新计数将跳到2。此时，您需要调用

[searchCriteriaTmp release]

将重新计数设置回1。当

self.searchFilters

被销毁时，

retainCount

将为0，对象将被解除分配。如果没有对

release

的额外调用，

retainCount

将始终为1，并且对象将永远不会释放，从而导致泄漏。

我没有看到任何泄漏。您使用的是什么？我使用xCode泄漏性能工具当我第二次调用此代码时出现泄漏如何将arrayTmp添加到对象以供以后使用？那里有实际的代码吗？如果有，是什么？这可能就是漏洞。。。此外，您不需要设置为零。例如，如果您有一个后续的[arrayTmp length]调用，将var设置为nil可能会防止崩溃。如果没有更广泛的上下文，我不会说它毫无意义。我会做一些类似FilterMP1=[[Filter alloc]initWithLabel:@“Filter 1”和Value:0以及ListValue:ArrayTemp和WebServiceFieldName:@“filter1”]；你忘了[超级解约]；最后，我多次调用initSearchFilters，因此我认为这是由于self.searchFilters=[[NSMutableArray alloc]init]行引起的；但是我可以把这条线放在哪里，这样它只能被调用一次？好的，我解决了它，这是由于对initSearchFilters的多次调用

-(id)initWithFilter1:(Filter *)pFilter1 AndFilter2:(Filter *)pFilter2 AndLabelSearchCriteria:(NSString *)pLabelSearchCriteria AndEnabled:(BOOL)pEnabled{

self = [super init];

if (self != nil) {
    self.filter1 = pFilter1;
    self.filter2 = pFilter2;
    self.labelSearchCriteria = pLabelSearchCriteria;
    self.enabled =pEnabled;
}
return self;
}

- (void)dealloc
{
[filter1 release];
[filter2 release];
[labelSearchCriteria release];
[super dealloc];
}