程序停止使用数组中的太多文件

时间:2015-07-09 12:41:26

标签: objective-c if-statement sigabrt

我编写了这个搜索程序,用于搜索包含文件名和计算机文件路径的对象数组。当我编写程序时,我有两个测试文件可以很好地处理我的代码。然后我开始添加实际文件,并且它可以正常使用10-20个文件,因此我决定添加更多(大约45个,总共大约60个文件)。这是出错了;该程序运行,但我无法搜索任何文件而没有获得"线程1:信号SIGABRT"错误,就行是我的搜索功能。我也在控制台中收到错误消息,但我担心自己无法理解。当我只有10个文件时,如果文件是可搜索的并不重要,当我使用所有文件时它就会停止工作。我在下面提供了我的代码:

SMADoc.h(用于创建PDF' s的对象的自定义类)

#import <Foundation/Foundation.h>

@interface SMADoc : NSObject

@property (nonatomic) NSNumber *docNumber
@property (nonatomic) NSString *urlToDoc;

@end

main.m(包含5个文件)

#import <Foundation/Foundation.h>
#import "SMADoc.h"
#include <readline/readline.h>
@import AppKit;

void *documentSearch() {
SMADoc *one = [[SMADoc alloc] init];
[one setdocNumber:@(17800)];
[one setUrlToDoc:@"/Users/Docs/docPath1.pdf"];

SMADoc *two = [[SMADoc alloc] init];
[two setdocNumber:@(11632)];
[two setUrlToDoc:@"/Users/Docs/docPath2.pdf"];

SMADoc *three = [[SMADoc alloc] init];
[three setdocNumber:@(17583)];
[three setUrlToDoc:@"/Users/Docs/docPath3.pdf"];

SMADoc *four = [[SMADoc alloc] init];
[four setdocNumber:@(14351)];
[four setUrlToDoc:@"/Users/Docs/docPath4.pdf"];

SMADoc *five = [[SMADoc alloc] init];
[five setdocNumber:@(11628)];
[five setUrlToDoc:@"/Users/Docs/docPath5.pdf"];

NSMutableArray *docs = [[NSMutableArray alloc] initWithObjects:one, two, three, four, five, nil];

int i = 0;

NSLog(@"Enter what you want to search for: ");
const char *searchC = readline(NULL);
int number = atoi(searchC);
NSNumber *sNumber = [NSNumber numberWithInteger:number];

for (SMADoc *nSearch in docs) {
    if ([sNumber isEqualToNumber:[nSearch docNumber]]) {
        NSLog(@"Opening document...");
        [[NSWorkspace sharedWorkspace] openFile:[nSearch urlToDoc]];
    }
    if (![sNumber isEqualToNumber:[nSearch docNumber]]) {
        i++;
    }
}
if (i == [docs count]) {
    NSLog(@"A match could not be found, please check your spelling");
}
free(documentSearch());
documentSearch();

return 0;
}

int main(int argc, const char * argv[]) {
@autoreleasepool {
    NSLog(@"message");
    documentSearch();
}
return 0;
}

下面这一行得到了SIGABRT错误:

 if ([sNumber isEqualToNumber:[nSearch docNumber]]) {

这是控制台中的输出:

2015-07-09 14:28:25.047 LIX4[3537:108937] message
2015-07-09 14:28:25.049 LIX4[3537:108937] Enter what you want to search   for: 
1177880000

2015-07-09 14:28:27.505 LIX4[3537:108937] Opening document...
2015-07-09 14:28:27.633 LIX4[3537:108937] An uncaught exception was raised
2015-07-09 14:28:27.633 LIX4[3537:108937] -[__NSCFNumber compare:]: nil argument
2015-07-09 14:28:27.633 LIX4[3537:108937] (
    0   CoreFoundation                      0x00007fff8b8ae03c     __exceptionPreprocess + 172
    1   libobjc.A.dylib                     0x00007fff8ef9076e     objc_exception_throw + 43
    2   CoreFoundation                      0x00007fff8b8adeed +    [NSException raise:format:] + 205
    3   CoreFoundation                      0x00007fff8b7ab031 -    [__NSCFNumber compare:] + 81
    4   CoreFoundation                      0x00007fff8b7aafc8 -    [__NSCFNumber isEqualToNumber:] + 24
    5   LIX4                                0x0000000100004a3a     documentSearch + 14490
    6   LIX4                                0x0000000100005355 main + 53   
    7   libdyld.dylib                       0x00007fff8fb6f5c9 start + 1
)
2015-07-09 14:28:27.634 LIX4[3537:108937] *** Terminating app due to   uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFNumber     compare:]: nil argument'
*** First throw call stack:
(
    0   CoreFoundation                      0x00007fff8b8ae03c     __exceptionPreprocess + 172
    1   libobjc.A.dylib                     0x00007fff8ef9076e     objc_exception_throw + 43
    2   CoreFoundation                      0x00007fff8b8adeed +[NSException raise:format:] + 205
    3   CoreFoundation                      0x00007fff8b7ab031 -[__NSCFNumber compare:] + 81
    4   CoreFoundation                      0x00007fff8b7aafc8 -[__NSCFNumber isEqualToNumber:] + 24
    5   LIX4                                0x0000000100004a3a     documentSearch + 14490
    6   LIX4                                0x0000000100005355 main + 53
    7   libdyld.dylib                       0x00007fff8fb6f5c9 start + 1
)
    libc++abi.dylib: terminating with uncaught exception of type     NSException
    (lldb) 

如果有人能帮我解决这个问题,我将非常感激!

3 个答案:

答案 0 :(得分:0)

您的对象是否包含数字? ,我感觉

[nSearch docNumber]

必须为零,即它崩溃

答案 1 :(得分:0)

不是你的问题的答案,而是在关于无限循环的评论中引用我们的对话。你的是递归的,永远不会结束。到时候你会遇到堆栈溢出。 这是达到同样目的的正确方法:

    int main(int argc, const char * argv[]) {
    while (true) {
      @autoreleasepool {
        documentSearch();
      }
    }
    return 0;
}

请注意@autoreleasepool在循环内。

答案 2 :(得分:0)

我解决了! MacRumors的人帮助我解决了我的问题!我打开了我的程序的两个版本;有60个文件不断崩溃的文件和有5个文件的文件(我在这里发布的代码)并设置了一个断点

if ([sNumber isEqualToNumber:[nSearch docNumber]])

在两个版本中然后检查变量,我发现了一些错误的东西。我发现sNumber变量的值(用户输入的内容)有时会存储在double而不是int中,这就是问题!我通过使用变量号而不是sNumber解决了这个问题(因为那已经是一个int)并替换了这段代码:

if ([sNumber isEqualToNumber:[nSearch docNumber]]) {

    [...]

if (![sNumber isEqualToNumber:[nSearch docNumber]]) {

用这个:

if (number == [[nSearch docNumber] intValue]) {

    [...]


(!(number == [[nSearch docNumber] intValue])) {

这解决了这个问题!

编辑:如果有兴趣的话,这是MacRumors线程的链接:http://forums.macrumors.com/threads/comparing-two-numbers-causes-error.1900677/