问题
App crashes immediately after I attempt to login so it can’t a be a watchdog memory issue
Reason: _mh_execute_header App crashes upon attempting to make a network request using ASIHTTPRequest. Request never touches server. ASIHTTPRequest: I use -fno-objc-arc to omit ASIHTTPRequest from ARC.
I believe that the following call is causing my problems since my call never even touches the server when I make a request. Any help would be greatly appreciated!
Call:
NSDictionary *response = [[NetworkManager sharedManager] loginWithName:name password:pwd];
Method:
- (NSDictionary *)loginWithName:(NSString *)name password:(NSString *)pwd
{
NSURL *url = [NSURL URLWithString:@"http://www.test.com/keys"];
NSArray *values = [NSArray arrayWithObjects:@"iphone", @"iphone@test.com", name, pwd, nil];
NSArray *keys = [NSArray arrayWithObjects:@"name", @"email", @"username", @"password", nil];
NSDictionary *response = [self startNetworkPOSTRequestWithUrl:url
postValues:values
forKeys:keys];
return response;
}
Stack Trace:
Thread: Unknown Name (Crashed)
0 libobjc.A.dylib 0x37b9ef7e objc_msgSend + 21
1 Test 0x000dcda5 _mh_execute_header + 126373
2 Test 0x000dc4b9 _mh_execute_header + 124089
3 Test 0x000cd801 _mh_execute_header + 63489
4 Test 0x000ce39d _mh_execute_header + 66461
5 Test 0x000cf561 _mh_execute_header + 71009
6 Test 0x000d3e3d _mh_execute_header + 89661
7 UIKit 0x3334ccbd -[UITextField keyboardInput:shouldInsertText:isMarkedText:] + 148
8 UIKit 0x3334cc1f -[UIFieldEditor keyboardInput:shouldInsertText:isMarkedText:] + 94
9 UIKit 0x3334cbb9 -[UIKeyboardImpl callShouldInsertText:] + 108
10 UIKit 0x3334bb5b -[UIKeyboardImpl addInputString:fromVariantKey:] + 114
11 UIKit 0x3334bae1 -[UIKeyboardImpl handleStringInput:fromVariantKey:] + 164
12 UIKit 0x3334a775 -[UIKeyboardImpl handleKeyEvent:] + 1320
13 UIKit 0x334e48a3 -[UIKeyboardLayoutStar sendStringAction:forKey:isPopupVariant:] + 486
14 UIKit 0x33348dcd -[UIKeyboardLayoutStar touchUp:] + 3196
15 UIKit 0x333480fd -[UIKeyboardLayout touchesEnded:withEvent:] + 380
16 UIKit 0x3324b92b -[UIWindow _sendTouchesForEvent:] + 318
17 UIKit 0x3324b319 -[UIWindow sendEvent:] + 380
18 UIKit 0x33231695 -[UIApplication sendEvent:] + 356
19 UIKit 0x33230f3b _UIApplicationHandleEvent + 5826
20 GraphicsServices 0x373f022b PurpleEventCallback + 882
21 CoreFoundation 0x357d1523 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 38
22 CoreFoundation 0x357d14c5 __CFRunLoopDoSource1 + 140
23 CoreFoundation 0x357d0313 __CFRunLoopRun + 1370
24 CoreFoundation 0x357534a5 CFRunLoopRunSpecific + 300
25 CoreFoundation 0x3575336d CFRunLoopRunInMode + 104
26 GraphicsServices 0x373ef439 GSEventRunModal + 136
27 UIKit 0x3325fcd5 UIApplicationMain + 1080
28 Test 0x000bfc1b _mh_execute_header + 7195
Contents of the startNetworkPOSTRequestWithUrl method:
- (NSDictionary *)startNetworkPOSTRequestWithUrl:(NSURL *)url
postValues:(NSArray *)values
forKeys:(NSArray *)keys
{
NSLog(@"saved user info: %@", values);
__unsafe_unretained __block ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
__block NSDictionary *response;
int num = [values count];
__block BOOL success = YES;
for (int i = 0; i < num; i++)
{
[request setPostValue:[values objectAtIndex:i] forKey:[keys objectAtIndex:i]];
}
[request setDelegate:self];
[request setUseCookiePersistence:NO];
[request setCompletionBlock:^{
NSString *responseString = [request responseString];
response = [responseString JSONValue];
}];
[request setFailedBlock:^{
NSError *error = [request error];
NSLog(@"\nError: %@", error.localizedDescription);
NSString *responseString = [request responseString];
NSLog(@"\nError Response: %@", responseString);
NSLog(@"\nurl: %@",url);
success = NO;
}];
[request startSynchronous];
if (success == NO)
{
return nil;
}
if (![(NSString *)[response valueForKey:@"status"] isEqualToString:@"success"])
{
NSLog(@"response: %@",response);
return nil;
}
return (NSDictionary *)[response valueForKey:@"response"];
}
回答1:
I found another odd workaround that's solving some of my problems:
Under Target > Build Settings > Apple LLVM compiler 4.0 - Code Generation > Optimization Level I changed Ad Hoc Optimization to None - away from the default Fastest, Smallest [-Os] and this allows me to create a working ipa.
While this does provide a workaround it's less than ideal considering there may be other consequences of me doing no optimization.
But I do think this hints that some of my underlying problems are memory related - can anyone provide any insights into this?
回答2:
You're doing a synchronous request, so you don't need the failure blocks or completion blocks. That will get rid of all of the __block stuff and make it a bit less weird memory wise.
- (IBAction)grabURL:(id)sender
{
NSURL *url = [NSURL URLWithString:@"http://allseeing-i.com"];
ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
[request startSynchronous];
NSError *error = [request error];
if (!error) {
NSString *response = [request responseString];
}
}
I got that from the top of http://allseeing-i.com/ASIHTTPRequest/How-to-use
回答3:
Thanks Randall. startSynchronous may be a bit of a misnomer. Here is the method definition:
- (void)startSynchronous
{
#if DEBUG_REQUEST_STATUS || DEBUG_THROTTLING
ASI_DEBUG_LOG(@"[STATUS] Starting synchronous request %@",self);
#endif
[self setSynchronous:YES];
[self setRunLoopMode:ASIHTTPRequestRunLoopMode];
[self setInProgress:YES];
if (![self isCancelled] && ![self complete]) {
[self main];
while (!complete) {
[[NSRunLoop currentRunLoop] runMode:[self runLoopMode] beforeDate:[NSDate distantFuture]];
}
}
[self setInProgress:NO];
}
来源：https://stackoverflow.com/questions/12060211/ad-hoc-iphone-sigsegv-crash-while-debug-on-device-simulator-works