Segfaultコード11は、おそらくObjective-C SingletonがSwiftプロジェクトで発生した可能性があります。

Question

私はオーディオファイルを再生するSwift iOSアプリケーションを作成しており、そのためにAmazing Audio Engine 2ライブラリを使用しています。

私はこのタスクを管理するためにシングルトンパターンを使用することに決めました。彼のSwiftサンプルプロジェクトでは、libの作成者であるMichael TysonがObjective-Cでオーディオ部分を演奏しました。 彼の説明ビデオはここにあります：https://www.youtube.com/watch?v=OZQT4IGS8mA 私は彼のリードに続き、私はObjective-Cで私のシングルトンをコーディングしました。ここで

が私のコードです：

AudioManager.h

#import <Foundation/Foundation.h> 
#import "TheAmazingAudioEngine/TheAmazingAudioEngine.h" 

@class Track; 

@interface AudioManager : NSObject { 
    NSString *test; 
} 

@property (nonatomic, strong) AEAudioUnitOutput *_Nonnull output; 
@property (nonatomic, strong) AERenderer *_Nonnull renderer; 
@property (nonatomic, strong) AEAudioFilePlayerModule *_Nullable currentTrackModule; 
@property (nonatomic) BOOL recording; 
@property (nonatomic) Track *_Nullable currentTrack; 

+ (_Nonnull id)defaultAudioManager; 
- (BOOL)startAudioController:(NSError *_Nullable *_Nullable)error; 
- (void)stopAudioController; 
- (void)prepareTrackModule; 
- (void)playCurrentTrack:(BOOL)loop; 

@end 

AudioManager.m

#import "AudioManager.h" 
#import "Project-Swift.h" 
@import AVFoundation; 

@implementation AudioManager 

//@synthesize someProperty; 

#pragma mark Singleton Methods 

+ (id)defaultAudioManager { 
    static AudioManager *defaultAudioManager = nil; 
    static dispatch_once_t onceToken; 
    dispatch_once(&onceToken, ^{ 
     defaultAudioManager = [[self alloc] init]; 
    }); 
    return defaultAudioManager; 
} 

- (id)init { 
    if (!(self = [super init])) return nil; 
    //someProperty = @"Default Property Value"; 
    self.renderer = [AERenderer new]; 
    self.output = [[AEAudioUnitOutput alloc] initWithRenderer:self.renderer]; 

    return self; 
} 

- (void)dealloc { 
    // Should never be called, but just here for clarity really. 
} 

- (BOOL)startAudioController:(NSError * _Nullable * _Nullable)error { 
    [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:NULL]; 

    return [self.output start:error]; 
} 

- (void)stopAudioController { 
    return [self.output stop]; 
} 

- (void)prepareTrackModule { 
    self.currentTrackModule = [[AEAudioFilePlayerModule alloc] initWithRenderer:self.renderer 
                URL:[[NSBundle mainBundle] 
                 URLForResource:@"amen"//self.currentTrack.name 
                 withExtension:@"m4a"] 
               error:NULL]; 
} 

- (void)playCurrentTrack:(BOOL)loop { 
    self.currentTrackModule.loop = loop; 
    [self.currentTrackModule playAtTime:0]; 
    __unsafe_unretained typeof(self) weakSelf = self; 
    self.renderer.block = ^(const AERenderContext *context) { 
     AEModuleProcess(weakSelf.currentTrackModule, context); 

     AEBufferStackMixToBufferList(context->stack, 1, 0, YES, context->output); 
    }; 
} 

@end 

AppDelegate.Swift

import UIKit 
import CoreData 

@UIApplicationMain 
class AppDelegate: UIResponder, UIApplicationDelegate { 

    var window: UIWindow? 

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool { 
     // Override point for customization after application launch. 

     do { 
      try AudioManager.defaultAudioManager().startAudioController() 
      //AudioManager.defaultAudioManager().prepareTrackModule() 
      //AudioManager.defaultAudioManager().playCurrentTrack(true) 
     } catch { 
      //Handle Error 
      print("error") 
     } 

     return true 
    } 

    func applicationWillResignActive(application: UIApplication) { 
     // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state. 
     // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game. 
    } 

    func applicationDidEnterBackground(application: UIApplication) { 
     // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 
     // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits. 
    } 

    func applicationWillEnterForeground(application: UIApplication) { 
     // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background. 
    } 

    func applicationDidBecomeActive(application: UIApplication) { 
     // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface. 
    } 

    func applicationWillTerminate(application: UIApplication) { 
     // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:. 
     // Saves changes in the application's managed object context before the application terminates. 
     self.saveContext() 
    } 
} 

私は行をコメントした場合私がコンパイルしようとすると、私のAppDelegate.swiftファイル内の10は、明らかにすべてが、そうでない場合は、Xcodeは私に、この非は非常に有用なエラー印刷作品：

0 swift     0x000000010411d4eb llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 43 
1 swift     0x000000010411c7d6 llvm::sys::RunSignalHandlers() + 70 
2 swift     0x000000010411db4f SignalHandler(int) + 287 
3 libsystem_platform.dylib 0x00007fff9a64352a _sigtramp + 26 
4 libsystem_platform.dylib 0x0000000000000001 _sigtramp + 1704708849 
5 swift     0x0000000101fba410 (anonymous namespace)::IRGenSILFunction::visitFullApplySite(swift::FullApplySite) + 2736 
6 swift     0x0000000101fa7c4b swift::irgen::IRGenModule::emitSILFunction(swift::SILFunction*) + 9787 
7 swift     0x0000000101f02fd8 swift::irgen::IRGenModuleDispatcher::emitGlobalTopLevel() + 600 
8 swift     0x0000000101f8ea5e performIRGeneration(swift::IRGenOptions&, swift::ModuleDecl*, swift::SILModule*, llvm::StringRef, llvm::LLVMContext&, swift::SourceFile*, unsigned int) + 1278 
9 swift     0x0000000101f8ef06 swift::performIRGeneration(swift::IRGenOptions&, swift::SourceFile&, swift::SILModule*, llvm::StringRef, llvm::LLVMContext&, unsigned int) + 70 
10 swift     0x0000000101e72a1c performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&) + 15004 
11 swift     0x0000000101e6e41d frontend_main(llvm::ArrayRef<char const*>, char const*, void*) + 2781 
12 swift     0x0000000101e69e3c main + 1932 
13 libdyld.dylib   0x00007fff996215ad start + 1 
14 libdyld.dylib   0x00000000000000bc start + 1721625360 
Stack dump: 

Command failed due to signal: Segmentation fault: 11

私はObjective-で何か欠けていると思います私が理解していない部分は、私はこの言語にあまり慣れていませんが、私は何がわかりません。 アイデア？

Answer 1

実際、startAudioController関数のパラメータを削除すると、segfaultが消えます。理由はわかりませんが、それは一時的な解決策になります。