hadhi631

@implementation TestMutex {
    dispatch_semaphore_t sem;
    dispatch_queue_t queue_1;
    dispatch_queue_t queue_2;
    dispatch_queue_t queue_3;
    dispatch_queue_t queue_4;
}

- (instancetype)init {
    if (self = [super init]) {

hadhi631

@implementation TestMutex {
    NSObject *mutex_1;
    NSObject *mutex_2;
}

- (instancetype)init {
    if (self = [super init]) {
        mutex_1 = [NSObject new];
        mutex_2 = [NSObject new];
    }

hadhi631

@implementation TestMutex

- (void)firstMethod {
    @synchronized(self) {
        // Your code here
    }
}

- (void)secondMethod {
    @synchronized(self) {

hadhi631

@implementation TestMutex {
    NSRecursiveLock *recLock;
}

- (instancetype)init {
    if (self = [super init]) {
        
        // Initialize the mutex
        recLock = [[NSRecursiveLock alloc] init];
    }

hadhi631

@implementation TestMutex {
    BOOL isProcessing;
    NSLock *lock;
}

- (instancetype)init {
    if (self = [super init]) {
        
        // Initialize the mutex
        isProcessing = YES;

hadhi631

#import <pthread/pthread.h>

@implementation TestMutex {
    pthread_mutex_t mutex;
}

- (instancetype)init {
    if (self = [super init]) {
        
        // Initialize the mutex

hadhi631

p.firstName = @"Saddham";
p.lastName = @"Hussain";
NSString *fullName_2 = [p fullName];

hadhi631

p.firstName = @"Jack";
p.lastName = @"Daniel";
NSString *fullName_1 = [p fullName];

hadhi631

@interface Person : NSObject
  
@property(copy) NSString *firstName;
@property(copy) NSString *lastName;

- (NSString *)fullName;

@end

hadhi631

static inline void reallySetProperty(id self, SEL _cmd, id newValue, 
      ptrdiff_t offset, bool atomic, bool copy, bool mutableCopy) 
    {
        id oldValue;
        id *slot = (id*) ((char*)self + offset);

        if (copy) {
            newValue = [newValue copyWithZone:NULL];
        } else if (mutableCopy) {
            newValue = [newValue mutableCopyWithZone:NULL];