feat: sync httpdns sdk/platform updates without large binaries

HttpDNSSDK/sdk/ios/NewHttpDNS/Utils/HttpDnsLocker.m

@@ -0,0 +1,91 @@
+//
+//  HttpDnsLocker.m
+//  TrustHttpDNS
+//
+//  Created by 王贇 on 2023/8/16.
+//  Copyright © 2023 trustapp.com. All rights reserved.
+//
+
+#import "HttpDnsLocker.h"
+#import "HttpdnsService.h"
+
+@implementation HttpDnsLocker {
+    NSMutableDictionary<NSString*, NSLock*> *_v4LockMap;
+    NSMutableDictionary<NSString*, NSLock*> *_v6LockMap;
+    NSMutableDictionary<NSString*, NSLock*> *_v4v6LockMap;
+}
+
++ (instancetype)sharedInstance {
+    static HttpDnsLocker *locker = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        locker = [[HttpDnsLocker alloc] init];
+    });
+    return locker;
+}
+
+- (instancetype)init {
+    if (self = [super init]) {
+        _v4LockMap = [NSMutableDictionary dictionary];
+        _v6LockMap = [NSMutableDictionary dictionary];
+        _v4v6LockMap = [NSMutableDictionary dictionary];
+    }
+    return self;
+}
+
+- (void)lock:(NSString *)host queryType:(HttpdnsQueryIPType)queryIpType {
+    NSLock *condition = [self getLock:host queryType:queryIpType];
+
+    if (condition) {
+        [condition lock];
+    }
+}
+
+- (BOOL)tryLock:(NSString *)host queryType:(HttpdnsQueryIPType)queryType {
+    NSLock *condition = [self getLock:host queryType:queryType];
+
+    if (condition) {
+        return [condition tryLock];
+    }
+    return NO;
+}
+
+- (void)unlock:(NSString *)host queryType:(HttpdnsQueryIPType)queryType {
+    NSLock *condition = [self getLock:host queryType:queryType];
+    if (condition) {
+        [condition unlock];
+    }
+}
+
+- (NSLock *)getLock:(NSString *)host queryType:(HttpdnsQueryIPType)queryType {
+    if (queryType == HttpdnsQueryIPTypeIpv4) {
+        @synchronized (_v4LockMap) {
+            NSLock *lock = [_v4LockMap objectForKey:host];
+            if (!lock) {
+                lock = [[NSLock alloc] init];
+                [_v4LockMap setObject:lock forKey:host];
+            }
+            return lock;
+        }
+    } else if (queryType == HttpdnsQueryIPTypeIpv6) {
+        @synchronized (_v6LockMap) {
+            NSLock *condition = [_v6LockMap objectForKey:host];
+            if (!condition) {
+                condition = [[NSLock alloc] init];
+                [_v6LockMap setObject:condition forKey:host];
+            }
+            return condition;
+        }
+    } else {
+        @synchronized (_v4v6LockMap) {
+            NSLock *condition = [_v4v6LockMap objectForKey:host];
+            if (!condition) {
+                condition = [[NSLock alloc] init];
+                [_v4v6LockMap setObject:condition forKey:host];
+            }
+            return condition;
+        }
+    }
+}
+
+@end