iOS应用程序分配越来越多的内存

Question

我正在开发一个 iOS 应用程序，它使用套接字连接与另一台设备共享屏幕。它运行良好，正在发送屏幕截图，但应用程序分配的内存不断增长，直到几秒钟后收到内存警告，然后它开始向接收服务器发送错误数据，导致服务器崩溃。这是我现在使用的代码:

• 我的主 ViewController.m 中的方法:

  -(void) activateShareScreen {
  newClient *nc = [[newClient alloc] init];
  [nc connectToServerUsingCFStream];
  dispatch_queue_t backgroundQueue = dispatch_queue_create("No", 0);
  dispatch_async(backgroundQueue, ^{
      while (true){
          @autoreleasepool {
          UIGraphicsBeginImageContext(mapView_.frame.size);
          [mapView_.layer renderInContext:UIGraphicsGetCurrentContext()];
          bitmap = UIGraphicsGetImageFromCurrentImageContext();
          UIGraphicsEndImageContext();
          }
          [nc writeToServer:UIImageJPEGRepresentation(bitmap, 50)];
      }
  });
  NSLog(@"Share screen button tapped");
  

• 它正在调用这个文件:

  #import "newClient.h"
  @implementation newClient {
  NSInputStream *iStream;
  NSOutputStream *oStream;
  
  CFReadStreamRef readStream;
  CFWriteStreamRef writeStream;
  
  BOOL boolean;
  -(无效)connectToServerUsingCFStream{
   
  CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault,
                                     (CFStringRef) @"192.168.1.9",
                                     8080,
                                     &readStream,
                                     &writeStream);
  
  if (readStream && writeStream) {
      //CFReadStreamSetProperty(readStream,
      //                        kCFStreamPropertyShouldCloseNativeSocket,
      //                        kCFBooleanTrue);
      //CFWriteStreamSetProperty(writeStream,
      //                        kCFStreamPropertyShouldCloseNativeSocket,
      //                        kCFBooleanTrue);
      iStream = (__bridge_transfer NSInputStream *)readStream;
      oStream = (__bridge_transfer NSOutputStream *)writeStream;
    //  [iStream setDelegate:self];
      //[iStream scheduleInRunLoop:[NSRunLoop currentRunLoop]
      //                   forMode:NSDefaultRunLoopMode];
      [iStream open];
  
     // [oStream setDelegate:self];
      //[oStream scheduleInRunLoop:[NSRunLoop currentRunLoop]
      //                   forMode:NSDefaultRunLoopMode];
      [oStream open];
     // data = UIImageJPEGRepresentation(bitmap, 50);
      boolean = YES;
  
      
  
       
  (void) writeToServer:(NSData *) 数据{ 国际长度； uint32_t 长度 = (uint32_t)htonl([数据长度]); //[oStream write:(const uint8_t *) "/n"maxLength:2]; //发送截图图像的长度，然后发送图像 len=[oStream write:(const uint8_t *)&length maxLength:4]; NSLog(@"len=%d",len); //[oStream write:(const uint8_t *) "/n"maxLength:2]; len=[oStream write:(const uint8_t *)[data bytes] maxLength:[data length]]; NSLog(@"len=%d",len); //[oStream write:(const uint8_t *)"/n"maxLength:0];
      
  /*- (void)stream:(NSStream *)stream handleEvent:(NSStreamEvent)eventCode{    开关(事件代码){        案例 NSStreamEventHasSpaceAvailable:            如果(流 == oStream){                dispatch_async(dispatch_get_main_queue(), ^{                    @autoreleasepool {
                       int len;
                      uint32_t length = (uint32_t)htonl([data length]);
  
                      // Sending out the length of the screenshot image and then the image
                      len=[oStream write:(const uint8_t *)&length maxLength:4];
                      NSLog(@"len=%d",len);
                      if (len<0) {
                          [oStream write:(const uint8_t *)[data bytes] maxLength:length];
                      }
                      [oStream write:(const uint8_t *)"/n" maxLength:0];
                  }
              });
  
          }
  }
   

只有我遇到过这种问题吗？我使用错误的方法吗？有什么解决问题的建议吗？

这是我在 Instruments 中运行应用程序时的屏幕截图:

Answer 1

@autoreleasepool {
    while (true){
       ...
    }
}

自动释放永远不会完成，它应该放在 while 循环中