我使用 CFStreamCreateBoundPair
创建一对流以上传大文件。代码如下。
let readStreamPointer = UnsafeMutablePointer<Unmanaged<CFReadStream>?>.alloc(1)
let writeStreamPointer = UnsafeMutablePointer<Unmanaged<CFWriteStream>?>.alloc(1)
let bufferSize = 1024*1024 //1M buffer size
CFStreamCreateBoundPair(kCFAllocatorDefault, readStreamPointer,writeStreamPointer, Int(bufferSize) as CFIndex)
if let rStream = readStreamPointer.memory?.takeRetainedValue(),writeStream = writeStreamPointer.memory?.takeRetainedValue() {
}
除内存问题外一切顺利。我使用 Instruments 检查并找出 CFStreamCreateBoundPair
在 CFReadStream
之后无法释放缓冲区大小的内存,在本例中为 1M和 CFWriteStream
已关闭。我也有屏幕截图。
最佳答案
这是我的做法:
class func createBound(inputStream: inout InputStream?, outputStream: inout OutputStream?, bufferSize: UInt) {
var readStream: Unmanaged<CFReadStream>?
var writeStream: Unmanaged<CFWriteStream>?
CFStreamCreateBoundPair(nil, &readStream, &writeStream, CFIndex(bufferSize))
if inputStream != nil {
inputStream = readStream!.takeUnretainedValue()
}
if outputStream != nil {
outputStream = writeStream!.takeUnretainedValue()
}
}
关于ios - CFStreamCreateBoundPair 不能释放,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37535767/