内存泄漏所以我觉得这是一种很难的问题的正确要求,但这里是我最好的拍摄。与声音合成
我正在写obj-c中的iPhone应用程序,但它涉及声音合成,并且我在核心音频中使用了声音合成程序编写了我认为是C(或者C++,我问了我认识的人谁使用C++,但他不认识它,但教程告诉我要将文件名更改为.mm for C++)。出现的问题是我有大量内存泄漏,很可能是因为我不知道如何正确调用内容。
当曾经被使用的代码的这一部分,我得到一吨的错误读取这样的: 2011-08-23 10:18:08.769 myProgram [451:5e03] * __NSAutoreleaseNoPool():对象_NSCallStackArray类的0x171e90自动释放,没有池到位 - 只是泄漏
使用工具,我已经找到泄漏发生的地方,并且已经发表了一条评论来表示这一点。
这里是所有泄漏拿出功能:
static OSStatus renderInput(void *inRefCon, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList *ioData)
{
// Get a reference to the object that was passed with the callback
// In this case, the AudioController passed itself so
// that you can access its data.
AudioController *THIS = (AudioController*)inRefCon;
// Get a pointer to the dataBuffer of the AudioBufferList
AudioSampleType *outA = (AudioSampleType *)ioData->mBuffers[0].mData;
// Calculations to produce a 600 Hz sinewave
// A constant frequency value, you can pass in a reference vary this.
float sinSignal;
for (UInt32 i = 0; i < inNumberFrames; ++i) {
outA[i] = 0;
}
THIS->theBall = [[THIS->navDelegate ballsG] objectAtIndex:0];
THIS->amtPlaying = [[THIS->theBall playingLines] count];
//NSLog(@"%i", THIS->amtPlaying);
for (int i = 0; i < THIS->amtPlaying; i++)
{
// Loop through the callback buffer, generating samples
for (UInt32 i = 0; i < inNumberFrames; ++i) {
// calculate the next sample
sinSignal = sin( [[[THIS->theBall playingLines] objectAtIndex:i] theta] ); //leak here
sinSignal *= [[[THIS->theBall playingLines] objectAtIndex:i] volume] ;
sinSignal /= THIS->amtPlaying;
// Put the sample into the buffer
// Scale the -1 to 1 values float to
// -32767 to 32767 and then cast to an integer
outA[i] += (SInt16)(sinSignal * 32767.0f);
// calculate the phase for the next sample
[[[THIS->theBall playingLines] objectAtIndex:i] increaseTheta: [[[THIS->theBall playingLines] objectAtIndex:i] incrementer]];
}
}
return noErr;
}
如果我可以提供更多的信息,以帮助你理解我的问题,请让我知道在评论。谢谢!
如果你正在尝试做你处理,你需要在函数的开头添加一个'NSAutoreleasePool *池= [[NSAutoreleasePool的alloc]初始化]'然后'[池排水]'在年底由于背景你正在使用可能的自动释放对象。 ('ballsG','objectAtIndex:','playingLines') – Joe
这摆脱了其他的泄漏,现在的仪器显示,我泄露NSAutoReleasePool。 – turbo
你加入'[池排水]'权之前'返回诺尔;'?另外,当你启动一个新线程时,无论哪种方法被调用,'NSAutoreleasePool'应该是在那里创建的第一个东西,那么最后完成的事情应该是用同样的方法'排除'它。 – Joe