NSImage +内存管理
NSImage *randomImage = [[NSImage alloc] initWithContentsOfURL:imageURL];
[randomImage release];
为什么内存使用率仍然上升？什么在使用该内存？我释放 NSImage 对象。 （不，这不是网址）
NSImage *randomImage = [[NSImage alloc] initWithContentsOfURL:imageURL];
[randomImage release];
Why does the memory usage still go up? What is using that memory? I release the NSImage object. ( no, its not the URL )
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图像可能正在被缓存。看看
[img setCacheMode:]您是否真的尝试了 500 次或者您猜测其行为？我的猜测是，缓存将在某个上限时被清除 - 也许 50mb 还不够？
需要注意的是，
-release并不等同于free()或destroy()，即使您在之后立即调用它>alloc init您不应该假设该对象已被清除。这就是为什么-retainCount滥用者如此讨厌，他们认为这是调试内存管理的好方法。The images are probably being cached. Take a look at
[img setCacheMode:]Did you actually try doing 500 times or are you guessing at the behaviour? My guess would be that the cache would be cleared at some upper limit - maybe 50mb is not that much?
It is important to note that
-releaseis not equivalent tofree()ordestroy(), even if you call it immediately afteralloc inityou shouldn't make the assumption that the object has been cleared away. This is why there is so much hate for the-retainCountabusers that think it is a good way to debug memory management.