![]() ![]() Intuitive memory tracker that also makes it easy and quick to set your RAM freeĪll in all, if you're looking for minimalist macOS application designed to help you free up some of your Mac's RAM, as well as keep a close eye on its memory usage, without cluttering your desktop, Memory Clean is probably you're best bet. Keep in mind that your computer might not function properly during the cleaning process. ![]() What’s more, you can enable the “Auto Clean” function which will trigger the cleaning process if the free memory drops below the threshold. In addition, you can access the app’s preferences and change the default text style and size, the threshold level or the refresh interval. The same information is available in the status bar menu if you right click on the Memory Clean icon. Built-in "Auto Clean" feature designed to completely automate the RAM cleaning process If you press it, you will be able to view other details in a separate window: the amount of active, wired, inactive, free and used memory, but also a total.įurthermore, in order to optimize your Mac's memory usage you have to simply click the “Clean Memory” button at the bottom of Memory Clean's main window. Memory Clean is a simple status bar menu application that can asses the current status of your RAM, display a colorful graph taking into account the current memory statistics and then help you free up memory with a simple click of a mouse button.īy default, Memory Clean will show the amount of free memory in the status bar icon. Minimalist and low-key memory monitoring and optimization for both beginner and advanced users If you're going to write a tool to compete with purge (and this'll be hard given it's free), option 2 is probably the best bet.Whenever you finish working with an application that takes a big chunk of your resources it is advisable to purge your Mac’s memory on your own in order to get your system back to normal as soon as possible. Me, I would just use option 1 if possible (I'm inherently lazy :-). ![]() You could phrase it as "I have an interest in using purge for development but I'm unsure exactly what is does" or "I have security issues with running the code, the powers that be won't let me run it unless we know exactly what it does". This doesn't have to be a "send me the code so I can rip it off and make money" question. This is somewhat trickier since it will require knowledge of the assembler language, system calls and many other things.ģ/ Contact the developers to obtain tips on how it was done. You could use system("/path/to/purge -purgargs >/dev/null 2>&1"), for example.Ģ/ Reverse-engineer the code to see how it's actually doing it. This works well as long as there's no visible effect (such as opening a graphical window). When you don't have the source code for the tool you wish to emulate (as is the case here), there are a number of ways to go about it.ġ/ From your C code, simply call the tool with a system() function call. I cannot test all this stuff since I don't have a Mac. Take them from the disassembly listing above. The only thing you would have to change are the parameters to the final _IOConnectMethodStructureIStr call. This does basically what the purge application from the CHUD tools does. To get you started, just take the AppleSamplePCIClient.c example from the IO kit SDK. If you want more information, let me know. Hopefully some of you can make more sense out of those syscalls. Note that var_1C has been zeroed out before. _text:4B0157CD call _IOConnectMethodStructureIStr Here's the disassembly, though: _text:4B0157A7 lea eax, Without knowing some internal details or the signature of this function the parameters don't make sense to me. After the kext has been found, it is opened via _IOServiceOpen.Īt this point we have a connection to the CHUD kext (at least that's my understanding from the disassembly listing).įinally a call to IOConnectMethodStructureIStructureO is made, which I guess carries out the real magic. To do this, it calls _getCHUDUtilsKextService which tries to locate the CHUD kernel extension by enumerating all kexts using the IORegistr圜reateIterator imported from the I/O kit. This function seems to establish a connection to the CHUD kernel extension. The first thing the API does is to call another function, namely _miscUtilsUserClientConnect_internal. The function doesn't seem to be very complex, but since I'm no MacOS programmer, the imports and called sys APIs don't make much sense to me. Memory Clean is available from the App Store or several download sites, and installs easily. I've disassembled the function in question ( _utilPurgeDiskBuffers) from the CHUD framework. Memory Clean is an app for cleaning up your Mac OS X device memory at intervals. ![]()
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