Comments on Simon Hart: Memory management on Windows Mobile <= 6.1

@Jorn: Thanks for this code snipet. I know about ...

2010-01-27T15:09:15.406Z

@Jorn:

Thanks for this code snipet. I know about this message, but the article was about getting the developer to understand what WM_HIBERNATE actually means and how to handle it. So a good way to get an understanding to the reader is to show a real example.

Cheers
Simon.

@Jason: Sorry for the major late reply. I don't t...

2010-01-27T15:07:35.502Z

@Jason:

Sorry for the major late reply. I don't think the WM_HIBERNATE message threshold can be changed. It sound slike you have hit the threshold of 32-meg per process. Use the Remote Performance Monitor tool to check what your application is doing.

Simon.

To anyone interested, to force a WM_HINERNATE mess...

2010-01-27T14:34:22.449Z

To anyone interested, to force a WM_HINERNATE message being sent from C# just use this:

[DllImport("coredll.dll")]
private static extern int SendMessage(IntPtr hWnd, uint msg, int wParam, int lParam);

public const uint HWND_BROADCAST = 0xffff;
public const uint WM_HIBERNATE = 0x03FF

SendMessage((IntPtr)HWND_BROADCAST, WM_HIBERNATE, 0, 0);

That's all. No need to allocate memory or anything else...
A better formatted version is online here on my blog:
http://blog.koerner.in/index.php?/archives/6-Sending-the-WM_HIBERNATE-message....html

Hi Simon I have a WM6.1 application .netcf vb whi...

2009-09-25T23:36:16.397Z

Hi Simon

I have a WM6.1 application .netcf vb which needs to incorporate memory management as you have described. Is your example code available in vb? I am based in London and wonder if you could review my entire code (for a fee ofcourse) to improve its performance. The app freezes up after a while presumably due to low memory.

ayo owoade
owoade@btinternet.com

Hi there, I was wondering if you are able to sugg...

2009-05-04T03:00:00.000Z

Hi there,

I was wondering if you are able to suggest how the thresholds can be changed. My 64MB device seems to call WM_HIBERNATE at 10MB free which can be quite painful when listening to music + browsing for instance - WMP will always get killed. Any suggestions would be great.

Cheers,
Jason

Thank you for a very good post.

2008-10-29T07:47:00.000Z

Thank you for a very good post.

What device are you running on? there is as max li...

2008-09-15T12:15:00.000Z

What device are you running on? there is as max limit on pre WM 6.1 of a 32 meg per process.

--
Simon.

Hi,I do have an outofmemoryexception in my app. Si...

2008-09-07T12:26:00.000Z

Hi,
I do have an outofmemoryexception in my app. Since the device has 256MB I have no idea why this happens. During execution there are only about 20MB used. So I wrote a little app pretty much like yours. Eating 1MB each loop I get an exception when i==25- but there ist still over 100MB available. Any idea whats going on here?