MemMaker for the .NET Compact Framework

re: MemMaker for the .NET Compact Framework

achellies — Thu, 12 May 2011 01:47:21 GMT

Do this tech available for the native exes and dlls, i want to use the webkit under windows CE 5.0, but th webkit's image is so large, so i want to use the technology mentioned in this article, do it available for the native exes and dlls?

re: MemMaker for the .NET Compact Framework

Sesham — Fri, 25 Jun 2010 14:51:15 GMT

Hi,

this is really a cool article, thanks for posting.

I tried to use this technique on a sample application , I moved all the code to a managed dll.(code in the dll keeps creating bitmaps dynamically in a thread)

dll code

private void eatMem_Click(object sender, EventArgs e)

{

//if (screenBuffer != null)

//{

// screenBuffer.Dispose();

screenBuffer = null;

//}

screenBuffer = new Bitmap(1600, 480);

}

private void threadStart_Click(object sender, EventArgs e)

{

ThreadStart ts = new ThreadStart(test);

Thread t = new Thread(ts);

t.Start();

ThreadStart tsalloc = new ThreadStart(alloc);

Thread talloc = new Thread(tsalloc);

talloc.Start();

}

void test()

{

for (int i = 0; i < 1000000000; i++)

{

this.Invoke(new SetText(settext));

System.Threading.Thread.Sleep(1000);

}

void alloc()

{

for (int i = 0; i < 1000000000; i++)

{

this.Invoke(new EventHandler(eatMem_Click));

System.Threading.Thread.Sleep(1000);

}

static int ctr = 1;

void settext()

{

label1.Text = ctr.ToString();

ctr++;

}

exe code

using memmoryTestDll;

namespace memmoryTest

{

static class Program

{

/// <summary>

/// The main entry point for the application.

/// </summary>

[MTAThread]

static void Main()

{

memmoryTestDll.OptimizedDLL.StartUp.Main();

}

I did not see any difference , am i missing something?

the application runs of memory after allocating around 38 bitmaps

re: MemMaker for the .NET Compact Framework

Walter — Fri, 15 Jan 2010 01:10:07 GMT

Sounds neat, but didn't seem to do anything for me either. Maybe there are some other things going on here that we cannot see.

re: MemMaker for the .NET Compact Framework

Sean Solt — Tue, 17 Nov 2009 12:35:04 GMT

Hi Rob!

I need a little support. I have a really huge .NET cf application. I fight with the memory limit for a while. I tried your method and used the memory mapper program to watch the changes but there were nothing changed. I put my program completly to a DLL as you advised and call it from an "empty" exe but the memory map remained the same as before the change. What can be the problem? (using WM5).

Thank: Sean

re: MemMaker for the .NET Compact Framework

Faiyaz — Wed, 22 Jul 2009 08:20:39 GMT

Great finding sir. Thanks for sharing the info. Hope some of my issues will now be resolved.

re: MemMaker for the .NET Compact Framework

robtiffany — Fri, 17 Jul 2009 04:01:17 GMT

I'm just glad to see folks from our mobile community are observant and curious and therefore point out bugs in our system. It's also nice to see people put forth workarounds to help everyone else. Raffaele Limosani in Italy was on to this issue over a year ago when he made it public on his blog. He knew that managed exe's whould take up slot space equal to their file size and that managed dll's wouldn't, which leads to the workaround of putting all your code in dll's. The only reason we're even talking about this issue is because Windows Mobile 6.x still uses our older version of Windows CE 5.0 and not our current version where this has been fixed. Thanks to Brian, Raffaele and all those inside Microsoft who have made subtle memory issues clearer to our developers.

re: MemMaker for the .NET Compact Framework

simon.tamman — Wed, 15 Jul 2009 20:53:19 GMT

Brilliant, and it just so happens that due to my rather pedantic architecture hat I have already done this (without even realising the virtual memory saving feature it provides). Our .exe just creates an instance of "App" and runs. :)

Nice to know this though. It may help some other projects here!

Reggies

Jax

More Memory for ALL in WM 6.x

The Windows Mobile RSS (Reed and Steve Stuff) Feed — Thu, 11 Jun 2009 00:13:16 GMT

Now that the Windows Mobile 6.5 DTK is available, you are probably starting to discover some of the new

MemMaker для .NET Compact Framework

Русский блог Windows Mobile — Mon, 01 Jun 2009 09:14:43 GMT

MemMaker для .NET Compact Framework Оригинал: http://blogs.msdn.com/robtiffany/archive/2009/04/09/memmaker-for-the-net-compact-framework.aspx

re: MemMaker for the .NET Compact Framework

Andrew Konovalov — Sat, 30 May 2009 18:53:50 GMT

Short amendment regarding not using "other 32Mb". It really meant to be the particular memory range 0x2000000-0x4000000 (the XIP location).