RIM Memory
My app crashes every time
I run it in the emulator, but it works fine on the pager.
The Simulator has a bug
handling applications with a declared StackSize greater then about
20000. This bug exists in the 950 SDK, but may have been fixed in other
SDKs. The only work around is to redesign your app to use less stack
space.
I'm out of space on my
pager to load new apps. What can I do?
The biggest improvement will
probably come from reloading your apps using the "grouping"
syntax. If you load 3 apps separately, each app is given a chunk of file
memory in 64k increments in which to reside. If the apps are much
smaller then 64k, this could be a lot of wasted space. By deleting and
reloading the apps as a group, the amount of space being used will
probably be greatly reduced. The syntax is outlined in the programmer
help. Here is an example:
programmer load ( app1.dll
app2.dll app3.dll )
NOTE: the spaces in front of
the parenthesis are important!
The only downside to this
configuration, is that its not possible to modify any of the individual
apps without removing and reloading all of the apps in the group.
How can I make my apps
smaller?
There are several things you can do.
Below is a list of suggestions from RIM. (Thanks to Mike Bailey!)
- Compile your application under Win32
Release mode. Seems simple, but if you aren't doing it, it makes a
huge difference.
- Select the Link Tab - Customize
Category and check the box "Use program
database". By storing the debug information in a separate file,
the application size is reduced.
- Select the Link Tab - Customize
Category and uncheck the box "Link
incrementally". Normally this is checked. Incremental linking
makes your compiles faster, but may introduce wasted space in the
app.
- Select the Link Tab - General Category
and uncheck the box "Generate debug
info". See #1 above.
- Select the Link Tab - General Category
and check the box "Ignore default
libraries".
- Select the C/C++ Tab - Optimization
Category and select "Minimize Size" in
the Optimizations field.
- Select the C/C++ Tab -Select the C/C++
Tab - Project Options field, add
the line "/GF". This will eliminate duplicate string and
store strings in
ROM.
- In Visual C++ 6.0, go to Project -
Settings - Link - General - Project
Options and enter "/align:16". This significantly reduces
the size of the
DLLs.
- In Visual C++ 5.0, you can use the #pragma
data_seg() function to save
your arrays into flash. It specifies the default section for data.
For
example: pragma data_seg( "MY_DATA" ) causes data
allocated following the
#pragma statement to be placed in a section called MY_DATA. Data
allocated
using the data_seg pragma does not retain any information about its
location. Here is some sample code to illustrate this:
#pragma data_seg( ".text" )
static char *CloseCallMenuItems[ ] = {
MENU_SEPARATOR_BAR,
"Send Request",
"Change Option",
MENU_SEPARATOR_BAR,
"Cancel"
};
#pragma data_seg( )
