emo/busybox
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

docs: tweak keep_data_small.txt

Browse Source 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2014-01-13 11:45:34 +01:00
parent 0f592d7fb9
commit d74f8435ea
1 changed files with 9 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
docs/keep_data_small.txt
View File

@ -103,7 +103,15 @@ smaller code. In order to assign it, use SET_PTR_TO_GLOBALS macro:
SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); SET_PTR_TO_GLOBALS(xzalloc(sizeof(G)));
Typically it is done in <applet>_main(). Typically it is done in <applet>_main(). Another variation is
to use stack:
int <applet>_main(...)
{
#undef G
struct globals G;
memset(&G, 0, sizeof(G));
SET_PTR_TO_GLOBALS(&G);
Now you can reference "globals" by G.a, G.buf and so on, in any function. Now you can reference "globals" by G.a, G.buf and so on, in any function.