Patrick,
Before my change:
If prg contains Global vars which are manipulated in several
sub-function in the same file, we have to declare ppGlobals in each
functions. Now, it is written as a file wide static, so that we no
longer required to declare it the old way.
Some illustration (compile with -gc3):
---8<---
GLOBAL myGlobal
Proc Main()
my Global := 0
Static Function X()
myGlobal := 1
---8<---
NOW is is written as below:
...
static PHB_ITEM *ppGlobals = pGlobals;
HB_FUNC( MAIN)
{
hb_xvm*Global( ...&ppGlobals );
HB_FUNC_STATIC( X )
{
hb_xvm*Global( ...&ppGlobals );
BEFORE:
HB_FUNC( MAIN )
{
static PHB_ITEM *ppGlobals = pGlobals;
..
hb_xvm*Global( ...&ppGlobals );
HB_FUNC( X )
{
static PHB_ITEM *ppGlobals = pGlobals;
..
hb_xvm*Global( ...&ppGlobals );
MORE BEFORE:
... DID NOT WORK ...
IOW, the changes make the C output more compact.
--
Andi
On Fri, 28 Nov 2008 08:47:54 +0100
"Patrick Mast, xHarbour." <[EMAIL PROTECTED]> wrote:
> Message-ID: <[EMAIL PROTECTED]>
>
> Hey Andi,
>
> > * source/compiler/genc.c
> > * source/compiler/gencc.c
> > ! make global variable as file wide static.
>
> Can you explain this a little more?
> Thanks! ;-)
>
> Patrick
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