[Need Help] From ObjC++ to ObjC & C++
-
Bonjour,
=46ew months ago, I wrote a mutlithreaded app under MacOS X Server.
This is a ObjC++ application.
My problem is :
*
Since Apple doesn't support ObjC++ code with MacOS X I don't know how
to rewrite my application keeping the C++ source code and ObjC source code.
*
The facts are :
I can't rewrite the "engine" of this software in other langage. It's in C++.
I really need to use ObjC because I want to use DO architecture (com.
between processes)
The only things I know are :
C++ can call C
C++ can do "C linkage"
ObjC can call C
These "rules" should be the key to rewrite simply my application,
but I have no idea to realise it.
I hope you could help me to reorganize my source code (see samples).
Here is my sample code in ObjC++
extern "Objective-C"
{
#import <Foundation/Foundation.h>
#import "threaded_app.h"
}
void main( int argc, char *argv[] )
{
NSAutoreleasePool *thePool =3D [[NSAutoreleasePool alloc] init];
ThreadedApp *AppInThread;
NSConnection *defaultConn =3D [NSConnection defaultConnection];
AppInThread =3D [[ThreadedApp alloc] init];
[defaultConn setRootObject:AppInThread];
if ([defaultConn registerName:@"ThreadedApp"] =3D=3D NO)
{
NSLog(@"Unable to launch as a server -> e-mail to
<kubernan...>");
exit(EXIT_FAILURE);
}
[defaultConn runInNewThread];
NSLog(@"Succesfully launched");
[[NSRunLoop currentRunLoop] run];
[thePool release];
}
And now theaded_app.M
Note this is a server application (running in background); this
server receives data from
clients application (c.f. NSMutableDictionary), treats these data
and sometimes sends a result.
The communications between server and clients is based on D.O.
(so in ObjC), but all the data process is write in C++.
extern "Objective-C"
{
#import <Foundation/Foundation.h>
#import "threaded_app.h"
}
// some #include
// some #define
@implementation ThreadedApp
- (NSMutableDictionary *)app_process:(id) sender
{
NSMutableDictionary *retour_error =3D [[NSMutableDictionary alloc] init];
NSLog(@"Request is in loop");
// We beggan to read the "objects" sends by client
NSString *signature =3D [sender objectForKey:@"signature_app"];
int ln;
lnr =3D [signature length];
if (ln =3D=3D 0)
{
// If error, I send the error to the client !!!!!
NSString *error_string =3D @"=3D=3D=3D signature_app missing =
=3D=3D=3D";
[retour_error setObject:error_string forKey:@"error"];
return [[retour_error copy] autorelease];
}
/*------- INITIALISATION -------------------------*/
NSNumber *type_of_demand;
type_of_demande =3D [sender objectForKey:@"execution_mode"];
bool learning_mode;
learning_mode =3D [type_of_demande boolValue];
if (learning_mode)
/*---------------- LEARNING MODE -----------------*/
{
NSLog(@"LEARNING PHASE LAUNCHED");
// some declarations
double *array_of_input_values;
double *array_of_output_values;
// ObjC
NSNumber *value1;
value1 =3D [sender objectForKey:@"value1"];
value =3D [value1 doubleValue];
// C++
cout << "value1 : " << value << endl;
// ...
// <SNIP>
// ...
array_of_input_values =3D new double[value_x];
// value_x is a value sends by client (a NSNumber)
array_of_output_values =3D new double[value_y];
while (save_index < total_number_of_something)
{
// ...
// some declarations
// ...
for (index_array =3D 0; index_array < input_values;
index_array++)
{
NSNumber *input_double;
input_double =3D [input_value objectAtIndex:save_index];
double value_to_read;
valeur_to_read =3D [input_double doubleValue];
array_of_input_values[index_array] =3D valeur_to_read;
save_index =3D save_index + 1;
}
// Create instance of a C++ object
data[pattern_count]=3Dnew
Pattern(input_values,foo1,foo2,array_of_input_values);
}
// Create the C++ Special Object
Special_Object SOnet(value1);
}
As you can see, today this code mixes C++ and ObjC.
Thanks for your help !
--
------------------------------------------
10191 Technologies (We build infernal machines, AI tools and more)
www coming soon.
Emails : <kubernan...> (webmaster)
<yellowbaby...> (our Web Diva)
<chris...> (our "unit=E9 d'ombre") -
> Since Apple doesn't support ObjC++ code with MacOS X I don't know how
> to rewrite my application keeping the C++ source code and ObjC source code.
Be sure to read the list archives before asking your questions; it was
announced here just yesterday that Apple's posted some new tutorial info on
this very subject. See:
http://developer.apple.com/samplecode/Sample_Code/Platforms_and_Tools/Proje
ct_Builder/Cocoa_With_Carbon_or_C__.htm
--
Rick Roe
Webmeister & Icon Dude
http://www.icons.cx/ -
>> Since Apple doesn't support ObjC++ code with MacOS X I don't know howde.
>> to rewrite my application keeping the C++ source code and ObjC source co=
>Ok... Thx a lot..I didn't see this news.
> Be sure to read the list archives before asking your questions; it was
> announced here just yesterday that Apple's posted some new tutorial info on
> this very subject. See:
>
> http://developer.apple.com/samplecode/Sample_Code/Platforms_and_Tools/Proj
e
> ct_Builder/Cocoa_With_Carbon_or_C__.htm
>
I saw the sample source, it seems simple. But, despite of the fact i'm a new=
bie
in ObjC++, I could create my first application in ObC++ on MacOS X server.
Now, in MacOS X, when i think my code using the Wrapper for C++ i can see
small problems such as :
int num_x;
NSArray *number_in_x =3D [sender objectForKey:@"number_in_x"];
num_x =3D [number_in_x count];
// PB HERE ("new", a c++ method)
x_count=3Dnew int[num_x]; //********** C++ *********
int value;
for (int i =3D 0; i < num_x; i++)
{
NSNumber *number_of_x_by_y;
number_of_x_by_y =3D [number_in_x objectAtIndex:i];
value =3D [nombre_neurones_par_couche intValue];
x_count[i] =3D value;
}
Of course i can use a wrapper for calling my C++ methods, but,
what can i do for some functions such as "new" is this sample (or cout ?).
Thx a lot again for your help.
--
------------------------------------------
10191 Technologies (We build infernal machines, AI tools and more)
www coming soon.
Emails : <kubernan...> (webmaster)
<yellowbaby...> (our Web Diva)
<chris...> (our "unit=E9 d'ombre")
