A problem about the using of ListMP module

Thank you fot your reply!

I reference the Page 3-45 of  SYS/BIOS Inter-Processor Communication (IPC) and I/O User’s Guide.pdf, and put the code 

buf = Memory_alloc(SharedRegion_getHeap(0),(seizof(Rec)),128,NULL) my program.

typedef struct Rec {

    ListMP_Elem elem;

    Int data;

} Rec;

int buf[6];

Rec* elem;

Void tsk0_func(UArg arg0, UArg arg1)

{

   Rec rec1;

   gateHandle = GateMP_getDefaultRemote();

ListMP_Params_init(&listParams);

listParams.gate = gateHandle;

listParams.name = "myListMP";

listParams.regionId = 0;

listHandle = ListMP_create(&listParams);

System_printf("ListMP_create sucess\n");

rec1.data = MultiProc_self();

ListMP_putTail(listHandle,&rec1.elem);

buf = Memory_alloc(SharedRegion_getHeap(0),(seizof(Rec)),128,NULL);

    System_exit(0);

}

Void tsk1_func(UArg arg0, UArg arg1)

{

elem = NULL;

while(ListMP_open("myListMP",&listHandle)<0){

     System_printf("ListMP_open failed\n");

    }

    System_printf("ListMP_open sucess\n");

    if(MultiProc_self() != 5){

     buf[MultiProc_self()] = MultiProc_self();

     ListMP_putTail(listHandle,(ListMP_Elem *) &(buf[MultiProc_self()]));

    }else{

     while((elem = ListMP_next(listHandle,(ListMP_Elem *)elem))!= NULL){

     System_printf("ListMP_Elem:%d",elem->data);

     }

    }

}

/*

 *  ======== main ========

 */

Int main(Int argc, Char* argv[])

{

    Ipc_start();

     /* Create a unique 'master' Task if on proc 0 */

    if (MultiProc_self() == 0) {

        Task_create(tsk0_func, NULL, NULL);

    }

    else {

        Task_create(tsk1_func, NULL, NULL);

    }

    BIOS_start();

    return (0);

    }

When i build it ,I got problem as follow:

"../listMP.c", line 107: warning: function declared implicitly

"../listMP.c", line 107: error: type name is not allowed

"../listMP.c", line 107: error: expression must be a modifiable lvalue

2 errors detected in the compilation of "../listMP.c".

i have add the "#include<xdc/runtime/memory.h>" and "#include <ti/ipc/SharedRegion.h>"at the begining of program.

and i just want to realize the second case of the using of IPC introduced in the SYS/BIOS Inter-Processor Communication (IPC) and I/O User’s Guide.pdf(Page 1-6).

Best regards,

Jianlei

Sorry, but its not very helpful when I don't know what line is 107 referencing.

I've attached a simple ListMP example that might help you out.

8372.testsListMP.zip

Judah

judah,

In your sample code in your Tester struct (that's being passed back and forth), you added a 30 word dummy buffer "to make flag on 2nd cache line."  Could you explain why that was necessary and what changes in the code would be required if that weren't there?

Alex,

Its not necessary.  This is a test program.  I was making sure that things still worked if my message is larger than a single cache line.

Judah

Ah, okay.

judah,

I am sorry i forgot ro mark the error line. And thank you for your example,By your code,i found the error of my code because i didn't define the type of the buf correctly.

But now i got problem of id cannot be larger than numEntries ,too. I didn't set the value of the id and the numEntries in my code.

By Single-step debugging, i found when the code run to the ListMP_putTail(listHandle,&rec1.elem); the error occured.

In order to debug easily,i changed the Void tsk1_func(UArg arg0, UArg arg1) as followes

Void tsk1_func(UArg arg0, UArg arg1)

Hi Juda,

I found the listMP very code very usefull but could not run it  on the C6678.  Can you please help with this. I have the followimg errors:

<Linking>

"./configPkg/linker.cmd", line 122: warning #10096-D: specified address lies outside memory map

error #10264: DEFAULT memory range overlaps existing memory range L2SRAM

error #10264: DEFAULT memory range overlaps existing memory range MSMCSRAM

error #10264: DEFAULT memory range overlaps existing memory range DDR2

error #10010: errors encountered during linking; "listMP.out" not built

Regards

Naim

Naim,

The issue you list above have nothing to do with the actual code.  Its your platform or linker command file that is problematic.

I'm not sure what you are trying to do but the best thing would be to clean your project, choose the evm6678 platform from the RTSC tab and rebuid the project.

Judah